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  1. zmedic

    Alright smart people, name that EKG

    Show me a 12 lead, otherwise I don't think it's super useful to try to diagnose a 2 lead for anything other than rhythm.
  2. zmedic

    Volunteer Fire Department Runs Over Victim

    I'd argue that the warning lights make it harder to see someone on the road. Your brain is dealing with changing colors, sudden changes in intensity, movement of the lights themselves. Your brain probably would take longer to process that there was something in the road than if you were just...
  3. zmedic

    ecg question

    The risk is that you spend time worrying about the ECG rather than doing your paperwork, monitoring the patient, radio coms, vital signs etc all things that are more important in this case. Also what do you do once you find something? You now have to tell the doc, and they have to work it up...
  4. zmedic

    Robbin's, Harrison's or something else?

    Anatomy: I like Moore's "clinically oriented anatomy" ECG: ECGs for the emergency physician, by Mattu http://www.amazon.com/ECGs-Emergency-Physician-Amal-Mattu/dp/0727916548 Pathology: Robbins is good but hard to read just on your own, there is a shorter version that might work well if you...
  5. zmedic

    ecg question

    Also, why were you doing an ECG on a 25 year old with a leg injury? If he didn't have any symptoms you should be doing one because: 1: Waste of time 2: Wast of electrodes 3: Your chances of finding something meaningless that you worry about is much more than your chances of finding cardiac...
  6. zmedic

    Deputy dies after doing mouth to mouth on infant

    wait, how do they know that he caught the bacterial infection from the kid he was doing CPR on? He could have gotten sick from something else, and since it was around the same time they thought it was the CPR.
  7. zmedic

    Volunteer Fire Department Runs Over Victim

    I will say this, I was driving my personal car the other day and there was someone walking in the unlit road, dressed head to toe in black at night, with a black scarf covering her face. Even with headlights I didn't see her till about 30 feet away. Fortunately I was going about 15mph and was...
  8. zmedic

    Basic CPR Question

    For asystole sure, but are you really pronouncing PEA/ persistent V-fib in the field? I think those should be transported so the ER can deal with possible causes like electrolyte abnormalities or hypothermia or whatever.
  9. zmedic

    Wemt

    There are some outdoor guiding companies that require their leaders to have WEMT or WFR. (Outwardbound/NOLS type places). My SAR team required first aid and CPR but there was the expectation that we would be working on getting our WFR or WEMT.
  10. zmedic

    Basic CPR Question

    Wait, do you think the weight limit is only in the extended position? Also, they certainly can tip, especially when you have someone riding on top raising the center of gravity.
  11. zmedic

    Basic CPR Question

    I'd point out that some stretchers have a 400 lb weight limit. If you have a 250lb patient, 02 tank, monitor etc it isn't really appropriate for you as a 200lb provider to jump on top. Lot of liability if the stretcher collapses.
  12. zmedic

    Upgrade from EMT-B to Wilderness?

    Also when you are stressed, people in your group are freaking out, it's raining etc., that isn't an enviroment that is great for creativity and improvisation. It's much easier to say "this guy hurt his shoulder, activate my practiced script for slinging a shoulder." The class is also good for...
  13. zmedic

    Gotta Love 18 year olds....

    I get older and they stay the same age.
  14. zmedic

    Activated charcoal not so active anymore

    The procedure is going to be basic support of ABCs, monitor vital signs, and gather info at the scene (pill bottles, etc). Not much specific antidotes that have to be done quickly, maybe bicarb for aspirin ODs but truth is we don't see many of those, they are hard to diagnosis in the field...
  15. zmedic

    Activated charcoal not so active anymore

    I know people who advocate against putting it down the NG tube. It's a big mess, the patient is gagging. And they feel like you are at higher risk of aspirating once you start going with an NG tube. They are also not big fans of the lavage.
  16. zmedic

    Activated charcoal not so active anymore

    Okay, couple of things: There is pretty much no real evidence that activated charcoal prevents mortality. It makes sense theoretically but it hasn't really been born out in practice. The reason is is going away is because if the person has taken something that reduces their level of...
  17. zmedic

    Cardiac Cell / Electrolyte Questions

    There is a difference between myocardial cells and pacemaker cells. Check these two pages out for a good picture of the electrical potential difference http://www.cvphysiology.com/Arrhythmias/A004.htm http://www.cvphysiology.com/Arrhythmias/A006.htm The basics of an action potential are the...
  18. zmedic

    Cardiac Cell / Electrolyte Questions

    Please show me a source that the cell can fire multiple APs after you shut off the ATP pump. Without the pump the leak eliminates the gradient, and there is no potential difference.
  19. zmedic

    Cardiac Cell / Electrolyte Questions

    I disagree with the beginning of the post. There is a total force on each ion, comprised of the concentration gradient and the electrical potential. But it is a total force. So the potassium ion either wants to diffuse into the cell or out of the cell, not both. If you have a channel that...
  20. zmedic

    Cardiac Cell / Electrolyte Questions

    Here's the short answer. The inside is net negative because there is a 3 to 2 Na/K+ pump, so for every 2 K+ pumped in, 3 Na are pumped out. Since you are pumping out more positive than you are pumping in, it makes the inside negative. There actually are ions moving during "rest." There is a leak...
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