Comparison of simultaneous estimation of cardiac output by four techniques in patients undergoing off-pump coronary artery bypass surgery--a prospective observational study
| Autor: | Vivek Jawali, K Jayaprakash, TA Patil, Dattatreya Prabhakumar, Murali Chakravarthy, Praveen Kalligudd |
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| Rok vydání: | 2007 |
| Předmět: |
Male
medicine.medical_specialty Cardiac output Right femoral artery Bypass grafting medicine.medical_treatment Thermodilution Coronary Artery Bypass Off-Pump Bolus (medicine) Internal medicine Monitoring Intraoperative Medicine Humans In patient Prospective Studies Cardiac Output Pulse Off-pump coronary artery bypass business.industry Pulmonary artery catheter Reproducibility of Results General Medicine Surgery Anesthesiology and Pain Medicine medicine.anatomical_structure Anesthesia Catheterization Swan-Ganz Heart Function Tests Cardiology Female Cardiology and Cardiovascular Medicine business Artery |
| Zdroj: | Annals of cardiac anaesthesia. 10(2) |
| ISSN: | 0971-9784 |
| Popis: | We prospectively compared four techniques of cardiac output measurement: bolus thermodilution cardiac output (TDCO), continuous cardiac output (CCO), pulse contour cardiac output (PiCCO™), and Flowtrac™ (FCCO), simultaneously in fifteen patients undergoing off-pump coronary artery bypass grafting (OPCAB). All the patients received pulmonary artery catheter (capable of measuring both bolus thermodilution cardiac output and CCO), PiCCO™ arterial cannula in the left and FCCO in the right femoral artery. Cardiac indices (CI) were obtained every fifteen minutes by using all the four techniques. TDCO was treated as 'control' and the rest were treated as 'test' values. Interchangeability of techniques with TDCO was assessed by Bland and Altman plotting and mountain plot. Four hundred and thirty eight sets of data were obtained from fifteen patients. The values of cardiac output varied between 1 to 6.9 L/min. We found that the values of all the techniques were interchangeable. At certain times, the values of CI measured by both PiCCO and FCCO appeared erratic. The values of CI measured simultaneously appeared in the following descending order of accuracy; TDCO>CCO>FCCO>PiCCO ( the % times TDCO correlated with CCO, FCCO, PiCCO was 93, 86 and 80 respectively). The bias and precision (in L/ min) for CCO were 0.03, 0.06, PiCCO 0.13, 0.1 and flowtrac™ 0.15, 0.04 respectively suggesting interchangeability. We conclude that the cardiac output measured by CCO technique and the pulse contour as measured by PiCCO and FCCO were interchangeable with TDCO more than 80% of the times. |
| Databáze: | OpenAIRE |
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