These videos are meant to help medical students (and anyone else) solidify knowledge in Emergency Medicine. They have not been peer reviewed and there are occasional errors (most are recorded at 2 am when the kids are asleep!). Please do not use this to guide therapy. Always consult with a doctor since every person is different and everyone's situation varies widely. Other than that, enjoy!
Can someone please explain what he did at 12:17 how did the pill stuff come to one side ? Sorry if it’s a dumb question . I’m 35 years old and my high school math is very rusty
Hey! I was wondering if you could help me with a meta-analysis I'm trying to do regarding sickle cell anemia and pre natal diagnosis methods in states of india. I would love the mentorship if possible.
Think that high specificity means the test is good ruling out disease, and high sensitivity means the test is good at ruling in disease (because it's good at picking up actual disease presence cases, even if it is not very specific e.g. for a high sensitivity but low specificity test?)
Hi, I have a question. I don't know how to obtain the same result multiplying probabilities and odds. Supose you have a 0.5 probability of event A and 0.5 probability of event B. As we multiply both events we get a 0.25 probability of event A|B. Now, I want to the same calculation using odds. 0.5 probability = 1:1 in odds. So, 1x1=1 that is equal to 1/(1+1) = 0.5. I cant find where is the error.
This was very helpful, thank you. But for this specific patient would we not want to change her metoprolol also with her history of asthma? Would we do that during this visit or wait until the infection (pneumonia) is cleared?
History of violating procedure isn’t necessarily bad… it is how the American way won two world wars… note adversary challenge in that we didn’t adhere to our doctrine all that well.
“We need to train you up because you shouldn’t have made that mistake” - look again at Dekker and also at Todd Conklin and Bob Edwards, they’re all going to call this out as inappropriate blame. Gary Wong too.
In this, note also the difference in Complication and Complexity. Ordered systems, clear and complicated, are deterministic while complex are not. You can’t make rules for non-deterministic systems. You can’t analyze such. Results vary and you’ll always have unintended consequences.
There’s a problem with assuming violation of clear procedure to be reckless. Sometimes procedures simply don’t fit. The simple or clear ones most of all. But too complicated are to cumbersome to know. The real point is procedures should be viewed as guidelines not rules as they can never account for context.
I’ve found a better chart getting at binning out these categories from James Reason via Pilots Who Ask Why May 15th, 2023 “Killing the Blame Game.” In this updated version, you can have deliberate rules violation leading to a systemic problem thus leaving the operator blameless. Alternately you can also get to specifically seeing the operator blameless. Were procedures violated? Yes - Were procedures Usable? Understandable? Accurate? - No, the context meant they were either not usable or not accurate. This sends you to Could a similar person have made the same answer? This should obviously be Yes but for the sake of devil’s advocate, we’ll say No. Was training insufficient? Obviously No but for the devil we’ll say yes and you get only to possibly negligent not definitely so. Should we say no as it cannot be sufficient as you can’t train to everything in complexity, you end up with system-induced error implying no blame to the operators. I’d be cautious with any such flows, but if you need one, I’d update yours to this one.
Very well simplified, however, I though the denominator for the incidence would have been 5 and not 6 considering that the 6th person developed cancer after the 10 year period...?
