Non-nutritive Sucking In Preterm Infants Research Articles

Quantitative non-nutritive sucking measurement as a predictor of oral feeding readiness in newborns.

The purpose of this study is to examine the relationship between the parameters of a silver nanowire-based flexible pressure sensor developed to measure the non-nutritive sucking (NNS) performance and predict the nutritive sucking status in preterm infants. Preterm infants who were referred for feeding difficulty during the transition period from tubal feeding to oral feeding were enrolled in our study. A flexible pressure sensor was used to measure the non-nutritive sucking parameters of neonates. The evaluator stimulated the infants' lips and tongue with a pacifier integrated with a sucking pressure sensor, to check whether non-nutritive sucking had occurred. When the sucking reflex was induced, it was measured. The infants' sucking characteristics were subdivided into classifications according to the NOMAS criteria and full oral feeding (FOF) status. Quantitative NNS measurement according to the feeding state was compared between groups. When comparing the quantitative NNS measurement by feeding characteristics, the average sucking pressure was significantly higher in infants in the FOF capable group than those in the incomplete FOF group. In addition, the maximum and average sucking pressure was significantly higher in infants with a normal sucking pattern compared to those with a disorganized sucking pattern. The average NNS pressure was divided over the range of 0-3 kPa and the same weight was assigned to each item. When the optimal cut-off value for the sensitivity and specificity of the average NNS pressure to estimate the FOF was set, a pressure of 1.5 kPa yielded the highest sensitivity (84.62%) and specificity (67.65%) on the receiver operating characteristic (ROC) curve. The area under the curve (AUC) was 0.786, and this result was statistically significant. This study presents a quantitative parameter for non-nutritive sucking in preterm infants with the use of a flexible pressure sensor. Results show possible quantitative indicators that can aid in predicting when preterm infants can transition to oral feeding and their prognosis. This will serve as a basis for future research on determining the feeding transition period of newborns with health conditions that affect oral feeding.

A comparison of objective and subjective measurements of non-nutritive sucking in preterm infants

Background Of preterm infants born before 32 weeks of gestation, 40-70% have atypical and immature feeding skills, which could delay initiation of oral feeding. A formal objective measurement of non-nutritive sucking may increase the accuracy of determining the right time to initiate oral feeding, however, most hospital perinatology care units do not own a suction pressure measurement device to objectively measure non-nutritive sucking parameters.
 Objective To compare objective and subjective non-nutritive sucking (NNS) based on sucking pressure, number of suctions per burst, and time between bursts.
 Methods One hundred twenty preterm infants born at 28-34 weeks’ gestation were evaluated for objective and subjective NNS. Data were collected from August to November 2021 at five hospitals in Jakarta. Objective NNS was measured by a suction pressure measurement device, while subjective NNS was clinically examined. Number of suctions per burst, sucking pressure, and time between bursts were analysed by Spearman’s correlation test.
 Results A positive and significant correlation between objective and subjective NNS was found in all parameters (P<0.001). The highest correlation was found in time between bursts (r=0.74; P<0.001), followed by number of suctions per burst (r=0.60; P<0.001), and sucking pressure (r=0.58; P<0.001).
 Conclusion The correlation between objective and subjective NNS examination was moderate in preterm infants. Therefore, an objective NNS measurement is still required for optimizing the examination.

A comparison of objective and subjective measurements of non-nutritive sucking in preterm infants

Background Of preterm infants born before 32 weeks of gestation, 40-70% have atypical and immature feeding skills, which could delay initiation of oral feeding. A formal objective measurement of non-nutritive sucking may increase the accuracy of determining the right time to initiate oral feeding, however, most hospital perinatology care units do not own a suction pressure measurement device to objectively measure non-nutritive sucking parameters.
 Objective To compare objective and subjective non-nutritive sucking (NNS) based on sucking pressure, number of suctions per burst, and time between bursts.
 Methods One hundred twenty preterm infants born at 28-34 weeks’ gestation were evaluated for objective and subjective NNS. Data were collected from August to November 2021 at five hospitals in Jakarta. Objective NNS was measured by a suction pressure measurement device, while subjective NNS was clinically examined. Number of suctions per burst, sucking pressure, and time between bursts were analysed by Spearman’s correlation test.
 Results A positive and significant correlation between objective and subjective NNS was found in all parameters (P<0.001). The highest correlation was found in time between bursts (r=0.74; P<0.001), followed by number of suctions per burst (r=0.60; P<0.001), and sucking pressure (r=0.58; P<0.001).
 Conclusion The correlation between objective and subjective NNS examination was moderate in preterm infants. Therefore, an objective NNS measurement is still required for optimizing the examination.

Effect of an early oral stimulation program on oral feeding in preterm neonates

ObjectiveTo evaluate the effect of prefeeding oral stimulation program on feeding performance, weight gain, and length of hospital stay of preterm infants in neonatal ICUs.BackgroundPrevious research has declared that poor oral-motor developments in premature infants are common. So, most of the preterm infants require individualized therapy. Early intervention of oral-motor management on feeding pattern improves the outcome.Patients and methodsTo reach the goal of this research, a case–control study was conducted. A total of 50 preterm infants were divided into two groups: (a) interventional group (25 preterm infants), which received prefeeding oral stimulation program by stimulation of the oral and perioral structures for 5 min for 10 days and was started immediately after delivery, and (b) control group (25 preterm infants), which did not receive stimulation. Postmenstrual age, total intake volume, body weight, the transition time from initiation of oral feeding to full oral feeding, and feeding efficiency were calculated.ResultsWe found that the mean oral feeding duration was significantly lower among intervention group compared with control group (P = 0.04). The percentage of weight change was significantly higher among intervention group compared with control group (P = 0.03).ConclusionOur study reveals that early sensory oral-motor stimulation with nonnutritive sucking in preterm infants may be effective to expedite oral feeding and hospital discharge. A touch therapy program may confer a statistically significant weight gain for premature babies at much shorter intervals, which leads to a shorter hospital stay.

Non-nutritive sucking for increasing physiologic stability and nutrition in preterm infants.

Non-nutritive sucking (NNS) is used during gavage feeding and in the transition from gavage to breast/bottle feeding in preterm infants to improve the development of sucking behavior and the digestion of enteral feedings. To assess the effects of non-nutritive sucking on physiologic stability and nutrition in preterm infants. We used the standard search strategy of the Cochrane Neonatal Review group to search the Cochrane Central Register of Controlled Trials (CENTRAL; 2016, Issue 1), MEDLINE via PubMed (1966 to 25 February 2016), Embase (1980 to 25 February 2016), and CINAHL (1982 to 25 February 2016). We also searched clinical trials databases, conference proceedings, and the reference lists of retrieved articles for randomised controlled trials. Randomised controlled trials and quasi-randomised trials that compared non-nutritive sucking versus no provision of non-nutritive sucking in preterm infants. We excluded cross-over trials. Two review authors assessed trial eligibility and risk of bias and undertook data extraction independently. We analysed the treatment effects in the individual trials and reported mean differences (MD) for continuous data, with 95% confidence intervals (CIs). We used a fixed-effect model in meta-analyses. We did not perform subgroup analyses because of the small number of studies related to the relevant outcomes. We used the GRADE approach to assess the quality of evidence. We identified 12 eligible trials enrolling a total of 746 preterm infants. Meta-analysis, though limited by data quality, demonstrated a significant effect of NNS on transition from gavage to full oral feeding (MD -5.51 days, 95% CI -8.20 to -2.82; N = 87), transition from start of oral feeding to full oral feeding (MD -2.15 days, 95% CI -3.12 to -1.17; N = 100), and the length of hospital stay (MD -4.59 days, 95% CI -8.07 to -1.11; N = 501). Meta-analysis revealed no significant effect of NNS on weight gain. One study found that the NNS group had a significantly shorter intestinal transit time during gavage feeding compared to the control group (MD -10.50 h, 95% CI -13.74 to -7.26; N = 30). Other individual studies demonstrated no clear positive effect of NNS on age of infant at full oral feeds, days from birth to full breastfeeding, rates and proportion of infants fully breastfeeding at discharge, episodes of bradycardia, or episodes of oxygen desaturation. None of the studies reported any negative outcomes. These trials were generally small and contained various methodological weaknesses including lack of blinding of intervention and outcome assessors and variability on outcome measures. The quality of the evidence on outcomes assessed according to GRADE was low to very low. Meta-analysis demonstrated a significant effect of NNS on the transition from gavage to full oral feeding, transition from start of oral feeding to full oral feeding, and length of hospital stay. None of the trials reported any adverse effects. Well-designed, adequately powered studies using reliable methods of randomisation, concealment of treatment allocation and blinding of the intervention and outcome assessors are needed. In order to facilitate meta-analysis of these data, future research should involve outcome measures consistent with those used in previous studies.

Feeding outcomes and parent perceptions after the pacifier‐activated music player with mother's voice trial

Feeding difficulties common in preterm infants often delay their initial discharge to home (1). Neonatal intensive care unit (NICU) graduates are then at high risk for rehospitalisation during the first year of life, and feeding problems such as aspiration contribute significantly to this morbidity. Gastrointestinal and respiratory diagnoses, primarily aspiration and feeding disorders, account for one-quarter of all readmissions and are among the most expensive readmissions (2). One possible aetiology for these problems is that feeding skills of preterm infants continue to mature to the level of term infants well after discharge from the NICU (3). The acquisition of optimal basic feeding skills in preterm infants before discharge to home can establish a solid basis for later learning of more complex skills and prevention of serious complications.

Cochrane Review: Non‐nutritive sucking for promoting physiologic stability and nutrition in preterm infants

AbstractBackgroundNon‐nutritive sucking is used during gavage feeding and in the transition from gavage to breast/bottle feeding in preterm infants to promote the development of sucking behaviour and improve digestion of enteral feedings.ObjectivesTo determine whether non‐nutritive sucking (NNS) in preterm infants influences: a) weight gain, b) energy intake, c) heart rate, d) oxygen saturation, e) length of hospital stay, f) intestinal transit time, g) age at full oral feeds, or h) any other clinically relevant outcomes.Search strategyMEDLINE and CINAHL databases back to 1976 and the Cochrane Central Register of Controlled Trials (CENTRAL, The Cochrane Library, Issue 1, 2005) were searched. Updated search in March 2010 included MEDLINE (search via PubMed), CINAHL, EMBASE and CENTRAL (The Cochrane Library).Selection criteriaAll trials utilizing experimental or quasi‐experimental designs in which non‐nutritive sucking in preterm infants was compared to no provision of non‐nutritive sucking were eligible for the review.Data collection and analysisData were extracted independently by the two authors. No subgroup analyses were performed because of the small number of studies related to the relevant outcomes.Main resultsThis review consisted of 21 studies, 15 of which were randomized controlled trials. NNS was found to decrease significantly the length of hospital stay in preterm infants. The review did not reveal a consistent benefit of NNS with respect to other major clinical variables (weight gain, energy intake, heart rate, oxygen saturation, intestinal transit time, age at full oral feeds and behavioral state). The review identified other positive clinical outcomes of NNS: transition from tube to bottle feeds and better bottle feeding performance. No negative outcomes were reported in any of the studies.Authors' conclusionsThis review found a significant decrease in length of stay in preterm infants receiving a NNS intervention. The review did not reveal a consistent benefit of NNS with respect to other major clinical variables (weight gain, energy intake, heart rate, oxygen saturation, intestinal transit time, age at full oral feeds and behavioral state).The review identified other positive clinical outcomes of NNS: transition from tube to bottle feeds and better bottle feeding performance. No negative outcomes were reported in any of the studies. There were also a number of limitations of the presently available evidence related to the design of the studies, outcome variability, and lack of long‐term data. Based on the available evidence, NNS in preterm infants would appear to have some clinical benefit. It does not appear to have any short‐term negative effects.Plain Language SummaryNon‐nutritive sucking for promoting physiologic stability and nutrition in preterm infantsAn infant born prematurely may be fed through a tube into the stomach, so is often given a pacifier to suck on to improve nutrition. An infant needs coordinated sucking, swallowing and breathing to feed. The ability to suck and to swallow is present by 28 weeks gestation, but infants are not fully coordinated until 32 to 34 weeks. This means that preterm infants less than 32 weeks gestation are usually not able to feed effectively from the breast or a bottle. They are fed by a small tube that is placed up the nose into the stomach (gavage feeding). Sucking on a pacifier (non‐nutritive sucking) during gavage feeding may encourage the development of sucking behaviour and improve digestion of the feeding. Non‐nutritive sucking may also have a calming effect on infants, although it does have the potential to interfere with breastfeeding. The authors searched the medical literature and found 21 studies, 15 were randomized controlled trials and six were non‐randomized. The total number of infants in each study ranged from 10 to 59. Weight gain was similar with and without use of a pacifier. Preterm infants with pacifiers did not stay in hospital as long as those without and hospital costs were less (two studies). These infants showed less defensive behaviors during tube feedings, spent less time in fussy and active states during and after tube feedings, and settled more quickly into sleep. Their transition to full enteral (by tube or mouth) or bottle feeds (three studies) and bottle feeding performance, in general, (one study) were easier. No negative outcomes were reported.

Non-nutritive sucking for promoting physiologic stability and nutrition in preterm infants.

Non-nutritive sucking is used during gavage feeding and in the transition from gavage to breast/bottle feeding in preterm infants. The rationale for this intervention is that non-nutritive sucking facilitates the development of sucking behaviour and improves digestion of enteral feedings. Non-nutritive sucking has been considered to be a benign intervention, although it has the potential to have a negative effect on breastfeeding or on the incidence of later oral aversion. To determine whether non-nutritive sucking (NNS) in preterm infants influences: a) weight gain, b) energy intake, c) heart rate, d) oxygen saturation, e) length of hospital stay, f) intestinal transit time, g) age at full oral feeds, or h) any other clinically relevant outcomes. MEDLINE and CINAHL databases back to 1976 and the Cochrane Controlled Trials register were searched. Reference lists/bibliographies of relevant articles and reviews were also searched. A comprehensive list of relevant articles was sent to two major authors in this area. They were asked if they knew of any other published or unpublished studies relevant to the area that had not been included in the original list. The searches of MEDLINE, CINAHL and CCTR were updated to December 2000. All trials utilizing experimental or quasi-experimental designs in which non-nutritive sucking in preterm infants was compared to no provision of non-nutritive sucking. Measured clinically relevant outcomes. Reports were in English or a language for which a translator was available. Computerized searches were conducted by both reviewers. All potentially relevant titles and abstracts identified by either reviewer were extracted. All retrieved articles were assessed for relevance independently by each reviewer, based on a pre-determined set of criteria. The reference lists/bibliographies of each article were reviewed independently for additional relevant titles and were also retrieved and assessed for relevance. Articles that met all relevance criteria were then assessed for methodologic quality based on a predetermined set of criteria. Those articles judged to have the appropriate quality by both reviewers were included in the analysis. Data were extracted independently by the two authors. No subgroup analyses were performed because of the small number of studies related to the relevant outcomes. This review consisted of 20 studies, 14 of which were randomized controlled trials. NNS was found to decrease significantly the length of hospital stay in preterm infants. The review did not reveal a consistent benefit of NNS with respect to other major clinical variables (weight gain, energy intake, heart rate, oxygen saturation, intestinal transit time, and age at full oral feeds). The review identified other positive clinical outcomes of NNS: transition from tube to bottle feeds, better bottle feeding performance and behavior. No negative outcomes were reported in any of the studies. This review found a significant decrease in length of stay in preterm infants receiving a NNS intervention. The review did not reveal a consistent benefit of NNS with respect to other major clinical variables (weight gain, energy intake, heart rate, oxygen saturation, intestinal transit time, and age at full oral feeds). The review identified other positive clinical outcomes of NNS: transition from tube to bottle feeds, better bottle feeding performance and behavior. No negative outcomes were reported in any of the studies. There were also a number of limitations of the presently available evidence related to the design of the studies, outcome variability, and lack of long-term data. Based on the available evidence, NNS in preterm infants would appear to have some clinical benefit. It does not appear to have any short-term negative effects. In view of the fact that there are no long-term data, further investigations are recommended. In order to facilitate meta-analysis of these data, future research in this area should involve outcome measures consistent with those used in previous studies. In addition, published reports should include all relevant data.

Effects of Sweet Taste Stimulation on Growth and Sucking in Preterm Infants

To evaluate the effect of sweet taste stimulation in augmenting the reported growth-enhancing effects of nonnutritive sucking in preterm infants who are gavage-fed. Random assignment of preterm infants to receive stimulation by one of three methods during each feeding until totally orally fed. Hospital intensive-care and infant transitional units. Eligibility criteria included body weight greater than or equal to 1,250 g, gestational age younger than 34 weeks, growth parameters appropriate for gestational age, tolerating at least 100 kcals/kg/day by gavage feeding with evidence of weight gain, and no clinical evidence of health complications. Data are presented for 42 infants who completed 14 days of treatment. Exposure to a sweet pacifier, a latex pacifier, or maternal heartbeat sounds during gavage feedings. Growth, time to total oral feeding, and sucking responses. No significant differences in sucking measures were noted among treatment groups. Differences in progression time to total oral feedings and weight gain favored the sweet-pacifier group but were not statistically significant. Oral stimulation of gavage-fed, preterm infants during a 2-week hospitalization was not sufficient to elicit a significant improvement in growth efficiency, progression to total oral feedings, or sucking maturation. Additional studies may show a beneficial effect of chemosensory stimulation in preterm infants.

Transcutaneous Oxygen Tension During Nonnutritive Sucking in Preterm Infants

The effects of nonnutritive sucking on transcutaneous oxygen tension, heart rate, and respiratory rate were studied sequentially in 14 sleeping preterm infants breathing room air. Transcutaneous oxygen tension increased during nonnutritive sucking in infants between 32 and 35 weeks postconceptional age, but not in those between 36 and 39 weeks. This response was not associated with a change in respiratory rate or sleep state, although heart rate tended to increase. These data offer further support for the beneficial effects of nonnutritive sucking in preterm infants.