Spinal Anesthesia Using Ultra-Low-Dose Isobaric Bupivacaine with Intrathecal Morphine-Fentanyl for Bilateral Low Extremity Procedures in a Geriatric Patient with Recent Myocardial Infarction and Percutaneous Coronary Intervention.

Abstract

A recent inferior ST-elevation myocardial infarction and percutaneous coronary intervention in an elderly female patient scheduled for bilateral lower extremity operations simultaneously represent significant risks for re-infarction and mortality. Our index patient required an above-knee amputation of the left leg to prevent infection/progressing gangrene as well as application of a back-slab for the conservative management of a fractured right femur. We employed spinal injection of ultra-low-dose 0.5% isobaric bupivacaine 4 mg with morphine 75 mcg plus fentanyl 10 mcg which provided adequate anesthesia for radical amputation, effective postoperative analgesia and good hemodynamic stability.