Comparison of Transesophageal Echocardiography and Transthoracic Echocardiography in Preoperative and Postoperative Diagnosis of Paediatrics Total Correction of Tetralogy of Fallot / 中国医学影像学杂志

ABSTRACT

Purpose To evaluate clinical value oftransesophageal echocardiography (TEE) on total correction of tetralogy of Fallot (TOF) through preoperative and postoperative monitoring of TEE in paediatrics total correction of TOF and comparison with preoperative and postoperative transthoracic echocardiography (TTE).Materials and Methods Thirty-two children patients receiving total correction of TOF were retrospectively analyzed.TEE was adopted to measure atrial and ventricular cavity size,diameter of right ventricular outflow tract,residual shunt surrounding ventricular septum,diameter of pulmonary artery trunk,orifices flow rate and differential pressure of pulmonary artery and differential pressure of right ventricular outflow tract for all patients preoperative and intraoperative.Meanwhile,all these were compared with value measured by TTE before and after the surgery.Results Among the 32 TOF patients,preoperative TEE figured out one revised diagnosis (3％) of TTE and one supplementary diagnosis (3％).Coincidence rate of disease diagnosis of preoperative TEE and surgical outcome of the 32 patients was 100％ (32/32).Intraoperative TEE examination found out 7 (21.9％) with residual surgical issues.Differential pressure of right ventricular outflow tract measured by preoperative and intraoperative TEE and value measured by preoperative and postoperative TTE was of statistical significance (P＜0.05).Right ventricular outflow tract measured by intraoperative TEE was obviously reduced by approximately 28％ compared with the value measured by postoperative TTE.Correlation of atrial and ventricular cavity size,diameter of right ventricular outflow tract and orifices flow rate of pulmonary artery measured by intraoperative TEE and value measured by postoperative TTE were well (r=0.75-0.87,P＜0.05).Differential pressure of right ventricular outflow rate measured by intraoperative TEE was positively correlated with value measured by postoperative TTE (r=0.518,P＜0.05).Difference of atrial and ventricular cavity size,diameter of right ventricular outflow tract orifices flow rate and differential pressure of pulmonary artery and differential pressure of right ventricular outflow rate measured by intraoperative TEE and consistency scattergram of value measured by postoperative TTE was of no statistical significance (P＞0.05).Conclusion Application of TEE for total correction of TOF monitoring is of important practical value in correction and supplement of preoperative diagnosis and immediate postoperative surgical efficacy assessment.