Preoperative predictive factors for surgical and functional outcomes in chronic subdural hematoma

Journal of Neurosurgery

et al. 2017

OBJECTIVE Chronic subdural hematoma (CSDH) is a common type of intracranial hemorrhage in elderly patients. Many studies have suggested various factors that may be associated with the recurrence of CSDH. However, the results are inconsistent. The purpose of this study was to determine the associations among patient factors, recurrence, and clinical outcomes of CSDH after bur hole surgery performed during an 11-year period at twin hospitals. METHODS Kaplan-Meier analysis was performed to evaluate the risk factors for CSDH recurrence. Univariate and multivariate Cox proportional hazards regression analyses were used to calculate hazard ratios with 95% CIs for CSDH recurrence based on many variables. One-way repeated-measures ANOVA was used to assess the differences in the mean modified Rankin Scale score between categories for each risk factor during each admission and at the last follow-up. RESULTS This study was a retrospective analysis of 756 consecutive patients with CSDH who underwent bur hole surgery at the Hanyang University Medical Center (Seoul and Guri) between January 1, 2004, and December 31, 2014. During the 6-month follow-up, 104 patients (13.8%) with recurrence after surgery for CSDH were identified. Independent risk factors for recurrence were as follows: age > 75 years (HR 1.72, 95% CI 1.03-2.88; p = 0.039), obesity (body mass index ≥ 25.0 kg/m), and a bilateral operation. CONCLUSIONS This study determined the risk factors for recurrence of CSDH and their effects on outcomes. Further studies are needed to account for these observations and to determine their underlying mechanisms.

Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Predictive factors for recurrence and clinical outcomes in patients with chronic subdural hematoma

Han

Ryu

Journal of Neurosurgery

et al. 2017

Journal of Neurosurgery

“…9,39,41 On an institutional level, practices vary from performing no routine CT scan and only clinical monitoring of neurological symptoms to performing as many as 4 routine scans in the first 3 months after surgery. 22,29,30,40,43 Surveys carried out in the United Kingdom, Ireland, and France indicate that between one-third and two-thirds of surgeons order routine scans. 27,33 Systematic scanning of all CSDH patients has been recommended by one study, since certain radiological findings, such as the persistence of midline shift, have been found to predict hematoma recurrence.…”

mentioning

confidence: 99%

International practice variation in postoperative imaging of chronic subdural hematoma patients

Hulsbergen

Yan

Stopa

et al. 2019

OBJECTIVEThe value of CT scanning after burr hole surgery in chronic subdural hematoma (CSDH) patients is unclear, and practice differs between countries. At the Brigham and Women’s Hospital (BWH) in Boston, Massachusetts, neurosurgeons frequently order routine postoperative CT scans, while the University Medical Center Utrecht (UMCU) in the Netherlands does not have this policy. The aim of this study was to compare the use of postoperative CT scans in CSDH patients between these hospitals and to evaluate whether there are differences in clinical outcomes.METHODSThe authors collected data from both centers for 391 age- and sex-matched CSDH patients treated with burr hole surgery between January 1, 2002, and July 1, 2016, and compared the number of postoperative scans up to 6 weeks after surgery, the need for re-intervention, and postoperative neurological condition.RESULTSBWH patients were postoperatively scanned a median of 4 times (interquartile range [IQR] 2–5), whereas UMCU patients underwent a median of 0 scans (IQR 0–1, p < 0.001). There was no significant difference in the number of re-operations (20 in the BWH vs 27 in the UMCU, p = 0.34). All re-interventions were preceded by clinical decline and no recurrences were detected on scans performed on asymptomatic patients. Patients’ neurological condition was not worse in the UMCU than in the BWH (p = 0.43).CONCLUSIONSWhile BWH patients underwent more scans than UMCU patients, there were no differences in clinical outcomes. The results of this study suggest that there is little benefit to routine scanning in asymptomatic patients who have undergone surgical treatment of uncomplicated CSDH and highlight opportunities to make practice more efficient.

“…Fukuhara et al5) reported that brain surface elasticity is an important factor in CSDH. Ro et al14) reported correlation of old age and poor outcome due to brain expansion. In our study, age was not significantly correlated with outcome at discharge and the final follow-up.…”

Section: Discussionmentioning

confidence: 99%

Correlation between Head Trauma and Outcome of Chronic Subdural Hematoma

Park

et al. 2016

Korean J Neurotrauma

ObjectiveOur study examined the prognostic factors involved in the outcome of patients with chronic subdural hematoma (CSDH) who had undergone burr hole drainage procedures, and investigated the association between outcome and traumatic head injury. In addition, we explored factors related to recurrence.MethodsThis study enrolled 238 patients with CSDH who had undergone burr hole drainage. Patients with history of head injury were categorized into the head trauma group and were compared with the no head trauma group. Outcome was considered good when modified Rankin Scale scores improved from admission to discharge and the final follow-up.ResultsAmong 238 patients, 127 (53.4%) were included in the head trauma group. One hundred thirty-three (55.9%) patients demonstrated good outcome at discharge, and 171 (71.8%) patients demonstrated good outcome at the final follow-up. None of the factors examined was significantly correlated with good outcome at discharge. However, only history of head injury (p=0.033, odds ratio 0.511, 95% confidence interval 0.277-0.946) was significantly correlated with poor outcome at long-term follow-up. Recurrence occurred in 20 (8.4%) cases in the total cohort and 11 (55%) patients in the head trauma group.ConclusionHistory of head trauma is correlated with poor outcome at long-term follow-up in CSDH patients having undergone burr hole drainage. Therefore, CSDH patients with history of head injury are susceptible to poor outcome, warranting more careful evaluation and treatment after burr hole drainage.