Determining Heart Activity Present in the Pressure Sensors of a Dialysis Machine

Mattias Holmer, Egle Grigonyte, Kristian Solem, Bo Olde, Frida Sandberg, Leif Sörnmo

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

Determination of heart status during dialysis can im- prove patient monitoring. Pressure sensors in the dialysis machine measures the heart pulses that propagates in the body and enter the extracorporeal blood circuit. A peri- staltic blood pump, located in the same circuit, introduces strong periodic pressure pulses that interfere with the much weaker cardiac component. These signal characteristics make the extraction of the heart activity challenging. In the present study, we explore the possibility to extract and analyze the cardiac component using simulated data. The accuracy of the timing of each heartbeat is analyzed. Ad- ditionally, the heart component is extracted from patient pressure recordings, and compared to the heart rate com- puted from a photoplethysmogram. The results show that heart timings can be accurately determined using the pres- sure sensors of a dialysis machine.
Original languageEnglish
Title of host publicationComputing in Cardiology
EditorsAlan Murray
Pages217-220
Publication statusPublished - 2013
EventComputing in Cardiology 2013 - Zaragoza, Spain
Duration: 2013 Sept 222013 Sept 25

Publication series

Name
ISSN (Print)2325-8861

Conference

ConferenceComputing in Cardiology 2013
Country/TerritorySpain
CityZaragoza
Period2013/09/222013/09/25

Subject classification (UKÄ)

  • Medical Engineering

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