Key result
Resting pulse rate was positively correlated with blood pressure and had an area under the curve of 0.728 for defining hypertension at an optimal threshold of ≥79 bpm.
Why the study?
High resting pulse rate is associated with adverse cardiovascular events and could serve as a marker of cardiovascular health, prompting evaluation of its correlation with blood pressure and accuracy in defining high blood pressure among adolescents.
Does resting pulse rate accurately identify high blood pressure in adolescents?
Cross-Sectional (n=616)
Does resting pulse rate accurately identify high blood pressure in adolescents?
Resting pulse rate is positively correlated with blood pressure in adolescents and shows moderate accuracy in identifying hypertension, suggesting it could serve as a simple screening tool in resource-limited settings.
Answers are grounded in this paper and cite their sources.
May support hypertension assessment in adolescents; leaves open prospective validation before screening use.
High resting pulse rate (RPR) is associated with adverse cardiovascular events, and could be used as a marker of cardiovascular health. We determined the correlation between RPR and blood pressure (BP); and its accuracy in defining high blood pressure among adolescents attending secondary schools in Mbarara municipality, south-western Uganda. We conducted a cross-sectional study among secondary school adolescents aged 12-19 years in Mbarara municipality, Uganda. We captured demographic characteristics using a structured questionnaire; and measured anthropometric indices and BP. We performed a linear regression analysis to determine the relationship between RPR and blood pressure and plotted receiver operating characteristics curves (ROC) to assess the accuracy of RPR in defining high BP. We enrolled 616 adolescents with a mean age of 15.6±2.0 years and 65.6% (404/616) were female. The RPR was significantly correlated with diastolic blood pressure (DBP) in both boys (Beta = 0.22 [95%CI: 0.10; 0.36]), p<0.001 and girls (Beta = 0.51 [95%CI: 0.43; 0.60]), p<0.001. RPR was significantly correlated with systolic blood pressure (SBP) only in the girls (Beta = 0.23 [95%CI: 0.15; 0.30]), p<0.001. The optimal threshold for RPR in defining prehypertension was RPR≥76bpm with an area under the curve (AUC) of 0.653[95%CI: 0.583-0.722], the sensitivity of 0.737 and specificity of 0.577. In defining hypertension, the optimal threshold was RPR ≥ 79bpm at a sensitivity of 0.737 and specificity of 0.719, with an AUC of 0.728[95%CI: 0.624-0.831]. Resting pulse rate was positively correlated with BP and was more accurate in defining hypertension compared to prehypertension in the study.
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Katamba et al. (2020) conducted a cross-sectional in High blood pressure (n=616). Resting pulse rate was evaluated on Accuracy of resting pulse rate in defining hypertension (AUC 0.728, 95% CI 0.624-0.831). Resting pulse rate was positively correlated with blood pressure and had an area under the curve of 0.728 for defining hypertension at an optimal threshold of ≥79 bpm.
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