A patient with acute coronary syndrome has received fibrinolytic therapy. Which of the following patient findings indicate the desired therapeutic effect of the procedure?
1. premature ventricular complexes
2. ST segment elevation
3. ejection fraction of 45 percent
4. respiratory rate of 18 per minute
1
Rationale: Thrombolysis and reperfusion of the effected myocardium may be indicated by resolution of ST segment elevation, pain resolution, and the occurrence of reperfusion arrhythmias, such as premature ventricular complexes or ventricular tachycardia. ST segment elevation could indicate myocardial infarction. Ejection fraction of 45 percent indicates mildly depressed left ventricular function. Respiratory rate of 18 per minute is a normal respiratory rate and is not an indicator of the therapeutic effectiveness of fibrinolytic therapy.
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