Conservative management of extradural haematomas

Surgical management of traumatic extradural haematoma: Experiences with 610 patients and prospective analysis

This study was carried out to find out the age, sex, mode of injury, localization, clinical presentation, CT findings, operative measures and outcome of extradural haematoma in the patient population at Dhaka Medical College. 610 consecutive patients with cranial extradural haematoma who underwent surgery in department of Neurosurgery from 1st January 2006 to 6th October 2008 were included in this prospective study. Each of the patients were evaluated in term of age, sex, mode of injury, localization of haematoma, clinical presentation, CT findings, operative measures and outcome. Out of 610 cases 86.32 % were male and 13.78 % were female. The male and female ratio was 6.27: 1. Age ranged from 2.5 to 83 years. Commonest age group was 21 to 30 years. Commonest mode of injury was Road traffic Accident 53.45%, followed by Assaults. Most common clinical presentation was headache / Vomiting 63.61 %, followed by altered sensorium 60.66 %. In this present prospective study of 610 cases of EDH, temporo parietal site was involved in 33.45 % followed by frontal region in 23.28 %. Sixty five patients (10.66 %) died; 19 of these had associated brain injuries and 28 cases were deeply unconscious. Extradural haematoma is a neurosurgical emergency where early surgical intervention is associated with the best prognosis. Many factors affects the outcome of extradural haematoma surgery and the most important one is the duration of time between incident/accident and operation in neurosurgical operation theater; mortality can be close to 0% if this time interval can be minimized.

[Guidelines for the management of severe traumatic brain injury. Part 3. Surgical management of severe traumatic brain injury (Options)]

Traumatic brain injury (TBI) is one of the main causes of mortality and severe disability in young and middle age patients. Patients with severe TBI, who are in coma, are of particular concern. Adequate diagnosis of primary brain injuries and timely prevention and treatment of secondary injury mechanisms markedly affect the possibility of reducing mortality and severe disability. The present guidelines are based on the authors' experience in developing international and national recommendations for the diagnosis and treatment of mild TBI, penetrating gunshot wounds of the skull and brain, severe TBI, and severe consequences of brain injury, including a vegetative state. In addition, we used the materials of international and national guidelines for the diagnosis, intensive care, and surgical treatment of severe TBI, which were published in recent years. The proposed recommendations for surgical treatment of severe TBI in adults are addressed primarily to neurosurgeons, neurologists, neuroradiologists, anesthesiologists, and intensivists who are routinely involved in treating these patients.

Novel Clinical Scale for Evaluating Pre-Operative Risk of Cerebral Herniation from Traumatic Epidural Hematoma

Secondary massive cerebral infarction (MCI) is the predominant prognostic factor for cerebral herniation from epidural hematoma (EDH) and determines the need for decompressive craniectomy. In this study, we tested the clinical feasibility and reliability of a novel pre-operative risk scoring system, the EDH-MCI scale, to guide surgical decision making. It is comprised of six risk factors, including hematoma location and volume, duration and extent of cerebral herniation, Glasgow Coma Scale score, and presence of preoperative shock, with a total score ranging from 0 to 18 points. Application of the EDH-MCI scale to guide surgical modalities for initial hematoma evacuation surgery for 65 patients (prospective cohort, 2012.02-2014.01) showed a significant improvement in the accuracy of the selected modality (95.38% vs. 77.95%; p = 0.002) relative to the results for an independent set of 126 patients (retrospective cohort, 2007.01-2012.01) for whom surgical modalities were decided empirically. Results suggested that simple hematoma evacuation craniotomy was sufficient for patients with low risk scores (≤9 points), whereas decompressive craniectomy in combination with duraplasty were necessary only for those with high risk scores (≥13 points). In patients with borderline risk scores (10-12 points), those having unstable vital signs, coexistence of severe secondary brainstem injury, and unresponsive dilated pupils after emergent burr hole hematoma drainage had a significantly increased incidence of post-traumatic MCI and necessity of radical surgical treatments. In conclusion, the novel pre-operative risk EDH-MCI evaluation scale has a satisfactory predictive and discriminative performance for patients who are at risk for the development of secondary MCI and therefore require decompressive craniectomy.

Conservative vs. Surgical Management of Post-Traumatic Epidural Hematoma: A Case and Review of Literature

Patient: Male, 30

Final Diagnosis: Acute epidural hematoma

Symptoms: —

Medication: —

Clinical Procedure: Observation

Specialty: Neurosurgery

Epidural Hematoma Treated Conservatively: When to Expect the Worst

Background: The Brain Trauma Foundation’s 2006 surgical guidelines have objectively defined the epidural hematoma (EDH) patients who can be treated conservatively. Since then, the literature has not provided adequate clues to identify patients who are at higher risk for EDH progression (EDHP) and conversion to surgical therapy. The goal of our study was to identify those patients. Methods: We carried a retrospective review over a 5-year period of all EDH who were initially triaged for conservative management. Demographic data, injury severity and history, neurological status, use of anticoagulants or anti-platelets, radiological parameters, conversion to surgery and its timing, and Glasgow Outcome Scale were analyzed. Bivariate association and further logistic regression were used to point out the significant predictors of EDHP and conversion to surgery. Results: 125 patients (75% of all EDH) were included. The mean age was 39.1 years. The brain injury was mild in 62.4% of our sample and severe in 14.4%. Only 11.2% of the patients required surgery. Statistical comparison showed that younger age (p< 0.0001) and coagulopathy (p=0.009) were the only significant factors for conversion to surgery. There was no difference in outcomes between patients who had EDHP and those who did not. Conclusions: Most traumatic EDH are not surgical at presentation. The rate of conversion to surgery is low. Significant predictors of EDHP are coagulopathy and younger age. These patients need closer observation because of a higher risk of EDHP. Outcome of surgical conversion was similar to successful conservative management.

Conservative management of significant supratentorial epidural hematomas in pediatric patients

BACKGROUND

Radiologically significant epidural hematomas are generally treated with craniotomy and evacuation. However, pediatric patients with such hematomas may have normal neurological examinations. We aim to report the presenting features, management, and outcomes of pediatric patients who underwent conservative management of such hematomas at our center and also show that serial neurological examinations are a safe and effective way of managing these patients.

METHODS

A retrospective review of pediatric patients with extradural hematoma (EDH) thickness of at least 1 cm and who were conservatively managed was performed. All patients were followed up in neurosurgery outpatient clinics after discharge at 1-month, 3-month, 6-month, and 1-year intervals. Detailed neurological examination was performed at each visit, and a standardized questionnaire was also used to document the parent's subjective opinion of the patient's quality of life.

RESULTS

A total of 17 patients satisfied the study criteria and were included. Conservative management was successful in 15 patients, while a craniotomy with evacuation of hematoma had to be performed in two patients. All patients had a GOS score of 5 on 1-year follow-up, had normal schooling, and reported complete satisfaction with the management protocol.

CONCLUSION

Conservative treatment is an optimal treatment option, and patients can be followed safely using a protocol of serial neurological examinations. A center must have resources to perform a craniotomy with evacuation of EDH in case of neurological worsening and be able to provide trained staff to carry out serial neurological examinations before treating these patients conservatively.

Computed tomography angiography for detection of middle meningeal artery lesions associated with acute epidural hematomas

Background. The natural history of traumatic aneurysms of the middle meningeal artery (MMA) is not well known, but patients with these lesions are more likely to have delayed bleeds. In this paper, we described a series of patients with epidural hematoma who underwent angiotomography (CTA) for MMA vascular lesion diagnosis. Methods. Eleven patients admitted to our emergency unit with small acute epidural hematoma were prospectively studied. All patients with temporal acute epidural hematomas underwent CTA and cerebral angiogram at our institution for diagnosis of posttraumatic lesions of middle meningeal artery. The findings of angiotomography and digital angiography were reviewed by radiologist and angiographers, respectively, to ensure that the lesions were readily diagnosed without knowing the results of angiotomography and to compare CTA findings with standard angiogram. Results. The causes of head injury were traffic accidents, falls, and aggression. Three of these patients presented traumatic MMA pseudoaneurysm. CT angiography was able to diagnose all of them, with dimensions ranging from 1.5 to 2.8 mm. Conventional angiography confirmed the findings of CT angiography, and the lesions presented with similar dimensions at both methods. Conclusions. We believe that angiotomography can be a useful technique for diagnosis of vascular lesion associated with small epidural hematoma.

Post-Traumatic Frontal and Parieto-Occipital Extradural Haematomas: a Retrospective Analysis of 41 Patients and Review of the Literature

The purpose of this study was to analyse the differences between patients with frontal (FEDH) or parieto-occipital (POEDH) epidural haematomas and evaluate possible statistically significant prognostic factors.

In this retrospective study of a group of 41 patients with a FEDH (17) or POEDH (24 individuals), the authors analysed the influence of gender, age, type of injury, clinical presentation, Glasgow coma scale (GCS) score on admission, radiological findings, and time interval from trauma to surgery on outcomes. A good recovery and moderate disability were considered a “good” or “favourable outcome”, whereas severe disability, a vegetative state or death was a “poor outcome”.

In the POEDH subgroup, a higher GCS score on admission and a younger age were statistically significant prognostic factors for a better outcome (p=0.006, rs=0.702). In the subgroup of patients with FEDHs, the results were not significant. However, patients with FEDHs more frequently had “good outcomes” than members of the POEDH subgroup (88.2 vs. 70.9%). Children (≤ 18 years old) constituted a smaller portion of the POEDH subgroup (12.5%) than those in the FEDH subgroup (41.2%). The evaluation of time intervals between the accident and surgery (≤ 24 h vs. > 24 h) showed no significant influence on outcomes in any of the studied subgroups. However, patients undergoing surgery within 24 h of their injury had a less favourable GCS score on admission than those operated on more than 24 h after their injury. Subacute and chronic clinical courses predominated in patients with a FEDH (10/17 FEDH vs. 11/22 POEDH). Different accompanying intradural lesions occurred in 12 patients of the POEDH subgroup, but only in 2 of the FEDH subgroup (50 vs. 11.8%). However, the presence of such lesions did not significantly deteriorate surgical outcomes in either of the subgroups.

Biochemical effects of experimental epidural hematoma on brain parenchyma of rats

INTRODUCTION

The management of epidural hematoma is classified into surgical or conservative treatment according to clinical and radiologic parameters. In the recent years, the number of paper suggesting conservative management has been increasing. The experimental works that have been performed are based on especially the effects of epidural hematomas. Basic pathophysiologic factors on ischemia result of brain trauma are based on biochemical mediators. Nitric oxide (NO) and malondialdehyde (MDA) are the substances that play important roles in brain damage after trauma.

MATERIAL AND METHOD

In this study, 36 rats are divided into three groups (n = 12/group). Epidural hematoma was achieved by 0.1 ml autolog blood in rat epidural space with balloon model. Early and late phase biochemical effects on parenchyma of epidural hematoma operated in a volume which neither alters intracranial pressure (ICP) nor creates shift effect were observed. Biochemical changes of NO and MDA levels were examined in each of three experimental groups.

RESULTS

NO values increased significantly in the early group (6 hours) compared with those in the control group. Difference of NO values between the control and late groups was not significant. An increase has been found in MDA values in the control group compared with those in the early group. MDA values of the late group (30 days) were closer to that of the control group.

CONCLUSION

In this study, considering biochemical results, we have found that conservative volumes which neither increase ICP nor cause brain shift do not lead to permanent changes on brain.

Surgical Management of Acute Epidural Hematomas

RECOMMENDATIONS (see Methodology)

Indications for Surgery

Timing

Methods

Traumatic brain injury: patterns of failure of nonoperative management

OBJECTIVE

The circumstances of failure for nonoperative management of blunt traumatic brain injury have been poorly defined. In this study, all trauma patients identified over a 12-year period with progression of neurologic injury requiring craniotomy were retrospectively reviewed.

METHODS

Data collected included demographic information, mechanism of injury, field and admission vital signs, and Glasgow Coma Scale score, medications, associated injuries, and coagulopathy. Head computed tomographic scans were reviewed, and anatomic findings were correlated with clinical changes (change in mental status or elevation of intracranial pressure) that led to subsequent CT scan and craniotomy.

RESULTS

Of 20,100 patients, there were 852 who had computed tomographic scans with acute intracranial injuries on admission; 462 patients were managed nonoperatively. Fifty-seven patients had progression of neurologic injury (34 < 24 hours = early; 23 > 24 hours = late) that required surgery.

CONCLUSION

Of the variables investigated, only anatomic location of injury was found to be predictive of early failure of nonoperative management. Frontal intraparenchymal hematomas are particularly prone to early failure. Clinical examination and intracranial pressure monitoring are equally important in detecting failure and should be an integral part of nonoperative management.

Asymptomatic or minimally symptomatic traumatic epidural haematomas: comparison of the results of surgical and conservative management related to SPECT and neuropsychological tests. Preliminary results

One hundred and thirteen patients with asymptomatic or minimally symptomatic epidural heamatomas treated surgically or conservatively in our department were collected prospectively. Between 3 and 6 months after the head injury a SPECT (single photon emission computed tomography) study for evaluation of the three-dimensional cerebral blood flow distribution and extensive neuropsychological tests were performed in 22 patients. The preliminary results of this prospective study have demonstrated that minimally symptomatic or asymptomatic EDHs cause no pathologic SPECT findings and that neuropsychological impairment and duration of the haematoma do not affect the results of conservative management.

Conservative management of extradural haematomas: effects of skull fractures on resorption rate

In conservative management of extradural haematomas (EDH), several mechanisms were described to explain the resorption of the haematoma. One of these was the transfer of the clot into the epicranial space through the skull fracture. In this study, the effects of skull fracture and associated intracranial lesions in the conservative management of EDH were investigated. Skull fracture and associated intracranial lesions were found in 71.11% and 51.1% of the patients, respectively. Resorption rate was calculated using an original formula and it was 0.548 +/- 0.227 in patients with skull fracture and 0.507 +/- 0.170 in patients with both skull fractures and additional intracranial lesions. These rates were found to be significantly higher than in the patients without fracture. In conclusion, in the patients with EDH planned to be managed conservatively, skull fracture and additional intracranial lesions must not be thought as risk factors, on the contrary, resorption of the clot might be earlier than in the others.

Chronic expanding epidural haematoma. Case report

An encapsulated fluid epidural haematoma in a 9-year-old boy was successfully evacuated by a simple burr hole procedure 5 months after a minor head injury. Clinicopathological findings suggested that chronic expansion of an initially unsuspected epidural haematoma occurred as a result of repeated haemorrhages from the haematoma membrane, resulting in an unusually long delayed appearance of clinical evidence. This case demonstrates that a chronic expanding process similar to that seen in chronic subdural haematoma needs to be considered as a possible complication of epidural haematoma and indicates an important role for the haematoma membrane in the chronic expansion of epidural haematoma.