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Aneurysm I: Introduction01:30

Aneurysm I: Introduction

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An aortic aneurysm is a localized outpouching or dilation at a weak point in the artery wall. It may involve different parts of the aorta, such as the abdominal aorta, aortic arch, or thoracic aorta.Etiological factorsSeveral disorders are associated with aortic aneurysms.Congenital causes, such as primary connective tissue disorders like Marfan syndrome, impact the integrity and strength of connective tissues, notably affecting the aorta. Marfan syndrome is a genetic disorder that specifically...
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Dimensional analysis is a valuable technique in fluid mechanics for simplifying complex problems by reducing them into dimensionless groups. These groups capture the essential relationships between the variables involved, allowing researchers and engineers to analyze fluid flow without dealing with each variable individually. This approach reduces the number of independent variables, allowing for easier analysis and better understanding of physical phenomena.
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Dimensional analysis is a powerful tool that is used in physics and engineering to understand and predict the behavior of physical systems. The basic idea behind dimensional analysis is to express physical quantities in terms of fundamental dimensions such as the mass, length, and time. Derived dimensions like the velocity, acceleration, and force are derived from the combinations of these fundamental dimensions.
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Vigilant monitoring for aneurysm rupture is essential for patients undergoing aortic surgery.Preoperative Nursing ManagementContinuously monitor the patient for manifestations of aneurysm rupture, such as pallor, weakness, tachycardia, hypotension, abdominal, back, groin, or periumbilical pain, changes in consciousness, and a pulsating abdominal mass. Regularly assess the patient's peripheral pulses.Instruct the patient to consume a clear liquid diet the day before surgery and administer...
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Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...
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Updated: Jan 27, 2026

Microsurgical Clip Obliteration of Middle Cerebral Aneurysm Using Intraoperative Flow Assessment
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Microsurgical Technique for Basilar Apex Aneurysm Clipping: Two-Dimensional Video.

Miguel Angel Lopez-Gonzalez1, Fransua Sharafeddin2, Timothy Marc Eastin1

  • 1Department of Neurosurgery, Loma Linda University, School of Medicine, Loma Linda, California, USA.

World Neurosurgery
|March 14, 2019
PubMed
Summary

Surgical clipping successfully treated a wide-neck basilar apex aneurysm and an associated anterior communicating artery aneurysm in a hypertensive smoker. Complete exclusion was confirmed at 1-year follow-up, with full recovery from temporary oculomotor nerve palsy.

Keywords:
Basilar apex aneurysmCranio-orbito-zygomatic craniotomyMicrosurgical clipping

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Area of Science:

  • Neurosurgery
  • Vascular Neurology
  • Interventional Neuroradiology

Background:

  • A 57-year-old female presented with hypertension, smoking history, and headaches.
  • Imaging revealed an unruptured 8-mm wide-neck basilar apex aneurysm and a 3-mm anterior communicating artery aneurysm.

Observation:

  • Surgical clipping was chosen over endovascular treatment due to aneurysm characteristics and anatomical space.
  • A cranio-orbito-zygomatic craniotomy with anterior clinoidectomy facilitated access for basilar apex aneurysm clipping.
  • Temporary clipping of the basilar trunk allowed for safe aneurysm obliteration.

Findings:

  • The basilar apex aneurysm was successfully clipped, followed by clipping of the anterior communicating artery aneurysm.
  • Intraoperative angiography and Micro-Doppler confirmed complete aneurysm exclusion and patent parent vessels.
  • The patient experienced transient partial oculomotor nerve palsy, which resolved completely within 2 weeks.

Implications:

  • Surgical clipping is a safe and effective treatment for complex basilar apex aneurysms, even with associated lesions.
  • Minimally invasive techniques, including anterior clinoidectomy, enhance surgical exposure and safety.
  • Complete aneurysm exclusion achieved via surgical clipping offers a definitive treatment option with favorable long-term outcomes.