Treatment of Subdural Hematoma: Comparative Analysis between Subdural Drainage with Negative Pressure versus other Drainages

Abstract

Report the recurrence rate of negative pressure subdural drainage (NPSD) versus to other kind of drains (OD). Design and Methods: A study was conducted cross-sectional and we retrospectively analyzed on the database of the neurosurgical service and we looked for all surgical procedures recorded from January 2006 to December 2015. Procedures with preoperative diagnosis of subdural hematoma (SDH) were selected, with a to- tal of 364 interventions, were excluded patients with postoperative diagnosis different from SDH and eliminated those who did not have complete data, recurrence was identified, a statistical analysis was performed describing frequency measurements percentage and standard deviation, RM and chi- square was obtained by software EPIDAT 3.1. 277 surgeries were performed in 230 patients, The population was divided into two groups: the first those interventions with negative pressure subdural drainage versus a second group with other different drains, and finally we compared the recurrence rate in each group, 44 surgeries had recurrence of SDH. The proportion of recurrence was found 16 % of the surgeries, 16 % (n=7) of these were performed with negative pressure subdural drainage and the remaining 84 % (n=37) by other drainage. The reason for prevalence found was 0.36 (95 % CI , 0.15 to 0.85), with statistically significant differences (p = 0.0165). The chi-square was 5.75 for the SDH with NPSD. It was found that patients treated with NPSD have a lower risk of recurrence compared with OD, which acts as a protective factor for patients treated with this type of drain, this is statistically significant.