title: Complications after angiogram-negative subarachnoid haemorrhage: comparative study of pretruncal and nonpretruncal hemorrhage patients.
abstract: BACKGROUND
  Subarachnoid haemorrhages (SAH) of unknown aetiology usually have a mild clinical presentation, favourable outcome and low complication rate.
  
  
  OBJECTIVE
  The aim of this study was to analyse the complications in two forms of angiogram-negative spontaneous SAH: pretruncal (PNSAH) and nonpretruncal (NPNSAH).
  
  
  METHODS
  The study group involved 18 patients with PNSAH and 16 patients with NPNSAH. CT scan was done within 72 hours from bleeding. All patients underwent four-vessel cerebral angiography. Repeat angiography was performed in five PNSAH and all NPNSAH patients.
  
  
  RESULTS
  Twenty-nine patients were in grade I or II of the Hunt-Hess Scale (17 PNSAH and 12 NPNSAH). There was one case of rebleeding (NPNSAH patient), 10 cases of transient acute hydrocephalus (4 PNSAH and 6 NPNSAH). Cerebral vasospasm visualized by angiographies in two NPNSAH patients was local and mild, but was not found in PNSAH patients. Acute electrocardiography changes were found in 19 patients (significantly more frequently in NPNSAH than in PNSAH, 12 and 7 patients, respectively; p = 0.037).
  
  
  CONCLUSIONS
  Cardiac problems following these types of SAH are more frequent than expected, and therefore cardiac monitoring is necessary.
authors.affiliation: Clinic for Neurosurgery, Clinical Centre of Nis, Nis, Serbia. aleko018@yahoo.co.uk
authors.forename: Aleksandar
authors.initials: A
authors.lastname: Kostić
authors.forename: Dragan
authors.initials: D
authors.lastname: Stojanov
authors.forename: Ivan
authors.initials: I
authors.lastname: Stefanović
authors.forename: Vesna
authors.initials: V
authors.lastname: Novak
authors.forename: Emina
authors.initials: E
authors.lastname: Kostić
authors.forename: Daniela
authors.initials: D
authors.lastname: Benedeto-Stojanov
authors.forename: Veselinović
authors.initials: V
authors.lastname: Dragan
mesh_terms: D000328:Adult; D000368:Aged; D001145:Arrhythmias, Cardiac / Q000209:etiology; D002533:Cerebral Angiography; D005260:Female; D006801:Humans; D006849:Hydrocephalus / Q000209:etiology; D008297:Male; D008875:Middle Aged; D012008:Recurrence; D013345:Subarachnoid Hemorrhage / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology; D014883:Water-Electrolyte Imbalance / Q000209:etiology; D055815:Young Adult