Inter-Observer Variability in Blood Pressure Recording

Chowta, K N and *, Haseena and Chowta, Mukta N (2007) Inter-Observer Variability in Blood Pressure Recording. Indian Journal for the Practising Doctor , 3 (6). pp. 27-31.

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Abstract

Objective: The present study was undertaken to evaluate the variability in blood pressure recording by different observer on the same patient. Methodology: Two hundred patients of either sex, aged over 18 years, normotensives or hypertensives, attending the Outpatient Department of the KMC hospital, Attavar, were selected for the study. The blood pressure was recorded in the right arm in sitting position as per the WHO criteria. The recordings were taken by 5 observers at 5 minutes interval using the same instrument. The readings obtained by different observers were compared for the variability in reading and its statistical significance. Results: Out of the 200 randomly selected patients 170 were male and 30 were females. Systolic blood pressure showed statistically significant variability among observers (p<0.001). Diastolic blood pressure also showed variability, but it was statistically not significant (p=0.5405). In the present study 30 were known hypertensives and 170 were normotensives. There was no significant increase in variability among hypertensives. Conclusion: There is significant variation in the patient’s blood pressure values obtained by different observers. Our study emphasizes the need for repeated blood pressure measurements before labeling an individual as hypertensive.

Item Type: Article
Uncontrolled Keywords: Blood pressure, hypertension, variability
Subjects: Medicine > KMC Mangalore > Pharmacology
Medicine > KMC Mangalore > Medicine
Depositing User: KMCMLR User
Date Deposited: 19 Sep 2011 06:10
Last Modified: 24 Oct 2011 10:07
URI: http://eprints.manipal.edu/id/eprint/1329

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