[Neurologic vigor of term newborns according to the type of delivery and obstetric maneuvers].
OBJECTIVE
to evaluate the effect of delivery type and usual obstetric procedures on the neurologic condition of a sample of consecutive term and healthy neonates, in the first 48 hours of life, using the Neurologic Adaptative Capacity Score (NACS) system.


METHODS
cohort prospective study with 313 neonates, from a neonatology unit: Unidade de Neonatologia e Alojamento Conjunto. The variables analyzed were obstetric variables; clinical outcome: low neurologic vigor phase, evaluated by NACS, at 4, 24 and 48 hours of life. The data have been assessed twice: once with the whole sample and the other comparing the Vigorous Group, whose neonates kept a score of 35 or more during the three evaluations, and the Low Vigor Group, with less than 35 scores during the three consecutive evaluations. Bivariate and multivariate analyses have been done. Possible associations between low neurologic vigor phase and the type of delivery, as well between the low neurologic vigor phase and obstetric variables have been searched.


RESULTS
in the bivariate analysis, the delivery type and the obstetric variables were not associated with the low neurologic vigor phase. Nevertheless, the association between the amniotic fluid and the low neurologic vigor phase reached values very close to significance and, then, it was included in the multivariate analysis. In the multivariate analysis, the only variable associated with low neurologic vigor was the presence of meconium stained amniotic fluid, which has shown to be 8.1 times more risky for the neurologic scoring, when Vigorous Group and Low Vigor Group were compared. In the analysis of the whole sample, the same risk was 1.7.


CONCLUSIONS
neither the delivery type, nor the usual obstetric procedures were associated with low neurologic vigor phase. This is useful information, clinically or legally speaking, mainly for obstetricians. According to this sample data, when the term neonate is healthy, the delivery type and the usual obstetric procedures have no impact in the neurologic condition.
Riesgo
Rudimar dos Santos
Rdos S
Setor de Neuropediatria, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil. rriesgo@hcpa.ufrgs.br
Ohlweiler
Lygia
L
Winckler
Maria Isabel Bragatti
MI
Ranzan
Josiane
J
Riesgo
Itamar Dos Santos
Idos S
Rotta
Newra Tellechea
NT
D036861:Delivery, Obstetric / Q000379:methods*; D006801:Humans; D007231:Infant, Newborn; D009424:Nervous System Physiological Phenomena; D011446:Prospective Studies