Respiratory Variations of the Diameter of Superior Vena Cava for Predicting Fluid Responsiveness After Cardiac Surgery

Centre Hospitalier Universitaire de Saint Etienne

Status: Completed

Conditions: Vena Cava Superior; Transesophageal Echocardiography

Treatments: Other: Trendelenburg test; Other: Trans oesophageal echocardiography

Study type: Observational

Funder types: Other

Identifiers

NCT03393897

IRBN662017

Details and patient eligibility

About

In a recent study (Vignon 2017), respiratory variations of the diameter of superior vena cava had a greater diagnostic accuracy than pulse pressure variations and inferior vena cava respiratory variations in 540 medical and surgical ICU patients. But this indicator has not been investigated yet in cardiac surgery. The investigator aim to study respiratory variations of superior vena cava for predicting fluid responsiveness after cardiac surgery.

In post-operative cardiac surgery patients with hemodynamic failure, the investigator will measure respiratory vena caval variations with TEE (Trans oesophageal echocardiography). Then, the investigator will evaluate fluid responsiveness after a fluid challenge (Trendelenburg).

A ROC curve will be constructed in order to assess the optimal sensitivity and specificity of this parameter.

Enrollment: 56 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Hemodynamic instability with hypotension,
• Low cardiac output or norepinephrine requirements in the first 6 post-operative hours.

Exclusion criteria

• TEE (Trans oesophageal echocardiography) contra-indication
• Trendelenburg contra-indication

Trial design

56 participants in 1 patient group

Hemodynamic instability with hypotension

Treatment:

Other: Trans oesophageal echocardiography

Other: Trendelenburg test