NURS 5463 TEST 1 | QUESTIONS AND
ANSWERS | 2026 UPDATE WITH COMPLETE
SOLUTION
Most common cause of hypoxia - ANSWERS-VQ mismatch
Causes of VQ mismatch - ANSWERS-COPD, asthma, ILD, PNA, increased A-a
gradient
Does VQ mismatch improve with O2? - ANSWERS-Yes
Causes of right to left shunt? - ANSWERS-anatomic (heart problems),
physiologic (PNA, ARDs, atelectasis)
Does right to left shunt respond to oxygen? - ANSWERS-difficult to correct
with O2
Causes of diffusion impairment - ANSWERS-PF, PCP, emphysema
Does diffusion impairment correct with O2? What makes it worse? -
ANSWERS-Worsens with activity, corrects with oxygen
What is the cause of reduced inspired oxygen tension? Does it correct with
O2? - ANSWERS-High altitude, yes
VQ mismatch causes _____ A-a gradient - ANSWERS-High
Hypoventilation causes a ____ A-a gradient - ANSWERS-normal
, Type of abd pain that is caused by stretching, distention, or contraction of
organs - ANSWERS-Visceral pain
Atypical s/s of AMI in older adults - ANSWERS-diaphoresis, SOB, N/V, AMS,
syncope
What differential diagnoses are most important when presenting with chest
pain? - ANSWERS-AMI, PE, PTX, aortic dissection, esophageal rupture
What is considered ST elevation in men and women? - ANSWERS-Men =
2mm
Women = 1.5mm
OR new LBBB in 2 leads
Which troponin is more specific? I or T? - ANSWERS-Troponin I is more
specific
How often to check troponins? - ANSWERS-Q6h
What 2 things can exclude PE? - ANSWERS-Negative DDIMER & low Wells
score
Paradoxical abd movement during inspiration indicates... - ANSWERS-
impending respiratory failure...indicates fatigue
If a pt c/o dyspnea, it's always important to determine if... - ANSWERS-they
have a problem with gas exchange
Hypoxia - ANSWERS-Reduced level of tissue oxygenation
ANSWERS | 2026 UPDATE WITH COMPLETE
SOLUTION
Most common cause of hypoxia - ANSWERS-VQ mismatch
Causes of VQ mismatch - ANSWERS-COPD, asthma, ILD, PNA, increased A-a
gradient
Does VQ mismatch improve with O2? - ANSWERS-Yes
Causes of right to left shunt? - ANSWERS-anatomic (heart problems),
physiologic (PNA, ARDs, atelectasis)
Does right to left shunt respond to oxygen? - ANSWERS-difficult to correct
with O2
Causes of diffusion impairment - ANSWERS-PF, PCP, emphysema
Does diffusion impairment correct with O2? What makes it worse? -
ANSWERS-Worsens with activity, corrects with oxygen
What is the cause of reduced inspired oxygen tension? Does it correct with
O2? - ANSWERS-High altitude, yes
VQ mismatch causes _____ A-a gradient - ANSWERS-High
Hypoventilation causes a ____ A-a gradient - ANSWERS-normal
, Type of abd pain that is caused by stretching, distention, or contraction of
organs - ANSWERS-Visceral pain
Atypical s/s of AMI in older adults - ANSWERS-diaphoresis, SOB, N/V, AMS,
syncope
What differential diagnoses are most important when presenting with chest
pain? - ANSWERS-AMI, PE, PTX, aortic dissection, esophageal rupture
What is considered ST elevation in men and women? - ANSWERS-Men =
2mm
Women = 1.5mm
OR new LBBB in 2 leads
Which troponin is more specific? I or T? - ANSWERS-Troponin I is more
specific
How often to check troponins? - ANSWERS-Q6h
What 2 things can exclude PE? - ANSWERS-Negative DDIMER & low Wells
score
Paradoxical abd movement during inspiration indicates... - ANSWERS-
impending respiratory failure...indicates fatigue
If a pt c/o dyspnea, it's always important to determine if... - ANSWERS-they
have a problem with gas exchange
Hypoxia - ANSWERS-Reduced level of tissue oxygenation
