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Right arrow Congenital - acyanotic

Ann Thorac Surg 2006;82:2240-2246
© 2006 The Society of Thoracic Surgeons

Original Articles: Cardiovascular

Discrepancy Between Intraoperative Transesophageal Echocardiography and Postoperative Transthoracic Echocardiography in Assessing Congenital Valve Surgery

Osami Honjo, MD, PhDa, Yasuhiro Kotani, MDa, Satoru Osaki, MD, PhDa, Yasufumi Fujita, MDa, Takanori Suezawa, MDa, Atsushi Tateishi, MDa, Kozo Ishino, MDa, Masaaki Kawada, MDa, Teiji Akagi, MD, PhDb, Shunji Sano, MD, PhDa,*

a Department of Cardiovascular Surgery, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
b Cardiac Care Unit, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan

Accepted for publication June 19, 2006.

* Address correspondence to Dr Sano, Department of Cardiovascular Surgery, Okayama University Graduate School of Medicine and Dentistry, 2-5-1 Shikata-cho, Okayama City, 700-8558, Japan (Email: s_sano{at}cc.okayama-u.ac.jp).

BACKGROUND: The purpose of this study was to investigate the discrepancy between intraoperative transesophageal and postoperative transthoracic echocardiography in assessing residual regurgitation in children undergoing valve repair.

METHODS: Forty-two consecutive children (median age, 5.1 years) who underwent valve repair for valvar regurgitation from 2001 to 2004 were retrospectively analyzed. The patients were divided into two groups: atrioventricular valve group (n = 33) and aortic valve group (n = 9). Regurgitation grade, fractional shortening, and atrioventricular inflow velocity obtained by intraoperative transesophageal echocardiography were compared with those obtained by transthoracic echocardiography at discharge (median, 11 days) and at follow-up (median, 8 months).

RESULTS: Intraoperative transesophageal echocardiography revealed specific residual lesions in 4 patients, leading to successful re-repair. Fractional shortening obtained by intraoperative transesophageal echocardiography was lower than that obtained by predischarge transthoracic echocardiography (p < 0.01). In the atrioventricular valve group, the regurgitation grade obtained by intraoperative transesophageal echocardiography was lower than that obtained by predischarge transthoracic echocardiography (0.7 ± 0.8 versus 1.4 ± 0.9; p < 0.01), and agreement between the two examinations was found in 12 patients (38%). Peak atrioventricular inflow velocity obtained by intraoperative transesophageal echocardiography was lower than that obtained by predischarge transthoracic echocardiography (p < 0.01). In the aortic valve group, there was no significant difference between the regurgitation grades in the two examinations (0.8 ± 0.8 versus 1.1 ± 0.9), and complete agreement in regurgitation grade was found in 5 (56%) of 9 patients.

CONCLUSIONS: There were considerable discrepancies between the examinations in evaluation of residual atrioventricular valve regurgitation and potential atrioventricular valve stenosis: most of the residual regurgitations were underestimated by intraoperative transesophageal echocardiography. In contrast, reasonable agreement was found between the two examinations in evaluation of aortic valve regurgitation.




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