A finger photoplethysmography waveform during the valsalva maneuver detects changes in left heart filling pressure after hemodialysis

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• 作者：Panagis Galiatsatos ; Kapil Parakh ; Jennifer Monti ; Sumeska Thavarajah…
• 关键词：Valsalva ; Left ventricular filling pressure ; Volume status ; Hemodialysis
• 刊名：BMC Nephrology
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：16
• 期：1
• 全文大小：751 KB
• 刊物主题：Nephrology; Internal Medicine;
• 出版者：BioMed Central
• ISSN：1471-2369

文摘

Background A noninvasive system for determining left ventricular (LV) filling pressure may help to improve personalized fluid removal goals in hemodialysis patients. We previously showed that the change in photoplethysmography (PPG) pulse amplitude measured by finger PPG during a Valsalva maneuver correlates with invasively measured left ventricular end-diastolic pressure (LVEDP). This key PPG change, the ratio of finger PPG pulse amplitude at end-Valsalva to baseline, is known as the Pulse Amplitude Ratio, PAR. The objective of this study was to determine how PAR changes after fluid removal in hemodialysis.