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Eur J Cardiothorac Surg 2001;20:777-782
© 2001 Elsevier Science NL

Preoperative modeling of an optimal left ventricle volume for surgical treatment of ventricular aneurysms

Aortic and Coronary Artery Surgery Department, Research Institute of Circulation Pathology, Novosibirsk, Russia

Received 20 March 2001; received in revised form 15 June 2001; accepted 5 July 2001.

Corresponding author. Tel.: +7-383-322655; fax: +7-383-324550
e-mail: amchern{at}mail.ru

Objective: We evaluated the results of surgical treatment postinfarction ventricular aneurysms, with preoperative modeling of an optimal left ventricle volume. Methods: From January 1998 to December 2000, 41 patients underwent left ventricular (LV) aneurysm repair. There were 39 men and two women, with a mean age 45.6±6.2 years. With echocardiography study, an optimal end-diastolic volume of LV was modeled on the basis of the proper stroke index and the contractile ejection fraction (EF). A permissible area of aneurysm resection was calculated by using a difference between the initial and the projected surface area of LV. The patch position and sizes were measured preoperatively. Ventricular reconstruction was performed by using linear plasty in eight patients, septal plasty of the Stoney et al. technique in 14 patients, and endoventriculoplasty of the Dor et al. technique in 19 patients. Results: The mean NYHA functional class decreased from 2.9±0.6 to 1.6±0.7 postoperatively. The improvement of LV contracting function made itself evident in a decreased end-diastolic volume from 216±98 to 158±35 ml, and end-systolic volume from 133±85 to 80±34 ml postoperatively. The mean EF increased from 38±11 to 49±9% after operation. We noted that preoperative contractile EF corresponded with postoperative EF (49.8±11% and 49.3±9%, respectively). The projected optimal end-diastolic volume of LV estimated before operation agreed with postoperative data (152±33 ml and 158±35 ml, respectively). The hospital mortality rate was 7.3%. Conclusions: Preoperative modeling of an optimal LV volume allows for the estimation of a permissible area of aneurysm resection, the position and sizes of the patch, as well as for the prevention of an excessive reduction of the LV cavity after aneurysm repair.

Key Words: Left ventricular aneurysm • Endoventriculoplasty • Left ventricular geometry

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