November 1, 1991American Journal of Hypertension
A Multicenter Evaluation of the A&D TM-2420 Ambulatory Blood Pressure Recorde
Why the study?
Does the A&D TM-2420 ambulatory blood pressure recorder provide accurate blood pressure measurements compared to clinician-measured mercury column determinations in human subjects?
Population
151 subjects
Comparison
A&D TM-2420 ambulatory blood pressure recorder vs Two skilled clinicians per site using a teaching…
Design
Cross-sectional
Follow-up
24 hours
Authors
Discussion
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Member takes
Implication
Supports TM-2420 for ABPM validation; leaves open prospective outcome studies before routine adoption.
Key Points
- Assess the accuracy and performance of the A&D TM-2420 blood pressure recorder compared to manual measurements.
- Conducted a multicenter evaluation with 906 simultaneous BP measurements in 151 subjects.
- Compared measurements from the TM-2420 against skilled clinicians using a teaching stethoscope.
- Analyzed observer agreement and effects of age, arm circumference, heart rate, posture, and BP level on device performance.
- 86 to 91% agreement for systolic BP within 10 mm Hg between the TM-2420 and manual readings.
- 91 to 94% agreement for diastolic BP within the same range.
- Error code rate of 3.4% during 24-hour monitoring across two centers.
Structured PICO
Does the A&D TM-2420 ambulatory blood pressure recorder provide accurate blood pressure measurements compared to clinician-measured mercury column determinations in human subjects?
P
Population
151 subjects
I
Intervention
A&D TM-2420 ambulatory blood pressure recorder
C
Comparator
Two skilled clinicians per site using a teaching stethoscope (mercury column determinations)
O
Outcome
Accuracy and clinical performance (agreement between device and mercury column determinations)surrogate
The A&D TM-2420 ambulatory blood pressure recorder demonstrates acceptable accuracy and performance for clinical practice and research.
Cite This Study
White et al. (1991) studied this question.