Creating a Calmer NICU: Optimizing Growth and Brain Development in Preterm Infants

Summary

Infants born preterm can spend months in the neonatal intensive care unit (NICU) where they experience stressful but essential procedures. Untreated stress is associated with altered brain development. Skin-to-skin care (SSC) is one of the most effective behavioral strategies for mitigating preterm infant stress and improving brain maturation. However, parents may not be always available to provide SSC; some infants cannot be held for long periods for medical reasons. To address this problem, investigators designed Calmer, a patented, prototype therapy bed, for reducing stress in preterm infants. Calmer fits into NICU incubators and provides simultaneously an artificial skin surface, heartbeat sounds and breathing motion, mimicking aspects of SSC; the latter 2 features are individualized for each infant based on their parents' recordings. The 1st randomized controlled trial (RCT) in 58 preterm babies showed that during a routine blood test: Calmer lowered infant behavioral and heart stress responses and stabilized brain blood flow no differently than facilitated tucking; infants could be cared for safely on Calmer up to 6 hours in 1 day; Calmer was well accepted by mothers and staff.

The goal now is to determine the efficacy of Calmer use over 3 weeks to support optimal physical growth and brain development in preterm infants. A 2-group (treatment, control) pilot RCT to test the implementation of an increased "dose" of Calmer exposure over 2-3 continuous weeks is proposed. 30 infants born between 26-30 weeks gestational age in the NICU will be randomized to receive either Calmer, for a minimum of 3 hours in total/day for 2-3 continuous weeks, or to 2-3 weeks of standard NICU care (minimum of 2 and maximum of 3 weeks).

Research questions:

Trial feasibility Q1. Is it feasible to enrol 30 infants, complete a 2-3-week treatment period (minimum of 2 and maximum of 3 weeks), and measure growth outcomes in preterm infants (26-30 weeks GA) in the NICU in a pilot RCT of daily Calmer treatment versus standard NICU care to inform a larger, definitive RCT?

Infant outcomes Q2a. Are there differences in physical growth markers (daily weight gain, head circumference, body length) between preterm infants who receive Calmer and those who receive standard NICU care measured before (baseline) and after 2-3 weeks of daily Calmer exposure? Q2b. Are there differences in brain activity markers, as measured by cerebral electrical (EEG) signalling, between preterm infants who receive Calmer and those who receive standard NICU care, measured during a resting/sleeping state and routine diaper change session at the end of the trial (post 2-3 weeks of daily Calmer exposure)?

Conditions

• Prematurity

Interventions

DEVICE

Calmer

Once randomized, infants in the Calmer group will receive treatment for a minimum cumulative total of 3 hours/day during periods when the infant may be too ill to be held or when parents do not wish to hold their infant or are not present. Calmer does not replicate a parent's contact and so the minimum exposure has been tripled. No upper limit of Calmer use will be set. Each day, the research and/or bedside nurse will record the heart and respiratory rates for a two-minute period. The one-minute average will be used to program Calmer for each infant that day to better simulate day-to-day changes in infant-parent contact. The Neonatal Intensive Care Unit (NICU) research nurse will also train the parents/caregivers to self-measure their resting heart and breathing rates so that if they are away from the NICU for more than one day, these values can be sent to the research/ bedside nurse by phone.

Sponsors & Collaborators

• Women's Health Research Institute of British Columbia

  collaborator OTHER

• University of British Columbia

  lead OTHER

Principal Investigators

• Liisa Holsti, PhD · The University of British Columbia

• Manon Ranger, PhD · The University of British Columbia

Study Design

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Model

PARALLEL

Eligibility

Min Age

26 Weeks

Max Age

30 Weeks

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2021-09-27

Primary Completion

2025-06-30

Completion

2025-12-31

Countries

• Canada

Study Locations