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Underlying diseases in syncope of children in China

Li Chen1, Cheng Wang, Hongwei Wang

  • 1Department of Pediatrics, Peking University 1st Hospital, Beijing, China.

Medical Science Monitor : International Medical Journal of Experimental and Clinical Research
|June 2, 2011
PubMed

Insights

Neurally-mediated syncope, including vasovagal syncope (VVS) and postural orthostatic tachycardia syndrome (POTS), is the most common cause of syncope in children. This study analyzed the spectrum of underlying diseases in pediatric syncope cases.

Area of Science:

  • Pediatric Cardiology
  • Autonomic Nervous System Disorders
  • Clinical Medicine

Background:

  • Syncope is a common reason for emergency department visits, with unclear etiology in many cases.
  • While head-up tilt testing aids diagnosis, the spectrum of pediatric syncope causes remains incompletely understood.
  • This study investigates the underlying diseases contributing to syncope in children.

Purpose of the Study:

  • To analyze the spectrum of underlying diseases causing syncope in children.
  • To identify the most prevalent causes of pediatric syncope.
  • To characterize the hemodynamic patterns associated with neurally-mediated syncope in children.

Main Methods:

  • A multi-center retrospective study involving 888 children (aged 5-18 years) diagnosed with syncope.
  • Data collected from August 1999 to March 2009 across multiple Chinese provinces.
  • Analysis of clinical and laboratory data to determine the etiology of syncope.

Main Results:

  • Neurally-mediated syncope was the most frequent diagnosis, encompassing vasovagal syncope (VVS) and postural orthostatic tachycardia syndrome (POTS).
  • Vasovagal syncope (VVS) accounted for 32.8% of cases (vasoinhibitory, cardioinhibitory, or mixed responses).
  • Postural orthostatic tachycardia syndrome (POTS) was diagnosed in 32.2% of children, and unexplained syncope in 31.5%.

Conclusions:

  • Neurally-mediated syncope is the predominant cause of syncope in the pediatric population.
  • Vasovagal syncope (VVS) and postural orthostatic tachycardia syndrome (POTS) represent the most common hemodynamic patterns observed.
  • Understanding these common causes aids in the diagnosis and management of syncope in children.
Abstract

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