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Blog

The Benefits of a Medical Advisor

1/10/2023

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Introduction
​A medical advisor who is an active member of your organization's risk management team can help prevent and reduce the severity of program-related injuries and illnesses. We recommend working with a medical advisor who is familiar with your program and an experienced outdoor person. A medical advisor can:
  • Help program managers identify predisposing terrain, environmental, and clinical conditions that may contribute to program-related accidents, injuries, and illnesses and suggest strategies to prevent them.
  • Write standing orders authorizing your staff to administer medications or follow treatment protocols in the event of an injury or illness. 
  • Assist in reviewing your trip participants' health information.
  • Provide advice during an incident.
  • Annually, review the program's accidents and incidents.
  • Help train staff.

Standing Orders & Protocols
Medical advisors use standing orders to authorize treatment and evacuation guidelines to meet an individual program's needs.
For the purposes of this document, standing orders are written treatment and evacuation protocols—often in the form of algorithms—that authorize a wilderness medicine provider to complete specific clinical tasks usually reserved by law for licensed physicians (MD, DO, NP), physician assistants (PA), or nurse practitioners (NP) while in the backcountry. Standing orders may be specific to a patient or a condition and take two forms:
  • Online protocols require verbal permission from a medical advisor to implement.
  • Offline protocols do not require verbal permission from a medical advisor to implement and rely on the judgment of the field provider.
Many states or governing bodies have laws and rules regarding the use of "standing orders" or "protocols" for non-prescribers. Local laws may prohibit unlicensed persons from using techniques and treatments listed in the Wilderness Medicine Education Collaborative (WMEC) scope of practice documents and taught in WFA, WAFA, WFR, or WEMS courses.
Best Practices
Standing orders and protocols should:
  • Be written in clear, easily understood language.
  • Be accessible to all who need to follow them.
  • Be carefully chosen so they have little potential to cause patient harm.
  • Be based on evidence-based guidelines and recommendations.
  • Clearly define who is authorized to use the protocol. Standing orders imply training and certification. [Does the protocol apply to all currently certified staff—WFA, WAFA, WFR, WEMS—or only to graduates holding a WFR or WEMS certification?]
  • Clearly define when—under what conditions—staff may use the protocol.
  • Clearly define if the protocol is offline or online. In other words, may staff exercise their judgment, or must they obtain verbal permission from the medical advisor—or their appointee—before proceeding?
  • Be periodically reviewed and revised; annual reviews are common.
  • Be signed and dated by the medical advisor authorizing the order(s) and include their license number.
We recommend medical advisors review the WMS practice guidelines, the WMEC scope of practice documents, and all applicable laws before writing standing orders for an organization. It is critical that organizations train their staff to follow their standing orders and protocols.
Examples
Examples of standing orders written for an outdoor program or guide service by their medical advisor include:
  • Authorizing staff to administer prescription or over-the-counter medications to clients.
  • How to clean and debride wounds.
  • How to treat impaled objects.
  • When to start and stop cardiopulmonary resuscitation (CPR) in both normothermic and hypothermic patients.
  • How to rule out a potential spine injury in a person involved in a traumatic incident.
  • How to reduce a specific joint dislocation.
  • How to treat persons who test positive for COVID in the field.
Examples of standing orders written for an individual by their personal physician or an organization's medical advisor include:
  • Developing a sick day plan for an individual with Type 1 diabetes.
  • The administration of prescribed medication for an underage individual.
  • The on-going field treatment of an individual with a chronic condition.
Interested in learnig more about wilderness medicine? Take one of our wilderness medicine courses. Guides and expedition leaders should consider taking our Wilderness First Responder course.

Looking for a reliable field reference? Consider consider purchasing one of our print or digital handbooks; our digital handbook apps are available in English, Spanish, and Japanese. Updates are free for life. A digital SOAP note app is also available.
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Minimizing Injury & Illness during Outdoor Trips

12/23/2022

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All outdoor trips incur risk. Trip planners must balance the severity of a potential injury or illness with the expedition members' outdoor skills, equipment choices, and the availability of outside assistance. The planner must accurately assess each member's skills and other factors with:
  • the risks inherent in the activity: rock climbing, mountaineering, trekking, whitewater, skiing, caving, ocean touring, etc.
  • the potential for and the severity of a hazardous weather event: flash floods, lightning, wind events, storm surges, mudslides, high water and flooding events, and wildfires
  • infectious disease outbreaks
  • evacuation-associated injuries should an injury or illness occur.
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Program managers and trip planners often require a deeper understanding of preventative wilderness medicine strategies than most WFR or WEMT graduates possess. A medical advisor who is intimately familiar with the program or trip can recognize clinical conditions for specific medical problems and aid in developing effective mitigation strategies.
Let's take a closer look at each risk category:

​Hazardous Weather Events
Due to global warming, hazardous weather events are increasing worldwide, making a trip-related prediction of potential weather-related injuries challenging. In addition to injuries directly associated with weather events, changing microclimates are expanding disease and fauna boundaries, often increasing the range of infectious diseases and venomous creatures.
Managers and trip leaders need to:
  • focus on identifying emerging weather patterns within their expedition areas and modify their routes and activities accordingly
  • ensure reliable two-way field communication and increase weather check-ins
  • review, field test, and update their emergency action plans
  • ensure pre-season or pre-trip training that focuses on early field recognition of potentially hazardous weather events and their subsequent avoidance and mitigation strategies
  • work with a medical advisor to ensure effective pre-trip screening to identify pre-disposing risk factors for environmental injuries and illnesses and develop management guidelines to mitigate them

Inherent Activity- and Terrain-associated Risks
Most activity- and terrain-associated hazards are well known within the outdoor industry. Nationally and internationally recognized professional organizations offer training and certification in numerous outdoor pursuits designed to promote best practices within the industry. Both professionals and non-professionals can benefit from these courses and certifications. Training in activity-specific rescue techniques and wilderness medicine, especially Wilderness First Responder, helps expedition members understand potential consequences should things go wrong and imbibe a conservative approach to risk and site management.

Infectious Disease Outbreaks​
Each pathogen, animal vector, and host has an optimal climate in which they thrive, with warm, moist temperate, subtropical, and tropical environments being the best. Global warming has increased and will continue to increase, both temperature and precipitation worldwide, leading to the proliferation of many infectious diseases. While this trend is predictable, the exact type and location of an emerging disease are not, and exposure to and contracting an infectious disease in an area without historical data is increasingly common. To this end, expedition members should protect themselves by treating their water, ensuring good personal and expedition hygiene, taking aggressive precautions against insect-borne diseases, and avoiding potentially infectious animals and their habitat. Avoidance equals prevention, and there are no reliable field treatments for most infectious diseases.
Do your research:
  • Information about prevention, vaccines, drug prophylaxis, and treatment is available from the Department of State, the Centers for Disease Control (CDC), the World Health Organization (WHO), and the International Association of Medical Assistance to Travelers (IAMAT). NOTE: the above sources may not have current information on remote regions; confirm or update your findings with local medical professionals immediately upon arrival. 
  • Common insect carriers are fleas, mosquitoes, sand flies, lice, chiggers, ticks, & assassin bugs, and proteins in an insect's saliva may cause allergic reactions. Use protective netting, clothing, and insect repellent. The most effective repellents are those with 20% DEET, picaridin, or IR3535; use them on exposed skin. Treat clothing & equipment with products that contain 0.5 percent permethrin, an insecticide.

​Evacuation-associated Injuries
​The ability—or lack thereof—to rapidly evacuate an injured or ill expedition member to definitive care may directly affect their outcome. Since the inherent risk of injury to rescue party members tends to increase with the severity of the patient's injury or illness, it is critical to diagnose the patient's current and anticipated problems accurately. In some cases, an accurate assessment may require more medical experience than expedition members possess, and a physician consult may be necessary. Any evacuation, regardless of the type or urgency, should not endanger members of the evacuation team or the patient beyond the team's capacity to manage the risk effectively.
Interested in Wilderness Medicine? Take one of our wilderness medicine courses. Guides and expedition leaders should consider taking our Wilderness First Responder course.

Looking for a reliable field reference? Consider consider purchasing one of our print or digital handbooks; our digital handbook apps are available in English, Spanish, and Japanese. Updates are free for life. A digital SOAP note app is also available.
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Pre-trip Medical Forms: Types, Formats, and Pros & Cons

11/5/2019

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Introduction
Trip medical forms can reduce program liability and help administrators and field staff prevent injuries and illnesses. In most cases, prevention is accomplished through appropriate screening of participants and modifying the structure of a trip by adjusting the trip’s activities and routes to accommodate individual medical conditions or concerns. The type and format of a trip medical form affects the quality of information received and the ability of program administrators and field staff to prevent and treat injuries and illness in the field.

Why require medical forms for trips?
  • Accident/illness prevention via screening
  • Accident/illness prevention via course design/structure by program administration (preferred and requires time to prepare/adjust)
  • Accident/illness prevention via individual & group management by field staff (may be necessary if discovered during the trip). If a physical disability or an ongoing medical problem are discovered during the trip, it may be necessary to assess both the group's and the individual's abilities in light of the newly discovered disability or problem as well as the proposed activity progression and environment before continuing with the trip as planned.​

How is client medical information collected?
Medical information may be collected orally from the client or via a written medical form. Collection is more effective if all involved—client, guide/instructor, healthcare provider, etc.—know why the information is important and how it will be used.
There are two basic types of written medical forms: Those completed by a health care professional (physician, PA, or nurse), and those completed by the client (self-reporting).
Medical forms completed by a health care professional—especially if they are the client's personal physician—tend to be the most accurate. Those completed by professionals with little or no previous knowledge of the client—college or university clinics, for example—can miss some conditions if the providers rely heavily on patient self-reporting.
Self-reporting may be oral or written. Oral self-reporting typically takes place the day of the trip, often as clients are ready to embark on the trip. The accuracy of oral self-reporting is questionable as it's easy for clients to forget something important or simply not mention it for fear they will not be permitted to go on the trip. Clearly written self-reporting forms are better than oral self-reports.
Written forms—regardless of whether completed by a healthcare professional or by the client—tend to be more effective when a combination of check boxes and open-ended questions are used. For example, here's a question with Yes/No checkbox followed by a series of open-ended questions asking for more information:

"Are you taking any prescription medications?" (Yes/No)

"If you answered "yes" to the above question please:
  • List the medication, dose, the reason for taking it.
  • Are you current with each medication?
  • If you plan to carry this medication with you on the trip, are there any storage requirements we need to be aware of?

If client medical information is so important, why don't all outdoor programs collect it?
  • Personal health information is protected by the Health Insurance Portability and Accountability Act of 1996 (HIPAA). While there are hundreds of ways that HIPAA rules can be violated, the most common with respect to outdoor programs is an organization's failure to control access to a client's personal health information (PHI) this includes the online transmission of PHI data. While a HIPAA violation is easy to avoid by simply not requesting clients to complete a written medical form, the lack of personal health information may have significant consequences in a remote setting if clients or guides are not prepared to address an emerging medical problem. The Family Educational Rights and Privacy Act of 1974 (FERPA) prohibits student trip leaders—but not professional trip leaders—from receiving medical information of other students. In some cases, a FERPA violation can be avoided if the student contractually waives their FERPA rights for the purpose of attending a student-led outdoor trip.
  • Forms completed by a healthcare provider may cost the client additional money. As such, they are typically reserved for longer, more remote trips where the medical form is part of an overall admissions process. Once received, each form is reviewed by a trained person who may contact the individual or their provider for additional information. Outward Bound and NOLS are two organizations that require prospective students to meet with their personal physician and have them complete the organization's medical form as part of their admissions process. Some colleges and universities require trip participants to go to the college or university health system to have a medical form completed.
  • Simple checklist forms with a few open-ended questions are easy to complete and, as such, are often used by outfitters on day or weekend trips that will have access to 911 systems. Clients are typically asked to complete them the day of the trip or bring the completed form with them.
  • More detailed forms tend to yield more usable information. Usable meaning being able to guide a potential client to the trip that best suits them or adapting an existing trip to meet their medical and/or physical needs. The earlier a medical form is received by an outfitter, the more time they have to respond.
As mentioned earlier, it is extremely important for outdoor programs and outfitters to accurately describe the trip and its associated hazards and to share how a client's Personal Health Information (PHI) will be used. Consider integrating PHI information into the program's release form to obtain permission to treat the client should it become necessary during the trip, permission to allow the program/outfitter to share and transmit PHI information with guides etc. for the protection and safety of the client during the trip, as well as release the organization from any known and unknown hazards.
Looking for a reliable field reference? Consider consider purchasing one of our print or digital handbooks; our digital handbook apps are available in English, Spanish, and Japanese. Updates are free for life. A digital SOAP note app is also available.
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Community Emergency Response Teams

9/3/2019

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(What are they and should I join one?)
With the worldwide increase in natural disasters, wilderness medicine graduates are uniquely poised to help their neighbors in the event of a local disaster. Communities in all 50 states have organized Community Emergency Response Teams (CERT). CERT members are volunteers, and teams are structured so that local managers have the flexibility to adapt the program and their training to the specific needs of their community. The concept originated with the Los Angeles City Fire Department in 1985 and went national through the Federal Emergency Management Agency (FEMA) in 1993. Contact your local fire, police, or sheriff department for more information or visit the CERT website.

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Death in the Field

7/2/2019

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(What to do when someone dies in the backcountry.)
Deaths in the backcountry are rare, exactly how rare is up for debate. Much depends on how you define backcountry and where you get your numbers (outside of the National Park Service, accurate statistics are hard to find). That said, a few hundred people appear to die each year while recreating in the outdoors. Given the number of people who play outside annually, statistically, death is pretty rare. While the order often changes annually, the top ten causes of death in the backcountry appear to be:
  1. Falls
  2. Drowning
  3. Avalanche
  4. Heart Attack
  5. Hypothermia
  6. Heat Illnesses: heat stroke, exertional rhabdomyolysis, exertional hyponatremia (low sodium)
  7. Lightning
  8. Infectious disease (typically transmitted by biting insects)
  9. Anaphylaxis
  10. Wild animal attacks

So what should I do if I'm with a person who is dying?

There is no single answer that applies to all people other than support their process to the best of your ability. For many, this means holding their hand and simply being present. For some, it may include praying with or for them. If the person is awake, it may mean taking notes to share with relatives and friends. The specifics vary from individual to individual.

How do I know when a person is dead?

They will not have any signs of life: no pulse at their carotid artery, no chest rise, and no air coming from their mouth or nose. Over time their body will cool until it reaches the ambient air temperature and rigor mortis and liver mortis will set in.
Rigor Mortis: When energy is no longer being produced, muscles contract and stiffen beginning with the small muscles of the face, neck, arms, and shoulders and gradually encompassing larger muscles until the person's body is completely stiff. Rigor is typically fully set within eight hours and remains in place for roughly eighteen hours before reversing itself to pre-rigor status, starting with the large muscles.
Liver Mortis: When a person's blood stops circulating after death, gravity causes the red blood cells to settle leaving dark "bruising" in areas of the patient's body that are in contact with the ground. The process begins roughly thirty minutes after death and is fixed after approximately six hours.

What should I do after a person is dead?

Keep in mind that your first priority is yourself and the living members of your party. Make sure everyone is safe. Then, if possible, note the GPS coordinates of the body's location and notify the local authorities via radio, cell phone, satellite phone, or other communication device and follow their instructions. If the dead person was your patient, complete a SOAP note. If they were a client or student, also complete your program's accident/incident report form. Take pictures of the site and body, especially if the mechanism was trauma, and do your best to preserve the scene for the authorities; most states prohibit moving a dead body from the scene of the accident without the authority of the coroner. Of course, some scenes cannot be preserved due to weather or terrain. If you can't contact and receive direction from local authorities and find you must leave the scene, your photos become evidence and part of any subsequent investigation. If you decide to leave the scene and the body, do your best to protect the body from scavengers and clearly mark its location both visually and on a map. Although rare, some expeditions have decided to transport the body of the deceased out of the backcountry. Treat the body with respect and be sensitive to the cultural mores of the deceased and those around you.

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Working with People Under Stress

6/5/2018

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On a functional level, the nervous system is divided into two divisions: the voluntary (somatic) nervous system and the involuntary (autonomic) nervous system. The voluntary division of the nervous system contains both sensory and motor nerves. Sensory nerves carry input to the spinal cord and brain, while motor nerves carry messages from them. Through its nerves, the somatic nervous system controls conscious functions, principally high-level thought and striated muscle contractions. The autonomic division  maintains or restores homeostasis by regulating smooth muscle contractions and the glandular secretion of hormones. Most autonomic functions are beyond conscious control.
The autonomic division of the nervous system is subdivided into the sympathetic and the parasympathetic systems. The sympathetic system stimulates effectors (cells or organs) while the parasympathetic system inhibits them. Both systems continually transmit impulses to the same effector and act in an antagonistic manner, with the stronger impulse assuming control. Under normal conditions, the sympathetic system is responsible for waking us up and the parasympathetic system is responsible for sleep and digestion.

If the sympathetic nervous system is engaged during a stress response, the body prepares for “fight or flight”: pupils dilate to increase vision; pulse, respiration and blood pressure rates rise to meet an intense physical demand; awareness, often seen as anxiety, increases; sweating increases, while vasoconstriction leaves the skin pale, cool and moist; and endorphins are released to block pain. Over stimulation of muscle fibers often results in uncontrollable shaking. A strong sympathetic response decreases cognitive function leaving patients unable to process complex information and feeling overwhelmed and often fearful. A patient experiencing a sympathetic ASR cannot give accurate information about their injuries. In most cases, they are unaware of any physical injuries and may not exhibit abnormal signs or symptoms upon examination. Their vital sign pattern may mimic or mask volume shock.

If the parasympathetic nervous system is stimulated, the patient becomes nauseated, dizzy, and may faint. Blood pools centrally around their digestive tract and their pulse, respiratory and blood pressure rates fall. Their skin is pale and cool. Upon awakening, the patient is often confused. A parasympathetic ASR may mimic the signs and symptoms of a concussion and make accurate assessment of a traumatic head injury difficult.

A serious medical incident is often stressful to all involved: rescuers, care providers, patients, and bystanders; and, any or all involved may have both immediate and lingering effects: Post Traumatic Stress Disorders (PTSD) are common, although individual reactions vary considerably. Your actions as a rescuer or care provider can mitigate your patient's stress in both the short term and long term. And as a scene leader, the same strategies apply to working with expedition members or your rescue team and bystanders. The term "Psychological First Aid (PFA)" has been used in recent years to identify strategies that have proven to help prevent or reduce both the short (ASR) and long term (PTSD) effects of stress. While the term may be new, the strategies discussed below should not be: Psychological First Aid is—and has been—an intentional and integral part of our Patient Assessment System. The strategies below align with current PFA principles.
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As much as possible, rescuers should strive to create as safe an environment as possible in the aftermath of an overwhelming event by mitigating scene threats and calming patients, bystanders, and rescuers as necessary. It's vital not to lie to patients, bystanders, or team members but to be realistic and focus on what you—and they—can do, and are doing to keep them safe. This may include removing select people from the scene or shielding them from a chaotic scene.

Remember that stress affects everyone, including rescuers and care providers. You must first reduce your sympathetic ASR (fight or flight response) before attempting to help others. Again, be truthful and focus on the present. As much as possible, radiate calm. Following the Patient Assessment System and using SOAP notes help caregivers reduce their ASR by providing an organized, step by step thought process, that also acts to calm their patients.

It's easy for both patients and rescuers to feel powerless or helpless in what they perceive as extreme situations where no clear avenue forward is visible. Care providers can empower patients by involving them in their care and evacuation decisions where appropriate, and where appropriate in the care of others. And team leaders can empower rescuers, care providers, and bystanders by assigning clear—step by step—practical, and doable tasks.

Team leaders can also build an on-scene support network by assigning a care provider to each patient and have them remain with the patient throughout their assessment, treatment, and evacuation (they do not have to be the primary care provider). The relationship between a care provider and patient provides a very real lifeline for severely stressed patients. Both team leaders and care providers can also work to extend the support lifeline beyond the scene by helping patients and bystanders connect with their friends, family, and pets as soon as possible.

ln combination with shared, relevant stories, all of the above combine to help inspire hope for the current situation.
Looking for a reliable field reference? Consider consider purchasing one of our print or digital handbooks; our digital handbook apps are available in English, Spanish, and Japanese. Updates are free for life. A digital SOAP note app is also available.
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Should You Always Fill Out a SOAP Note?

5/29/2018

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In combination with our patient assessment system and field handbook, we use SOAP notes to help teach students how to assess and treat patients. They quickly see the benefit in a well-designed SOAP note, especially for complex problems; however, they often question if a SOAP note should be used for every patient? After all they take time to complete (and everyone hates paperwork, particularly if it's seen as unnecessary). So...what's necessary and what isn't?

Sometimes the answer is obvious: The problem is serious and/or complex and a SOAP note is necessary. But what about minor problems, for example: blisters, strains and sprains, cuts, etc.; and problems that may, or may not, develop into something more serious, like hymenoptera stings that may progress to anaphylaxis, a blow to the head that may turn out to be a mild concussion, or a drowning patient who was awake throughout their rescue but coughing, etc. These are not so obvious, usually because they don't require an evacuation at the moment...but could in the future. What about them?

There are a couple of ways to proceed; both are valid:
  1. Complete a SOAP note and incident report. After all, it only takes a few minutes. While a SOAP note may ultimately turn out to be unnecessary, you've covered your bases. And, it's programmatically important to keep track of even minor incidents in case they might point to field or administrative errors that need addressing.
  2. Write down basic information in your notebook (patient's name, presenting S/Sx, problem, and treat/monitor the patient. If developing S/Sx warrant closer attention, transfer the information to a SOAP note and continue from there. Remember to complete an incident form.
Looking for a reliable field reference? Consider consider purchasing one of our print or digital handbooks; our digital handbook apps are available in English, Spanish, and Japanese. Updates are free for life. A digital SOAP note app is also available.

Download a free pdf copy of our 2018 SOAP note for you personal or institutional use; print on 8.5 x 14 legal paper and fold into thirds. Many not be used to teach © 2018 WMTC.

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Global Warming & the Spread of Infectious Diseases

5/22/2018

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Human health is linked to the health of the environment, including its plants and animals (yes, insects are classified as animals: Kingdom Animalia > phylum Arthropoda). Infectious diseases in humans are caused by viruses, bacteria, parasites, or fungi, and transmission is via one of four routes:
  1. Direct human to human transmission is often via contaminated body fluids: fecal matter, saliva, respiratory droplets, vaginal fluids, sperm, and blood (HIV/AIDS, tuberculosis, measles, STDs).
  2. Direct animal to human transmission is typically via insects and mammals (rabies). Indirect, vector-borne transmission between humans and humans is usually insect- (malaria, dengue fever, yellow fever) and water-borne (cholera, Giardia).
  3. Indirect water-borne infections are usually transmitted between humans via ingested contaminated drinking water or food, or through immersion (Leptospirosis, Schistosomiasis).
  4. Indirect, vector-borne transmission between humans and mammals is usually via insects (bubonic plague, Lyme disease) or the urine and feces of infected rodents (Hantavirus).
Each pathogen, animal vector, and host has an optimal climate in which they thrive with warm, moist temperate, subtropical, and tropical environments being the best. Global warming has increased, and will continue to increase, both temperature and precipitation worldwide leading to a proliferation of many infectious diseases. While this trend—the increase in infectious diseases—is predictable, the exact type and location of an emerging disease is not. It’s likely you will be exposed to an infectious disease where there is no historical data. To this end, you should take care to protect yourself by ensuring good personal and expedition hygiene, taking precautions against insect-borne diseases (see this blog article for details), and avoiding potentially infectious animals and their habitat. Keep in mind that although the Centers for Disease Control (CDC) and the World Health Organization (WHO) are monitoring the situation worldwide, (and it is worthwhile to visit their sites to see if the area you live, or intend to visit, is endemic to a specific disease) specific outbreaks are impossible to predict. Be cautious and take precautions.
Looking for a reliable field reference? Consider consider purchasing one of our print or digital handbooks; our digital handbook apps are available in English, Spanish, and Japanese. Updates are free for life. A digital SOAP note app is also available.
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Guide to Insect Repellents, Insecticides, and the Prevention of Insect-borne Diseases

11/15/2017

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Fleas, mosquitoes, lice, assassin bugs, sand flies, chiggers, ticks and other biting insects may be carriers of an infectious disease. With the advent of global warming, insects and insect-borne infectious diseases are spreading to new areas. To protect yourself against contracting an insect-borne infectious disease, the Centers for Disease Control and Prevention (CDC) recommends using the following insect repellents and insecticides; they have been shown to be safe and effective, even in pregnant and breastfeeding women. Clothing, tents, and mosquito netting are ideal for first order of protection and sleeping, especially when saturated with Permethrin (which kills insects on contact).

To protect against chiggers and ticks, wear light-colored or white long pants, long-sleeved shirts, and socks so ticks can be more easily seen; pull socks over pant cuffs. Wear a hat and place petroleum jelly around hairline to keep ticks from crawling into hair (where they will be very difficult to find). Do a thorough tick check each morning & evening before entering and leaving your tent.

The CDC does not recommend other insect repellents and products as they have not been shown to be effective despite manufacturers claims. These include natural plant oils, (such as citronella oil, cedar oil, geranium oil (or geraniol), and lemongrass oil), repellents containing vitamin B1 or garlic, and wristbands and ultrasonic devices.

Application
  • Avoid spraying repellents on or near the face; instead spray on hands and then rub on face; avoid contact with the eyes and mouth.
  • Parents should apply repellents and insecticides to children.
  • Reapply regularly and if/when mosquitoes—or other insects—bite.
  • Lower concentrations provide shorter protection.

DEET
  • 30% concentration should provide protection for 6 hours.
  • 20%-23.8% concentration provides 4-5 hours of protection.
  • 6.65%-10% concentration provides about 1-3 hours of protection.
  • Concentrations over 50% offer no additional benefit.
  • Controlled-release products might offer a longer duration of protection even with lower concentrations.
  • Safe for children > 2 months in concentrations of 10%-30%.

Picaridin
  • 20% concentration provides protection for up to 7 hours.
  • 10% products provide protection for up to 5 hours.
  • Known as icaridin in Canada. Canada recommends against use in children under 6 months.

IR3535
  • 7.5% concentration provides about 10-60 minutes of protection.

Lemon Eucalyptus Oil
  • Protection for up to 2 hours.
  • Not recommended for children < 3 years.

Permethrin
  • Kills insects on contact. Apply to clothing, gear, netting, & tents; it will last through numerous washings/rain storms. Do not use directly on skin.

Interested in learning first aid? Take one of our wilderness medicine courses. Guides and expedition leaders should consider taking our Wilderness First Responder course.

Looking for a reliable field reference? Consider consider purchasing one of our print or digital handbooks; our digital handbook apps are available in English, Spanish, and Japanese. Updates are free for life. A digital SOAP note app is also available.
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WMTC Evacuation Levels — Explained

6/27/2017

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At times, the evacuation of a patient may be necessary for their further assessment, definitive treatment, and/or simply additional recovery time. All evacuations in a wilderness environment carry some inherent risk to members of the rescue party and the decision to evacuate a patient should NOT be taken lightly. The need for evacuation depends on the severity of the patient’s injury or illness and your resources. The type of evacuation depends on the mobility of the patient, the size of your party and its resources, the difficulty of terrain, the weather and the distance involved.

Any evacuation, regardless of the type—self, assisted, simple carry, litter, vehicle—should not endanger either you or your patient beyond your capacity to deal effectively with the risk presented during the evacuation. In most cases, your field treatment for minor non life-threatening injuries will be effective and rapid evacuation will not be necessary. By contrast, your field treatment for most life threatening illnesses or injuries may simply buy you and your patient some time. In these situations, focus on a quick accurate assessment and fast evacuation. The “medical window” for life-threatening problems is often specific to the particular illness or injury. If an emergency evacuation is not possible, your field treatment will usually be limited to treating the patient’s signs & symptoms and supporting their critical systems; this is often ineffective and your patient may die. In general, any problem that causes a change in the patient’s level of consciousness is very serious. If a patient reaches definitive medical care (major hospital) while they are still awake they have a reasonable chance for complete recovery. If they reach definitive care with a significantly decreased level of consciousness (voice responsive, pain responsive, or unresponsive) their chances for a complete recovery, or a recovery at all are respectively reduced.

In today’s world of rapid communication via cell or satellite phones, it may be possible to consult with medical or rescue professionals prior to initiating an evacuation. This type of consult should be encouraged and part of any emergency action plan (EAP). When in doubt, it’s always better to seek a consult sooner rather than later. A thorough patient assessment is required prior to any medical consult and the use of a detailed patient SOAP note will facilitate both accurate patient assessment and communication. At minimum, your location (GPS coordinates), party resources, and the current weather are required for a rescue consult. Conserve your batteries and set a communication schedule prior to signing off.

When you are uncertain if a evacuation is necessary and a consult is unavailable, the following general evacuation guideline may be useful: any problem that is persistent, uncomfortable, is not relieved by your treatment—or cannot be effectively treated in the field—requires an evacuation. The speed of the evacuation depends on the degree of involvement, or potential involvement, of any critical system(s). The greater the degree or potential, the faster the evacuation.

The following definitions for levels of evacuation are correlated to the severity of the patient’s injury or illness and hence the urgency and speed of their evacuation. Every effort should be made to accurately diagnose the patient’s current and anticipated problems since an incorrect diagnosis may lead to a false sense of urgency and a willingness on the part of the rescuers to accept more risk than the situation warrants. In general, rescuers should ONLY be willing to accept a level of risk they believe they can safely manage based on their skill and the foreseeable problems. Unfortunately, not all problems are foreseeable and the amount of risk any given rescuer is willing to accept tends to rise with the severity of the patient’s injury or illness. Since it is impossible to legislate judgment, rescuers, when in doubt, must base their decisions on the “worst realistic case” situation both in diagnosing the patient and evaluating the risk associated with the evacuation. That said, the risk of a minor injury or illness to a rescuer is generally present during most evacuations and unavoidable under the circumstances.

WMTC Urgent Evacuation Levels

Level 1
The patient’s injury or illness is immediately life threatening and the patient may die without rapid hospital intervention, e.g.: increased ICP, volume shock, severe respiratory distress, respiratory distress in a near drowning patient, advanced disease, moderate to severe hypothermia, HAPE/HACE etc. All VPU patients require a Level 1 Evacuation.

Level 2
The patient’s injury or illness is potentially life threatening or will result in a permanent disability; the patient may develop a life threatening problem that requires hospital intervention, e.g.: concussion that is getting worse, systemic infection, spine & cord injuries, near drowning (no respiratory distress), etc.

WMTC Non-urgent Evacuation Levels

Level 3
The patient’s injury or illness is NOT life threatening, has little or no potential to become life threatening, and may be successfully treated in the field with no permanent disability; however, the patient is unable to resume normal activity within a reasonable length of time and/or requires advanced assessment. (E.g.: concussion that is getting better, unstable injuries with good CSM, reduced shoulder (dislocation) with good CSM, etc.)

Level 4 (no evacuation)
The patient’s injury or illness is NOT life threatening, may be successfully treated in the field with no permanent disability, and the patient is able to resume normal activity within a reasonable length of time, e.g.: minor wounds, minor stable injuries, minor environmental injuries, etc.

There is typically little or no difference in the how a urgent evacuation is conducted. The difference lies in the mental preparedness and realistic expectations of the rescuers. If rescuers are not prepared for a patient death—as in a Level 1 Evacuation—research has shown that they will likely require more time to recover from post traumatic stress (PTSD) than those who recognize and accept that a patient’s death is a real possibility.
Looking for a reliable field reference? Consider consider purchasing one of our print or digital handbooks; our digital handbook apps are available in English, Spanish, and Japanese. Updates are free for life. A digital SOAP note app is also available.
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