Agreement of minimally invasive pulse wave analysis with pulmonary artery and transpulmonary thermodilution cardiac output measurements in perioperative and intensive care medicine: a systematic review and meta-analysis

The authors aimed to assess the agreement between minimally invasive pulse wave analysis-derived cardiac output measurements and reference measurements from pulmonary artery and transpulmonary thermodilution in high-risk surgical and critically ill patients. Their systematic review and meta-analysis of 92 studies revealed that the pooled percentage errors for cardiac output and cardiac index measurements were 44.0% and 49.1%, respectively, both exceeding the clinically acceptable threshold of 30%. The results indicated significant variability in measurement accuracy based on patient population and device used.