Burr Hole Irrigation of Hematoma Cavity with and without Drainage in the Treatment of Chronic Subdural Hematoma: A Comparative Study

Background: A chronic subdural hematoma (CSDH) is an old collection of blood and blood breakdown products between the surface of the brain and its outermost covering the dura. The chronic phase of a subdural hematoma begins several weeks after the first bleeding. It has long been recognized that the elderly are more likely to develop a subdural hematoma, particularly from minor trauma. CSDH s have been evacuated by craniotomies, burr holes, and twist-drill craniotomies. Aim: To investigate the effect of drains, used in burr hole irrigations, on recurrence rates of CSDH and its clinical outcomes. Results and Observation: 60 patients of CSDH were included in the study out of which 32 underwent burr hole with closed system drainage and 28 were underwent burr hole without closed system drainage and both were nominated by Groups A and B, respectively. 14 (23%) had shown recurrence of CSDH. Out of 14 patients, 8 belongs to Group B (28%) and 6 belongs to Group A (18%) with P value of 0.369. Conclusion: Thus, it can be concluded that Group A, i.e., group where patients underwent burr hole with drain, has comparatively low recurrence rate than Group B, i.e., where patients underwent burr hole without drain.