Clinical trial NCT05175534: Contributions of Transesophageal Echocardiography in Liver Transplant Surgery
Official title: Contributions of Transesophageal Echocardiography During Episodes of Hemodynamic Instability in Liver Transplant Surgery
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Liver Transplant; Complications
Lead sponsor: Hospital Universitari Vall d'Hebron Research Institute
Sponsor class: OTHER
First posted: 2022-01-03
Enrollment: 32
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: RETROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Patients undergoing liver transplantation

Brief summary: The goal of this study is to describe the safety and impact of transesophageal echocardiography in instability episodes during liver transplantation, especially during reperfusion stage.

After institutional review board approval, this study was performed in Vall d´Hebron University Hospital including patients undergoing liver transplantation Interventions: peroperative transesophageal echocardiography A transesophageal echocardiography scan was performed in case of hemodynamic instability episodes, and immediately after vascular unclamping.

The investigators registered percentatge of patients with diastolic/systolic dysfunction, hypovolemia, vasodilatation, embolism and percentatge of patients with postreperfusion syndrome

Detailed description: A TEE scan was performed in case of hemodynamic instability episodes defined by a decrease of 30% of the mean arterial pressure (MAP) during at least 1 min, and in all patients during immediate graft reperfusion phase and up 30 minutes.

The instability hemodynamic state was classified into four categories: diastolic failure, systolic failure, hypovolemia and vasodilatation.

The diastolic evaluation was performed at ME 4C view using pulsed doppler of the mitral and tricuspid valve at the level of the leaflet tips and tissue Doppler motion of the mitral and tricuspid annulus. The systolic evaluation was performed using tissue Doppler motion of the mitral and tricuspid annulus evaluating S´. Hypovolemia was registered such low filling pressures (mitral lateral E/e´\<10 m/s), cardiac index \< 2.5 l . min-1 . m-2 and close approximation of the papillary muscles in the TG Mid SAX view. Vasodilatation was registered such low filling pressures (mitral E/e´\< 10 m/s) and CI \>2.5 l. min-1 . m-2).

An assessment of cardiac filling volumes and contractility, were obtained at two levels: the mid-esophageal four-chamber view (ME 4C) to evaluate the interaction of left and right ventricles and detect possible venous air embolism; and in the trans-gastric mid short axis view (TG mid SAX), to evaluate left ventricular size for the diagnosis of hypovolemia secondary to hemorrhage or altered venous return due to surgical maneuvers on the liver, and segmental wall motion. If the TG mid SAX view was not possible due to the posterior retraction of the stomach during surgery, the ME 4C view, mid-esophageal two chamber view (ME 2C) and mid-esophageal long axis view (ME LAX) was used for the diagnosis of left ventricle systolic dysfunction, and mid-esophageal bicaval view (ME bicaval) was used for the volemia evaluation.

Eligibility criteria: Inclusion Criteria: patients undergoing liver transplantation

-

Exclusion Criteria:

* None

Primary outcomes:
measure: determine the cardiac alterations observed during reperfusion phase
timeFrame: during liver transplant
Secondary outcomes:
measure: determine the cardiac alterations during episodes of hemodynamic instability
timeFrame: during liver transplant
Other outcomes:
Locations:
city: Barcelona
country: Spain
facility: Susana González Suárez
state: Cataluña
city: Barcelona
country: Spain
facility: Vall d´Hebron Research Institute VHIR
Study officials:
affiliation: Vall d´Hebron University Hospital
name: Susana González-Suárez, MD, PhD
role: PRINCIPAL_INVESTIGATOR
References: