Dissimilar metals in a rib spreader a surgical electrical hazard

A case is presented and electrochemical theory is discussed in a situation in which a battery was produced between two dissimilar metals in a Finochietto rib spreader. The problem developed in the thorax of a patient undergoing transthoracic cervical sympathectomy and resection of the first rib. Caution is advised in the use of dissimilar metals in patients undergoing surgery.