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Screening for PseudohypertensionA Quantitative, Noninvasive Approach
Khin Mae Hla, MD;
John R. Feussner, MD
Arch Intern Med. 1988;148(3):673-676.
Abstract
• We studied 36 hypertensive men, aged 60 years or older, and compared direct intra-arterial diastolic blood pressure (BP) measurements, indirect cuff mercury sphygmomanometer measurements, and automatic infrasonic recorder (IR) measurements. We used a receiver operating characteristic curve to determine whether a difference between the cuff and IR diastolic BP could identify patients likely to have pseudohypertension (cuff—intra-arterial diastolic BP difference of 10 mm Hg or greater). We found that a cuff-IR difference of 4 mm Hg could identify the majority of patients with pseudohypertension (sensitivity, 93%; specificity, 64%; positive predictive value, 62%; negative predictive value, 93%). We concluded that the IR is an accurate, quantitative, noninvasive substitute for intra-arterial measurements and may be the preferred technique for screening and monitoring of blood pressure in elderly hypertensive patients.
(Arch Intern Med 1988;148:673-676)
Author Affiliations
From the Ambulatory Care Service and the Health Services Research Field Program, Durham (NC) Veterans Administration Medical Center; and the Division of General Internal Medicine, Duke University Medical Center, Durham.
Footnotes
Accepted for publication Oct 28, 1987.
Reprint requests to Ambulatory Care Service (11C), Durham Veterans Administration Medical Center, 508 Fulton St, Durham, NC 27705 (Dr Hla).
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