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  • Title: [Efficacy of a single dose of urapidil for preventing arterial hypertension during the pre-bypass period in coronary surgery].
    Author: Olmos M, Vidarte MA, Ballester JA, Lasuen J, Escobar A.
    Journal: Rev Esp Anestesiol Reanim; 2000 Oct; 47(8):337-42. PubMed ID: 11103114.
    Abstract:
    OBJECTIVES: To assess the effect of a single prophylactic dose of urapidil for arterial hypertension during the period before start of extracorporeal circulation. PATIENTS AND METHODS: Forty-four patients with good ventricular function (ejection fraction < 40%) scheduled for coronary surgery were enrolled for prospective study. The patients were randomly assigned to receive 0.5 mg/kg of urapidil (group U, n = 22) or nothing (group N, n = 22) 3 min before skin incision. If hypertension developed sodium nitroprusside was administered, starting with a dose of 0.5 microgram/kg/min. Monitoring of arterial pressure, heart rate and ST segment (DII and V5) was continuous. The study ended with cannulation of the aorta. RESULTS: The demographic features, cardiovascular history, medication and duration of surgery were comparable in the two groups. Six patients in group U (27%) and 19 in group N (86%) developed arterial hypertension (p < 0.001), the duration of which was 2.23 +/- 4.49 min in group U and 9.64 +/- 9.7 min in group N (p < 0.05). Arterial hypotension was observed in 13 group U patients and 7 group N patients (NS). No significant differences in duration of tachycardia, bradycardia or myocardial ischemia were found. CONCLUSIONS: The administration of a single dose of urapidil prevents arterial hypertension during the phase before extracorporeal circulation for coronary surgery and reduces the need for nitroprusside. No clinically relevant side effects are evident.
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