Neurobehavioral assessment predicts motor outcome in preterm infants
Bonnie E Stephens, Jing Liu, Barry Lester, Linda Lagasse, Seetha Shankaran, Henrietta Bada, Charles Bauer, Abhik Das, Rosemary Higgins, Bonnie E Stephens, Jing Liu, Barry Lester, Linda Lagasse, Seetha Shankaran, Henrietta Bada, Charles Bauer, Abhik Das, Rosemary Higgins
Abstract
Objective: To determine whether Neonatal Intensive Care Unit Network Neurobehavior Scales (NNNS) at 44 weeks predict motor outcome at 2 years in preterm infants from the Maternal Lifestyles Study (MLS).
Study design: Data were collected on all preterm infants (<36 weeks) in the MLS who underwent an NNNS at 44 weeks (n = 395) and neurologic examination at 12 to 36 months or Bayley Psychomotor Development Index (PDI) at 24 months (n = 270). Logistic regression analyzed NNNS summary scores associated with cerebral palsy (CP) or PDI <70, while controlling for birth weight </=1250 g.
Results: Eighteen of 395 infants (5%) had CP; 24 of 270 infants (9%) had PDI <70. CP was associated with low quality of movement (odds ratio [OR], 1.95; 95% CI, 1.24-3.06; P = .004) and high lethargy (OR, 1.67; 95% CI, 1.01-2.76; P = .045). The model contributed 19% of the variance in CP diagnosis at 12 to 36 months (R(2) = .19, P < .001). Low PDI was associated with low handling (OR, 1.83; 95% CI, 1.12-2.99; P = .017), low quality of movement (OR, 2.16; 95% CI, 1.38-3.38; P = .001), and hypotonia (OR, 1.63; 95% CI, 1.14-2.32; P = .007). The model contributed 26% of the variance in PDI <70 at 24 months (R(2) = 0.26, P < .001).
Conclusions: The neurobehavioral profile of under-arousal in 44-week-old preterm infants may predict poor motor outcome.
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Source: PubMed