High frequency band limits in spectral analysis of heart rate variability in preterm infants
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Hadas Israeli-Mendlovic
,
Luba Zuk
Abstract
Objectives
The current study aims to assess different high-frequency (HF) band power calculations based on different frequency bandwidth values, and compare them with the time domain the root mean square of successive RR differences (RMSSD) value in preterm infants.
Methods
At week 32, electrocardiogram (ECG) and breathing rate (BR) were recorded for 24 h on 30 preterm infants born between 28 and 32 weeks. The recording held in the neonatal intensive care unit without any interruption of routine.
Results
The median 24 h BR was 40–78 breaths per minute. The RMSSD was highly and positively correlated with frequency bands that were based on each preterms BR range, or on a constant frequency with band limits of 0.4–2 Hz.
Conclusions
At week 32, HF band Hz limits should be calculated based on each child’s breathing rate, generally between 0.4 and 2 Hz.
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Research funding: None declared.
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Author contributions: This work was performed in partial fulfillment of the requirements for a PhD degree of Hadas Israeli-Mendlovic, Sackler Faculty of Medicine, Tel Aviv University, Israel. All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Competing interests: Authors state no conflict of interest.
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Informed consent: Parents signed the consent forms before the study.
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Ethical approval: The study protocol was approved by the Helsinki committee of Shaare Zedek Medical Center (0144-16-SZMC) and the Ethics Committee of Tel Aviv University.
References
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© 2021 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
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Articles in the same Issue
- Frontmatter
- Corner of Academy
- Cost of providing cell-free DNA screening for Down syndrome in Finland using different strategies
- Adverse perinatal outcomes following the prenatal diagnosis of isolated single umbilical artery in singleton pregnancies: a systematic review and meta-analysis
- Original Articles – Obstetrics
- Perinatal outcomes in women with severe acute respiratory syndrome coronavirus 2 infection: comparison with contemporary and matched pre-COVID-19 controls
- The postpartum period during the COVID-19 pandemic: investigating Turkish women’s postpartum support and postpartum-specific anxiety
- First-line noninvasive management of cytomegalovirus primary infection in pregnancy
- Ultrasound and magnetic resonance imaging in the diagnosis of clinically significant placenta accreta spectrum disorders
- Improved management of placenta accreta spectrum disorders: experience from a single institution
- A randomized controlled trial of two-doses of vaginal progesterone 400 vs. 200 mg for prevention of preterm labor in twin gestations
- The impact of preimplantation genetic testing for aneuploidy on prenatal screening
- Original Articles – Fetus
- Myocardial deformation analysis in late-onset small-for-gestational-age and growth-restricted fetuses using two-dimensional speckle tracking echocardiography: a prospective cohort study
- HDlive Flow Silhouette with spatiotemporal image correlation for assessment of fetal cardiac structures at 12 to 14 + 6 weeks of gestation
- Umbilical artery pulsatility index and half-peak systolic velocity in second- and third-trimester fetuses with trisomy 18 and 13
- Original Articles – Neonates
- Pulmonary hypertension in infants with bronchopulmonary dysplasia: risk factors, mortality and duration of hospitalisation
- Outcomes from birth to 6 months of publicly insured infants born to mothers with severe acute respiratory syndrome coronavirus 2 infection in the United States
- Placental findings are not associated with neurodevelopmental outcome in neonates with hypoxic-ischemic encephalopathy – an 11-year single-center experience
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- Bacterial DNA detection in very preterm infants assessed for risk of early onset sepsis
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- Letter to the Editors
- Comment on Abdel Wahab et al.: A randomized controlled trial of two-doses of vaginal progesterone 400 vs. 200 mg for prevention of preterm labor in twin gestations
- Re: Comment on Abdel Wahab et al.: A randomized controlled trial of two-doses of vaginal progesterone 400 vs. 200 mg for prevention of preterm labor in twin gestations
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