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[Postoperative olfactory dysfunction in interhemispheric approach for ruptured anterior communicating artery
1Department of Neurosurgery, Aomori Prefectural Central Hospital.
No Shinkei Geka. Neurological Surgery
|July 1, 1996
Summary
The posterior interhemispheric approach significantly reduces the risk of olfactory dysfunction after surgery for anterior communicating artery aneurysms compared to the subfrontal/interhemispheric approach. This improvement is due to less exposure of olfactory nerves during the posterior approach.
Area of Science:
- Neurosurgery
- Cerebrovascular Surgery
- Skull Base Surgery
Context:
- Anterior communicating artery aneurysms are frequently treated surgically.
- The interhemispheric approach is a common surgical route.
- Postoperative olfactory dysfunction is a known complication of this approach.
Purpose:
- To investigate the mechanisms and incidence of olfactory dysfunction following the interhemispheric approach for anterior communicating artery aneurysms.
- To compare olfactory outcomes between the subfrontal/interhemispheric (SIH) and posterior interhemispheric (PIH) approaches.
Summary:
- This study analyzed 450 patients with ruptured anterior communicating artery aneurysms treated between 1969 and 1994.
- The majority underwent the interhemispheric approach (IH), with a shift from SIH to PIH in 1979.
- Postoperative anosmia incidence decreased from 27.0% with SIH to 5.5% with PIH, attributed to reduced olfactory nerve manipulation in PIH.
Impact:
- The posterior interhemispheric approach offers a significant advantage in preserving olfactory function.
- Understanding the mechanisms of olfactory dysfunction guides surgical technique refinement.
- This research contributes to improving patient quality of life after aneurysm surgery.