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Related Concept Videos

Assessment of blood pressure in brachial artery(one-step method)01:15

Assessment of blood pressure in brachial artery(one-step method)

This procedural guide systematically measures blood pressure using an oscillometric digital sphygmomanometer, emphasizing accuracy, patient safety, and comfort.
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Assessing Blood pressure using a doppler ultrasound01:19

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Assessment of blood pressure in brachial artery(two-step method)01:23

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Continuous Venous-Arterial Doppler Ultrasound During a Preload Challenge
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Published on: January 20, 2023

Juvenile Bow Hunter's Stroke without Hemodynamic Changes.

Kozue Saito1, Makito Hirano, Toshiaki Taoka

  • 1Department of Neurology, Nara Medical University, Kashihara, Nara, Japan.

Clinical Medicine Insights. Case Reports
|July 20, 2011
PubMed
Summary

Bow hunter's stroke (BHS), a cerebrovascular condition, can occur without hemodynamic changes. This case highlights non-hemodynamic BHS in a young patient with vertebrobasilar stroke.

Keywords:
BHSbow hunter’s strokecerebrovascular diseasehemodynamic changesvertebral artery

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Area of Science:

  • Neurology
  • Cerebrovascular Diseases
  • Neuroimaging

Background:

  • Bow hunter's stroke (BHS) is a cerebrovascular disease typically linked to vertebral artery (VA) occlusion during head rotation.
  • It is often associated with hemodynamic changes causing vertebrobasilar insufficiency symptoms like vertigo and faintness.
  • Artery-to-artery embolism is a debated mechanism in BHS.

Observation:

  • A 26-year-old male presented with VA occlusion upon head rotation and recurrent thalamic infarctions.
  • The patient exhibited an anomalous bypass of the VA.
  • Crucially, this patient showed no symptomatic hemodynamic changes despite the VA occlusion.

Findings:

  • This case demonstrates a non-hemodynamic mechanism for Bow hunter's stroke.
  • Anomalous VA bypass prevented typical hemodynamic alterations.
  • Repetitive thalamic infarctions occurred without evidence of hemodynamic compromise.

Implications:

  • Non-hemodynamic BHS should be considered in the differential diagnosis of juvenile vertebrobasilar stroke.
  • This finding expands the understanding of BHS pathophysiology beyond hemodynamic compromise.
  • Highlights the importance of considering anatomical variations in cerebrovascular events.