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Asian J Neurosurg. 2017 Jul-Sep;12(3):365-373. doi: 10.4103/1793-5482.185069.

A systematic review about the position-related complications of acoustic neuroma surgery via suboccipital retrosigmoid approach: Sitting versus lateral.

Asian journal of neurosurgery

Mahdi Safdarian, Manouchehr Safdarian, Roger Chou, Seyed Mahmoud Ramak Hashemi, Vafa Rahimi-Movaghar

Affiliations

  1. Department of Neurosurgery, Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran.
  2. Department of Medical Informatics and Clinical Epidemiology, Oregon Health and Science University, Portland, Oregon, USA.
  3. Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran.

PMID: 28761510 PMCID: PMC5532917 DOI: 10.4103/1793-5482.185069

Abstract

This systematic review wasdesigned to compare the complications of acoustic neuroma surgery via the suboccipital retrosigmoid approach in the sitting versus lateral positions. Searches for randomized trials and observational studies about the complications of acoustic neuroma surgery were performed in five medical databases (though October 2015) including PubMed, MEDLINE (In-Process and Other Non-Indexed Citations), EMBASE, Cochrane Central Register of Controlled Trials (CENTRAL) and PsycINFO. Primary outcomes in this study were venous air emboli, neuropsychological defects, CSF leak, facial and abducens nerves palsy, postoperative deafness, hydrocephalus and mortality. Secondary outcomes were total tumor removal, facial and cochlear nerves preservation and ataxia. 843 abstracts and titles were reviewed and 10 studies (two non-randomized comparative studies and 8 non-comparative case series) were included for data extraction. Because of the heterogeneity of the studies, small number of participants and methodological shortcomings, findings were evaluated qualitatively. No impressive advantage was found in surgical or neurological outcomes for use of the sitting or lateral positions in patients with acoustic neuroma surgery. According to the available evidence, it seems that both sitting and lateral positions can be used with an equivalent safety for acoustic neuroma surgery via the retrosigmoid suboccipital approach. There seems a clear need for comparative studies to compare harms and other outcomes for these two positions.

Keywords: Acoustic neuroma; complications; retrosigmoid approach; vestibular schwannoma

Conflict of interest statement

There are no conflicts of interest.

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