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Ann Thorac Surg 2003;75:786-789
© 2003 The Society of Thoracic Surgeons

Original article: cardiovascular

Left ventricular aneurysm resection with port-access surgery: a new mini-invasive surgical approach

Alessia Alloni, MDa, Mauro Rinaldi, MDa*, Fabrizio Gazzoli, MDa, Andrea M. D’Armini, MDa, Mario Viganò, MDa

a Department of Cardiac Surgery, IRCCS Policlinico S. Matteo, University of Pavia, Pavia, Italy

Accepted for publication October 1, 2002.

* Address reprint requests to Dr Rinaldi, Divisione di Cardiochirurgia, IRCCS Policlinico S. Matteo, P.le Golgi, Pavia 27100, Italy
e-mail: m.rinaldi{at}smatteo.pv.it

BACKGROUND: In recent years port-access and endo-vascular extra-corporeal circulation techniques have allowed valvular and coronary operations to be performed by mini-thoracotomy. Experience with the technique suggested application to resection of ventricular aneurysms, which are usually approached through a median sternotomy with the use of traditional cardiopulmonary bypass.

METHODS: We performed a left port-access mini-thoracotomy, with 6 to 8 cm skin incisions, in 7 patients undergoing endoventricular pericardial patch repair for anterior left ventricular aneurysm. Cardiopulmonary bypass was effected using the Heartport system. The mean interval between myocardial infarction and operation was 60.4 ± 57.7 months. Three patients developed sustained ventricular tachicardia. Mean preoperative ejection fraction was 34% ± 11%. Associated procedures were coronary bypass grafting in 2 patients and cryosurgery in 3 patients.

RESULTS: All patients survived to discharge and are alive and well after an average 14.5 months. They are all in NYHA class I –II. Postoperative echocardiograms revealed an average ejection fraction of 48.0% ± 7.5% (p = 0.006 compared with preoperative value). The 3 patients who had cryosurgery did not demonstrate any recurrence of arrhythmias.

CONCLUSIONS: Left ventricular aneurysm can be successfully treated through port-access mini-thoracotomy with endovascular cardiopulmonary bypass, avoiding median sternotomy. This mini-invasive approach allows effective ventricular remodeling. Revascularization and antiarrhythmia surgery can also be done at the same time. In case of severely reduced ventricular function this approach permits fibrillatory arrest without aortic cross-clamping. The results are also good in terms of hospitalization time and long-term survival.






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