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‘Hydraulic debriefing:’ Alcohol, stress, and the hidden culture of EMS

From binge rates to “crew bonding,” Dr. Maria Koeppel unpacks how pressure shapes habits — and how Gen Z is changing them

In this episode of EMS One-Stop, Rob Lawrence sits down with Dr. Maria Koeppel to explore a topic that has long existed in the shadows of EMS culture — alcohol use among providers.

| MORE: First responders and alcohol – how much is too much?

Drawing on NIH and FEMA supported research, Koeppel outlines how EMS clinicians may be engaging in higher-risk drinking behaviors than the general population, with patterns influenced by stress, exposure and workplace culture.

What emerges is not a story of individual weakness, but one of systemic pressure — where both major traumatic incidents and the accumulation of low-acuity, high-frequency calls contribute to a steady burden of stress that many providers attempt to manage off-duty.

The conversation moves beyond statistics into culture, leadership and generational change. Koeppel highlights how traditional “crew bonding” through alcohol — what one participant termed “hydraulic debriefing” — may be giving way to a new, more wellness-focused approach among younger clinicians.

At the same time, gaps in education, policy and peer support remain evident across EMS systems. For leaders, the message is clear: alcohol use is not a fringe issue, but a workforce health, safety and performance issue that requires thoughtful engagement, cultural awareness and proactive support structures.

Key quotes from Maria Koeppel

  • “Over 50% of firefighters surveyed had binge drank in the last 30 days — about twice the rate of the general population.”
  • “EMS providers tend to drink a little bit more frequently than the general population — and that’s tied directly to stress.”
  • “It’s not just the big trauma calls — it’s the micro-stressors that add up over time.”
  • “A third of clinicians in our sample engaged in high-risk drinking behaviors.”
  • “Younger clinicians are at higher risk — but that risk declines with age as coping mechanisms develop.”
  • “Paramedics are at higher risk than EMTs, likely due to increased responsibility and patient exposure.”
  • “Some described going out after shift as ‘hydraulic debriefing’ — using alcohol to process the day.”
  • “Gen Z is driving a more sober culture — they’re choosing connection without alcohol.”
  • “Leadership isn’t just policy — it’s culture, awareness and how you care for your people.”
  • “Alcohol and coping has to be part of the conversation if we care about workforce health and patient safety.”

Episode timeline

01:06 – Maria’s background: firefighter and researcher
02:24 – Overview of NIH/FEMA research and EMS focus
04:14 – Key findings: stress, frequency of drinking and EMS culture
05:08 – Micro-stressors vs. major trauma calls
06:54 – Risk factors: age, role, education, multiple jobs
10:11 – Culture and “hydraulic debriefing”
11:46 – Fire vs. private EMS cultural differences
14:38 – Generational shift: Gen Z and sober culture
19:24 – Alternative substances and coping trends
21:20 – Leadership roles: policy vs. culture
24:11 – Peer support gaps in EMS
26:41 – Workforce impact: sleep, stress, retention
27:14 – Education gap and need for EMS-specific training
29:11 – Conferences and future research dissemination
30:13 – Episode wrap-up

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Previously on EMS One-Stop

Rob Lawrence has been a leader in civilian and military EMS for over a quarter of a century. He is currently the director of strategic implementation for PRO EMS and its educational arm, Prodigy EMS, in Cambridge, Massachusetts, and part-time executive director of the California Ambulance Association.

He previously served as the chief operating officer of the Richmond Ambulance Authority (Virginia), which won both state and national EMS Agency of the Year awards during his 10-year tenure. Additionally, he served as COO for Paramedics Plus in Alameda County, California.

Prior to emigrating to the U.S. in 2008, Rob served as the COO for the East of England Ambulance Service in Suffolk County, England, and as the executive director of operations and service development for the East Anglian Ambulance NHS Trust. Rob is a former Army officer and graduate of the UK’s Royal Military Academy Sandhurst and served worldwide in a 20-year military career encompassing many prehospital and evacuation leadership roles.

Rob is the President of the Academy of International Mobile Healthcare Integration (AIMHI) and former Board Member of the American Ambulance Association. He writes and podcasts for EMS1 and is a member of the EMS1 Editorial Advisory Board. Connect with him on Twitter.