title: Spinal fluid dynamics during thoracic- and thoracoabdominal aortic surgery.
abstract: OBJECTIVE
  The intention was to investigate cerebrospinal fluid pressure (CSFP) and volume of cerebrospinal fluid (CSF) drained during and after thoracic- and thoracoabdominal aneurysm repair. The findings were related to the occurrence of postoperative neurologic deficits.
  
  
  METHODS
  Twenty-nine patients (12 with thoracic and 17 with thoracoabdominal aortic aneurysm) were operated without shunting or extracorporeal circulation. For monitoring of CSFP an intrathecal catheter was placed in all patients. The volume of CSF withdrawn intraoperatively, on the day of operation as well as on the 1st and 2nd postoperative day was recorded.
  
  
  RESULTS
  Twenty-six patients had no postoperative neurologic sequelae. One patient had postoperative paraplegia while 2 had paraparesis. The three patients with neurologic sequelae had higher CSFP intraoperatively than those without neurologic symptoms (P=0.04). Median CSFP during aortic cross-clamping was 19 mmHg and 10 mmHg and the median volumes of CSF drained on the day of operation 210 and 85 mL in the two groups, respectively. There was a significant positive correlation between CSFP and central venous pressure.
  
  
  CONCLUSIONS
  A higher intraoperative CSFP was observed in patients with neurologic sequelae following thoracic- and thoracoabdominal aneurysm repair. Further, there was a tendency of higher volumes of CSF drained in this group of patients. Although, the series is too small to allow firm conclusions, it supports the view that CSFP monitoring and drainage is beneficial during thoracic- and thoracoabdominal aneurysm repair.
authors.affiliation: Department of Surgery, St. Olavs Hospital, University Hospital of Trondheim, Trondheim, Norway.
authors.forename: T O
authors.initials: TO
authors.lastname: Eide
authors.forename: P
authors.initials: P
authors.lastname: Romundstad
authors.forename: R
authors.initials: R
authors.lastname: Stenseth
authors.forename: P
authors.initials: P
authors.lastname: Aadahl
authors.forename: H O
authors.initials: HO
authors.lastname: Myhre
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D017544:Aortic Aneurysm, Abdominal / Q000503:physiopathology* / Q000601:surgery*; D017545:Aortic Aneurysm, Thoracic / Q000503:physiopathology* / Q000601:surgery*; D001019:Aortic Rupture / Q000503:physiopathology / Q000601:surgery; D002496:Central Venous Pressure; D015170:Cerebrospinal Fluid Pressure; D005260:Female; D006801:Humans; D007362:Intensive Care Units; D007380:Intermediate Care Facilities; D007902:Length of Stay; D008297:Male; D008875:Middle Aged; D016896:Treatment Outcome; D014656:Vascular Surgical Procedures / Q000009:adverse effects