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Hypertension following coronary artery bypass graft surgery: comparison of hemodynamic responses to nitroprusside, phentolamine, and converting enzyme inhibitor. 1978

A J Roberts, and A P Niarchos, and V A Subramanian, and R M Abel, and E L Hoover, and J C McCabe, and D B Case, and J H Laragh, and W A Gay
Department of Surgery (Cardiothoracic Surgical Division), The New York Hospital-Cornell Medical Center, New York, New York, USA.

Sustained systemic hypertension (mean arterial pressure 119 +/- 4 mm Hg) developed in 39 patients undergoing coronary artery bypass graft (CABG) surgery. In groups of patients with comparable mean arterial pressure, left ventricular filling pressure, heart rate, and cardiac output, treatment with sodium nitroprusside (NP) in 20 patients, phentolamine (PH) in 10 patients and nonapeptide converting enzyme inhibitor (CEI) in nine patients uniformly lowered mean arterial pressure by 26, 21, and 20%, respectively. Cardiac output increased during NP (5.7 +/- 0.1 to 6.4 +/- 0.3 L/min, P < 0.0005) and after CEI (5.7 +/- 0.4 to 7.4 +/- 0.5 L/min, P < 0.0005) but not after PH (5.7 +/- 0.3 to 5.9 +/- 0.3 L/min, P > 0.05). Left ventricular filling pressure decreased in all groups (P < 0.005), but heart rate increased during NP (91.3 +/- 2.4 to 98.4 +/- 2.2 beats/min, P < 0.0005 and after PH (95.5 +/- 2.1 to 99.2 +/- 3.0, P < 0.005), while it was unchanged after CEI P > 0.05). Of the nine patients with CABG hypertension who received CEI, seven exhibited a mean decrease in arterial pressure of 18.5 +/- 3.4%, while in the remaining two patients, mean arterial pressure was decreased only 3.4%. In the former, the pretreatment mean plasma renin activity (PRA) was 7.5 +/- 2.4 ng/ml/hr, while in the latter, mean PRA was 1.3 ng/ml/hr.

UI MeSH Term Description Entries
D006973 Hypertension Persistently high systemic arterial BLOOD PRESSURE. Based on multiple readings (BLOOD PRESSURE DETERMINATION), hypertension is currently defined as when SYSTOLIC PRESSURE is consistently greater than 140 mm Hg or when DIASTOLIC PRESSURE is consistently 90 mm Hg or more. Blood Pressure, High,Blood Pressures, High,High Blood Pressure,High Blood Pressures
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D011183 Postoperative Complications Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery. Complication, Postoperative,Complications, Postoperative,Postoperative Complication
D001794 Blood Pressure PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS. Systolic Pressure,Diastolic Pressure,Pulse Pressure,Pressure, Blood,Pressure, Diastolic,Pressure, Pulse,Pressure, Systolic,Pressures, Systolic
D005260 Female Females
D006339 Heart Rate The number of times the HEART VENTRICLES contract per unit of time, usually per minute. Cardiac Rate,Chronotropism, Cardiac,Heart Rate Control,Heartbeat,Pulse Rate,Cardiac Chronotropy,Cardiac Chronotropism,Cardiac Rates,Chronotropy, Cardiac,Control, Heart Rate,Heart Rates,Heartbeats,Pulse Rates,Rate Control, Heart,Rate, Cardiac,Rate, Heart,Rate, Pulse
D006439 Hemodynamics The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM. Hemodynamic
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults

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