Pulse Pressure Variation (PPV) to Predict Fluid Responsiveness During Cardiac Displacement in Patients Undergoing Off-pump Coronary Artery Bypass Surgery (OPCAB)

Not Applicable

Completed

• Conditions: Ischemic Heart Disease
• Interventions: Procedure: fluid loading

• Registration Number: NCT01041742
• Lead Sponsor: Seoul National University Hospital

Brief Summary

Pulse pressure variation (PPV) known as a dynamic preload index is increasingly being used for guide of fluid management under various clinical situations. We hypothesized that PPV could play a role as a predictor of fluid responsiveness during displacement of the heart in patients undergoing off-pump coronary artery bypass surgery (OPCAB).

Detailed Description

The aim of this study was to investigate the ability of PPV to predict fluid responsiveness during displacement of the heart in patients undergoing off-pump coronary artery bypass surgery. After anesthesia, we will measure mean arterial pressure, heart rate, central venous pressure, mean pulmonary artery pressure, pulmonary arterial occlusion pressure, mixed venous oxygen saturation, PPV and cardiac index in patients receiving elective OPCAB. All parameters will be recorded at 5 minutes after the left anterior descending artery anastomosis, immediately after the displacement of the heart for the left circumflex artery anastomosis, and 10 minutes after fluid loading with hydroxyethyl starch 6%(10 mL/kg). Patients whose cardiac index increased by \>15% to fluid loading will be defined as responders. To test the abilities of central venous pressure, pulmonary artery occlusion pressure and PPV to predict fluid responsiveness during heart displacement, areas under the receiver operating characteristics curves of the responders will be calculated and compared.

Study Timeline

• Study Start: 2009-12
• Primary Completion: 2009-12
• Study First Submitted: 2009-12-30
• Study First Submitted QC: 2009-12-31
• Study Completion: 2010-01
• Study First Posted: 2010-01-01
• Status Verified: 2010-07
• Last Update Submitted: 2010-07-25
• Last Update Posted: 2010-07-27

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 35

Inclusion Criteria

• patients undergoing elective off-pump coronary artery bypass surgery

Exclusion Criteria

• unstable angina, preoperative arrhythmia, reduced ventricular function (ejection fraction < 40%), more than mild degree valvular heart disease, preoperative use of vasopressors or mechanical assist devices, intra-cardiac shunt, pulmonary artery hypertension, severe peripheral vascular obstructive disease, or esophageal pathology precluding the use of transesophageal echocardiography (TEE)

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
OPCAB	fluid loading	-

Primary Outcome Measures

Name	Time	Method
pulse pressure variation	during displacement of the heart in OPCAB

Trial Locations

Locations (1)

Seoul National University Hospital; 🇰🇷 Seoul, Korea, Republic of