NURS 5463 TEST 1 | QUESTIONS AND ANSWERS | 2026
UPDATE WITH COMPLETE SOLUTION
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 is 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
What is the cause of reduced inspired oxygen tension? Does it correct with O2?
Answer - High altitude, yes
UPDATE WITH COMPLETE SOLUTION
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 is 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
What is the cause of reduced inspired oxygen tension? Does it correct with O2?
Answer - High altitude, yes
