Pleth Variability Index in Modified Prone Position or Knee-chest Position (Concord Position)

Asan Medical Center

Status: Completed

Conditions: Modified Prone Position; Fluid Responsiveness

Treatments: Other: volume expansion

Study type: Observational

Funder types: Other

Identifiers

NCT04002193

HePark

Details and patient eligibility

About

To investigate whether PVI predicts the fluid responsiveness in modified prone position undergoing posterior approach cervical operation. Furthermore, modified prone position could influence on dynamic variables including stroke volume variation(SVV), pulse pressure variation(PPV) and PVI.

Full description

Objective :

To compare measurements of pleth variability index (PVI), pulse pressure variation (PPV) and stroke volume variation (SVV) to predict fluid responsiveness in modified prone position or knee-chest position (concord position) for cervical operation.

To identify Influence of the modified prone position (concord position) on these variables.

Method

1. To assess influence of the position change on PVI and other variables(PPV, SVV)
2. To assess PVI to predict fluid responsiveness at modified prone position

Enrollment: 44 patients

Sex: All

Ages: 19 to 79 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• American Society of Anaesthesiologists'(ASA) physical status 1-3
• patients who received cervical operation in modified prone position or knee-chest position

Exclusion criteria

• Valvular heart disease
• Congestive heart failure, reduced left ventricular function ( Ejection fraction < 40%)
• Moderate grade of pulmonary disease
• Arrhythmia (atrial fibrillation, atrial flutter.. etc.)
• body mass index > 30 or < 15 kg/m2