A patient with history of myocardial ischemia is to be operated for cholecystectomy, the anaesthetist would like to use:
a. Isoflurane can cause coronary steal in myocardial ischemia so can not be used for these patients.
b. Halothane and enflurane reduces the cardiac output significantly which can be detrimental in these patients.
c. So the best technique is to maintain anaesthesia on opioids especially morphine. Desflurane < 1 MAC can be used but above 1 MAC it stimulates sympathetic system and can cause tachycardia.