On today’s episode of Critical Levels, we chat with Dr. Ken Milne of the Skeptics’ Guide to Emergency Medicine (https://thesgem.com; @thesgem).
We start with a high-level discussion and literature and evidence, and then apply these concepts to ‘lyse’ and ‘bust’ some of the predominate prehospital myths.
Links to the primary literature included.
Sponsored by:
Ken Milne MD, MSc, CCFP-EM. FCFP. FRRMS
Dr. Milne is a staff physician at the Strathroy Middlesex General Hospital in Strathroy, Ontario, Canada. He has been doing medical research for 40 years publishing on a variety of topics. Dr. Milne has been working clinically for 28 years and is an Associate Professor in the Department of Medicine (Division of Emergency Medicine) and Department of Family Medicine at the Schulich School of Medicine and Dentistry. He teaches evidence-based medicine, clinical epidemiology, critical appraisal and biostatistics at Western University in London, Ontario. Dr. Milne is passionate about skepticism and critical thinking. He is the creator of the knowledge translation project, The Skeptics’ Guide to Emergency Medicine (TheSGEM). Ken is married to Barb and has three amazing children.
Dr. Milne serves as a senior editor of Academic Emergency Medicine. He has no funding from the pharmaceutical or biomedical device industry. He is on faculty for the Center for Medical Education and EMRAP. Dr. Milne does partake in medical malpractice reviews and does hold a patent on a pediatric resuscitation device.
We examine:
2:00 – The importance of primary literature
4:10 – Why?
10:10 – Literature, critically appraising articles, & levels of evidence
13:20 – Evidence Based Medicine
17:30 – Guidelines & Protocols
22:22 – Epinephrine in Cardiac Arrest
- https://thesgem.com/2018/12/sgem238-the-epi-dont-work-for-ohca/
- https://www.nejm.org/doi/full/10.1056/nejmoa040325
- https://www.nejm.org/doi/full/10.1056/nejmoa1806842
28:30 – Sodium Bicarbonate in Cardiac Arrest
- https://thesgem.com/2023/02/sgem394-say-bye-bye-bicarb-for-pediatric-in-hospital-cardiac-arrest/
- https://pubmed.ncbi.nlm.nih.gov/35880872/
32:10 – Advanced Airways
- https://thesgem.com/2019/03/sgem247-supraglottic-airways-gonna-save-you-for-an-ohca/
- https://pubmed.ncbi.nlm.nih.gov/30167701/
36:10 – “Treat the patient, not the monitor”
42:05 – TTM (Targeted Temperature Management)
- https://thesgem.com/2013/01/sgem21-ice-ice-baby/
- https://thesgem.com/2021/07/sgem336-you-cant-always-get-what-you-want-ttm2-trial/
- http://www.nejm.org/doi/full/10.1056/NEJMoa012689
- https://www.nejm.org/doi/full/10.1056/nejmoa1310519
- https://www.nejm.org/doi/full/10.1056/NEJMoa2100591
48:22 – “Be Skeptical”
51:15 – TBI Management/TXA
- https://thesgem.com/2019/10/sgem270-crash-3-txa-for-traumatic-head-bleeds/
- https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(19)32233-0/fulltext
- https://caep.ca/periodicals/Volume_22_Issue_3/Vol_22_Issue_3_Page_297_-_298_Blanchard.pdf
61:05 – Final Thoughts
“No statistical difference”
Important/Relevant Articles
https://pubmed.ncbi.nlm.nih.gov/23766747/
https://www.bmj.com/content/312/7023/71
OPALS: https://www.nejm.org/doi/full/10.1056/nejmoa040325
PARAMEDIC 2: https://www.nejm.org/doi/full/10.1056/nejmoa1806842
https://pubmed.ncbi.nlm.nih.gov/35880872/
AIRWAYS 2: https://pubmed.ncbi.nlm.nih.gov/30167701/
http://www.nejm.org/doi/full/10.1056/NEJMoa012689
TTM 1: https://www.nejm.org/doi/full/10.1056/nejmoa1310519
TTM 2: https://www.nejm.org/doi/full/10.1056/NEJMoa2100591
https://onlinelibrary.wiley.com/doi/full/10.1111/acem.14312
CRASH 3: https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(19)32233-0/fulltext
Entertaining discussion
Good discussion
Interesting.
Funny how the MD, can talk about “do this”, “this works, this doesn’t”. Sounds very anti Paramedic and pre hospital ALS. There are multiple studies that contradict each other, multiple reasons we do or don’t get a ROSC pre hospital. Studies done about what does and doesn’t work pre hospital. I would like to see studies done on quality of care OHCA and ROSC patients receive in hospital, if that has any effect on outcomes. Curious to see how he runs an arrest?
A paper released on “Superglotic Airway devices associated with asphyxial physiology after prolonged CPR” Jason A. Bartos
SGA vs ET Tube
Study looked at 383 OHCA and eligibility for ECMO
PaO2 ET Tube: 71 MMHG
SGA: 58 MMHG
PaCO2; ET Tube: 55 MMHG
SGA: 75 MMHG
PH Level: ET Tube- 7.03
SGA- 75 MMHG
ECMO Eligible: ET Tube 84%
SGA- 74%
Neuro Intact Survival: ET Tube 36%
SGA 22%
Very different way of looking at what we have done for as long as we remember.