Laboratory Outcome Predictors in Coronary Surgery
Evaluate less employed markers of tissue hypoperfusion as venoarterial carbon dioxide partial pressure difference (ΔPCO2) and estimated respiratory quotient (eRQ) combined to other classically studied markers as predictive factors of complicated clinical course after cardiac surgery in patients with left ventricular dysfunction.
Left Ventricular Dysfunction
Coronary Artery Bypass Surgery
|Study Design:||Observational Model: Cohort
Time Perspective: Prospective
|Official Title:||Markers of Tissue Perfusion as Predictors of Complicated Evolution in Patients With Left Ventricular Dysfunction Submitted to Coronary Artery Bypass Surgery|
- Complicated clinical course after coronary artery bypass surgery [ Time Frame: within the first 30 days after surgery ] [ Designated as safety issue: No ]Complicated clinical course defined as death within the first 30 days after surgery or ICU stay more than 4 days.
|Study Start Date:||January 2006|
|Study Completion Date:||March 2008|
|Primary Completion Date:||January 2008 (Final data collection date for primary outcome measure)|
complicated course group (death within 30 days after surgery or ICU stay > 4 days) and uncomplicated course group (ICU stay ≤ 4 days).
Patients with left ventricular dysfunction are more susceptible to tissue hypoperfusion and presents more frequently both low cardiac output syndrome and systemic inflammatory response, what results in prolonged stay in intensive care unit (ICU), and higher mortality rates when compared to patients with normal ventricular function.
The early prediction of prolonged ICU stay through the detection of tissue hypoperfusion may improve the management of care and decrease morbidity of this particular group of patients. However, classic markers of tissue hypoxia as central venous saturation, base excess, lactate may not be predictors of outcome in cardiac surgery patients with left ventricular dysfunction.
The question addressed in this study is if less employed markers of tissue hypoperfusion as as venoarterial carbon dioxide partial pressure difference (ΔPCO2) and estimated respiratory quotient (eRQ) have predictive value of prolonged ICU stay in patients with left ventricular dysfunction submitted to coronary artery bypass surgery.
|Heart Institute, Hospital of Clinics, São Paulo University Medical School|
|São Paulo, Brazil, 05403-000|
|Principal Investigator:||Thiana Yamaguti, PhD||Heart Institute, Hospital of Clinics, São Paulo University Medical School|
|Study Chair:||José Otávio C. Auler Júnior, PhD/Chairman||Heart Institute, Hospital of Clinics, São Paulo University Medical School|
|Study Director:||Marilde A. Piccioni, PhD||Heart Institute, Hospital of Clinics, São Paulo University Medical School|