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How reliable is pupillary evaluation following subarachnoid hemorrhage? Effect of oculomotor nerve degeneration secondary to posterior communicating artery vasospasm: First experimental study

Erişim

info:eu-repo/semantics/closedAccess

Tarih

2018

Yazar

Öztürk, Cengiz
Özdemir, Nuriye Güzin
Kanat, Ayhan
Aydın, Mehmet Dumlu
Fındık, Hüseyin
Aydın, Nazan
Kabalar, Mehmet Eşref
Kazdal, Hızır
Yolaş, Coşkun
Baykal, Orhan
Çalık, Muhammet

Üst veri

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Künye

Ozturk, C., Ozdemir, N. G., Kanat, A., Aydin, M. D., Findik, H., Aydin, N., Kabalar, M. E., Kazdal, H., Yolas, C., Baykal, O., & Calik, M. (2018). How Reliable Is Pupillary Evaluation Following Subarachnoid Hemorrhage? Effect of Oculomotor Nerve Degeneration Secondary to Posterior Communicating Artery Vasospasm: First Experimental Study. Journal of neurological surgery. Part A, Central European neurosurgery, 79(4), 302–308. https://doi.org/10.1055/s-0037-1608841

Özet

Background and Study Aim Basic neurophysiologic principles of the light reflex are well known. However, the effects of degenerated axon densities of oculomotor nerves (OMNs) secondary to posterior communicating artery (PComA) vasospasm following subarachnoid hemorrhage (SAH) have not been investigated. Our aim was to study this subject. Methods This study was conducted on 19 rabbits. There was a control group of five animals, a sham group of five animals in which saline was injected into the cisterna magna and a study group of nine animals in which homologous blood was injected into the cisterna magna. Pupillary diameters were measured for 1week, then the animals were decapitated. the normal and degenerated axon densities of the OMNs were examined by stereological methods. Vasospasm indexes (VSIs) of posterior communicating arteries (PComAs) supplying OMNs were estimated and analyzed statistically. Results the pupillary diameter was 5.439368 mu m, and the mean axon density of the OMNs was 0.924 +/- 324/mm (3) in the control group. the pupillary diameter and degenerated axon density of the OMNs in animals of the sham group were 6.980 +/- 0.370 mu m and 36 +/- 8/mm (3) , respectively. the pupillary diameter was 9.942 +/- 653 mu m, and degenerated axon density of the OMNs was 265 +/- 57/mm (3) in animals with SAH. the mean VSI values of PComAs were 0.927 +/- 0.224 in the control group, 1.542 +/- 0.257 in the sham group, and 2.321 +/- 0.324 in the SAH group. Conclusion We found a linear relationship between the axon density of the OMNs and pupillary diameters. High degenerated neuron density in the OMNs may be responsible for an unresponsive pupillary that has not been mentioned in the literature.

Kaynak

Journal of Neurological Surgery Part A-Central European Neurosurgery

Cilt

79

Sayı

4

Bağlantı

https://doi.org/10.1055/s-0037-1608841
https://hdl.handle.net/11436/1808

Koleksiyonlar

  • PubMed İndeksli Yayınlar Koleksiyonu [2440]
  • Scopus İndeksli Yayınlar Koleksiyonu [5917]
  • TF, Cerrahi Tıp Bilimleri Bölümü Koleksiyonu [1215]
  • WoS İndeksli Yayınlar Koleksiyonu [5260]



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