Neonatology
Original Paper
Normal Newborn Heart Rate in the First Five Minutes of Life Assessed by Dry-Electrode ElectrocardiographyLinde J.E.a · Schulz J.b, d · Perlman J.M.h · Øymar K.a, g · Francis F.i · Eilevstjønn J.f · Ersdal H.L.c, eDepartments of aPediatrics, bResearch and cAnesthesiology and Intensive Care, Stavanger University Hospital, Departments of dElectrical Engineering and Computer Science and eHealth Science, University of Stavanger, and fLaerdal Medical, Stavanger, and gDepartment of Clinical Science, University of Bergen, Bergen, Norway; hDivision of Neonatology, Department of Pediatrics, Weill Cornell Medical College, New York, N.Y., USA; iDepartment of Maternal and Child Health, Haydom Lutheran Hospital, Mbulu, Tanzania
Keywords: NewbornHeart rateElectrocardiography |
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Article / Publication Details
Received: November 12, 2015
Accepted: April 05, 2016
Published online: June 02, 2016
Issue release date: September 2016
Number of Print Pages: 7
Number of Figures: 5
Number of Tables: 0
ISSN: 1661-7800 (Print)
eISSN: 1661-7819 (Online)
For additional information: https://www.karger.com/NEO
Abstract
Background: There is limited evidence regarding the heart rate (HR) during the first minutes of life. Nonetheless, resuscitative actions within the first minute are partly guided by different HR levels. The advent of an electrocardiographic (ECG) HR sensor with early HR detection has provided the opportunity to study changes immediately following delivery. Objective: The objectives were to determine immediately following delivery: (i) the time to achievement of reliable ECG signals using dry electrodes, (ii) changes in HR, and (iii) the influence of the onset of breathing and cord clamping on the HR. Methods: Healthy term neonates were randomly included between July and October 2013. The HR was recorded by the ECG sensor, placed over the abdomen immediately after birth. Results: Fifty-five newborns were included. The median time from birth to placement of the HR sensor was 3 s (quartiles: 2 and 5), and the median time to the start of breathing was 6 s (quartiles: 2 and 15). The HR was around 120 beats/min (bpm) in the first seconds of life. As determined via breakpoint analysis, the HR increased by 1 beat in the first 40 s to 149 ± 33 bpm, followed by a moderate increase until 130 s and stabilization thereafter. After the onset of breathing, the HR decreased for 10 s and then increased. Minimal HR changes were observed after cord clamping. Conclusion: A dry-electrode ECG sensor detected reliable ECG signals almost immediately after birth. The normal HR increased significantly in spontaneously breathing infants during the first minute, influenced by the onset of breathing. Delayed cord clamping had a minimal impact on the HR, likely reflecting an earlier onset of breathing.
© 2016 S. Karger AG, Basel
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References
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External Resources
- Boere I, Roest AA, Wallace E, Ten Harkel AD, Haak MC, Morley CJ, Hooper SB, te Pas AB: Umbilical blood flow patterns directly after birth before delayed cord clamping. Arch Dis Child Fetal Neonatal Ed 2015;100:F121-F125.
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Article / Publication Details
Received: November 12, 2015
Accepted: April 05, 2016
Published online: June 02, 2016
Issue release date: September 2016
Number of Print Pages: 7
Number of Figures: 5
Number of Tables: 0
ISSN: 1661-7800 (Print)
eISSN: 1661-7819 (Online)
For additional information: https://www.karger.com/NEO
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