Task: Answer Verification
Input (English): Question: Does intracoronary-administered urapidil influence myocardial contractility , metabolic activity , or coronary sinus blood flow in humans?
Answer: The results suggest that intracoronary bolus administration of preservative-free urapidil, 4 mg, is not associated with any detectable effect on myocardial contractility or coronary smooth muscle in awake nonsurgical patients with CAD, after PTCA.
Output (English): no