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Ketamine

If there was ever a place for it, the PREHOSPITAL setting is a good place to start.
JEMS ketamine considerations
NY.HEALTH EMS Policy- Ketamine
UPToDATE drug information
Ditchmedics.com Ketamine wonder drug article
Ditch Medics Ketamine wonder drug
Montana AMR Ketamine presentation.pdf
N.Y.health ems policy
Montana ketamine AMR presentation PDF

Why is Ketamine a must in the prehospital setting...

Ketamine Links below...

When used correctly this medication has huge benefits.

Pros 
  • Lowest morbidity and mortality rate of any analgesic, sedative, anesthesia.
  • Treats pain, anxiety, and depression
  • Very low respiratory effects, a.k.a. doesn't suppress respiratory drive.
  • Bronchodilator.
  • Hypotensive safe
  • Rapid Onset both IV/IM
  • Asthma treatment limiting RSI criteria
  • Safest/generally most effective excited delirium medication
  • Safe for kids.
  • Most countries have classified Ketamine as pregnancy class B, US lists it as Class C or X
  • Most recent evidence based practice proves that Ketamine is trauma safe, head injury safe, seizure safe, sepsis safe, renal safe, and has almost no known medication interactions.



​Cons
  • Many in the medical community (MD's, CRNA, RN's Medics...) are not always educated on it.
  • There is a fear from the 1980-90s use for procedural sedation.
  • Hallucinations
  • Lack of research (especially in rural setting).
  • Really...    Its a bunch of out-of-date medical personal who don't keep up with standards of practice.  Grr...   

Ketamine Pharmacology and Dosing

Ketamine is a NMDA blocker and is able to provide a wide range of therapeutic effects.  It also competes with opioid receptors and catecholamine receptors (inotropic and chronotropic effects). 

Those who don't know what NMDA stands for:  N-Methyld-D-asparatate receptor and is essentially a neurotransmitter and memory component.  

Ketamine is metabolized in the liver.

Onset is very quick with IM 2-10 minutes- typical effects are witnessed at 2-3 minutes.

IV doses should be pushed slowly and/or accompanied by a benzo, preferably Versed.  

All of Ketamine's abilities are not fully understood, however because it has very sympathomimetic properties and its dissociative properties allow many various uses.  

Many anesthesia groups will try to simplify its properties to "a hallucenagenitc like propofol. "  Don't fall into this idea.  Ketamine has very potent sympathetic interactions while propofol has a parasympathetic dominance.  Even though both target similar receptors, they do not have the same action mechanism.  Ironically some anesthesia departments use the two together as Ketafol, an entirely different conversation at a different time.

"However, this shared belief is not referenced in the American College of Emergency Physicians’ guidelines for ketamine use in the ED, for instance, so it is not actually true. In fact, this misguided principle is based on data from the 1960s and 1970s that has been quoted for decades. - See more at: http://www.pharmacytimes.com/contributor/craig-cocchio-pharmd/2015/09/is-ketamine-really-sympathomimetic#sthash.WBSliuzu.dpuf"


Doses, tricks and critical concepts.

For agitation, violent, or delirium patients, it is widely accepted that IM doses should be 4-5mg/kg with many services selecting a standard 5mg/kg dose. 

IV doses are much different.  We see many places utilize 0.1-0.25-0.5 mg/kg for pain management.  We also see many utilizing 1.5-2 mg/kg for RSI or procedural sedation.  

Sick patients or Septic patients should have considerations on dosing.

It is expected that 12% of patients with have hallucinations or an emergence reaction - it is in good practice to sedate the patient with a benzo after initial sedation typically before they wake or stir.  I will say I often give a milligram or 2 of versed just as they start to move out of sedation.  Or when sedating for RSI, once they are under I will follow with more ketamine or benzo's.  I try to never allow a patient to wake from sedation for RSI, without consulting an MD or recievining facility.  

In the USA Ketamine is a Pregnancy Class C drug.  However it still recognized in some circles as a class X.  It should be noted that other countries and some current studies are re-analizing the effects in pregnant women.  It is always best to consult an MD for use of any medication in pregnant women.

One of the best educational podcasts on ketamine I have used over and over again credit to flightbridgeed.com

Ketamine Articles (these are not all EMS specific)

(Vid) Ketamine Analgesia in the ED
(Vid) Procedural Sedation with Ketamine
(EMS1) Ketamine Drug Whys
(Vid) Ketamine -Florida EMS Training
(EMS1) 3 Reasons to use Ketamine
(vid) Pre Hospital Ketamine
Prehospital Use of IM Ketamine for sedation of Violent and Agitated Patients
Uptodate Management of acute pain in the patient chronically using opioids
UptodaTE ketamine drug info
JEMS Article Ketamine Considerations

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All information scenarios, blog entries, topics and information are HIPPA compliant.  Letters, documents, shareable resources have names, locations and dates removed.  Any likeness to situations or medical emergencies or any likeness to patient conditions are educational material and to not reflect actual calls or patients.  In short all EZ-EMT.org documents are available for use and distribution unless otherwise noted. All images are either used from shared/public/personal resources and/or are cited when appropriate.  

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We have a combined total of thousands of calls from many locations and any likeness is strictly coincidence. We take HIPPA, FISSA and company policies very seriously.
  • Home
  • Meet the Team
  • TRAINING/EDUCATION
  • Resources
  • RSI/DSI
  • Philosophy
  • Hands on Education brought to your agency
  • Sedation/Paralytics Page
  • Contact
  • Ketamine
  • TRAUMA RESUSCITATION
  • Sepsis
  • NARCAN/NARCANT
  • Sedation of da Crazy Page
  • ONLINE EMT COURSE (SEE DETAILS BELOW)
  • New Page
  • OHCA
  • Acronyms and Helpers