{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,30]],"date-time":"2025-10-30T11:19:20Z","timestamp":1761823160446},"reference-count":64,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[1977,9]]},"abstract":"<jats:p content-type=\"fine-print\">\u2713 The authors have analyzed a total of 96 consecutive cases in which vasospasm followed subarachnoid hemorrhage (SAH). The SAH was caused by ruptured intracranial aneurysm or developed after aneurysm surgery. Usually at least 4 days elapsed between SAH and the onset of vasospasm. Vasospasm subsided an average of 2 weeks after onset. Of 68 patients with preoperative vasospasm, eight died due to cerebral edema resulting from ischemia, and 49% of the survivors had neurological deficits. Preoperative vasospasm was not aggravated by surgical intervention when operations were carried out more than 7 days after the onset of vasospasm. Postoperative vasospasm was found in 25 of 52 patients who underwent operation within 1 week after SAH (excluding cases in Grade V). Five of these patients died, all of whom underwent surgery between the fourth and seventh day after SAH (the day of SAH was counted as the first day). There were no deaths among 20 patients operated on within the first 3 days after SAH. Postoperative vasospasm was always mild in these cases, when it occurred, probably because blood clot or blood-stained cerebrospinal fluid was removed by operative procedures. In all cases, 4 to 11 days elapsed between the last SAH and the onset of postoperative vasospasm regardless of the timing of surgery.<\/jats:p>","DOI":"10.3171\/jns.1977.47.3.0412","type":"journal-article","created":{"date-parts":[[2009,5,7]],"date-time":"2009-05-07T15:18:00Z","timestamp":1241709480000},"page":"412-429","source":"Crossref","is-referenced-by-count":162,"title":["Significance of vasospasm in the treatment of ruptured intracranial aneurysms"],"prefix":"10.3171","volume":"47","author":[{"given":"Isamu","family":"Saito","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yasuichi","family":"Ueda","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Keiji","family":"Sano","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1754","reference":[{"key":"b1","series-title":"J Neurosurg","doi-asserted-by":"publisher","first-page":"440","DOI":"10.3171\/jns.1974.41.4.0440","article-title":"Experimental catecholamine-induced chronic cerebral vasospasm. 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