title: Accuracy of the Takeda TM-2420 ambulatory blood pressure monitor.
abstract: 1. The accuracy of blood pressure measurement with the Takeda TM-2420 ambulatory blood pressure monitor and the TM-2020 data recorder have been assessed by comparison with simultaneous measurements taken using auscultation and direct femoral artery measurements. 2. Systolic blood pressure was underestimated by the TM-2420 by a mean of 10 mmHg (s.d. = 6, 95% confidence interval (CI) = -13 to -7) over the range of pressures measured by auscultation. It was underestimated by 23 mmHg (s.d. = 12, 95% CI = -28 to -18) compared with direct femoral artery measurements. 3. Diastolic pressure measurements were similar to those obtained by auscultation. When compared with direct femoral artery recordings, diastolic pressure was overestimated by about 5 mmHg (s.d. = 4, 95% CI = 3.4-6.6), which is consistent with indirect readings, taken with a 'standard' cuff (inflatable bladder 23 cm X 12 cm). 4. The TM-2420/2020 is thus suitable for ambulatory measurements of blood pressure when diastolic pressure is the criterion of interest.
authors.affiliation: Department of Medicine, Flinders Medical Centre, Bedford Park, South Australia.
authors.forename: A E
authors.initials: AE
authors.lastname: Russell
authors.forename: A L
authors.initials: AL
authors.lastname: Tonkin
authors.forename: L M
authors.initials: LM
authors.lastname: Wing
authors.forename: R M
authors.initials: RM
authors.lastname: Hassam
authors.forename: R J
authors.initials: RJ
authors.lastname: McRitchie
authors.forename: P E
authors.initials: PE
authors.lastname: Aylward
authors.forename: R B
authors.initials: RB
authors.lastname: Minson
authors.forename: A J
authors.initials: AJ
authors.lastname: Bune
authors.forename: M J
authors.initials: MJ
authors.lastname: West
authors.forename: J P
authors.initials: JP
authors.lastname: Chalmers
mesh_terms: D000790:Angiocardiography; D001314:Auscultation; D001795:Blood Pressure Determination / Q000295:instrumentation*; D006801:Humans; D008991:Monitoring, Physiologic