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Atypical s/s of AMI in older adults - ANSWER-diaphoresis, SOB, N/V,
AMS, syncope
What differential diagnoses are most important when presenting with
chest pain? - ANSWER-AMI, PE, PTX, aortic dissection, esophageal
rupture
What is considered ST elevation in men and women? - ANSWER-Men
= 2mm
Women = 1.5mm
OR new LBBB in 2 leads
Which troponin is more specific? I or T? - ANSWER-Troponin I am
more specific
, How often to check troponins? - ANSWER-Q6h
What 2 things can exclude PE? - ANSWER-Negative DDIMER & low
Wells score
Paradoxical Abd movement during inspiration indicates... - ANSWER-
impending respiratory failure...indicates fatigue
If a pt c/o dyspnea, it's always important to determine if... - ANSWER-
they have a problem with gas exchange
Hypoxia - ANSWER-Reduced level of tissue oxygenation
Hypoxemia - ANSWER-decrease in partial pressure of oxygen in the
blood
Causes of hypoventilation? Treatment? - ANSWER-CNS dep, narcs,
obesity, A-a gradient, elevated CO2......corrects with oxygen
Most common cause of hypoxia - ANSWER-VQ mismatch
Causes of VQ mismatch - ANSWER-COPD, asthma, ILD, PNA, increased
A-a gradient
Does VQ mismatch improve with O2? - ANSWER-Yes
Causes of right to left shunt? - ANSWER-anatomic (heart problems),
physiologic (PNA, ARDs, atelectasis)
Does right to left shunt respond to oxygen? - ANSWER-difficult to
correct with O2
Causes of diffusion impairment - ANSWER-PF, PCP, emphysema
Does diffusion impairment correct with O2? What makes it worse? -
ANSWER-Worsens with activity, corrects with oxygen