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Related Concept Videos

Vascular Spasm01:16

Vascular Spasm

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The vascular phase, also known as vasospasm, is the initial stage of hemostasis, crucial for preventing excessive bleeding when a blood vessel is injured. After a vessel is cut, nerves in the damaged area trigger pain and other sensory impulses. Simultaneously, the smooth muscles in the vessel wall contract, resulting in a vascular spasm. This contraction reduces the vessel's diameter at the injury site, slowing or stopping blood loss through the vessel wall. Vascular spasms typically last...
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Aortic regurgitation (AR) is when the aortic valve does not close or seal properly, leading to backward blood circulation from the aorta into the left ventricle during diastole. Common causes of AR include rheumatic heart disease, congenital valve defects, and aortic root dilation. Managing AR requires a multifaceted approach to alleviate symptoms, preserve left ventricular function, and address the underlying cause of the regurgitation. Patients with symptomatic AR or significant left...
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Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

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Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
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Related Experiment Video

Updated: Aug 31, 2025

Occlusion of the Great and Small Saphenous Vein Using Copolymeric Glue Based on N-Butyl Cyanoacrylate and Methacryloxy Sulfolane
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COManeci MechANical Dilation for vasospasm (COMMAND): multicenter experience.

Mohamed M Salem1, Jane Khalife2, Sohum Desai3

  • 1Department of Neurosurgery, Hospital of the University of Pennsylvania, Penn Medicine, Philadelphia, Pennsylvania, USA.

Journal of Neurointerventional Surgery
|August 24, 2022
PubMed
Summary
This summary is machine-generated.

The Comaneci device effectively treats refractory intracranial vasospasm, showing significant vessel score improvement and a favorable safety profile in a large multicenter study. Further trials are recommended.

Keywords:
HemorrhageSubarachnoid

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A Methodological Approach to Non-invasive Assessments of Vascular Function and Morphology
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Area of Science:

  • Neurology
  • Interventional Neuroradiology
  • Vascular Surgery

Background:

  • Refractory intracranial vasospasm poses significant risks after subarachnoid hemorrhage.
  • Endovascular mechanical dilatation is an emerging treatment modality.

Purpose of the Study:

  • To evaluate the safety and efficacy of the Comaneci device for endovascular treatment of refractory intracranial vasospasm.
  • To report the largest multicenter experience with this device.

Main Methods:

  • Retrospective analysis of prospectively maintained registries from 11 North American centers (2020-2022).
  • Inclusion of patients undergoing Comaneci mechanical dilatation for vasospasm, with optional intra-arterial vasodilators.
  • Assessment of pre- and post-treatment vasospasm scores, procedural complications, and functional outcomes.

Main Results:

  • 129 vessels in 40 patients treated, with 84.5% having severe-to-critical vasospasm.
  • Significant vasospasm reduction achieved in 89.9% of treated vessels.
  • No major device-related complications; 51.5% of patients had favorable clinical outcomes at 6 months.

Conclusions:

  • The Comaneci device offers a safe and effective complementary strategy for refractory intracranial vasospasm.
  • The device demonstrates reasonable efficacy in improving radiological scores.
  • Further prospective trials are warranted to confirm these findings.