Pulse Pressure Variation (PPV) to Predict Fluid Responsiveness During Cardiac Displacement in Patients Undergoing Off-pump Coronary Artery Bypass Surgery (OPCAB)
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).
|Study Design:||Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Prevention
|Official Title:||Pulse Pressure Variation to Predict Fluid Responsiveness During Cardiac Displacement in Patients Undergoing Off-pump Coronary Artery Bypass Surgery|
- pulse pressure variation [ Time Frame: during displacement of the heart in OPCAB ] [ Designated as safety issue: No ]
|Study Start Date:||December 2009|
|Study Completion Date:||January 2010|
|Primary Completion Date:||December 2009 (Final data collection date for primary outcome measure)|
Procedure: fluid loading
fluid loading will be performed by using 6% hydroxyethyl starch solution , at 10 mL/kg.
Other Name: HES 130/0.4; Voluven; Fresenius Kabe, Stans, Switzerland
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.
|Korea, Republic of|
|Seoul National University Hospital|
|Seoul, Korea, Republic of|
|Study Director:||Yunseok Jeon, MD||Seoul National University Hospital|