Which of the following mechanically ventilated patients shows clinical signs of hyperventilation?
a. A patient who has hot skin and also long P-R intervals on the ECG.
b. A patient who has cool skin and also shows paroxysmal tachycardia on the ECG.
c. A patient who is hypertensive and agitat-ed and has S-T segment depression on the ECG.
d. A patient who is hypotensive and dyspne-ic and has widened QRS complexes on the ECG.
ANS: B
Cool skin and paroxysmal tachycardia are signs of decreased PaCO2. All the other answers are signs of hypoventilation.
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