A Surgical Case for a Huge Pulmonary Artery Aneurysm 40 Years after Waterston Operation

Norihiro Ando＊	Tsuyoshi Tachibana＊	Nobuyasu Kato＊
Satoshi Arimura＊	Hidetsugu Asai＊	Yasushige Shingu＊
Satoru Wakasa＊	Hiroki Kato＊＊	Tomonori Ooka＊
Yoshiro Matsui＊

（Department of Cardiovascular and Thoracic Surgery, Hokkaido University, Graduate School of Medicine＊, Sapporo, Japan, and Emergency and Critical Care Center, Hokkaido University Hospital＊＊, Sapporo, Japan）

Surgical cases for pulmonary artery aneurysm after palliative operation for congenital heart disease are rare. A man in his 40s underwent Waterston operation（side-side anastomosis of the ascending aorta and right pulmonary artery）for pulmonary atresia and ventricular septal defect at the age of one. Medical follow-up was continued at a local clinic without definitive repair. He had complained of exertional dyspnea and cough for one month. CT scan on admission showed a large right pulmonary artery aneurysm and atelectasis of the right lung. An urgent operation was planned for the huge pulmonary artery aneurysm. Under cardiac arrest, the proximal end-to-side anastomosis to the aorta was conducted using a Y-shaped vascular prosthesis at the previous Waterston anastomosis. The peripheral pulmonary arteries were reconstructed by inclusion technique. Percutaneous cardiopulmonary support was necessary for one day after operation due to unstable hemodynamics. He was extubated on postoperative day（POD）4 and transferred to our general ward on POD 5. He was discharged home on POD 38. He is now free from heart failure symptoms and recurrence of aneurysm one year after surgery. Careful follow-up is necessary for the dilatation of the pulmonary artery and aortic root. A definitive operation―Rastelli and closure of the ventricular septal defect―may be considered in the future if the pulmonary artery resistance is suitable for the repair.

 

Jpn. J. Cardiovasc. Surg. 47:13-17（2018）

Keywords：Waterston operation;pulmonary artery aneurysm