Related Experiment Video
Updated: Jan 29, 2026
18:50
Microsurgical Clip Obliteration of Middle Cerebral Aneurysm Using Intraoperative Flow Assessment
Published on: September 25, 2009
14.0K
Subclavian Steal Flow-Related Aneurysm Formation
Daniel A Tonetti1, Brian T Jankowitz1
1Stroke Institute and Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
World Neurosurgery
|February 12, 2019
Summary
Subclavian steal syndrome, a condition causing reversed blood flow in the vertebral artery, can rarely lead to vertebrobasilar junction aneurysms. This case highlights a subarachnoid hemorrhage originating from such a rare aneurysm.
Area of Science:
- Vascular Surgery
- Neurology
- Radiology
Background:
- Subclavian steal syndrome involves reversed vertebral artery flow due to subclavian artery atherosclerosis.
- This condition typically causes intermittent vertebrobasilar ischemia or extremity claudication.
- Serious neurologic complications are rare but possible.
Observation:
- Aneurysm formation at the vertebrobasilar junction is an uncommon sequela.
- Increased flow through one vertebral artery, as seen in subclavian steal syndrome, may contribute to aneurysm development.
- The case presents a rare instance of subarachnoid hemorrhage from a vertebrobasilar junction aneurysm.
Findings:
- The study details a rare case of subarachnoid hemorrhage.
- The hemorrhage originated from a vertebrobasilar junction aneurysm.
- The aneurysm was directly related to subclavian steal syndrome.
Implications:
- This case underscores the potential for severe neurologic events from subclavian steal syndrome.
- It highlights the importance of considering vertebrobasilar junction aneurysms in patients with this syndrome.
- Further research may elucidate the precise mechanisms linking subclavian steal to aneurysm formation and rupture.
Related Concept Videos
01:30Aneurysm I: Introduction
408
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...
408
01:31Formation of Species
45.0K
Speciation describes the formation of one or more new species from one or sometimes multiple original species. The resulting species are discrete from the parent species, and barriers to reproduction will typically exist. There are two primary mechanisms, speciation with and without geographic isolation—allopatric and sympatric speciation, respectively.
45.0K
01:22Aneurysm IV: Nursing Management
468
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...
468
01:26Aneurysm III: Interprofessional Care
298
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...
298
02:16Solution Formation
37.5K
There is no one solvent that can dissolve every type of solute. Some substances that readily dissolve in a certain solvent might be insoluble in a different solvent. A simple way to predict which substances dissolve in which solvent is the phrase "like dissolves like". This means that polar substances, such as salt and sugar, dissolve in a polar substance like water. In contrast, non-polar substances are more soluble in non-polar solvents such as carbon tetrachloride.
This selective...
This selective...
37.5K
02:37Standard Enthalpy of Formation
49.2K
Enthalpy changes are typically tabulated for reactions in which both the reactants and products are at the same conditions. A standard state is a commonly accepted set of conditions used as a reference point for the determination of properties under other different conditions. For chemists, the IUPAC standard state refers to materials under a pressure of 1 bar and solutions at 1 M and does not specify a temperature. Many thermochemical tables list values with a standard state of 1 atm. Because...
49.2K