RV longitudinal shortening fraction (RV-SLF) is based on the analysis of the tricuspid annulus displacement (TAD) and can be performed in transthoracic (TTE) or transoesophageal echocardiography (TEE). Having an 2D-STE interchangeable parameter would allow accurate measurement of RV systolic function before, during and after cardiac surgery. However, to date, there are no data on the interchangeability of RV-LSF measurements performed in TTE and TEE.

The aim of the study is to evaluate the interchangeability of TTE and TEE measurements of RV-LSF during cardiopulmonary bypass surgery.

Inclusion Criteria:

• Adult patient (>18 years)
• Patient hospitalized at the Amiens University Hospital for scheduled cardiac surgery under cardiopulmonary bypass.
• Information of the patient and collection of his non-opposition

Exclusion Criteria:

• Patient with a contraindication to the realization of TEE (gastric or mediastinal pathology)
• Patient with poor echogenicity on TEE not allowing evaluation of 2D-STE parameters of the right ventricle
• Patient with a rapid supraventricular rhythm disorder (HR > 100) at the time of TTE and/or TEE.