title: Evaluation of non-invasive blood pressure measurement by the Finapres method at rest and during dynamic exercise in subjects with cardiovascular insufficiency.
abstract: The accuracy and precision of the Finapres in recording rest and exercise blood pressure compared with the intra-arterial (aortic and branchial) and random-zero sphygmomanometer methods was assessed in 84 ischaemic patients in three different studies. Firstly, comparison at rest with the aortic intra-arterial pressure in 50 ischaemic patients demonstrated that the Finapres systolic (136.5 +/- 21.1 vs. 129.3 +/- 19.0 mmHg; p < 0.001) and mean (92.4 +/- 13.4 vs. 90.7 +/- 11.4 mmHg; p < 0.001) arterial pressures were higher and diastolic pressures lower (70.4 +/- 11.5 vs. 71.5 +/- 9.8 mmHg; p < 0.001). The reproducibility of the Finapres and invasive method was similar for systolic (4.6% vs. 4.0%), diastolic (2.8% vs. 2.7%) and mean (3.3% vs. 3.0%) blood pressures. Second, in seven subjects studied twice at rest and during 4 min supine bicycle exercise, the exercise increase in blood pressure was greater on the Finapres compared with the brachial intra-arterial pressure (systolic +10.2 +/- 6.3 vs. +3.6 +/- 9.8 mmHg; diastolic +9.6 +/- 11.1 vs. +0.2 +/- 2.1 mmHg; p = 0.02 for each); however, at steady-state the peak/trough differences in pressure between the methods were similar. Thirdly, compared under rest conditions, to random zero sphygmomanometer (RZO), the Finapres systolic pressure was higher (6.8 +/- 3.5 mmHg) and diastolic pressure lower (-6.0 +/- 1.9 mmHg). During upright bicycle exercise, the difference between the Finapres and RZO in systolic blood pressure increased at each level of exercise (+14.3 +/- 4.2, +17.9 +/- 4.0 and +22.2 +/- 4.1 mmHg respectively at each exercise stage: p < 0.01).(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Department of Cardiology, Belfast City Hospital, Queen's University of Belfast, UK.
authors.forename: B
authors.initials: B
authors.lastname: Silke
authors.forename: J P
authors.initials: JP
authors.lastname: Spiers
authors.forename: S
authors.initials: S
authors.lastname: Boyd
authors.forename: E
authors.initials: E
authors.lastname: Graham
authors.forename: G
authors.initials: G
authors.lastname: McParland
authors.forename: M E
authors.initials: ME
authors.lastname: Scott
mesh_terms: D000328:Adult; D000368:Aged; D000787:Angina Pectoris / Q000503:physiopathology*; D001795:Blood Pressure Determination / Q000379:methods*; D015924:Blood Pressure Monitors; D003971:Diastole; D005069:Evaluation Studies as Topic; D005080:Exercise Test; D006801:Humans; D008297:Male; D008875:Middle Aged; D005082:Physical Exertion; D012146:Rest; D013599:Systole