title: Non-invasive measurement of systolic blood pressure on the arm utilising photoplethysmography: development of the methodology.
abstract: 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.
authors.affiliation: Department of Biomedical Engineering, Linköpings universitet, Sweden. clala@imt.liu.se
authors.forename: C
authors.initials: C
authors.lastname: Laurent
authors.forename: B
authors.initials: B
authors.lastname: Jönsson
authors.forename: M
authors.initials: M
authors.lastname: Vegfors
authors.forename: L G
authors.initials: LG
authors.lastname: Lindberg
mesh_terms: D001132:Arm / Q000098:blood supply*; D001795:Blood Pressure Determination / Q000295:instrumentation / Q000379:methods; D003422:Critical Care / Q000379:methods; D004582:Electronics, Medical; D006801:Humans; D008991:Monitoring, Physiologic / Q000379:methods; D017156:Photoplethysmography / Q000295:instrumentation / Q000379:methods*
references.citation: Am Surg. 1998 Feb;64(2):127-31
references.pmid: 9486883
references.citation: Anesth Analg. 1992 Feb;74(2):196-200
references.pmid: 1731537
references.citation: J Pediatr. 1994 Oct;125(4):591-5
references.pmid: 7931880
references.citation: Med Biol Eng Comput. 1996 Jan;34(1):82-3
references.pmid: 8857316
references.citation: Med Prog Technol. 1987;12(1-2):123-43
references.pmid: 3627016
references.citation: Comput Methods Programs Biomed. 1989 Apr;28(4):257-69
references.pmid: 2649304
references.citation: Clin Physiol. 2001 Mar;21(2):155-63
references.pmid: 11318823
references.citation: BMJ. 2001 Mar 3;322(7285):531-6
references.pmid: 11230071
references.citation: J Vasc Surg. 1994 Aug;20(2):267-70
references.pmid: 8040951
references.citation: J Clin Monit Comput. 1999 Dec;15(7-8):461-7
references.pmid: 12578044
references.citation: Anesthesiology. 1989 Jan;70(1):98-108
references.pmid: 2643368
references.citation: Acta Anaesthesiol Scand. 1986 Apr;30(3):227-30
references.pmid: 3739580
references.citation: J Biomed Opt. 2000 Oct;5(4):391-405
references.pmid: 11092427
references.citation: Med Biol Eng Comput. 1992 Sep;30(5):533-7
references.pmid: 1293445
references.citation: Blood Press Monit. 2003 Feb;8(1):27-30
references.pmid: 12604933