Agreement between cardiac index measured by transesophageal echocardiography through mitral valve and ascending aotra in patients undergoing mitral valve replacement
10.3760/cma.j.issn.0254-1416.2012.11.026
- VernacularTitle:食道超声心动图经二尖瓣和升主动脉测定二尖瓣置换术患者心脏指数的一致性
- Author:
Xiaoju HU
;
Hongwei SHI
;
Jinyan YAN
;
Yali GE
;
Haiyan WEI
- Publication Type:Journal Article
- Keywords:
Echocardiography,transesophageal;
Mitral valve;
Aorta,thoracic;
Cardiac output
- From:
Chinese Journal of Anesthesiology
2012;(11):1376-1378
- CountryChina
- Language:Chinese
-
Abstract:
Objective To determine if the cardiac index (CI) measured by transesophageal echocardiography (TEE) through the mitral valve (MV) agrees with that measured by transesophageal echocardiography through the ascending aorta (AA).Methods Sixteen ASA Ⅱ or Ⅲ patients (NYHA Ⅱ or Ⅲ),aged 18-70 kg,weighing 46-72 kg,undergoing mitral valve replacement under cardiopulmonary bypass (CPB),were studied.Total intravenous anesthesia was used for induction and maintenance of anesthesia.After tracheal intubation,the TEE probe was placed in the esophagus.CI was measured by transesophageal echocardiography through the MV (CIMV)and AA (CIAA) at 15,30 and 60 min after termination of CPB and recorded.All the data were compared by Bland-Altman analysis.Results CIMV values were significantly lower at each time point than CIAA values (P ＜0.01).The results of Bland-Altman comparison:CIMV 1.29-5.52 L· min-1 · m-2,mean was (2.6 ± 0.9)L·min-1·m-2,and CIAA 2.7-8.8 L·min-1·m-2,mean was (4.9± 1.7) L·min-1 ·m-2,bias was-2.3 L·min-1 ·m-2,and limit of agreement was-5.62-1.03 L· min-1 · m-2 resulting in r =-0.577,P ＜ 0.01.Conclusion CI values obtained through the MV agrees well with that measured through the AA using TEE in patients undergoing mitral valve replacement,but CIAA values are significantly higher than CIMV values,there is a large difference between them for clinical use,and both methods for CI measurement cannot replace each other.
