Effects of skin-to-skin care on electrical activity of the diaphragm in preterm infants during neurally adjusted ventilatory assist

Skin-to-Skin Contact and Diaphragm Electrical Activity in Preterm Infants During Noninvasive Pressure Control

BACKGROUND

Skin-to-skin contact (SSC) is widely implemented in the neonatal intensive care unit (NICU) due to its established role in reducing mortality and morbidity. However, the impact of SSC on diaphragmatic electrical activity (Edi) in premature infants undergoing noninvasive pressure control (NIV-PC) for respiratory management remains insufficiently explored.

PURPOSE

To assess the effects of SSC on Edi and vital signs in preterm infants managed with NIV-PC.

METHODS

A prospective, observational, crossover study was conducted, involving preterm infants admitted to a level III NICU between May 2020 and August 2021, who were receiving respiratory support with NIV-PC. Data were collected at 3 distinct time points: before SSC (pre-SSC period), during SSC (SSC period), and after SSC (post-SSC period). Thirty-minute periods of stable data were extracted for analysis.

RESULTS

A total of 21 SSC sessions were performed on 14 preterm infants, with a median age at the initiation of SSC of 62 days. The median (interquartile range) Edi peak (in microvolts) before, during, and after SSC was 7.1 (5.8-10.8), 6.8 (4.3-8.8), and 7.1 (5.5-8.8), respectively. No statistically significant differences were observed in Edi peak or minimum values during SSC, when compared with the periods before and after the SSC procedure. Likewise, no significant changes were noted in respiratory rate, oxygen saturation, heart rate, or the incidence of apnea.

IMPLICATIONS FOR PRACTICE AND RESEARCH

SSC in preterm infants undergoing NIV-PC does not exacerbate their clinical condition. Further investigations involving diverse patient cohorts are warranted.

Improved respiratory parameters with skin-to-skin contact in premature infants with bronchopulmonary dysplasia on NIV-NAVA

AIM

To determine if skin-to-skin contact (SSC) improved respiratory parameters in premature infants with evolving or established bronchopulmonary dysplasia (BPD) on non-invasive neutrally adjusted ventilator assist (NIV-NAVA).

METHODS

Premature infants (<32 weeks gestational age) with BPD on NIV-NAVA were studied. Continuous readings from the Edi catheter (modified nasogastric feeding tube inserted for NAVA ventilation) were compared: pre-SSC (baby in incubator) and end-SSC (just before end of SSC).

RESULTS

Sixty-five episodes of SSC were recorded in 12 premature infants with median gestational age at birth of 24.4 (23.1-27.0) weeks and birth weight of 642 (530-960) grams. Peak Edi (uV) in end-SSC 11.5 (2.7-38.7) was significantly lower compared to pre-SSC 15.8 (4.0-36.6), p < 0.001. P mean (cmH₂ O) was significantly lower in end-SSC 9.7 (7.3-15.4) compared to pre-SSC 10.3 (7.5-15.5), p = 0.008. Respiratory rate (breaths/min) was significantly lower in end-SSC 52.9 (31.1-78.1) compared to pre-SSC 53.4 (35.1-74.1), p = 0.031. There was no significant difference in inspired oxygen requirement or time on back-up mode in end-SSC 40.0 (22.1-56.1) and 5.9 (0.0-56.0) compared to pre-SSC 39.0 (26.0-56.1) and 5.1 (0.0-29.3), p = 0.556 and p = 0.853 respectively.

CONCLUSION

SSC improved respiratory parameters in premature infants with evolving or established BPD on NIV-NAVA.

NIV-NAVA versus NCPAP immediately after birth in premature infants: A randomized controlled trial

OBJECTIVE

To evaluate whether noninvasive-neurally adjusted ventilatory assist (NIV-NAVA) decrease respiratory efforts compared to nasal continuous positive airway pressure (NCPAP) during the first hours of life.

METHODS

Twenty infants born between 28⁺⁰ and 31⁺⁶ weeks were randomized to NIV-NAVA or NCPAP. Positive end-expiratory pressure was constantly kept at 6 cmH₂O for both groups and the NAVA level was 1.0 cmH₂O/µV for NIV-NAVA group. The electrical activity of diaphragm (Edi) were recorded for the first two hours.

RESULTS

Peak and minimum Edi decreased similarly in both groups (P = 0.98 and P = 0.59, respectively). Leakages were higher in the NIV-NAVA group than in the NCPAP group (P < 0.001). The neural apnea defined as a flat Edi for ≥ 5 s were less frequent in NIV-NAVA group than in NCPAP group (P = 0.046).

CONCLUSIONS

Immediately applied NIV-NAVA in premature infants did not reduce breathing effort, measured as peak Edi. However, NIV-NAVA decreased neural apneic episodes compared to NCPAP.

Skin-to-Skin Contact and the Incidence of Transient Tachypnea of the Newborn

OBJECTIVES

To compare the incidence of transient tachypnea of the newborn (TTN) before and after the implementation of a Baby-Friendly protocol and to determine changes in the rates of TTN symptoms, interventions, completion of skin-to-skin contact.

DESIGN

Retrospective cohort study using data in the electronic medical record.

SETTING

Community-based tertiary obstetric facility.

PARTICIPANTS

We reviewed 934 charts of neonates born at or greater than 34 weeks gestation to women ages 18 years or older and included 790 neonates: 491 in the preimplementation group and 299 in the postimplementation group. Group assignment was based on time of Baby-Friendly protocol implementation. The preimplementation group included neonates born in April, August, and December of 2014, and the postimplementation group included neonates born during these months in 2018.

METHODS

The primary outcome was incidence of TTN. Secondary outcomes were rates of the following: tachypnea symptoms, hypoglycemia, antibiotic administration, and completion of skin-to-skin contact.

RESULTS

The incidence of TTN was 2% (n = 8/491) in the preimplementation group and 1% (n = 4/299) in the postimplementation group (p = 1.000). The rate of tachypnea symptoms decreased from 5% (n = 25/491) to 1% (n = 3/299, p = .003), the rate of hypoglycemia decreased from 11% (n = 54/491) to 3% (n = 10/299, p < .001), and the rate of antibiotic administration decreased from 13% (n = 66/491) to 4% (n = 11/299, p < .001). The skin-to-skin completion rate increased from 16% (n = 79/491) to 61% (n = 183/299, p < .001).

CONCLUSION

Although skin-to-skin contact facilitates physiologic transition to extrauterine life, incidence of TTN was not significantly reduced after the implementation of the Baby-Friendly protocol. However, increased practice of skin-to-skin contact was an improvement in care with implications for the transition to extrauterine life.