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Canadian Journal of Anesthesia, Vol 28, 244-247, Copyright © 1981 by Canadian Anesthesiologists' Society

The Effects of Vascular Catheterizations upon Heart Rate and Blood Pressure before Aorto-Coronary Bypass Surgery

LUC QUINTIN M.Sc., M.D.1, DAVID G. WHALLEY M.B., Ch.B., F.F.A.R.C.S., F.R.C.P.(C)1, J. EARL WYNANDS M.D., F.R.C.P.(C)1, and J. E. MORIN M.D., F.R.C.S.(C)1

1 Cardiovascular Thoracic Surgery Service; Royal Victoria Hospital, McGill University, Montreal, Quebec

Address for reprints: J. Earl Wynands, M.D., Department of Anaesthesia, Royal Victoria Hospital, 687 Pine Ave West, Montreal, Quebec, H3A 1A1.

Ten patients presenting for aorto-coronary bypass surgery were premedicated with their regular dose of propranolol and nitrates and diazepam 0.15 mg·kg-1 by mouth, morphine 0.15 mg·kg-1 and scopolamine 0.4 mg intramuscularly, 60 to 90 minutes before arrival in the operating room.

Venous, arterial and pulmonary artery catheterizations were done under local anaesthesia. No significant changes were noted in systolic blood pressure and rate pressure product.

Heart rate was decreased after internal jugular puncture and for the remainder of the study. Pacoco2 increased and Paoo2 decreased from values obtained the day before operation. Cardiovascular stability during vascular catheterization was achieved by emphasizing a detailed preoperative explanation, maintenance of beta-blockade up to the time of operation, substantial sedative premedication, and the liberal use of local anaesthesia.

Key Words: MEASUREMENT TECHNIQUES • vascular catheterization • Blood pressure • heart rate






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Copyright © 1981 by the Canadian Anesthesiologists' Society.