Non-invasive measurement of systolic blood pressure on the arm utilising photoplethysmography: development of the methodology

Laurent, Claes,1958-Linköpings universitet,Fysiologisk mätteknik,Tekniska högskolan (författare)

Non-invasive measurement of systolic blood pressure on the arm utilising photoplethysmography : development of the methodology

Photoplethysmography (PPG) can be used to measure systolic blood pressure at the brachial artery. With a specially designed probe, positioned in the most distal position beneath a pressure cuff on the upper arm, this is possible. The distance between the light source (880 nm) and the photodetector was 20 mm. A test was performed on neuro-intensive care patients by determining blood pressure from the PPG curves, and, when it was compared with systolic blood pressure obtained from inserted indwelling arterial catheters, a correlation factor of r=0.95 was achieved. The difference between blood pressure obtained using PPG and invasive blood pressure measurement was 3.9±9.1 mmHg (mean±SD), n=19. The depth to the brachial artery was 13.9±4.1 mm (mean±SD), n=18. A digital PPG system utilising pulsating light was also developed.

Jönsson, Björn,1951-Östergötlands Läns Landsting,Linköpings universitet,Kärlkirurgi,Thorax-kärlkliniken,Hälsouniversitetet(Swepub:liu)bjojo48 (författare)
Vegfors, Magnus,1953-Östergötlands Läns Landsting,Linköpings universitet,Anestesiologi,Anestesi- och intensivvårdskliniken VIN,Hälsouniversitetet(Swepub:liu)magve87 (författare)
Lindberg, Lars-Göran,1951-Linköpings universitet,Fysiologisk mätteknik,Tekniska högskolan(Swepub:liu)larli69 (författare)
Linköpings universitetFysiologisk mätteknik (creator_code:org_t)

Ingår i:Medical and Biological Engineering and Computing43:1, s. 131-1350140-01181741-0444

Av författaren/redakt...: Laurent, Claes, ...; Jönsson, Björn, ...; Vegfors, Magnus, ...; Lindberg, Lars-G ...

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