Department School of Medicine(Tokyo Women's Medical University Hospital), School of Medicine Position Endowed Professor
|Unusual "ratchet syndrome": spontaneous lead retraction after a generator exchange.
|正式名：Heart and Vessels
略 称：Heart Vessels
|EJIMA Koichiro†*, SHODA Morio, YASHIRO Bun, YOSHIDA Kentaro, NUKI Toshiaki, KATO Ken, MANAKA Tetsuyuki, HAGIWARA Nobuhisa
|A 72-year-old female with idiopathic dilated cardiomyopathy underwent a generator exchange for a cardiac resynchronization therapy defibrillator with a full-pocket capsulectomy. The lead position after the operation was identical to that before the operation on the chest X-ray. After 4 months, a subacute exacerbation of her heart failure was caused by cardiac resynchronization therapy failure due to a dislodgement of the left ventricular lead. An aggressive adhesiotomy of the connective tissue around the leads made it possible for the lead to retract by a ratchet-like movement through the suture sleeve, so-called "ratchet syndrome", after the generator exchange.