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A&D TM-2421

Device Model:TM-2421
Manufacturer:Sole: A&D Company Ltd., 3-23-14 Higashi-Ikebukuro, Toshima-Ku, 170-0013 Tokyo, JAPAN.
Measuring functions:Blood pressure
Primary Client Use:Intended for ambulatory blood pressure monitoring
Measurement Site:Upper Arm
Measurement Occurrence:Intermittent measurements at specified intervals or times
Description: The A&D TM-2421 is a clinically validated automatic blood pressure monitor. Measurements are taken from the upper arm and it is intended for ambulatory blood pressure monitoring. This device is now obsolete.

The technology used in the A&D TM-2421, to measure blood pressure, has been assessed, in general and specific populations, according to non-standard protocols.

Accuracy AssessmentRecommendationBasis
MedavalNoneWhen an evaluation is carried out using a non-standard protocol, no inference can be made on accuracy based on a standard protocol.

Validation Publications

Imai Y, Sasaki S, Minami N, Munakata M, Hashimoto J, Sakuma H, Sakuma M, Watanabe N, Imai K, Sekino H, et al. The accuracy and performance of the A&D TM 2421, a new ambulatory blood pressure monitoring device based on the cuff-oscillometric method and the Korotkoff sound technique. Am J Hypertens. 1992 Oct;5(10):719-26. PMID: 1418835.

Ad Hoc protocol General population

O'Sullivan JJ, Derrick G, Griggs PE, Wren C. Validation of the Takeda 2421 ambulatory blood pressure monitor in children. J Med Eng Technol. 1998 May-Jun;22(3):101-5. PMID: 9667035.

BHS:1993 In auscultatory mode (Note: Various positions and agegroups used; Mixed results)

BHS:1993 In oscillometric mode (Note: Various positions and agegroups used; Mixed results)

Keavney B, Bird R, Caiazza A, Casadei B, Conway J. Measurement of blood pressure using the auscultatory and oscillometric methods in the same cuff deflation: validation and field trial of the A&D TM2421 monitor. J Hum Hypertens. 2000 Sep;14(9):573-9. PMID: 10980589.

Ad Hoc protocol General population