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32F presents with fevers, chills, & malaise x 5 days. Pt is somnolent and accompanied by her husband who denies localizing symptoms.
VS T 39C BP 120/60 HR 100 RR 14 100% RA
2/ While the RN is out of the room, the telemetry alarms for V-tach. When the RN returns, the monitor shows sinus rhythm.
Husband reports that the patient appeared to yell out and then was shivering violently for ~2 minutes.
What in this telemetry strip suggests artifact?
3/ You notice that although at quick first glance, the morphology in lead I and II might resemble a wide complex rhythm, lead III shows sinus tachycardia.
Therefore the limb leads I and II are capturing artifact (probably from movement of the patient).
1/ #MedTwitter, thanks for joining us last week for our case #tweetorial (bit.ly/38rGrZs)! We have more clinical reasoning practice for you today!
67F w/ HTN, HFpEF & RA (on chronic prednisone & PCP PPx) p/w 3 days of progressive dyspnea, malaise & productive cough.
2/ As you get more information, what clinical reasoning tool can you use to determine how the data you gather increases or decreases the probability of the diseases you’re considering?
3/ ANS: Likelihood ratio. LRs help us decide how much each test result increases or decreases the probability of a specific disease.
For example, her history of HF has an LR of ~5 for HF as the cause of her dyspnea, increasing the probability of a HF exacerbation by ~30%.
1/ #MedTwitter, we have a new edition of the “Clinical Reasoning Corner” coming this week, which means it’s time for some more clinical reasoning practice!
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Today’s chief complaint is fever & abdominal pain.
2/ You’re called to admit a 52F w/ cirrhosis 2/2 Hepatitis C who is p/w 3 wks of progressive abdominal distension, and 2 days of abdominal pain & fevers.
She has a fever to 38.6C, scleral icterus, a diffusely tender abdomen, and a positive fluid wave.
3/ You and your colleague wonder whether or not she has ascites and recall a number of physical exam findings associated with it.
What clinical reasoning tool can you use to determine how each exam finding impacts the probability of ascites?