Spectral analysis of heart rate variability in premature infants with feeding bradycardia
| Autor: | David Curcie, Mark Hiatt, Harel Rosen, Sutharanam Veerappan, Thomas Hegyi, William Craelius |
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| Rok vydání: | 2000 |
| Předmět: |
Bradycardia
Male medicine.medical_specialty Birth weight Gestational Age Infant Premature Diseases Parasympathetic nervous system Electrocardiography Heart Rate Internal medicine Heart rate medicine Heart rate variability Birth Weight Humans business.industry Body Weight Infant Newborn Gestational age Signal Processing Computer-Assisted Bottle Feeding Low birth weight Postprandial medicine.anatomical_structure Endocrinology Pediatrics Perinatology and Child Health Apgar Score Female medicine.symptom business Infant Premature |
| Zdroj: | Pediatric research. 47(5) |
| ISSN: | 0031-3998 |
| Popis: | An elevated level of baseline parasympathetic activity was noted in a group of premature infants suffering from bradycardia during feeding. At approximately 34 wk post-conceptional age, the heart rates of 12 infants with feeding bradycardia (birth weight = 1539 +/- 279 g; gestational age = 31.0 +/- 1.6 wk) and 10 controls (birth weight = 1710 +/- 304 g; gestational age = 32.0 +/- 1.4 wk) were recorded 1 h before and 1 h after feeding. EKG data were digitized and 3.2-min segments of data were analyzed to determine the spectral power at very low (VLF = 0.003-0.03 Hz), low (LF = 0.03-0.39 Hz), and high (HF = 0.40-1.00 Hz) frequencies. In preterm infants with feeding bradycardia, an elevation in baseline parasympathetic activity was evident before feeding, as indicated by significantly higher HF power and a lower LF/HF ratio. This elevation in baseline parasympathetic activity may contribute to the observed bradycardia during feeding. |
| Databáze: | OpenAIRE |
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