NCT07109076

Brief Summary

At birth, both the newborn and the mother experience adaptive stress, which can be measured using objective physiological methods. One of the possible methods is monitoring heart rate variability, which is an indirect indicator of the balance between the sympathetic and parasympathetic branches of the autonomic nervous system. The proposed study will monitor the effect of early skin-to-skin contact on heart rate variability in newborns delivered by cesarean section and their mothers. The researchers hypothesize that newborns and mothers who are provided with immediate direct skin-to-skin contact, compared to the control group receiving standard care, will exhibit higher heart beat-to-beat interval variability in the first hours after birth. This is expected to result from reduced stress and activation of the parasympathetic nervous system. The study will include 80 newborn-mother pairs with a gestational age of 39 weeks or more, delivered via planned cesarean section. Participants will be randomly assigned to a study group (skin-to-skin contact lasting at least 15 minutes after cesarean birth) and a control group (standard care), with 40 newborns in each group. Maternal and neonatal ECG will be monitored for 15 minutes following cesarean birth in both groups. In addition, neonatal ECG will be monitored at 6, 12 and 24 hours postpartum. Time-domain analyses of hearth rate variability will be performed.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
80

participants targeted

Target at P50-P75 for not_applicable

Timeline
7mo left

Started Mar 2026

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress25%
Mar 2026Dec 2026

First Submitted

Initial submission to the registry

July 3, 2025

Completed
1 month until next milestone

First Posted

Study publicly available on registry

August 7, 2025

Completed
7 months until next milestone

Study Start

First participant enrolled

March 1, 2026

Completed
9 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2026

Expected
1 day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 2, 2026

Last Updated

March 27, 2026

Status Verified

March 1, 2026

Enrollment Period

9 months

First QC Date

July 3, 2025

Last Update Submit

March 23, 2026

Conditions

Keywords

heart rate variabilitycesarean sectioncesarean birthskin-to-skin contact

Outcome Measures

Primary Outcomes (3)

  • Neonatal RMSSD 15 minutes after birth

    RMSSD is a time-domain HRV measure. It is defined as the square root of the mean of the squares of successive differences between adjacent normal (NN) heartbeats (i.e., RR intervals) and expressed in milliseconds (ms).

    15 minutes following cesarean birth.

  • Neonatal SDNN 15 minutes after birth

    SDNN is a time-domain HRV measure. It is defined as the standard deviation of all normal-to-normal (NN) RR intervals over the recorded period and expressed in milliseconds (ms).

    15 minutes following cesarean birth

  • Neonatal pNN50 15 minutes after birth

    pNN50 is a time-domain HRV measure. It is defined as the percentage of successive NN (normal-to-normal) intervals that differ from each other by more than 50 milliseconds.

    15 minutes following cesarean birth

Secondary Outcomes (12)

  • Maternal RMSSD 15 minutes after birth

    15 minutes following cesarean birth

  • Maternal SDNN 15 minutes after birth

    15 minutes following cesarean birth

  • Maternal pNN50 15 minutes after birth

    15 minutes following cesarean birth

  • Neonatal RMSSD 6 hours after birth

    6 hours after cesarean birth

  • Neonatal SDNN 6 hours after birth

    6 hours after cesarean birth

  • +7 more secondary outcomes

Other Outcomes (1)

  • Neonatal-maternal hearth rate phase synchronisation

    15 minutes after cesarean birth

Study Arms (2)

skin-to-skin contact group

EXPERIMENTAL

Uninterrupted skin-to-skin contact between the neonate and the mother will be initiated immediately and maintained for at least 15 minutes following cesarean birth.

Other: skin-to-skin contact

control group

ACTIVE COMPARATOR

Neonates and mother in this arm will receive routine postnatal care without early skin-to-skin contact. Current routine neonatal care following cesarean section includes delayed umbilical cord clamping. Afterward, the newborn is dried by a midwife, dressed, briefly shown to the mother, and then handed over to the father.

Other: routine care

Interventions

Uninterrupted skin-to-skin contact between the neonate and the mother will be initiated immediately and maintained for at least 15 minutes following cesarean birth.

skin-to-skin contact group

Current routine neonatal care following cesarean section includes delayed umbilical cord clamping. Afterward, the newborn is dried by a midwife, dressed, briefly shown to the mother, and then handed over to the father.

control group

Eligibility Criteria

Age0 Years+
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

  • planned cesarean section
  • gestational age 39 weeks 0/7 or more

You may not qualify if:

  • Pregnancy complications (e.g. hypertensive disorders in pregnancy, fetal growth restriction, etc.)
  • neonatal resuscitation at birth

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University Medical Center Ljubljana

Ljubljana, Ljubljana, 1000, Slovenia

RECRUITING

Central Study Contacts

Miha Lucovnik, MD, PhD

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
OTHER
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor Miha Lucovnik, MD, PhD

Study Record Dates

First Submitted

July 3, 2025

First Posted

August 7, 2025

Study Start

March 1, 2026

Primary Completion (Estimated)

December 1, 2026

Study Completion (Estimated)

December 2, 2026

Last Updated

March 27, 2026

Record last verified: 2026-03

Locations