Laboratory Outcome Predictors in Coronary Surgery

Completed

• Conditions: Left Ventricular Dysfunction; Coronary Artery Bypass Surgery; Tissue Hypoperfusion

• Registration Number: NCT01178866
• Lead Sponsor: University of Sao Paulo

Brief Summary

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.

Detailed Description

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.

Study Timeline

• Study Start: 2006-01
• Status Verified: 2008-01
• Primary Completion: 2008-01
• Study Completion: 2008-03
• Study First Submitted: 2010-08-09
• Study First Submitted QC: 2010-08-09
• Last Update Submitted: 2010-08-09
• Study First Posted: 2010-08-10
• Last Update Posted: 2010-08-10

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 87

Inclusion Criteria

• adults
• left ventricular dysfunction (ejection fraction < 50%)
• patients undergoing coronary artery bypass surgery requiring the use of Cardiopulmonary Bypass (CPB)

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Exclusion Criteria

• renal failure (creatinine clearance lower than 40 ml/min/m2),
• hepatic dysfunction
• endocrinologic disorders
• pulmonary disease
• uncontrolled diabetes mellitus
• a history of fever or infection within the week before surgery
• previous anemia (hemoglobin ≤ 10.0 g/dL)

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Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Complicated clinical course after coronary artery bypass surgery	within the first 30 days after surgery	Complicated clinical course defined as death within the first 30 days after surgery or ICU stay more than 4 days.

Trial Locations

Locations (1)

Heart Institute, Hospital of Clinics, São Paulo University Medical School; 🇧🇷 São Paulo, Brazil