{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T17:30:50Z","timestamp":1790271050667,"version":"4.1.0"},"reference-count":50,"publisher":"Hamad bin Khalifa University Press (HBKU Press)","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,7,16]]},"abstract":"<jats:p>Background: Spontaneous subarachnoid hemorrhage (SAH) is one of the significant etiologies for stroke. SAH causes higher morbidity and mortality with loss of productivity, resulting in increased disease burden. Only few studies in Qatar have reported on SAH, and the epidemiological features of SAH and aneurysmal SAH (aSAH) have not been comprehensively studied before in Qatar. Our study aimed to describe the epidemiological profile of patients with SAH and aSAH in the State of Qatar.<\/jats:p>\n                  <jats:p>\n                    Methods: We reviewed the medical records of all patients with SAH and\/or ruptured aneurysm who were consecutively admitted to Hamad General Hospital (600-bed tertiary care facility) from January 1, 2007 to December 31, 2016. We performed a quantitative analysis of demographics, clinical characteristics, diagnostic findings, interventions, and overall mortality. We used SPSS version 18 for data entry. We used chi-square and student t tests to compare the groups. We considered\n                    <jats:italic>p<\/jats:italic>\n                    \u00a0&lt;\u00a00.05 as statistically significant.\n                  <\/jats:p>\n                  <jats:p>Results: The study included 323 patients with aneurysmal and non-aneurysmal SAH. The mean age at presentation was 47.4\u00a0\u00b1\u00a012.2 years. Men comprised 68.7% of the cases. Further, 86.6% of the patients presented with acute-onset headache. Additionally, 217 patients had 1 aneurysm, and 32 patients had multiple aneurysms. Anterior communicating artery aneurysm has been found to be the most common aneurysm. Non-aneurysmal SAH occurred in 74 patients (22.9%), with male predominance. Moreover, 23.7% and 52.6% of the patients underwent microsurgical clipping and coiling of the aneurysm, respectively. The overall mortality in World Federation of Neurosurgeon Score (WFNS) grades 1 and 2 SAH was lesser than that in higher grades (28.6% vs 71.4%). Of 323 patients, 69 died within 1 month post-ictus, accounting for an overall mortality rate of 21.2% in our study.<\/jats:p>\n                  <jats:p>Conclusions: The annual incidence of aneurysmal SAH in Qatar has been increasing. Men had a higher incidence of aSAH. Internal carotid aneurysms have been found to be more common in Qatari women, which may have a genetic basis. Lower WFNS grades of aSAH have been associated with better prognosis. The overall mortality associated with aSAH in Qatar has declined over the last 3 years.<\/jats:p>","DOI":"10.5339\/qmj.2020.19","type":"journal-article","created":{"date-parts":[[2020,7,22]],"date-time":"2020-07-22T01:30:49Z","timestamp":1595381449000},"source":"Crossref","is-referenced-by-count":6,"title":["Epidemiology of spontaneous subarachnoid hemorrhage in the state of Qatar"],"prefix":"10.5339","volume":"2020","author":[{"given":"Dr Adnan","family":"Khan","sequence":"first","affiliation":[{"name":"Department of Neurosurgery: Neuroscience Institute: Hamad Medical Corporation Doha, Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dr Nissar","family":"Shaikh","sequence":"additional","affiliation":[{"name":"Surgical intensive care unit: Hamad Medical Corporation Doha, Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dr Mohsin","family":"Khan","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery: Neuroscience Institute: Hamad Medical Corporation Doha, Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dr Aisha","family":"Alkubaisi","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery: Neuroscience Institute: Hamad Medical Corporation Doha, Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"D Ghaya","family":"Al Rumaihi","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery: Neuroscience Institute: Hamad Medical Corporation Doha, Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dr Ghanem","family":"Al-Sulaiti","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery: Neuroscience Institute: Hamad Medical Corporation Doha, Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dr Ali","family":"Ayyad","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery: Neuroscience Institute: Hamad Medical Corporation Doha, Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"3277","reference":[{"key":"CIT0001","series-title":"Stroke Res Treat","first-page":"1","article-title":"Stroke in the century: a snapshot of the burden, epidemiology, and quality of life","volume":"2018","author":"Donkor\n\u00a0\nES","year":"2018"},{"key":"CIT0002","series-title":"Stroke","first-page":"2890","article-title":"Has outcome of subarachnoid hemorrhage changed with improvements in neurosurgical services?","volume":"49","author":"Dhandapani\n\u00a0\nS","year":"2018"},{"key":"CIT0003","series-title":"Neurology","first-page":"1413","article-title":"The burden, trends, and demographics of mortality from subarachnoid hemorrhage","volume":"50","author":"Johnston\n\u00a0\nSC","year":"1998"},{"key":"CIT0004","series-title":"Stroke","first-page":"1054","article-title":"A multinational comparison of subarachnoid hemorrhage epidemiology in the WHO MONICA stroke study","volume":"31","author":"Ingall\n\u00a0\nT","year":"2000"},{"key":"CIT0005","series-title":"ActaNeurochir (Wien)","first-page":"20","article-title":"Spontaneous subarachnoid haemorrhage and ruptured aneurysms in the middle east. A myth revisited","volume":"114","author":"Nogueira\n\u00a0\nGJ","year":"1992"},{"key":"CIT0006","series-title":"J Neurosurg Anesthesiol","first-page":"222","article-title":"Aneurysmal subarachnoid hemorrhage","volume":"27","author":"D'Souza\n\u00a0\nS","year":"2015"},{"key":"CIT0007"},{"key":"CIT0008","series-title":"BMJ Case Rep","first-page":"1","article-title":"Perimesencephalic non-aneurysmal subarachnoid haemorrhage","volume":"2018","author":"Osman\n\u00a0\nN","year":"2018"},{"key":"CIT0009","series-title":"J Neurol Neurosurg Psychiatry","first-page":"294","article-title":"Subarachnoid haemorrhage in Sweden 1987\u20132002: regional incidence and case fatality rates","volume":"79","author":"Koffijberg\n\u00a0\nH","year":"2008"},{"key":"CIT0010","series-title":"Stroke","first-page":"3166","article-title":"von und zu Fraunberg M","volume":"39","author":"van Munster\n\u00a0\nCE","year":"2008"},{"key":"CIT0011","series-title":"Quant Imaging Med Surg","first-page":"151","article-title":"A higher aneurysmal subarachnoid hemorrhage incidence in women prior to menopause: a retrospective analysis of 4,895 cases from eight hospitals in China","volume":"6","author":"W\u00e1ng\n\u00a0\nYX","year":"2016"},{"key":"CIT0012","series-title":"Neurol Sci","first-page":"S215","article-title":"Sentinel headache","volume":"25","author":"de Falco\n\u00a0\nFA","year":"2004"},{"key":"CIT0013","series-title":"Eur J Neurol","first-page":"1257","article-title":"Diagnosing headache in the emergency department: what is more important? Being right, or not being wrong?","volume":"15","author":"Edlow\n\u00a0\nJA","year":"2008"},{"key":"CIT0014","series-title":"Ann Emerg Med","first-page":"1199","article-title":"Recognition of subarachnoid hemorrhage","volume":"18","author":"Fontanarosa\n\u00a0\nPB","year":"1989"},{"key":"CIT0015","series-title":"Neurosurgery","first-page":"578","article-title":"Hypertens as a risk factor for epilepsy after aneurysmal subarachnoid hemorrhage and surgery","volume":"27","author":"Ohman\n\u00a0\nJ","year":"1990"},{"key":"CIT0016"},{"key":"CIT0017","series-title":"Neurosurgery","first-page":"900","article-title":"Determining the sensitivity of computed tomography scanning in early detection of subarachnoid hemorrhage","volume":"66","author":"Cortnum\n\u00a0\nS","year":"2010"},{"key":"CIT0018","series-title":"Lancet","first-page":"809","article-title":"International subarachnoid aneurysm trial (ISAT) of neurosurgical clipping versus endovascular coiling in 2143 patients with ruptured intracranial aneurysms: A randomised comparison of effects on survival, dependency, seizures, rebleeding, subgroups, and aneurysm occlusion","volume":"366","author":"Molyneux\n\u00a0\nAJ","year":"2005"},{"key":"CIT0019","series-title":"J Neurosurg","first-page":"609","article-title":"The barrow ruptured aneurysm trial: 6-year results","volume":"123","author":"Spetzler\n\u00a0\nRF","year":"2015"},{"key":"CIT0020","series-title":"J Neurosurg","first-page":"478","article-title":"The barrow ruptured aneurysm trial and international subarachnoid aneurysm trial","volume":"118","author":"Kerr\n\u00a0\nR","year":"2013"},{"key":"CIT0021","series-title":"Eur J Neurol","first-page":"1","article-title":"Non-aneurysmal subarachnoid hemorrhage in 173 patients: a prospective study of long-term outcome","volume":"0","author":"Konczalla\n\u00a0\nJ","year":"2015"},{"key":"CIT0022","series-title":"JAMA Neurol","first-page":"588","article-title":"Worldwide incidence of aneurysmal subarachnoid hemorrhage according to region, time period, blood pressure, and smoking prevalence in the population: A systematic review and meta-analysis","volume":"76","author":"Etminan\n\u00a0\nN","year":"2019"},{"key":"CIT0023","series-title":"Arquivos de Neuro-Psiquiatria","first-page":"806","article-title":"Aneurysmal subarachnoid hemorrhage: current concepts and updates","volume":"77","author":"Rouanet\n\u00a0\nC","year":"2019"},{"key":"CIT0024","series-title":"J Intensive Care","first-page":"28","article-title":"Aneurysmal subarachnoid hemorrhage: intensive care for improving neurological outcome","volume":"6","author":"Okazaki\n\u00a0\nT","year":"2018"},{"key":"CIT0025","series-title":"Front Neurol","first-page":"123","article-title":"Poor-grade aneurysmal subarachnoid hemorrhage: risk factors affecting clinical outcomes in intracranial aneurysm patients in a multi-center study","volume":"10","author":"Zheng\n\u00a0\nK","year":"2019"},{"key":"CIT0001","series-title":"Stroke Res Treat","first-page":"1","article-title":"Stroke in the century: a snapshot of the burden, epidemiology, and quality of life","volume":"2018","author":"Donkor\n\u00a0\nES","year":"2018"},{"key":"CIT0002","series-title":"Stroke","first-page":"2890","article-title":"Has outcome of subarachnoid hemorrhage changed with improvements in neurosurgical services?","volume":"49","author":"Dhandapani\n\u00a0\nS","year":"2018"},{"key":"CIT0003","series-title":"Neurology","first-page":"1413","article-title":"The burden, trends, and demographics of mortality from subarachnoid hemorrhage","volume":"50","author":"Johnston\n\u00a0\nSC","year":"1998"},{"key":"CIT0004","series-title":"Stroke","first-page":"1054","article-title":"A multinational comparison of subarachnoid hemorrhage epidemiology in the WHO MONICA stroke study","volume":"31","author":"Ingall\n\u00a0\nT","year":"2000"},{"key":"CIT0005","series-title":"ActaNeurochir (Wien)","first-page":"20","article-title":"Spontaneous subarachnoid haemorrhage and ruptured aneurysms in the middle east. A myth revisited","volume":"114","author":"Nogueira\n\u00a0\nGJ","year":"1992"},{"key":"CIT0006","series-title":"J Neurosurg Anesthesiol","first-page":"222","article-title":"Aneurysmal subarachnoid hemorrhage","volume":"27","author":"D'Souza\n\u00a0\nS","year":"2015"},{"key":"CIT0007"},{"key":"CIT0008","series-title":"BMJ Case Rep","first-page":"1","article-title":"Perimesencephalic non-aneurysmal subarachnoid haemorrhage","volume":"2018","author":"Osman\n\u00a0\nN","year":"2018"},{"key":"CIT0009","series-title":"J Neurol Neurosurg Psychiatry","first-page":"294","article-title":"Subarachnoid haemorrhage in Sweden 1987\u20132002: regional incidence and case fatality rates","volume":"79","author":"Koffijberg\n\u00a0\nH","year":"2008"},{"key":"CIT0010","series-title":"Stroke","first-page":"3166","article-title":"von und zu Fraunberg M","volume":"39","author":"van Munster\n\u00a0\nCE","year":"2008"},{"key":"CIT0011","series-title":"Quant Imaging Med Surg","first-page":"151","article-title":"A higher aneurysmal subarachnoid hemorrhage incidence in women prior to menopause: a retrospective analysis of 4,895 cases from eight hospitals in China","volume":"6","author":"W\u00e1ng\n\u00a0\nYX","year":"2016"},{"key":"CIT0012","series-title":"Neurol Sci","first-page":"S215","article-title":"Sentinel headache","volume":"25","author":"de Falco\n\u00a0\nFA","year":"2004"},{"key":"CIT0013","series-title":"Eur J Neurol","first-page":"1257","article-title":"Diagnosing headache in the emergency department: what is more important? Being right, or not being wrong?","volume":"15","author":"Edlow\n\u00a0\nJA","year":"2008"},{"key":"CIT0014","series-title":"Ann Emerg Med","first-page":"1199","article-title":"Recognition of subarachnoid hemorrhage","volume":"18","author":"Fontanarosa\n\u00a0\nPB","year":"1989"},{"key":"CIT0015","series-title":"Neurosurgery","first-page":"578","article-title":"Hypertens as a risk factor for epilepsy after aneurysmal subarachnoid hemorrhage and surgery","volume":"27","author":"Ohman\n\u00a0\nJ","year":"1990"},{"key":"CIT0016"},{"key":"CIT0017","series-title":"Neurosurgery","first-page":"900","article-title":"Determining the sensitivity of computed tomography scanning in early detection of subarachnoid hemorrhage","volume":"66","author":"Cortnum\n\u00a0\nS","year":"2010"},{"key":"CIT0018","series-title":"Lancet","first-page":"809","article-title":"International subarachnoid aneurysm trial (ISAT) of neurosurgical clipping versus endovascular coiling in 2143 patients with ruptured intracranial aneurysms: A randomised comparison of effects on survival, dependency, seizures, rebleeding, subgroups, and aneurysm occlusion","volume":"366","author":"Molyneux\n\u00a0\nAJ","year":"2005"},{"key":"CIT0019","series-title":"J Neurosurg","first-page":"609","article-title":"The barrow ruptured aneurysm trial: 6-year results","volume":"123","author":"Spetzler\n\u00a0\nRF","year":"2015"},{"key":"CIT0020","series-title":"J Neurosurg","first-page":"478","article-title":"The barrow ruptured aneurysm trial and international subarachnoid aneurysm trial","volume":"118","author":"Kerr\n\u00a0\nR","year":"2013"},{"key":"CIT0021","series-title":"Eur J Neurol","first-page":"1","article-title":"Non-aneurysmal subarachnoid hemorrhage in 173 patients: a prospective study of long-term outcome","volume":"0","author":"Konczalla\n\u00a0\nJ","year":"2015"},{"key":"CIT0022","series-title":"JAMA Neurol","first-page":"588","article-title":"Worldwide incidence of aneurysmal subarachnoid hemorrhage according to region, time period, blood pressure, and smoking prevalence in the population: A systematic review and meta-analysis","volume":"76","author":"Etminan\n\u00a0\nN","year":"2019"},{"key":"CIT0023","series-title":"Arquivos de Neuro-Psiquiatria","first-page":"806","article-title":"Aneurysmal subarachnoid hemorrhage: current concepts and updates","volume":"77","author":"Rouanet\n\u00a0\nC","year":"2019"},{"key":"CIT0024","series-title":"J Intensive Care","first-page":"28","article-title":"Aneurysmal subarachnoid hemorrhage: intensive care for improving neurological outcome","volume":"6","author":"Okazaki\n\u00a0\nT","year":"2018"},{"key":"CIT0025","series-title":"Front Neurol","first-page":"123","article-title":"Poor-grade aneurysmal subarachnoid hemorrhage: risk factors affecting clinical outcomes in intracranial aneurysm patients in a multi-center study","volume":"10","author":"Zheng\n\u00a0\nK","year":"2019"}],"container-title":["Qatar Medical Journal"],"original-title":[],"link":[{"URL":"https:\/\/www.qscience.com\/view\/journals\/qmj\/2020\/1\/article-19.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.qscience.com\/downloadpdf\/journals\/qmj\/2020\/1\/article-19.xml","content-type":"text\/html","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/www.qscience.com\/downloadpdf\/journals\/qmj\/2020\/1\/article-19.xml","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,27]],"date-time":"2026-04-27T17:20:37Z","timestamp":1777310437000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.qscience.com\/view\/journals\/qmj\/2020\/1\/article-19.xml"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,7,16]]},"references-count":50,"journal-issue":{"issue":"1"},"URL":"https:\/\/doi.org\/10.5339\/qmj.2020.19","relation":{},"ISSN":["2227-0426"],"issn-type":[{"value":"2227-0426","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,7,16]]}}}