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Superior Vena Cava Flow in Children With Attention Deficit Hyperactivity Disorder

Muhammed Karabulut1, Kübra Yıldırım2

  • 1Department of Paediatric Cardiology, Clinical of Paediatric Health and Diseases, Hamidiye Etfal Training and Research Hospital, Istanbul, Türkiye.

Psychiatry Investigation
|October 5, 2023
PubMed

Insights

This study found that children with Attention Deficit/Hyperactivity Disorder (ADHD) have higher superior vena cava (SVC) flow, an indicator of cerebral blood flow. Methylphenidate (MPH) treatment reduced this flow, suggesting its potential as a biomarker for ADHD diagnosis and treatment.

Area of Science:

  • Neuroscience
  • Pediatrics
  • Cardiovascular Physiology

Background:

  • Attention Deficit/Hyperactivity Disorder (ADHD) is a common childhood neurobehavioral disorder with ongoing research into its pathophysiology.
  • Cerebral venous circulation in ADHD has not been extensively studied, nor has the impact of methylphenidate (MPH) on it.
  • Superior Vena Cava (SVC) flow, measured noninvasively via transthoracic echocardiography, serves as an indirect indicator of cerebral venous flow.

Purpose of the Study:

  • To investigate cerebral venous circulation in children with ADHD by measuring SVC flow.
  • To evaluate the effect of osmotic-release oral system (OROS)-MPH treatment on SVC flow in ADHD patients.

Main Methods:

  • Transthoracic echocardiography was used to measure SVC flow.
  • The study included 44 healthy children and 40 children diagnosed with ADHD.
  • SVC flows were recorded in healthy children and in ADHD patients before and after OROS-MPH treatment initiation.

Main Results:

  • ADHD patients exhibited significantly higher SVC flow compared to healthy controls.
  • OROS-MPH treatment led to a significant reduction in SVC flow among ADHD patients.
  • Patients with inadequate response to MPH treatment did not show a decrease in SVC flow.

Conclusions:

  • This study is the first to demonstrate an association between increased SVC flow and ADHD in children.
  • MPH treatment effectively reduced elevated SVC flow in ADHD patients.
  • Noninvasively measured SVC flow may serve as a valuable biomarker for ADHD diagnosis and treatment monitoring in future research.
Abstract

Keywords:
ADHDBrain blood flowMethylphenidateSuperior vena cava

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