In this episode, Dr. Patrick Fink reviews accidental hypothermia for wilderness providers, building on Ep. 27 Thermoregulation, explaining physiologic changes as core temperature falls  and why accurate core temperatures are difficult to obtain in the field. 

We learn the modified Swiss staging system (0–4) based on signs and symptoms and outlines field management: 

- 0 cold stress (shelter, dry/insulate, warm calories; avoid alcohol), 

- 1 mild hypothermia (ataxia/fine motor impairment; passive plus active external rewarming with a hypothermia wrap and heat near axilla/groin; frequent reassessment), 

- 2 moderate hypothermia (confusion/lethargy; active external rewarming, evaluate hypoglycemia, gentle handling and no exertion to avoid afterdrop, cardiac monitoring, expedite evacuation), 

- 3 severe hypothermia (unresponsive with vital signs; airway/ventilation support, extremely gentle transport)

- 4 hypothermic cardiac arrest (60-second pulse check, CPR, limited shocks under 30°C, withhold epinephrine/amiodarone under 30°C, consider intermittent CPR per protocol, and note potassium’s role in termination decisions). 

We also briefly contrasts slow non-extracorporeal warming with ECMO/cardiopulmonary bypass, previewing a future episode on advanced care and the HOPE score

Links

Episode 27: Thermoregulation

WMS 2019 Accidental Hypothermia Guideline

AHA Hypothermia Guidelines

European Resuscitation Council Hypothermia Algorithm

Chapters:

00:00 Welcome and Overview
00:48 Hypothermia Basics
01:12 Cooling Physiology
04:06 Severe Effects and Arrhythmias
06:38 Field Temp Challenges
07:41 Swiss Staging Intro
08:35 Stage 0 Cold Stress
11:40 Stage 1 Mild Hypothermia
16:04 Stage 2 Moderate Hypothermia
20:44 Afterdrop and Handling
22:54 Stage 3 Severe Hypothermia
27:00 Stage 4 Cardiac Arrest
27:57 CPR Shocks and Drugs
37:01 Advanced Rewarming ECMO
43:26 Key Takeaways Summary
46:57 Wrap Up and Support

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Reevaluating Spinal Motion Restriction: Evidence Update

In this episode of Wilderness Medicine Updates, host Dr. Patrick Fink delves into the evolving guidelines and practices concerning spinal motion restriction. Drawing from historical dogma and modern research, Patrick explores the inefficacies and potential harms of traditional spinal immobilization tools like rigid spine boards and cervical collars. Instead, he advocates for more flexible, evidence-based approaches such as using well-padded surfaces and coaching patients to minimize their own motion. Key points from a comprehensive literature review by the National Association of EMS Physicians and other authoritative bodies are discussed, highlighting the shift from immobilization to motion restriction and its practical implications. Listeners are urged to stay updated with current evidence and consult medical directors before altering their practices.

Links

Ep. 14 - Spinal Immobilization Guidelines Update

2018 ACEP/NAEMSP Sminal Motion Restriction Position Statement

Prehospital Trauma Compendium: Prehospital Management of Spinal Cord Injuries - A NAEMSP Comprehensive Review and Analysis of the Literature

Chapters

00:00 Introduction to Wilderness Medicine Updates

00:42 Historical Perspective on Spinal Immobilization

01:44 Transition to Spinal Motion Restriction

03:30 Review of Recent Literature

05:40 Key Findings on Spinal Motion and Neurological Outcomes

09:30 Effectiveness of Backboards and Cervical Collars

12:10 Potential Harms of Immobilization Tools

16:38 Practical Recommendations and Future Directions

21:48 Conclusion and Final Thoughts

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Wilderness Orthopedics: Managing Trauma in Remote Environments with Dr. Chris Healy

In this episode of Wilderness Medicine Updates, host Dr. Patrick Fink tackles orthopedic injuries in the wilderness with Dr. Chris Healy, an orthopedic surgeon and outdoor enthusiast. They explore the management of long bone fractures, traction for femur, pelvic binders, and the nuances of treating injuries in limited-resource environments. The episode covers strategies for handling common injuries like shoulder dislocations, tibia fractures, knee injuries, and how to prioritize care. They also emphasize the importance of timely evacuation and when and how to safely attempt reductions in the field.

Links:

Donate to the Tina Biddle Memorial Scholarship

Sulcus sign / Squaring of the shoulder

Chapters:

00:00 Introduction and Episode Overview
01:36 Tribute to Tina Biddle
04:09 Meet Dr. Chris Healy
05:11 Ski Patrol Background and Pre-Hospital Care
08:12 Approaching Orthopedic Injuries in the Field
17:50 Managing Tibia and Fibula Fractures
21:40 Understanding Compartment Syndrome
27:50 Femur Fractures and Traction Splinting
36:57 Pelvic Fractures: Identification and Management
38:41 Understanding Pelvic Fractures and Binders
39:53 The Role of Pelvic Binders in Pre-Hospital Care
41:11 Challenges with Pelvic Binders in the Field
43:15 Proper Placement of Pelvic Binders
46:36 Field Management of Shoulder Dislocations
50:43 Techniques for Reducing Shoulder Dislocations
54:17 Managing Upper Extremity Injuries
57:51 Handling Knee Injuries in the Field
01:00:37 Patella vs. Knee Dislocations
01:08:06 Evacuation Priorities for Knee Dislocations
01:10:53 Common Issues in Pre-Hospital Orthopedic Care
01:15:36 Final Thoughts and Listener Engagement

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Understanding Stress Injuries in First Line Responders with Laura McGladrey

This episode of Wilderness Medicine Updates, hosted by Patrick Fink, features a conversation with Laura McGladrey, founder of the Responder Alliance. They discuss the critical issue of stress injuries among first line responders, including professional ski patrollers, healthcare workers, and rescue team members. Through personal stories and expert insights, Laura explains the concept of stress injuries, how they develop, and the importance of early detection and mitigation. The episode highlights the need for both individual and organizational strategies to support resilience and manage stress. Listeners are introduced to practical tools, cultural shifts, and personal anecdotes to help maintain a long, healthy, and fulfilling career in high-stress environments.

Links

Responder Alliance Home Page
Access all that the organization has to offer.

Responder Alliance: Resource Hub
Easy access to critical tools and offerings.

The Stress Continuum
See the visual continuum that we discuss on the show.

Scholarships: Responder Alliance Foundation
Apply for aid for an individual or team training.

Make a Donation to Responder Alliance Foundation!
Join me in making a tax-deductible donation to support the valuable work of the Responder Alliance and bring this work to those who need it, regardless of cost.

Chapters
00:00 Introduction and Guest Welcome
02:11 Laura's Background and Work
06:00 Understanding Stress Injuries
10:02 Responder Alliance Mission and Challenges
20:55 Critical Incident Stress Management
30:49 Empowering First Responders
32:13 Daily Investments in Resilience
37:26 Recognizing and Managing Stress
38:14 Organizational Support for Stress Management
39:45 Building Resilient Teams
46:12 Learning from Resilient Leaders
52:42 Resources for Stress Mitigation
57:54 Conclusion and Final Thoughts

As always, thanks for listening to Wilderness Medicine Updates, hosted by Patrick Fink MD FAWM.

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In this episode of Wilderness Medicine Updates, host Patrick Fink delves into the topic of thermoregulation, explaining how our bodies regulate temperature in response to environmental changes. Listeners will learn about methods of heat exchange (conduction, convection, radiation, and evaporation), how to measure core temperature, and the body's physiological responses—such as shivering, sweating, and blood flow control. 

The episode also touches on the effects of age, metabolic stressors, and pregnancy on thermoregulation, as well as the importance of understanding these principles in the context of treating conditions like hypothermia and heat-related illnesses.

00:00 Introduction and Episode Overview
01:29 Importance of Thermoregulation
03:12 Human Thermoregulation Mechanisms
04:20 Measuring Core Temperature
07:55 Heat Exchange Methods
14:52 Behavioral and Physiological Responses
24:48 Sex and Age Differences in Thermoregulation
27:14 Conclusion and Next Steps

As always, thanks for listening to Wilderness Medicine Updates, hosted by Patrick Fink MD FAWM.

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In this episode of Wilderness Medicine Updates, host Patrick Fink delves into groundbreaking technology designed to improve safety during avalanche events. The focus is on SafeBack SBX, a Norwegian-developed device that supplies air to users buried in avalanches, potentially extending survival time. Patrick reviews new research published in the Journal of the American Medical Association, which demonstrates significant efficacy in delaying hypoxia during simulated avalanche burials. The episode provides an in-depth analysis of SafeBack SBX, its mechanisms, study results, and its comparative and complementary role alongside existing safety technologies like airbags. Concluding with potential applications and limitations, Patrick aids listeners in deciding whether SafeBack SBX is a worthy addition to their avalanche safety gear.

Links

Eisendle F, Roveri G, Rauch S, et al. Respiratory Gas Shifts to Delay Asphyxiation in Critical Avalanche Burial: A Randomized Clinical Trial. JAMA. Published online October 08, 2025. doi:10.1001/jama.2025.16837

Articles I've written about Safeback:

Suffocation or Survival: A Crucial Factor in Avalanche Burials

Avalanche Safety: Assessing the Safeback SBX System

First Look: Safeback SBX Avalanche Safety System

Chapters
00:31 Overview of SafeBack SBX Technology
02:55 Importance of SafeBack in Avalanche Safety
05:40 Details of the SafeBack Study
07:53 Study Results and Analysis
11:07 Implications and Future Directions
15:50 Conclusion and Final Thoughts

As always, thanks for listening to Wilderness Medicine Updates, hosted by Patrick Fink MD FAWM.

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On this episode of Wilderness Medicine Updates, host Patrick Fink shifts focus from the science and literature of wilderness medicine to practical fitness tips for search and rescue personnel, ski patrollers, and outdoor rescuers. Patrick interviews Rob Shaw, founder and head coach of the Mountain Tactical Institute, about his specialized training programs for various types of mountain athletes, including those in industrial and tactical roles. They discuss the nuances of preparing for seasonal work, the distinct fitness demands of ski patrollers versus search and rescue members, and the importance of chassis integrity and mental fitness. Rob highlights minimal equipment training plans that can be effective for mountain professionals and recreational athletes alike, and offers a special discount for the show's listeners. Additional topics covered include Rob's nutritional recommendations and the concept of the 'quiet professional,' someone deeply committed to the craft of their work. 

Offer

Are you involved in mountain or wilderness rescue? Rob is offering the first 50 listeners who reach out to him a 20% discount on a training plan. Send your rescue or professional credentials to [email protected] to secure your discount.

Links

Training Plans Patrick Likes:

Mountain Base Fitness Greek Heroine Series

Busy Dad Training Packet 

Backcountry Ski Preseason Training Plan
 

Exercises Discussed:

Leg Blasters

Scotty Bobs

Touch Jump Touch
 

Rob's Resources:

Ideal bodyweights for mountain athletes

Nutritional guidelines

Mountain/Wilderness SAR Fitness Assessment Training Plan

Resilience vs. Discipline vs. Perseverance: Why the Distinctions Matter in Mental Fitness

The 8 Core Attributes of Mental Fitness

Chapters

00:00 Introduction to Wilderness Medicine
00:46 Guest Introduction: Rob Shaw from Mountain Tactical Institute
04:38 The Evolution of Mountain Tactical Institute
06:58 Training for Mountain and Tactical Athletes
11:43 Fitness Demands for Ski Patrol
19:13 In-Season Training and Professionalism
24:47 Fitness for Search and Rescue Volunteers
25:10 Integrating Training with Daily Life
25:15 Physical and Mental Demands of SAR
25:38 Uphill Endurance and Chassis Integrity
26:25 Step Ups and Efficient Training Methods
28:23 Chassis Integrity Explained
31:53 Mental Fitness and Resilience

As always, thanks for listening to Wilderness Medicine Updates, hosted by Patrick Fink MD FAWM.

Connect with us by email at [email protected].

You can pay us a compliment and share the show with a new listener on any popular platform here.

In this episode of Wilderness Medicine Updates, host Patrick Fink breaks down a recent research paper on the differences between simulated avalanche burial and tree well burial, analyzing the findings and their implications for skiers and outdoor rescue personnel. 

We then transition to a special Q&A session with pre-med student Zack Majd, tackling questions about forming a career in wilderness medicine. Patrick discusses the necessary educational paths, the benefits and limitations of fellowships, and the essentials of wilderness medical training. Additionally, the episode highlights upcoming educational events and provides practical advice on wilderness medical gear, psychological support techniques, and the integration of wilderness medicine with other medical disciplines. A must-listen for anyone interested in advancing their career in the field of wilderness medicine.

Links:

Kanaan NC, Abdul Cader J, Krakker J, Beasley H, Grissom CK, McIntosh SE. Simulated Avalanche vs Tree-Well Burial Effects on Human Physiology. Wilderness & Environmental Medicine. 2025;36(3):361-367. doi:10.1177/10806032251337476

Van Tilburg C, Paal P, Strapazzon G, et al. Wilderness Medical Society Clinical Practice Guidelines for Prevention and Management of Avalanche and Nonavalanche Snow Burial Accidents: 2024 Update. Wilderness & Environmental Medicine. 2023;35(1_suppl):20S-44S. doi:10.1016/j.wem.2023.05.014

Fink PB, Wheeler AR, Smith WR, et al. Wilderness Medical Society Clinical Practice Guidelines for the Treatment of Acute Pain in Austere Environments: 2024 Update. Wilderness & Environmental Medicine. 2024;35(2):198-218. doi:10.1177/10806032241248422

EP. 21 - Snow Immersion Suffocation 

Chapters:

00:00 Introduction and Episode Overview

00:43 Upcoming Events in Wilderness Medicine

Part 1

02:07 Tree Well Burials vs. Avalanche Burials

05:36 Study Findings and Analysis

08:23 Limitations and Implications of the Study

Part 2

11:21 Q&A: Careers in Wilderness Medicine

12:48 Zach's Journey and Career Questions

20:35 Balancing Wilderness Medicine with Other Careers

26:05 Pathways to Wilderness Medicine

30:32 Debating the Value of Wilderness Medicine Fellowships

32:21 Personal Experience with Wilderness Medicine Fellowship

34:29 Research in Wilderness Medicine

37:05 Essential EMS Gear for Wildland Firefighters

39:19 Prioritizing Care in Wilderness Settings

47:31 Psychological First Aid in Wilderness Medicine

50:49 Preparing for Wilderness Medicine Challenges

53:55 Future of Wilderness Medicine

57:33 Signoff

As always, thanks for listening to Wilderness Medicine Updates, hosted by Patrick Fink MD FAWM.

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In this episode of Wilderness Medicine Updates, Dr. Patrick Fink discusses airway management in austere situations with Dr. Nicholas Weinberg. They explore two cases published in the Wilderness Medicine Journal, detailing the decision-making processes in managing critically injured patients. Dr. Weinberg shares his background in emergency and wilderness medicine, and highlights the importance of flexibility and the application of basic life support techniques in the wilderness. The episode emphasizes the significance of understanding the limitations and capabilities of the available tools in wilderness settings.

Links

WEM Article

Photo: Ledge from the fallen climber

Photo: Himalayan clinic resuscitation

Connect with Dr Weinberg: [email protected]

Timeline

00:00 Introduction and Overview

00:26 Meet Dr. Nicholas Weinberg

01:48 Dr. Weinberg's Background and Career

03:55 Case Introduction: The Climbing Accident

05:38 On-Scene Response and Initial Assessment

08:11 Airway Management and Rescue Coordination

11:05 Patient's Condition and Medical Interventions

18:34 Patient's Recovery and Conclusion

21:01 Reflecting on a Remarkable Case

21:30 Discussing the Second Case

22:59 Experiences in Wilderness Medicine

25:24 Challenges and Strategies in Remote Medical Care

30:31 Managing Airway in Austere Environments

37:42 Advice for Aspiring Wilderness Physicians

42:24 Concluding Thoughts and Listener Shoutouts

As always, thanks for listening to Wilderness Medicine Updates, hosted by Patrick Fink MD FAWM.

Connect with us by email at [email protected].

You can pay us a compliment and share the show with a new listener on any popular platform here.

Exploring Xenon Gas for Altitude Acclimatization and Sport Performance
In this episode of Wilderness Medicine Updates, host Patrick Fink delves into the use of inhaled xenon gas for sports performance enhancement and altitude acclimatization. The discussion is prompted by a recent claim from a UK climbing team that xenon helped them achieve a rapid ascent of Mount Everest. Xenon, a noble gas traditionally used as an anesthetic, has been shown to trigger hypoxia response pathways and boost EPO levels in animal studies. However, human trials have yet to demonstrate significant performance benefits or lasting changes in blood composition. The episode also examines the safety concerns and potential risks associated with unsupervised xenon use. While xenon shows some promise, current evidence suggests it may be more of a placebo effect rather than a reliable tool for enhancing athletic performance or altitude adaptation.

Join us on social!
Instagram - Wildmedupdates
Bluesky - wildmedupdates.bsky.social
X - Wildmedupdates
YouTube - WildernessMedicineUpdates

Chapters
00:00 Introduction to Wilderness Medicine Updates
00:19 Xenon Gas in Sports and Altitude Acclimatization
02:26 The Science Behind Xenon Gas
06:13 Human Studies on Xenon Gas
12:19 Risks and Side Effects of Xenon Gas
15:50 Conclusion and Final Thoughts
18:04 Social Media Announcement

Sources
Dias, K.A. et al. (2019). Effect of acute and chronic xenon inhalation on erythropoietin, hematological parameters, and athletic performance. Journal of Applied Physiology, 127(6), 1503-1510

Lawley, J.S. et al. (2019). Safety, hemodynamic effects, and detection of acute xenon inhalation: rationale for banning xenon from sport. Journal of Applied Physiology, 127(6), 1511-1518

Ma, D. et al. (2009). Xenon preconditioning protects against renal ischemic-reperfusion injury via HIF-1α activation. Journal of the American Society of Nephrology, 20(4), 713-720

Pappas, S. (2023). “Did Inhaling Xenon Gas Really Help Mount Everest Climbers Reach the Summit in Record Time?” Scientific American

Hackett, P. (2025). “Xenon Gas and High-Altitude Performance: What We Know and What We Don’t.” Uphill Athlete

As always, thanks for listening to Wilderness Medicine Updates, hosted by Patrick Fink MD FAWM.

Connect with us by email at [email protected].

You can pay us a compliment and share the show with a new listener on any popular platform here.