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PubMedDate not supplied

The correlation of sucking behaviors and Bayley Scales of Infant Development at six months of age in VLBW infants.

The purpose of this study was to identify early predictors of developmental outcomes in infants of very low birth weight (< or = 1,500 g). The sample consisted of 19 infants with a mean birth weight of 1,238 g and a mean gestational age at birth of 29.1 weeks. The instruments used were the Kron Nutritive Sucking Apparatus, the Neonatal Morbidity Scale, and the Bayley Scales of Infant Development (BSID). Mean pressure generated by each suck and the length of sucking bursts were positively correlated (p < .05) with the Psychomotor Scale of the BSID. As a predictor of developmental outcomes at 6 months of age, nutritive sucking demonstrated a 78% specificity and an 80% sensitivity, as compared with neonatal morbidity, 58% and 69%, respectively. In a small sample of relatively healthy preterm infants, their ability to suck helped identify those with questionable early development.

Child Development↗
PubMed1992

[Rumen fluid studies in calves with abnormal and normal sucking behavior].

Ruminal fluid and blood samples were analysed in 39 calves with poor suckling behaviour and reduced milk intake (group 1) and in 21 calves with normal suckling behaviour (group 2). The pH level and chloride concentration was determined in the ruminal fluid as well as in the blood. In addition Gram stains and subsequent microscopical examinations of the ruminal fluids were carried out. Blood samples were submitted for blood gas analysis. Notable differences were found between the two groups. The pH level of the ruminal fluid was less than 5.5 in 29 of the 39 calves in group 1 (74.4%); in contrast, the pH was always above 5.5 in group 2. In group 1, 22 calves with a pH of less than 5.5 also revealed a metabolic acidosis of the blood. Mainly gram-positive bacteria were found in the ruminal fluid of 74.4% of the calves in group 1. On the other hand, 76.2% of the calves in group 2 revealed a mainly gram-negative flora. There was no difference in the chloride concentration, either in the blood or in the ruminal fluid and the values showed a high range of scatter.

Animals↗
PubMed1975

Pattern of sucking in the infant rat during spontaneous milk ejection.

Two methods are described for measuring the sucking of rat pups on the nipples of the mother. The first uses pressure recording of the cannulated teatduct; the second uses direct observation of sucking behavior. Using these methods, the sucking behavior of the pups during sequences of milk ejections was investigated. Pressure recordings of the sucking of individual pups on the nipple showed that between milk ejections the pups sucked intermittently in bursts. During milk ejection itself there was a longer period of vigorous and continuous sucking. Behavioral observations on the level of sucking in whole litters of pups showed that the background bursts of sucking from the litter as a whole were randomly distributed in relation to the inferred time of oxytocin release. These results indicate that once the pups are sucking on the nipples, variations in the sucking behavior of the litter have no role in the timing of milk ejections in the mother.

Animals↗
PubMedDate not supplied

Effect of nonnutritive sucking on behavioral state in preterm infants before feeding.

To describe the effect of nonnutritive sucking (NNS) on behavioral state (BSt) in preterm infants before feedings 24 preterm infants were randomly assigned and studied before each of their first 16 bottle feedings. Twelve received NNS by pacifier for 5 minutes; 12 did not receive a pacifier. BSt was measured with a 12-category scale for 30 seconds before the 5-minute period (BSt1) and for 30 seconds after (BSt2). Sleep states decreased for both groups. BSts considered more optimal for feeding increased more during NNS (86 vs. 46). Restless states were three times less frequent after NNS (23 vs. 68). Differences between groups were nonsignificant at BSt1, but were significant at BSt2, p less than .001. In the absence of self-regulatory feeding policies based on early hunger cues, NNS for 5 minutes prefeeding is simple, brief, and suitable for implementation in busy neonatal intensive care units. Nonnutritive sucking was an effective modulator of behavioral state for this sample.

Child Behavior↗