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Methods: Sixteen patients with American Society of Anesthesiologists status (ASA) II-III, age ≤ 70 yr, male or female, preoperatively NYHA II-III and EF ≥ 45%, scheduled for mitral valve replacement (MVR) were studied. Complete intravenous general anesthesia was used for induction and anesthesia maintenance. After anesthesia induction we put the TEE probe into the esophagus. The cardiac index was determined at three periods following MVR: T1 30 minutes later following cessation of bypass, T2 60 minutes after cessation of bypass, T3 90 minutes after cessation of bypass. Statistical analysis was made with the Bland and Altman method. Results: Ninety-six measurements were compared. The cardiac index values at the level of prosthesis mitral valve (CIMV) ranged from 1.3 to 5.5 L·min-1·m-2 (mean 2.6 ± 0.9). The Values of cardiac index at aortic valve (CIAA) ranged from 2.7 to8.8 L·min-1·m-2 (mean 4.9 ± 1.7). Bias was -2.3 L·min-1·m-2 and limits of agreement -5.6 to 1.0 L·min-1·m-2. Conclusion: During mitral valve replacement, doubtful correlations were observed between values of cardiac index at the mitral valve and the ascending aorta using TEE. </p

open journal of anesthesiology

Noninvasive Assessment of Cardiac Index with Transesophageal Echocardiography in Patients Undergoing Mitral Valve Replacement: A Comparison between Determinations at the Mitral Valve and the Ascending Aorta