Autonomic nervous system dysregulation: breathing and heart rate perturbation during wakefulness in young girls with Rett syndrome.

Abstract:

:This study characterizes cardiorespiratory dysregulation in young girls with MECP2 mutation-confirmed Rett syndrome (RS). Respiratory inductance plethysmography of chest/abdomen and ECG was obtained during daytime wakefulness in 47 girls with MECP2 mutation-confirmed RS and 47 age-, gender-, and ethnicity-matched controls (ages 2-7 y). An in-home breath-to-breath and beat-to-beat characterization was conducted and revealed that breathing was more irregular, with an increased breathing frequency, mean airflow, and heart rate in RS versus controls. There was a decreased correlation between normal breathing and heart rate variability, and an exaggerated increase in heart rate response to breathholds in RS versus controls. We conclude that girls with RS have cardiorespiratory dysregulation during breathholds as well as during "normal" breaths and during breaths before and subsequent to breathholds. This dysregulation may offer insight into the mechanisms that render girls with RS more vulnerable to sudden death.

journal_name

Pediatr Res

journal_title

Pediatric research

authors

Weese-Mayer DE,Lieske SP,Boothby CM,Kenny AS,Bennett HL,Silvestri JM,Ramirez JM

doi

10.1203/01.pdr.0000238302.84552.d0

subject

Has Abstract

pub_date

2006-10-01 00:00:00

pages

443-9

issue

4

eissn

0031-3998

issn

1530-0447

pii

01.pdr.0000238302.84552.d0

journal_volume

60

pub_type

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