Arterial blood pressure of term newborns during the first week of life

Abstract

The progressive behavior of the blood pressure of term newborns during the first week of life was assessed by the simultaneous use of oscillometric and Doppler methods. A total of 174 term neonates born at the Municipal Hospital Odilon Behrens in Belo Horizonte, from March 1996 to February 1997, were prospectively assessed. The oscillometric and Doppler ultrasonic methods were simultaneously used for four consecutive recordings obtained at 12 ± 6, 24 ± 6 and 72 ± 24 h and on the 7th ± 1 day of life. The combined use of the two methods simplified the procedure, with automatic cuff inflation and deflation, and speed was properly controlled with an automatic pressure monitor. The procedure was performed using a Y-connection to the mercury sphygmomanometer, with blood pressure being recorded with an automatic device and systolic blood pressure being measured simultaneously by Doppler ultrasound. The newborns were awake, not crying and in the supine position. A statistically significant increase in systolic and diastolic blood pressure was observed between the first and second, and the third and fourth measurements by Doppler and oscillometric methods. No significant correlation between birth weight, length, ponderal index and blood pressure was observed. The technique used represents a simpler and more accurate procedure for blood pressure measurement.

Determinants of early Post-natal Blood Pressure among Term Healthy Babies Seen in A Tertiary Hospital in Southwest Nigeria

“…Though this was a weak relationship, a similar finding was reported by [17]. Contrastingly, Nascimento in Brazil found no relationship between birth length and systolic blood pressure [16].…”

“…Most studies carried out worldwide including Nigeria agreed that neonatal weight is a major determinant of neonatal systolic blood pressure [13]- [15]. The role of other physical factors, especially length has been inconsistently reported [16], [17]. Data about the effects of social factors on early neonatal blood pressure are scarce.…”

Regional tissue oxygenation in association with duration of hypoxaemia and haemodynamic variability in preterm neonates

“…Although the blood pressure (BP) was recorded every 60 s (since the cuff cannot be inflated and deflated every 5 s), the GE DASH 4000 monitor repeats the same BP value for the next 60 s. A highly significant correlation has been observed between the neonatal BP measured simultaneously by the oscillometric and Doppler ultrasonic methods 40. A variation in BP during the 60 s interval required is unlikely; therefore, the parameters recorded every 5 s were matched with BP data.…”

Risk Factors of Mechanical Ventilation in Premature Infants During Hospitalization

“…Previous studies reported that the blood pressure of premature infants is lower than that of term infants at birth; [37][38][39][40] however, blood pressure increased steadily in the first week of life. 41 Therefore, the infants with low blood pressure were younger and had immature physiological functions; hence, the possibility of requiring mechanical ventilation increases.…”