On admitting a client, the nurse finds a history of myocardial ischemia. What is the most disconcerting dysrhythmia that electrocardiography can reveal for this client?
a. Sinus bradycardia
b. Sinus dysrhythmia
c. Ventricular tachycardia
d. Atrial fibrillation
C
Ventricular tachycardia would be the most disconcerting dysrhythmia of the four options. Ven-tricular tachycardia results in a decreased cardiac output; it may lead to severe hypotension, loss of pulse, and unconsciousness.
Sinus bradycardia would not be of concern for this client. It is of no clinical significance unless it is associated with signs and symptoms of a decreased cardiac output.
Sinus dysrhythmia is of no clinical significance unless dizziness occurs with a decreased heart rate.
Atrial fibrillation is not as detrimental as ventricular tachycardia.
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