Evacuation Of Hemorrhage Research Articles

Abstract TP131: Association Of Hemoglobin Over The First Week With Clinical Outcomes And Neuroimaging Characteristics In Patients With Spontaneous Intracerebral Hemorrhage

Introduction: Studies have shown independent associations of lower admission hemoglobin (HB) levels with larger spontaneous intracerebral hemorrhage (ICH) volumes and poor outcomes, possibly mediated by hematoma expansion (HE). Objective: We retrospectively investigated the association of HB levels over the first week post ICH with functional outcomes (FO) and neuroimaging findings in patients with spontaneous ICH (>30 mL). We explored whether comorbidities modify the effects of HB. Methods: We analyzed HB levels from subjects enrolled in the Minimally Invasive Surgery Plus Alteplase for Intracerebral Hemorrhage Evacuation phase 3 trial (MISTIE III). The exposure was admission HB and the HB nadir in the first week. The primary outcome was good FO at 180 days, defined as modified Rankin Scale of 0-3. Secondary outcomes were good FO at 365 days, 30-day mortality, admission ICH volume, and HE (>6 mL). Linear and logistic regression models were used to test the association of HB with clinical outcomes and neuroimaging findings. All models were adjusted for age, sex, race, treatment (medical Vs. MISTIE), Glasgow Coma Scale, ICH volume, presence of intraventricular hemorrhage, and ICH location (deep Vs. lobar). We investigated effect modification of comorbidities on association of HB with FO. Results: A total of 493 of 499 enrolled patients (61% males, mean age 61(SD=12) years, median ICH volume 41.8 (IQR=30.8-51.5) mL) were included. Patients with good FO at 180 days had a higher admission HB (13.2 Vs. 12.6 g/dl, p=0.001) and a higher nadir HB (11.7 Vs. 10.9 g/dl, p<0.001). In adjusted analyses, each additional g/dl in nadir HB (but not admission HB) was associated with higher odds of good FO at 180 (OR 1.29, p=0.005) and 365 (OR 1.18, P=0.048) days. Baseline (B= -1.16, p=0.02) and nadir HB (B= -1.71, p=0.001) were inversely associated with hematoma volumes, but not with HE. There was evidence of heterogeneity in the effects of diabetes on the association of nadir HB with day 180 FO (OR 0.67; p interaction = 0.045). Conclusions: In patients with ICH > 30 mL, higher nadir HB in the first week was associated with better long-term FO and smaller ICH volumes, but not with HE. Early hemoglobin changes may serve as a prognostic biomarker and a potentially modifiable factor to improve FO.

Early Minimally Invasive Parafascicular Surgery for Evacuation of Spontaneous Intracerebral Hemorrhage in the Setting of Computed Tomography Angiography Spot Sign: A Case Series.

Spontaneous intracerebral hemorrhage (sICH) is associated with high morbidity and mortality, and the role of surgery is uncertain. Spot sign on computed tomography angiography (CTA) has previously been seen as a contraindication for minimally invasive techniques. To demonstrate the use of minimally invasive parafascicular surgery (MIPS) for early evacuation of sICH in patients with spot sign on CTA. Retrospective review of patients presenting to a US tertiary academic medical center from 2018 to 2020 with sICH and CTA spot sign who were treated with MIPS within 6 h of arrival. Seven patients (6 men and 1 woman, mean age 54.4 yr) were included in this study. There was a significant decrease between preoperative and postoperative intracerebral hemorrhage volumes (75.03 ± 39.00 cm3 vs 19.48 ± 17.81 cm3, P = .005) and intracerebral hemorrhage score (3.1 ± 0.9 vs 1.9 ± 0.9, P = .020). The mean time from arrival to surgery was 3.72 h (±1.22 h). The mean percentage of hematoma evacuation was 73.78% (±21.11%). The in-hospital mortality was 14.29%, and the mean modified Rankin score at discharge was 4.6 (±1.3). No complications related to the surgery were encountered in any of the cases, with no abnormal intraoperative bleeding and no pathology demonstrating occult vascular lesion. Early intervention with MIPS appears to be a safe and effective means of hematoma evacuation despite the presence of CTA spot sign, and this finding should not delay early intervention when indicated. Intraoperative hemostasis may be facilitated by the direct visualization provided by a tubular retractor system.

Seizures in a Term Newborn.

Seizures in a Term Newborn.

Case Report: Case report: Administration of anticoagulant therapy after neuro-anesthesia procedure for hemorrhagic stroke patients with COVID-19 complications and its ethical and medicolegal consideration

Background: Ethical dilemmas can occur in any situation in clinical medicine. In patients undergoing neuro-anesthesia for surgical procedure evacuation of intracerebral hemorrhage with a history of hemorrhagic stroke, anticoagulants should not be given because they can cause recurrent bleeding. Meanwhile, at the same time, the patient could also be infected with coronavirus disease 2019 (COVID-19), one of treatment is the administration of anticoagulants. Methods: A case report. A 46-year-old male patient was admitted to hospital with a loss of consciousness and was diagnosed with intracerebral hemorrhage due to a hemorrhagic stroke and was confirmed positive for COVID-19. Giving anticoagulants to patients is considered counterproductive so, an ethical dilemma arises. For this reason, a joint conference was held to obtain the best ethical and medicolegal solutions for the patient. Results: By using several methods of resolving ethical dilemmas such as basic ethical principles, supporting ethical principles, and medicolegal considerations, it was decided that the patient was not to be given anticoagulants. Conclusions: Giving anticoagulants to hemorrhagic stroke patients is dangerous even though it is beneficial for COVID-19 patients, so here the principle of risk-benefit balance is applied to patients who prioritize risk prevention rather than providing benefits. This is also supported by the prima facie principle by prioritizing the principle of non-maleficence rather than beneficence, the minus malum principle by seeking the lowest risk, and the double effect principle by making the best decision even in a slightly less favorable way as well as the medicolegal aspect by assessing patient safety and risk management.

Cerebral Microbleeds and Acute Hematoma Characteristics in the ATACH-2 and MISTIE III Trials.

To study the relationship between the presence of cerebral microbleeds (CMBs) and acute hematoma characteristics among patients with primary intracerebral hemorrhage (ICH). We pooled individual patient data from the Antihypertensive Treatment of Acute Cerebral Hemorrhage 2 (ATACH-2) trial and the Minimally Invasive Surgery Plus Alteplase for Intracerebral Hemorrhage Evacuation phase 3 (MISTIE III) trial. We included individuals with a brain MRI scan. Exposure was the presence of a CMB. The coprimary outcomes were admission ICH volume and hematoma expansion. Mixed-effects linear and logistic regression models were used, with demographics and comorbid conditions considered fixed effects and the study cohort treated as a random effect. Additional analyses assessed the relationship between CMB topography and number and hematoma characteristics. Of the 1,499 patients with ICH enrolled in the parent trials, 466 (31.1%) were included in this analysis, and 231 (49.6%) patients had CMBs. In adjusted models, presence of CMBs was associated with smaller ICH volume (β = -0.26, 95% confidence interval [CI] -0.44 to -0.08) and lower odds of hematoma expansion (odds ratio 0.65, 95% CI 0.40-0.95; p = 0.04). The strength of association between CMBs and hematoma characteristics increased with increasing number of CMBs. The location of the CMBs and the severity of leukoaraiosis did not modify these results. In a pooled cohort of patients with ICH, our results are consistent with the hypothesis that more severe underlying small vessel disease, as represented by CMBs, leads to smaller baseline hematoma volumes and reduced hematoma expansion. Underlying cerebral small vessel disease may be of prognostic significance after ICH. ClinicalTrials.gov Identifier: NCT01176565 and NCT01827046. This study provides Class II evidence that the presence of microbleeds on MRI is associated with a smaller ICH volume at presentation and a lower rate of hematoma expansion on follow-up imaging.

Minimally Invasive Endoscopic Intracerebral Hemorrhage Evacuation

Intracerebral hemorrhage (ICH) is a subtype of stroke with high mortality and poor functional outcomes, largely because there are no evidence-based treatment options for this devastating disease process. In the past decade, a number of minimally invasive surgeries have emerged to address this issue, one of which is endoscopic evacuation. Stereotactic ICH Underwater Blood Aspiration (SCUBA) is a novel endoscopic evacuation technique performed in a fluid-filled cavity using an aspiration system to provide an additional degree of freedom during the procedure. The SCUBA procedure utilizes a suction device, endoscope, and sheath and is divided into two phases. The first phase involves maximal aspiration and minimal irrigation to decrease clot burden. The second phase involves increasing irrigation for visibility, decreasing aspiration strength for targeted aspiration without disturbing the cavity wall, and cauterizing any bleeding vessels. Using the endoscope and aspiration wand, this technique aims to maximize hematoma evacuation while minimizing collateral damage to the surrounding brain. Advantages of the SCUBA technique include the use of a low-profile endoscopic sheath minimizing brain disruption and improved visualization with a fluid-filled cavity rather than an air-filled one.

Minimally Invasive Endoscopic Intracerebral Hemorrhage Evacuation

Intracerebral hemorrhage (ICH) is a subtype of stroke with high mortality and poor functional outcomes, largely because there are no evidence-based treatment options for this devastating disease process. In the past decade, a number of minimally invasive surgeries have emerged to address this issue, one of which is endoscopic evacuation. Stereotactic ICH Underwater Blood Aspiration (SCUBA) is a novel endoscopic evacuation technique performed in a fluid-filled cavity using an aspiration system to provide an additional degree of freedom during the procedure. The SCUBA procedure utilizes a suction device, endoscope, and sheath and is divided into two phases. The first phase involves maximal aspiration and minimal irrigation to decrease clot burden. The second phase involves increasing irrigation for visibility, decreasing aspiration strength for targeted aspiration without disturbing the cavity wall, and cauterizing any bleeding vessels. Using the endoscope and aspiration wand, this technique aims to maximize hematoma evacuation while minimizing collateral damage to the surrounding brain. Advantages of the SCUBA technique include the use of a low-profile endoscopic sheath minimizing brain disruption and improved visualization with a fluid-filled cavity rather than an air-filled one.

Intracerebral haemorrhage (ICH) evacuation by minimally invasive neurosurgery (min) techniques

Intracerebral haemorrhage (ICH) evacuation by minimally invasive neurosurgery (min) techniques

Primary Brainstem Hemorrhage: A Review of Prognostic Factors and Surgical Management.

Primary brainstem hemorrhage (PBSH) is the most fatal subtype of intracerebral hemorrhage and is invariably associated with poor prognosis. Several prognostic factors are involved, of which the two most predominant and consistent are the initial level of consciousness and hemorrhage size. Other predictors, such as age, hyperthermia, and hydrocephalus, are generally not dependable indicators for making prognoses. Scoring systems have now been developed that can predict mortality and functional outcomes in patients suffering from PBSH, which can thus guide treatment decision-making. A novel grading scale, entitled “the new primary pontine hemorrhage (PPH) score,” represents the latest approach in scoring systems. In this system, patients with a score of 2–3 points appear to benefit from surgical management, although this claim requires further verification. The four main surgical options for the treatment of PBSH are craniotomy, stereotactic hematoma puncture and drainage, endoscopic hematoma removal, and external ventricular drainage. Nevertheless, the management of PBSH still primarily involves conservative treatment methods and surgery is generally not recommended, according to current practice. However, the ongoing clinical trial, entitled Safety and Efficacy of Surgical Treatment in Severe Primary Pontine Hemorrhage Evacuation (STIPE), should provide additional evidence to support the surgical treatment of PBSH. Therefore, we advocate the update of epidemiological data and re-evaluation of PBSH treatment in a contemporary context.

A-52 Evolving Cognitive and Neuropsychiatric Sequelae of Ruptured Arteriovenous Malformation Following Neurosurgical Intervention

Abstract Objective Arteriovenous malformations (AVMs) are tangled masses of arteries and veins of congenital origin. AVMs are rare (~4.3% in the general population) and symptomatic cases are rarer still (0.1–1%). AVMs account for strokes in 1–2% of cases. We present the case of a 59-year-old, right-handed, Caucasian male, with nine years of formal education, who was evaluated as an inpatient following a ruptured AVM. Method Patient with known history of AVM (Figure 1) presented with headache and new onset seizure. Computerized tomography (CT) revealed rupture of an AVM at the right temporal-occipital junction, with resulting intraparenchymal hemorrhage within the right parieto-occipital lobe and the right ventricular system and 0.8 cm left midline shift (Figure 2). The patient underwent emergency craniotomy for evacuation of intracerebral hematoma, resection of AVM, and placement of right external ventricular drain (EVD). Electroencephalograom (EEG) revealed focal cortical dysfunction over the right hemisphere and moderate encephalopathy. Results (Table 1). Neuropsychological evaluation six days following emergency craniotomy revealed primary impairment in visuoperceptual and visuoconstructional skills (including left neglect; Figures 3 & 4), impairments in working memory, learning/memory of verbal information (with intact recognition), as well as impairment in aspects of language (semantic fluency). These were accompanied by dense anosagnosia pertaining to cognitive deficits, but intact insight related to his hospitalization. Conclusions This is a rare case of symptomatic AVM with neuropsychological evaluation data highlighting the associated evolving cognitive (e.g., left neglect and visuoperceptual disturbance) and neuropsychiatric deficits (e.g., dense anosagnosia) in the context of recent neurosurgical interventions (e.g., evacuation of hemorrhage, placement of EVD, etc.).

Intracranial Pressure and Cerebral Perfusion Pressure in Large Spontaneous Intracranial Hemorrhage and Impact of Minimally Invasive Surgery

Introduction: We investigated the effect of hematoma volume reduction with minimally invasive surgery (MIS) on intracranial pressure (ICP) and cerebral perfusion pressure (CPP) in patients with large spontaneous intracerebral hemorrhage (ICH).Methods:Post-hoc analysis of the Minimally Invasive Surgery Plus Alteplase for Intracerebral Hemorrhage Evacuation (MISTIE III) study, a clinical trial with blinded outcome assessments. The primary outcome was the proportion of ICP readings ≥20 and 30 mmHg, and CPP readings <70 and 60 mm Hg. Secondary outcomes included major disability (modified Rankin scale >3) and mortality at 30 and 365 days. We assessed the relationship between proportion of high ICP and low CPP events and MIS using binomial generalized linear models, and outcomes using multiple logistic regression.Results: Of 499 patients enrolled in MISTIE III, 72 patients had guideline based ICP monitors placed, 34 in the MIS group and 38 in control (no surgery) group. Threshold ICP and CPP events ≥20/ <70 mmHg occurred in 31 (43.1%) and 52 (72.2%) patients respectively. On adjusted analyses, proportion of ICP readings ≥20 and 30 mmHg were significantly lower in the MIS group vs. control group [Odds Ratio (OR) 0.27, 95% Confidence Interval [CI] 0.11–0.63 (p = 0.002); OR = 0.18, 0.04–0.75, p = 0.02], respectively. Proportion of CPP readings <70 and 60 mm Hg were also significantly lower in MIS patients [OR 0.31, 95% CI 0.15–0.63 (p = 0.001); OR 0.30, 95% CI 0.11–0.83 (p = 0.02)], respectively. Higher proportions of CPP readings <70 and 60 mm were significantly associated with short term mortality (p = 0.04), and (p = 0.006), respectively. Long term mortality was significantly associated with higher proportion of time with ICP ≥ 20 (p = 0.04), ICP ≥ 30 (p = 0.04), and CPP <70 mmHg (p = 0.01).Conclusion: Our results are consistent with the hypothesis that surgical reduction of ICH volume decreases proportion of high ICP and low CPP events and that these variables are associated with short- and long-term mortality.

Leukoencephalopathy With Calcifications and Cysts Associated With SNORD118 Variants.

A 67-year-old woman presented with gradually progressive gait impairment. Examination revealed left third nerve palsy, ataxia, and lower limb spasticity. Twenty-four years previously, hydrocephalus and multifocal cerebral cysts necessitated ventriculostomy and cyst biopsy (Figure 1), followed by foramen magnum decompression 2 years later and, after a further 4 years, cerebellar haemorrhage evacuation. Leukoencephalopathy with calcification and cysts, a rare, recently described autosomal ribosomopathy,1 was suspected at representation on the basis of neuroimaging (Figure 2). The diagnosis was confirmed following re-review of histopathology. Genetic screening detected a likely pathogenic variant in SNORD118 (n.*9C>T) and a variant of unknown significance (n.126C>T). Progressive, multifocal symptoms are characteristic.2

Post-Trial Enhanced Deployment and Technical Performance with the MISTIE Procedure per Lessons Learned

ObjectiveWe hypothesize that procedure deployment rates and technical performance with minimally invasive surgery and thrombolysis for intracerebral hemorrhage (ICH) evacuation (MISTIE) can be enhanced in post-trial clinical practice, per Phase III trial results and lessons learned. Materials and MethodsWe identified ICH patients and those who underwent MISTIE procedure between 2017–2021 at a single site, after completed enrollments in the Phase III trial. Deployment rates, complications and technical outcomes were compared to those observed in the trial. Initial and final hematoma volume were compared between site measurements using ABC/2, MISTIE trial reading center utilizing manual segmentation, and a novel Artificial Intelligence (AI) based volume assessment. ResultsNineteen of 286 patients were eligible for MISTIE. All 19 received the procedure (6.6% enrollment to screening rate 6.6% compared to 1.6% at our center in the trial; p=0.0018). Sixteen patients (84%) achieved evaculation target < 15 mL residual ICH or > 70% removal, compared to 59.7% in the trial surgical cohort (p=0.034). No poor catheter placement occurred and no surgical protocol deviations. Limitations of ICH volume assessments using the ABC/2 method were shown, while AI based methodology of ICH volume assessments had excellent correlation with manual segmentation by experienced reading centers. ConclusionsGreater procedure deployment and higher technical success rates can be achieved in post-trial clinical practice than in the MISTIE III trial. AI based measurements can be deployed to enhance clinician estimated ICH volume. Clinical outcome implications of this enhanced technical performance cannot be surmised, and will need assessment in future trials.

Recent Updates in Neurosurgical Interventions for Spontaneous Intracerebral Hemorrhage: Minimally Invasive Surgery to Improve Surgical Performance.

The efficacy and safety of surgical treatment for intracerebral hemorrhage (ICH) have long been subjects of investigation and debate. The recent results of the minimally invasive surgery plus alteplase for intracerebral hemorrhage evacuation (MISTIE) III trial demonstrated the safety of the procedure and a reduction in mortality compared to medical treatment. Although no improvement in functional outcomes was shown, the trial elucidated that benefits of intervention depend on surgical performance: a greater ICH reduction, defined as ≤ 15 mL end of treatment ICH volume or ≥70% volume reduction, correlated with significant functional improvement. Recent meta-analyses suggested the benefits of neurosurgical hematoma evacuation, especially when performed earlier and done using minimally invasive procedures. In MISTIE III, to confirm hemostasis and reduce the risk of rebleeding, the mean time from onset to surgery and treatment completion took 47 and 123 h, respectively. Theoretically, the earlier the hematoma is removed, the better the outcome. Therefore, a higher rate of hematoma reduction within an earlier time course may be beneficial. Neuroendoscopic surgery enables less invasive removal of ICH under direct visualization. Minimally invasive procedures have continued to evolve with the support of advanced guidance systems and devices in favor of better surgical performance. Ongoing randomized controlled trials utilizing emerging minimally invasive techniques, such as the Early Minimally Invasive Removal of Intra Cerebral Hemorrhage (ENRICH) trial, Minimally Invasive Endoscopic Surgical Treatment with Apollo/Artemis in Patients with Brain Hemorrhage (INVEST) trial, and the Dutch Intracerebral Hemorrhage Surgery Trial (DIST), may provide significant information on the optimal treatment for ICH.

A novel laser-based stereotactic localization device for intracranial mass resection

Unfortunately, both frame-based and frameless stereotactic neuronavigation platforms are far from ubiquitous in global neurosurgery, and many facilities lack accurate localization technology to ensure the safety of intracranial surgery such as cerebral hemorrhage evacuation. Based on the principle of stereoscopic geometry, this paper introduces a novel method of intracranial lesion localization using translational and rotational lasers in an external Cartesian coordinate system.

Surgical Evacuation of Intracerebral Hemorrhage: The Potential Importance of Timing.

Surgical Evacuation of Intracerebral Hemorrhage: The Potential Importance of Timing.

Time to Evacuation and Functional Outcome After Minimally Invasive Endoscopic Intracerebral Hemorrhage Evacuation.

We present a retrospective analysis of patients who underwent minimally invasive endoscopic intracerebral hemorrhage (ICH) evacuation to identify variables that were associated with long-term outcome. Minimally invasive endoscopic ICH evacuation was performed on patients with supratentorial ICH who fit prespecified clinical inclusion and exclusion criteria. Demographic, clinical, and radiographic factors previously demonstrated to impact functional outcome in ICH were included in a univariate analysis to identify factors associated with favorable outcome (modified Rankin Scale score, 0-3) at 6 months. Factors associated with a favorable outcome in the univariate analysis (P≤0.20) were included in a multivariate logistic regression analysis with the same dependent variable. Ninety patients underwent MIS endoscopic ICH evacuation within 72 hours of ictus. In a multivariate analysis, factors associated with good long-term functional outcome included time to evacuation (per hour; OR, 0.95 [95% CI, 0.92-0.98], P=0.004), age (per decade, odds ratio [OR], 0.49 [95% CI, 0.28-0.77], P=0.005), presence of intraventricular hemorrhage (OR, 0.15 [95% CI, 0.04-0.47], P=0.002), and lobar location (OR, 18.5 [95% CI, 4.5-103], P=0.0005). Early evacuation was not associated with an increased risk of rebleeding. Young age, lack of intraventricular hemorrhage, lobar location, and time to evacuation were independently associated with good long-term functional outcome in patients undergoing minimally invasive endoscopic ICH evacuation. The OR for time to evacuation suggests that for each additional hour, there was a 5% reduction in the odds of achieving a favorable outcome.

A Cost Utility Analysis of Minimally Invasive Surgery with Thrombolysis Compared to Standard Medical Treatment in Spontaneous Intracerebral Haemorrhagic Stroke

ObjectivesStandard medical management of spontaneous intracerebral haemorrhage (ICH) and surgical hematoma evacuation starkly differ, and whilst landmark randomised control trials report no clinical benefit of early surgical evacuation compared with medical treatment in supratentorial ICH, minimally invasive surgery (MIS) with thrombolysis has been neglected within these studies. However, recent technological advancements in MIS have renewed interest in the surgical treatment of ICH. Several economic evaluations have focused on the benefits of MIS in ischaemic stroke management, but no economic evaluations have yet been performed comparing MIS to standard medical treatment for ICH. Materials and MethodAll costs were sourced from the UK in GBP. Where possible, the 2019/2020 NHS reference costs were used. The MISTIE III study was used to analyse the outcomes of patients undergoing either MIS or standard medical treatment in this economic evaluation. ResultsThe incremental cost-effectiveness ratio (ICER) for MIS was £485,240.26 for every quality-adjusted life year (QALY) gained. Although MIS resulted in a higher QALY compared to medical treatment, the gain was insignificant at 0.011 QALY. Four sensitivity analyses based on combinations of alternative EQ-5D values and categorisation of MIS outcomes, alongside alterations to the cost of significant adverse events, were performed to check the robustness of the ICER calculation. The most realistic sensitivity analysis showed a potential increase in cost effectiveness when clot size is reduced to <15ml, with the ICER falling to £74,335.57. DiscussionFrom the perspective of the NHS, MIS with thrombolysis is not cost-effective compared to optimal medical treatment. ICER shows that intention-to-treat MIS would require a cost of £485,240.26 to gain one extra QALY, which is significantly above the NHS threshold of £30,000. Further UK studies with ICH survivor utilities, more replicable surgical technique, and the reporting of clot size reduction are indicated as the present sensitivity analysis suggests that MIS is promising. Greater detail about outcomes and complications would ensure improved cost-benefit analyses and support valid and efficient allocation of resources by the NHS.

When the Blood Hits Your Brain: The Neurotoxicity of Extravasated Blood.

Hemorrhage in the central nervous system (CNS), including intracerebral hemorrhage (ICH), intraventricular hemorrhage (IVH), and aneurysmal subarachnoid hemorrhage (aSAH), remains highly morbid. Trials of medical management for these conditions over recent decades have been largely unsuccessful in improving outcome and reducing mortality. Beyond its role in creating mass effect, the presence of extravasated blood in patients with CNS hemorrhage is generally overlooked. Since trials of surgical intervention to remove CNS hemorrhage have been generally unsuccessful, the potent neurotoxicity of blood is generally viewed as a basic scientific curiosity rather than a clinically meaningful factor. In this review, we evaluate the direct role of blood as a neurotoxin and its subsequent clinical relevance. We first describe the molecular mechanisms of blood neurotoxicity. We then evaluate the clinical literature that directly relates to the evacuation of CNS hemorrhage. We posit that the efficacy of clot removal is a critical factor in outcome following surgical intervention. Future interventions for CNS hemorrhage should be guided by the principle that blood is exquisitely toxic to the brain.

Risk Factors for Postoperative Rebleeding and Short-Term Prognosis of Spontaneous Cerebellar Hemorrhage.

PurposePostoperative rebleeding (PRB) is one of the most severe complications after hematoma evacuation of spontaneous intracerebral hemorrhage (ICH). PRB has been proven to be an independent risk factor for poor prognosis. Previous studies have shown that spot sign and blend sign are independent risk factors for PRB of spontaneous ICH. However, the risk factors for PRB of spontaneous cerebellar hemorrhage (SCH) have not been elucidated. The aim of the present study was to investigate the possible risk factors for PRB and short-term prognosis of patients with SCH.Patients and MethodsThis study identified 62 patients with SCH who underwent hematoma evacuation in our department. Risk factors for PRB and short-term prognosis were identified by a univariable logistic regression model, and predictors with a P value of less than 0.05 were included in the multivariable logistic regression model to identify independent predictors. A receiver operating characteristic (ROC) curve was created to test the sensitivity and specificity of independent risk factors.ResultsHematoma volume was the only independent predictor of PRB (OR=15.14, 95% CI=1.08–213.1, P=0.044). The sensitivity and specificity of hematoma volume to PRB were 63.6% and 89.7%, respectively, and the cutoff value of hematoma volume was >29.3 mL. GCS score ≤8 (OR=5.131, 95% CI=1.030–25.554, P=0.046) and PRB (OR=13.17, 95% CI=1.316–131.798, P=0.028) were independent risk factors for poor prognosis of patients with SCH. The sensitivity and specificity of the GCS score to poor prognosis were 66.7% and 86.2%, respectively. The sensitivity and specificity of the PRB to poor prognosis were 36.4% and 96.6%, respectively.ConclusionHematoma volume is likely to be a strong predictor of PRB among patients with SCH. GCS scores ≤8 on arrival and PRB were significant predictors of short-term poor outcome.