Haemodynamic Changes During Anaesthesia in the Prone Position, Evaluated Using Transoesophageal Ultrasound

• Conditions: Changes i Myocardial Velocities; Obesity; Changes in Bloodflow Across Cardiac Valves; Changes in Diastolic Function; Spinal Surgery; Anaesthesia; Changes in Left and Right Ventricle Dimension; Changes in Dimensions of Inferior Caval Dimension and Hepatic Venous Bloodflow
• Interventions: Other: Change from supine to prone position

• Registration Number: NCT02595788
• Lead Sponsor: Odense University Hospital

Brief Summary

Transoesophageal ultrasound examination before and after prone position.

Detailed Description

Patients undergoing spinal surgery in the prone position are anaesthetized and then an ultrasound probe is placed in the oesophagus and the heart physiology is examined. Following prone position the examination is repeated.

Study Timeline

• Study Start: 2014-03
• Status Verified: 2015-11
• Study First Submitted: 2015-11-02
• Study First Submitted QC: 2015-11-02
• Last Update Submitted: 2015-11-02
• Study First Posted: 2015-11-03
• Last Update Posted: 2015-11-03
• Primary Completion: 2015-12
• Study Completion: 2016-06

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 20

Inclusion Criteria

• adult patients scheduled for spinal surgery in the prone position. Body mass index above 30.

Read More

Exclusion Criteria

• significant cardiomyopathy or valvular disease
• heart rhythm other than normal sinus rhythm
• coagulopathy
• increased risk of oesophageal injury during probe insertion

Read More

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Prone position	Change from supine to prone position	Change from supine to prone position

Primary Outcome Measures

Name	Time	Method
End systolic and diastolic dimension of the left and right ventricle.	The day of surgery	Studied after induction of anaesthesia, before and after the patient is placed in the prone position.

Secondary Outcome Measures

Name	Time	Method
Left and rigth ventricle eccentricity index.	The day of surgery

Trial Locations

Locations (1)

Odense University Hospital; 🇩🇰 Odense, Denmark