Evidence-based approach for the best level of transducer when continuous invasive arterial blood pressure monitoring

Abstract

Objective To find the best level of transducer when continuous invasive arterial blood pressure monitoring using evidence-based approach. Methods Searched in three databases (Cochrane, PubMed,sinoMED), meanwhile the website of related academic societies,supplemented with Citation Index. Results There were 11 articles after selected. The majority of evidences (9 articles) suggested leveling with the heart, one suggested leveling with the catheter tip,and the other one regarded the matter as nothing important. Conclusions Transducer should be leveled to align the heart rather than the tip of arterial catheter when continuous invasive arterial blood pressure monitoring, but it doesn't matter which surface landmark of the heart. It was suggested that changing the level of transducer when changing the patient position or head of bed. Key words: Arterial pressure; Transducers