Two Cases of Minimally Invasive Right Thoracotomy Approach and Microscope-Assisted Surgery for Mitral Re-Operation; Mechanical Valve Dysfunction in the Late Operative Period

Takeshi Murakami＊	Shun Nakaji＊＊	Tomohiro Odate＊＊＊
Shinichiro Taniguchi＊	Kiyoyuki Eishi＊＊

(Department of Cardiovascular Surgery, Sasebo Central Hospital＊, Sasebo, Japan, Department of Cardiovascular Surgery, Nagasaki University Hospital＊＊, Sasebo, Japan, and Department of Cardiovascular Surgery, Oita Prefectural Hospital＊＊＊, Oita, Japan）

Case 1 of stuck valve was an 84 year old man, 25 years after mitral valve replacement （MVR） using a mechanical valve. Case 2 was a 67 year old woman, 18 years after the previous operation. These patients underwent re-do replacement of the prosthesis with a minimally invasive right thoracotomy approach using a microscope. Re-do cardiac surgery is commonly regarded high risk on account of difficulty in peeling the adhension, risk of injury to the heart, lung or large vessels, longer operation time, greater amount of transfusion, higher invasion and longer admission. In both cases however, because of microscope-assist and right thoracotomy MICS technique, we safely and successfully completed the operation without any unplanned troubles. We finally had a good course with a short admission, no perioperative transfusion or no perioperative complication.

 

Jpn. J. Cardiovasc. Surg. 51: 225-230 （2022）

Keywords：mechanical valve dysfunction; re-do mitral valve surgery; minimally invasive cardiac surgery