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Document Details : Title: Differences in blood pressure readings between supine and sitting positions in hypertensive patients Author(s): L-C. Lu , T-M. Wei , S. Li , X-L. Ye , C-L. Zeng , L-X. Wang Journal: Acta Cardiologica Volume: 63 Issue: 6 Date: 2008 Pages: 707-711 DOI: 10.2143/AC.63.6.2033387 Abstract : Objective — The objective of this study was to investigate the impact of postures on blood pressure (BP) readings in patients with hypertension. Methods and results — BP was measured in 1,487 hypertensive patients in sitting and supine positions. The systolic (SBP) and diastolic (DBP) BP in supine position was 2.9 ± 7.8 mmHg and 0.9 ± 5.4 mmHg higher, respectively, than in the sitting position (P < 0.001). The greatest difference between supine and sitting SBP was found in those aged between 30 and 39 years (3.6 ± 6.8 mmHg), and in those who were older than 80 years (5.3 ± 7.9 mmHg). A greater difference between the supine and sitting DBP was identified in the groups > 60-years of age. Multivariate regression analysis showed that age and sex were independent predictors for the increment of BP in the supine position. Conclusion — There is a significant difference between supine and sitting SBP and DBP, with age and sex being the most important predicting factors. |
