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Oscillometric blood pressure reference values of African full-term neonates in their first days postpartum
1University of Benin Teaching Hospital, University of Benin, Benin City, Nigeria. sadohehi@yahoo.com
Background:
Knowing the normative blood pressure (BP) in a newborn baby is important in order to identify abnormal BP readings. This study was done to determine normative BP values of Nigerian newborns, using the 8100 Dinamap monitor.
Methods:
Consecutive full-term neonates delivered in a tertiary centre in Nigeria were recruited for the study. The babies' systolic (SBP), diastolic (DBP) and mean arterial (MAP) blood pressures were measured within the first four days after birth.
Results:
A total of 473 babies were recruited for the study. The mean SBP, DBP and MAP readings on day 1 were 66.8 +/- 7.7, 38.5 +/- 6.3 and 47.9 +/- 6.3 mmHg, respectively. The day 1 SBP of babies > 4 kg were significantly higher than those who weighed < 2.5 and 2.5-4 kg (p = 0.01, p = 0.05), respectively.
Conclusion:
This study provided current normative SBP, DBP and MAP values for Nigerian neonates. The BP readings compared with their Caucasian counterparts.
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Special considerations while measuring blood pressure
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
Measurement of Blood Pressure
Assessing Blood pressure using a doppler ultrasound
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
Assessment of blood pressure in brachial artery(two-step method)
Assessment of blood pressure in brachial artery(one-step method)
Prepare for the Procedure:
Sites for measuring blood pressure
The Brachial Artery: Primary Site for Blood Pressure Measurement

