British Journal of Anaesthesia, 2004, Vol. 92, No. 3 400-413
© 2004 The Board of Management and Trustees of the British Journal of Anaesthesia
Review Article |
Off-pump coronary artery bypass surgery: physiology and anaesthetic management
Departments of 1 Anaesthesiology and 2 Cardiovascular Surgery, University Hospital Lausanne (CHUV), CH-1011 Lausanne, Switzerland. 3 Department of Cardiac Anaesthesiology, CHU Brugmann, B1020 Brussels, Belgium. 4 Institute of Anaesthesiology, University Hospital Zürich (USZ), CH-8091 Zürich, Switzerland 5 Present address: Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada
*Corresponding author. E-mail: donat.spahn@chuv.hospvd.ch
Increasing interest is being shown in beating heart (off-pump) coronary artery surgery (OPCAB) because, compared with operations performed with cardiopulmonary bypass, OPCAB surgery may be associated with decreased postoperative morbidity and reduced total costs. Its appears to produce better results than conventional surgery in high-risk patient populations, elderly patients, and those with compromised cardiac function or coagulation disorders. Recent improvements in the technique have resulted in the possibility of multiple-vessel grafting in all coronary territories, with a graft patency comparable with conventional surgery. During beating-heart surgery, anaesthetists face two problems: first, the maintenance of haemodynamic stability during heart enucleation necessary for accessing each coronary artery; and second, the management of intraoperative myocardial ischaemia when coronary flow must be interrupted during grafting. The anaesthetic technique is less important than adequate management of these two major constraints. However, experimental and recent clinical data suggest that volatile anaesthetics have a marked cardioprotective effect against ischaemia, and might be specifically indicated. OPCAB surgery requires team work between anaesthetists and surgeons, who must be aware of each others constraints. Some surgical aspects of the operation are reviewed along with physiological and anaesthetic data.
Br J Anaesth 2004; 92: 40013
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