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Published on: June 5, 2019
Changes in heart rate variability in a premature infant with hydrocephalus
Zuzana Uhrikova1, Branislav Kolarovszki, Kamil Javorka
1Clinic of Neonatology, Jessenius Medical Faculty, Comenius University, Martin, Slovakia Republic.
Insights
Heart rate variability analysis in a premature infant with hydrocephalus showed improved cardiac regulation after a drainage procedure. This indicates better cardiovascular control in infants with hydrocephalus following shunt surgery.
Area of Science:
- Neonatal Medicine
- Pediatric Cardiology
- Neurology
Background:
- Hydrocephalus in premature infants can lead to increased intracranial pressure.
- Cardiovascular dysregulation is a concern in these vulnerable patients.
- Heart rate variability (HRV) offers a non-invasive method to assess autonomic function.
Observation:
- A case study of a premature infant with hydrocephalus was conducted.
- Electrocardiography and HRV were analyzed before and after ventriculoperitoneal shunt insertion.
- Three HRV recordings were obtained at different time points: pre-shunt, post-shunt, and pre-discharge.
Findings:
- Before the drainage procedure, the infant exhibited reduced HRV with dominant sympathetic activity.
- Following shunt surgery, HRV parameters significantly improved, particularly in spectral analysis.
- A decrease in the LF/HF ratio and relative LF power indicated enhanced parasympathetic activity post-surgery.
Implications:
- Drainage procedures for hydrocephalus in premature infants can markedly improve cardiac autonomic regulation.
- HRV analysis serves as a valuable tool for monitoring cardiac dysregulation in infants with hydrocephalus.
- This monitoring can help assess cardiovascular control improvements after successful surgical intervention.
Abstract:
Objective To define changes of heart rate variability in premature infant with hydrocephalus before and after drainage procedure. Study Design The authors report a case of a premature infant with hydrocephalus with analysis of heart rate variability before and after drainage procedure. Three subsequent recordings of the electrocardiography and heart rate variability were done: the first at the age of 22 days before insertion of ventriculoperitoneal shunt, the second at the age of 36 days with functional shunt, the third at the age of 71 days (before discharge). Results Before drainage operation, there was reduced heart rate variability in time and spectral domains, and sympathetic activity was dominant. After surgery, an increase in heart rate variability parameters was found, particularly with spectral analysis. The ratio of low-frequency/high-frequency band and relative power of the low-frequency band decreased, reflecting enhanced parasympathetic activity. Conclusion Results of the heart rate variability analysis in a preterm infant with hydrocephalus before and after drainage procedure showed marked improvement in chronotropic cardiac regulation. Evaluation of heart rate variability in premature infants with hydrocephalus with increased intracranial pressure can be an additional method for monitoring of cardiac dysregulation and improvement of the cardiovascular control after successful drainage procedure.
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