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Hyponatremia and cerebrovascular spasm in aneurysmal subarachnoid hemorrhage
| Content Provider | Scilit |
|---|---|
| Author | Chandy, Dipak Sy, Roger Lee, Wei-Nchih Maguire, George Murali, Raj Aronow, WilbertS |
| Copyright Year | 2006 |
| Abstract | Background: Hyponatremia develops in approximately a third of patients with aneurysmal subarachnoid hemorrhage (SAH). Studies have been conflicting about the association between hyponatremia and cerebrovascular spasm (CVS). Aims: To investigate whether hyponatremia can signal the onset of CVS. Settings and Design: Retrospective chart review of all patients with SAH treated at a tertiary-care university hospital from January to May 2002. Materials and Methods: 106 patients were included in the study. Serum sodium levels were recorded from days 1 to 14 of hospitalization. Hyponatremia was defined as serum sodium level 4 meq/l from the admission sodium level. The presence of CVS was determined by transcranial doppler sonography. Patients were assigned to one of four groups based on the presence or absence of CVS and hyponatremia. Statistical Analysis: Student's t-test was used for comparison of means. A logistical regression model was constructed and odds ratios (OR) were calculated. Results: 41 patients developed hyponatremia and 44 developed CVS. Among the 41 with hyponatremia, 22 (54%) had evidence of CVS, whereas among the 65 patients without hyponatremia, 22 (34%) had evidence of CVS ( P =0.023). Among those with hyponatremia, the mean sodium drop was 7.9 meq/L in those with CVS compared to 7.0 meq/L in those without CVS ( P = 0.068). More than half of those with hyponatremia and CVS (13/22) developed hyponatremia at least a day before CVS was diagnosed. Conclusion: In patients with SAH, hyponatremia is associated with a significantly greater risk of developing CVS and may precede CVS by at least one day. |
| Related Links | http://www.neurologyindia.com/article.asp?issn=0028-3886;year=2006;volume=54;issue=3;spage=273;epage=275;aulast=Chandy;type=2 |
| Ending Page | 275 |
| Page Count | 3 |
| Starting Page | 273 |
| File Format | XHTML |
| ISSN | 00283886 |
| e-ISSN | 19984022 |
| DOI | 10.4103/0028-3886.27151 |
| Journal | Neurology India |
| Issue Number | 3 |
| Volume Number | 54 |
| Language | English |
| Publisher | Medknow |
| Publisher Date | 2006-01-01 |
| Access Restriction | Open |
| Subject Keyword | Nursing Sodium Hospitalization Hemorrhage Subarachnoid Hyponatremia Cerebrovascular Spasm Aneurysmal Patients with Sah Neurology India, Volume 54, Issue 3 |
| Content Type | Text |
| Resource Type | Article |
| Subject | Neurology Neurology (clinical) |
