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Aneurysmal Subarachnoid Hemorrhage: Geography has a Role

BACKGROUND: The incidence of aneurysmal subarachnoid hemorrhage (SAH) reported in the literature has been very variable. Many authors have proposed a geographical variation in incidence, but others have dismissed this as being due to insufficient pickup rate. In India also, these arguments abound. O...

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Autores principales: Ramnarayan, Ramachandran, Anto, Dominic, Alapatt, Jacob
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Medknow Publications & Media Pvt Ltd 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6159058/
https://www.ncbi.nlm.nih.gov/pubmed/30283524
http://dx.doi.org/10.4103/ajns.AJNS_301_16
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author Ramnarayan, Ramachandran
Anto, Dominic
Alapatt, Jacob
author_facet Ramnarayan, Ramachandran
Anto, Dominic
Alapatt, Jacob
author_sort Ramnarayan, Ramachandran
collection PubMed
description BACKGROUND: The incidence of aneurysmal subarachnoid hemorrhage (SAH) reported in the literature has been very variable. Many authors have proposed a geographical variation in incidence, but others have dismissed this as being due to insufficient pickup rate. In India also, these arguments abound. Our aim was to find out if geographical variations exist in the incidence of aneurysmal SAH and whether the incidence of aneurysmal SAH was truly less in India as compared to the literature. MATERIALS AND METHODS: The data from 182 consecutive cases of SAH admitted to this institution between March 1999 and July 2003 were used for this study. RESULTS: There were 84 females and 98 males in this study. More than half of the patients were hypertensive. Four-vessel angiogram was done in 113 patients, of whom sixty-nine were normal. Of the patients with hypertension, 92% had angiogram done and was normal in 65% of cases. CONCLUSIONS: This study from a large general hospital in South India shows that the incidence of aneurysmal rupture as a cause of SAH is much less in India and probably in the Indian subcontinent in comparison with the western literature thus demonstrating geographical variations in the incidence of aneurysmal SAH. It is concluded that aneurysms as a cause of SAH are still less in India and that we are not missing anything. This study is intended to help target scarce, expensive resources toward more common pathologies.
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spelling pubmed-61590582018-10-03 Aneurysmal Subarachnoid Hemorrhage: Geography has a Role Ramnarayan, Ramachandran Anto, Dominic Alapatt, Jacob Asian J Neurosurg Original Article BACKGROUND: The incidence of aneurysmal subarachnoid hemorrhage (SAH) reported in the literature has been very variable. Many authors have proposed a geographical variation in incidence, but others have dismissed this as being due to insufficient pickup rate. In India also, these arguments abound. Our aim was to find out if geographical variations exist in the incidence of aneurysmal SAH and whether the incidence of aneurysmal SAH was truly less in India as compared to the literature. MATERIALS AND METHODS: The data from 182 consecutive cases of SAH admitted to this institution between March 1999 and July 2003 were used for this study. RESULTS: There were 84 females and 98 males in this study. More than half of the patients were hypertensive. Four-vessel angiogram was done in 113 patients, of whom sixty-nine were normal. Of the patients with hypertension, 92% had angiogram done and was normal in 65% of cases. CONCLUSIONS: This study from a large general hospital in South India shows that the incidence of aneurysmal rupture as a cause of SAH is much less in India and probably in the Indian subcontinent in comparison with the western literature thus demonstrating geographical variations in the incidence of aneurysmal SAH. It is concluded that aneurysms as a cause of SAH are still less in India and that we are not missing anything. This study is intended to help target scarce, expensive resources toward more common pathologies. Medknow Publications & Media Pvt Ltd 2018 /pmc/articles/PMC6159058/ /pubmed/30283524 http://dx.doi.org/10.4103/ajns.AJNS_301_16 Text en Copyright: © 2018 Asian Journal of Neurosurgery http://creativecommons.org/licenses/by-nc-sa/4.0 This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.
spellingShingle Original Article
Ramnarayan, Ramachandran
Anto, Dominic
Alapatt, Jacob
Aneurysmal Subarachnoid Hemorrhage: Geography has a Role
title Aneurysmal Subarachnoid Hemorrhage: Geography has a Role
title_full Aneurysmal Subarachnoid Hemorrhage: Geography has a Role
title_fullStr Aneurysmal Subarachnoid Hemorrhage: Geography has a Role
title_full_unstemmed Aneurysmal Subarachnoid Hemorrhage: Geography has a Role
title_short Aneurysmal Subarachnoid Hemorrhage: Geography has a Role
title_sort aneurysmal subarachnoid hemorrhage: geography has a role
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6159058/
https://www.ncbi.nlm.nih.gov/pubmed/30283524
http://dx.doi.org/10.4103/ajns.AJNS_301_16
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