BACKGROUND: The optimal management of @entity6087 remains a challenge. Twist drill craniotomy or burr hole trephination are considered optimal initial treatments, but the reoperation rate for @entity1410 recurrence and other complications is still high. Therefore, evaluation of possible risk factors for initial treatment failure is crucial. In this context, we performed a study to define a possible subpopulation that may benefit from a more invasive initial treatment regime. METHODS: We retrospectively reviewed the medical charts of 193 @entity1 with 250 @entity6087 who had undergone burr hole trephination as first-line therapy in our institution between January 2005 and October 2012. To identify risk factors for reoperation, a multivariable logistic regression analysis was performed with reoperation as the dependent variable. @entity532 , including acute rebleeding, infection and chronic @entity1410 recurrence, were analyzed separately using a logistic regression model. RESULTS: The mean age of the cohort was 71.4 years. The male/female ratio was 137:56. Reoperation was necessary in 56 cases (29%) for recurrent @entity532 . Predictors for reoperation for surgical complications were midline shift (odds ratio [OR] (per mm) 1.16, 95% confidence interval [CI]: 1.05-1.29, p=0.006), arterial @entity101 (OR 5.44, 95% CI: 1.45-20.41, p=0.012) and bilateral @entity1410 (OR 4.22, 95% CI: 1.22-14.58, p=0.023). There was a trend toward a higher risk of surgically-relevant @entity1410 recurrence in @entity1 with prior treatment with @entity2067 antagonists (OR 1.76, 95% CI: 0.75-4.13, p=0.191). CONCLUSION: Burr hole trephination is the therapy of choice in most @entity6087 , but the rate of recurrent @entity1410 is high. Every @entity1410 should be treated individually especially in relation to midline-shift and pre-existing conditions. Further prospective studies evaluating types of treatment and @entity1410 density are needed.

Risk factors for reoperation after initial burr hole XXXX .

@entity1 :: ('9606', 'Species') :: ['patients'] @entity101 :: ('MESH:D006973', 'Disease') :: ['hypertension'] @entity2067 :: ('MESH:D014812', 'Chemical') :: ['vitamin K'] @entity532 :: ('MESH:D003925', 'Disease') :: ['Surgical complications', 'hematomas and surgical complications'] @entity6087 :: ('MESH:D020200', 'Disease') :: ['chronic subdural hematomas'] @entity1410 :: ('MESH:D006406', 'Disease') :: ['hematomas', 'hematoma']
@entity6087 :: (MESH:D020200,Disease) :: ['trephination in chronic subdural hematomas']
