Blood pressure monitoring · 2015
Characteristics of self-measured home blood pressure in a Nigerian urban community: the NIPREGH study.
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Odili Augustine N, Abdullahi Bolaji, Nwankwo Adaku M, Asayama Kei, Staessen Jan A
Аннотация
OBJECTIVE: We investigated the characteristics of self-measured home blood pressure (HBP) in a randomly selected population of Nigerians living in Abuja, Nigeria.
METHODS: HBP was the average of 28 measurements comprising duplicate morning and evening readings obtained over a 7-day period by the participants using a semiautomated oscillometric device. Blood pressure measured five consecutive times by trained observers using mercury sphygmomanometer was averaged as the office blood pressure (OBP).
RESULTS: Among the 337 participants included in the analysis, 46.6% were women and their mean age (SD) 40.3 (11.3). The mean, mean+2 SD and 95th percentile of HBP and OBP were 117/76, 147/96 and 145/93 mmHg and 114/73, 147/97 and 142/73 mmHg, respectively. The corresponding values in normotensive individuals were 113/73, 137/89 and 132/88 mmHg and 108/70, 130/88 and 128/84 mmHg. Morning HBPs were significantly higher than that of the evening, with a mean difference (confidence interval) of 1.8 mmHg (1.1-2.5 mmHg) and 1.9 mmHg (1.4-2.3 mmHg) for systolic and diastolic pressures, respectively (P<0.0001). There is a strong correlation between the office and home systolic (r=0.8, P<0.0001) and diastolic (r=0.7, P<0.0001) pressures. Overall, the HBP values were significantly higher than OBP, with a mean difference (confidence interval) of systolic/diastolic of 3.6 mmHg (2.5-4.6 mmHg)/2.3 mmHg (1.4-3.1 mmHg) (P<0.0001). The HBP/OBP difference was maintained in men and normotensive individuals, but in women and hypertensive participants, there was no significant difference between HBP and OBP.
CONCLUSION: Our findings have shown that self-measured blood pressure is feasible and can be used to evaluate blood pressure outside the clinic environment among Nigerians.
METHODS: HBP was the average of 28 measurements comprising duplicate morning and evening readings obtained over a 7-day period by the participants using a semiautomated oscillometric device. Blood pressure measured five consecutive times by trained observers using mercury sphygmomanometer was averaged as the office blood pressure (OBP).
RESULTS: Among the 337 participants included in the analysis, 46.6% were women and their mean age (SD) 40.3 (11.3). The mean, mean+2 SD and 95th percentile of HBP and OBP were 117/76, 147/96 and 145/93 mmHg and 114/73, 147/97 and 142/73 mmHg, respectively. The corresponding values in normotensive individuals were 113/73, 137/89 and 132/88 mmHg and 108/70, 130/88 and 128/84 mmHg. Morning HBPs were significantly higher than that of the evening, with a mean difference (confidence interval) of 1.8 mmHg (1.1-2.5 mmHg) and 1.9 mmHg (1.4-2.3 mmHg) for systolic and diastolic pressures, respectively (P<0.0001). There is a strong correlation between the office and home systolic (r=0.8, P<0.0001) and diastolic (r=0.7, P<0.0001) pressures. Overall, the HBP values were significantly higher than OBP, with a mean difference (confidence interval) of systolic/diastolic of 3.6 mmHg (2.5-4.6 mmHg)/2.3 mmHg (1.4-3.1 mmHg) (P<0.0001). The HBP/OBP difference was maintained in men and normotensive individuals, but in women and hypertensive participants, there was no significant difference between HBP and OBP.
CONCLUSION: Our findings have shown that self-measured blood pressure is feasible and can be used to evaluate blood pressure outside the clinic environment among Nigerians.