The authors describe a simple method to perform left ventricular biops
ies during open heart surgery. An automatic gun shaped device is used
by one hand of the surgeon: the sample is obtained in a few seconds, a
t any time of the surgical procedure. It consists of a transmural piec
e of tissue, averaging 18 mm(3) in quantity. The device has been used
in 20 patients who underwent coronary artery revascsularization. All t
he biopsies were successful. No complications occurred.