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von Willebrand disease is by far the most common inherited bleeding diathesis. Frequently, the only laboratory abnormality is increased bleeding time (literally you prick the patient and see how long it takes them to stop bleeding). On Step, bleeding women have VWD. Bleeding boys have hemophilia.

winelover777  Agree. PTT does not have to be elevated to be VWD. +  

submitted by welpdedelp(79),

So I think that issue of wrist extension and/or finger drop would be more radial nerve. However, there was more proximal weakness, so it would be C7.

"7-8 lay them straight", the pt couldn't "lay them straight" so it would be C7 root

welpdedelp  *As an addition, median nerve involvement would have leaned more toward C8 than C7. +1  
meningitis  Do you have anymore useful mnemonics for brachial plexus? +  
henoch280  FA pg 494 for mnemonics +  
winelover777  Doesn't look like there are many in FA 2019. S1/S2 - Buckle my shoe. L3/L4 - Shut the door. C5/C6 - Pick up sticks. +  

submitted by keycompany(127),

Flow Rate = Velocity x Cross-Sectional Area

2 cm^2 x 20 cm/sec x 60 sec/min x 1 L/1,000 cm^3 = 2.4 L/min

1,000 cm^3 = 1 L

seagull  Well, I missed this one. I don't even feel bad. +11  
link981  @keycompany a small typo, 100 cm^3 = 1 L not 1000cm^3. 1000 mL^3= 1 L +  
hello  @keycompany how did you edit your original comment to fix your typo? +  
winelover777  Pretty sure @keycompany was correct. 1 L = 1000 cm^3. Otherwise the answer would be 24. +  

submitted by chosened(1),

Correct me if I m wrong but I think it's laryngeal papillomatosis. Papillomas can develop anywhere along the respiratory tract, but most often affect the larynx and the vocal cords (laryngeal papillomatosis). Not sure how HY this is but heres More info: https://rarediseases.org/rare-diseases/recurrent-respiratory-papillomatosis/

hyperfukus  yes you are definitely correct i think its a common wtf q that pops up bc there's one on uworld that asks if its true or false vocal cords and i had to hunt my prof down to figure it out... +  
hyperfukus  also i think they love anything that compromises the airway +  
winelover777  Shout out to Pathoma, Respiratory chapter, Larynx section, Laryngeal Papilloma heading. Only reason I got this question right. +  

submitted by xxabi(110),

Swelling of the cell (e.g., hydropic degeneration): tissue ischemia → decreased ATP production → decreased Na+/K+ ATPase and Ca2+pump activity → diffusion of Na+ and water into the cell → cellular swelling

endochondral1  can someone explain how to cross out the other choices> +1  
endochondral1  what is hydropic degneration and where do i learn about it? why is it not the loss of plasma membrane integrity? +1  
shaeking  Endochondral1, I had the same question. I tried figuring it out and this is what I came up with. The CHF and congestion of the lungs is reducing the amount of oxygen getting to the renal cells. With hypoxia there is decreased aerobic resp in mitochondria with decreased ATP. Without ATPase Na builds up and water follows. As far as the loss of membrane integrity. I think it would cause cellular destruction not just hydropic changes. This is my best guess. +1  
charcot_bouchard  Membrane damage is irreversible stage of cellular injury. if membrane is damaged cell is dying & it will shrink. or totally destroyed by inflammation. they are specifically asking hydropic changes ie cellular swelling. which is the 1st sign of reversible cell injury due to failure of Na/K pump +  
winelover777  @endochondral1 Chapter 1 of Pathoma. Also FA 2019 p207 describes hydropic degeneration without saying those exact words in the first bullet under reversible cell injury. +