Neurological injuries in South Australia: the influence of distance on management and outcome

Pediatric Congenital Anterior Skull Base Encephaloceles and Surgical Management: A Comparative Review of 22 Patients Treated With Transnasally, Transcranially, or Combined Approach With a Review of the Literature

BACKGROUND AND OBJECTIVES

Anterior basal encephaloceles are considered a rare entity and are often associated with midline cerebral abnormalities. Those with a large skull base defect and herniation of brain parenchyma in the neonate or young infant present unique challenges for surgical management.

METHODS

We analyzed the neurosurgical administrative and operative databases between 1986 and 2022 to determine clinical presentation, operative approach, and outcome of basal encephaloceles.

RESULTS

Over the 36-year period, 27 pediatric anterior basal encephaloceles were managed, of which 22 had full documentation and images allowing comprehensive review. Mean age at presentation was 5 years (SD 4.94). The majority were transethmoidal encephaloceles (59%), followed by the transsphenoidal-sphenoethmoidal type (32%). Overall, 91% were managed surgically by a transcranial, endoscopic, or combined approach. Four children required subsequent procedures, predominantly for persistent cerebrospinal fluid leak. No significant differences in proportion of patients requiring interval/revision surgery after initial conservative, endoscopic endonasal, or transcranial surgery was identified. Neither age at surgery nor size of the defect on computed tomography scan was associated with the need for revision surgery. Size of cranial defect was significantly smaller in the endoscopic group (P = .01). There was a historic tendency for younger children with larger defects to have a transcranial approach. With the addition of endoscopic skull base expertise, smaller defects in older children were more recently treated endoscopically.

CONCLUSION

Basal encephaloceles are rare and complex lesions and are optimally managed within a skull base multidisciplinary team able to provide multiple approaches. Large skull base defects with brain parenchymal involvement often require a transcranial or combined transcranial-endoscopic approach.

Rurality index score and pediatric neuro-oncological outcome in Ontario

OBJECTIVE

Rapid access to neurosurgical decisions and definitive management are vital for the outcome of neurocritical patients. There are unique challenges associated with the provision of services required to maintain critical infrastructure for rural citizens. Given that a relationship between rurality, marginalization, and health outcomes has been identified as associated with higher mortality rates and higher rates of many diseases, the authors studied whether worse clinical outcomes were associated with rurality in pediatric neuro-oncological disease.

METHODS

Using linked administrative databases, the authors retrospectively analyzed a population-based cohort of patients diagnosed with a pediatric brain tumor between 1996 and 2017 in Ontario, Canada. The main variable of interest was the Rurality Index for Ontario (RIO; larger value denotes more rural); the main outcome was survival, while controlling for surgery and tumor type.

RESULTS

Of the 1428 patients included, 53.9% were male. Overall survival of all the children (controlling for surgery and tumor type) at 1, 5, and 10 years was 84.7%, 65.1%, and 58.4%, respectively. A total of 11.5% were classified as living in a rural area of Ontario. The distance to the nearest pediatric neurosurgical hospital ranged from 25.6 to 167.4 km. The RIO score was 0 in 38.7% of children, and the majority of patients had a RIO score < 40. A higher RIO score was not a significant factor (continuous p = 0.12/ordinal p = 0.18) associated with length of follow-up, indicating that rurality was not significantly linked to compliance with clinical follow-up.

CONCLUSIONS

Rurality of the region in which pediatric neuro-oncological patients reside was not associated with patient outcome (HR 0.83, p = 0.39).

Case Series of Neurotrauma Managed by General Surgeon at Ladakh - The Highest Plateau State of India

Trauma including neurotrauma is one of the major killers in the world. The health infrastructure in developing countries has a huge disparity, with super specialist care confined to big cities only. Adding to this problem is factors like poverty, poor road condition and no organised emergency evacuation system. The utopian scenario where specialist and infrastructure are made available in every village is a distant dream. So at present, the most feasible and cost-effective way to prevent death due to neurotrauma in rural and remote setting is putting the general surgeon working in remote area at the forefront. Our study is an effort in this direction and is reporting operative management of patients with neurotrauma in remote high-altitude Ladakh. So today, the need of hour is continuing skill enhancement training for capacity building of rural surgeon, where they are trained to do burr hole and craniotomy for reducing mortality and morbidity from neurotrauma.

Supplementary Information

The online version contains supplementary material available at 10.1007/s12262-021-03002-x.

The Dubrava Model-A Novel Approach in Treating Acutely Neurotraumatized Patients in Rural Areas: A Proposal for Management

Introduction Neurotrauma is one of the leading causes of death and disabilities nowadays and represents one of the largest socioeconomic problems in rich countries, as well as developing ones. A satisfying, medically viable, and cost-effective model of managing acutely neurotraumatized patients, especially ones who come from distant and/or rural areas, has yet to be found. Patient outcome after acute neurotrauma depends on many factors of which the possibility of urgent treatment by an experienced specialist team has a crucial role. Here, we present our own way of managing acutely neurotraumatized patients from distant places which is unique in Croatia, the Dubrava model.

Methods We present our 5-year experience cooperating with general hospitals in four neighboring cities (Ĉakovec, Bjelovar, Sisak, and Koprivnica) in managing, operating, and taking care of acutely neurotraumatized patients.

Results More than 300 surgeries have been performed in these hospitals through the Dubrava model. Our experience so far provides encouraging results that this system could also be successfully implemented in other institutions. Furthermore, we recorded an increased number of surgeries each year, as well as a good mutual cooperation with the local general hospitals.

Discussion This trauma managing model is one of a kind in Croatia. We argue that it is not only better for the patients, providing them with better chances of survival, and disability-free recovery, but is also far superior in many ways to the dominant and currently prevalent way of treating these patients in other parts of Croatia.

Conclusion The Dubrava model of treating patients in rural and distant areas is a reliable and proven model with many benefits and as such its implementation should be considered in other institutions as well.

The Current State of Rural Neurosurgical Practice: An International Perspective

Introduction:

Rural and low-resource areas have diminished capacity to care for neurosurgical patients due to lack of infrastructure, healthcare investment, and training programs. This review summarizes the range of rural neurosurgical procedures, novel mechanisms for delivering care, rapid training programs, and outcome differences across international rural neurosurgical practice.

Methods:

A comprehensive literature search was performed for English language manuscripts with keywords “rural” and “neurosurgery” using the National Library of Medicine PubMed database (01/1971–06/2017). Twenty-four articles focusing on rural non-neurosurgical practice were included.

Results:

Time to care and/or surgery and shortage of trained personnel remain the strongest risk factors for mortality and poor outcome. Telemedicine consults to regional centers with neurosurgery housestaff have potential for increased timeliness of diagnosis/triage, improved time to surgery, and reductions in unnecessary transfers in remote areas. Mobile neurosurgery teams have been deployed with success in nations with large transport distances precluding initial transfers. Common neurosurgical procedures involve trauma mechanisms; accordingly, training programs for nonneurosurgery medical personnel on basic assessment and operative techniques have been successful in resource-deficient settings where neurosurgeons are unavailable.

Conclusions:

Protracted transport times, lack of resources/training, and difficulty retaining specialists are barriers to successful outcomes. Advances in telemedicine, mobile neurosurgery, and training programs for urgent operative techniques have been implemented efficaciously. Development of guidelines for paired partnerships between rural centers and academic hospitals, supplying surplus technology to rural areas, and rapid training of qualified local surgical personnel can create sustainable feed-forward programs for trainees and infrastructural solutions to address challenges in rural neurosurgery.

RURAL NEUROTRAUMA IN AUSTRALIA: IMPLICATIONS FOR SURGICAL TRAINING

BACKGROUND

Australia's vast size and small population preclude a neurosurgical service in most rural areas. Thus, general surgeons often initially manage rural neurotrauma. This study aimed to define the neurotrauma surgical caseload in rural Australia and to examine the level of training and confidence of rural surgeons for neurotrauma management.

METHODS

A questionnaire was sent to all Australian members of the Division of Rural Surgery of the Royal Australasian College of Surgeons. Responses were grouped by distance from a neurosurgical centre and analysed using one-way anova.

RESULTS

The response rate was 91%, and 161 rural surgeons were included. In total, 90 surgeons carried out approximately 600 procedures for neurotrauma in 5 years. The number of procedures per surgeon increased with distance from a neurosurgical centre (P < 0.0001), as did pre-transport delays (P < 0.001). Combined pre-transport and transport time was at least 2 h for 84% of surgeons. The majority (75% or more) of rural surgeons accessed hospitals with necessary basic infrastructure, including 24-h computed tomography scan, emergency department, and intensive care unit. There was no association between distance from a neurosurgical centre and level of neurosurgical training. Only 28% of rural surgeons had neurosurgery training more advanced than resident level. However, confidence with management of cranial trauma increased significantly with distance. More distant surgeons felt more confident with computed tomography reading (P = 0.02); burr hole (P = 0.02); craniotomy (P = 0.03) and intracranial pressure monitor insertion (P < 0.0001).

CONCLUSIONS

A significant volume of neurotrauma is managed surgically in rural Australia as dictated by distance. However, neurotrauma training of rural surgeons has occurred on an ad hoc basis, with those most exposed and most distant developing some confidence. Evidence for specific adequate training is lacking, but this study suggests that it is necessary.

The Westmead Head Injury Project outcome in severe head injury. A comparative analysis of pre-hospital, clinical and CT variables

A prospective study of 315 consecutive patients with a severe head injury was undertaken to study factors contributing to mortality and morbidity, both in the pre-hospital and hospital phases. Entry criteria were a Glasgow Coma Scale (GCS) score of 8 or less after non-surgical resuscitation within 6 h of the injury, or a deterioration to that level within 48 h. Patients with gunshot wounds or who were dead on arrival were excluded. End points of the study were either death or at 6 months after the injury. Predictors of mortality were increasing age, the presence of hypotension, a low GCS, abnormal motor responses and pupillary non-reactivity. In the 167 patients in whom intracranial pressure (ICP) was measured, raised ICP and failure to respond to treatment for raised ICP also predicted mortality. Three CT predictors of mortality were the presence of cerebral oedema, intraventricular blood and the degree of midline shift. When analysed using logistic regression, the most accurate model (accuracy 84.4%) included increasing age, abnormal motor responses and the three CT indicators. Analysis of the data for 'good' (Glasgow Outcome Score (GOS) 1 and 2) vs 'poor' (GOS 3 and 4) survival at 6 months was also performed using logistic regression. The model which provided the most accurate prediction of poor outcome included age, hypotension and three different CT characteristics, subarachnoid blood, intracerebral haematoma or intracerebral contusion (accuracy 72.5%).

Extradural haemorrhage in infancy and childhood. A review of 35 years' experience in South Australia

One hundred and two paediatric cases of extradural haemorrhage (EDH) were treated in Adelaide, South Australia, during the period 1954-1988; 10 were infants (0-2 years) and 92 were children (2-14 years). There were 9 deaths (mortality 8.8%). Long-term disabilities severe enough to interfere with school and/or employment were seen in 8 (7.8%) survivors. This relatively low number of adverse outcomes is partly an expression of a low incidence (5.9%) of associated intradural haematomas and few high-velocity impacts due to vehicular accidents. There is reason to believe that the results of treatment have improved in the decade 1977-1988. We attribute this in part to early diagnosis by computed tomography (CT), but a contributory factor may be earlier referrals from country centres to a paediatric trauma centre and rapid transfer, by air or road, by medical retrieval teams.

Management of a patient with traumatic tetraplegia from Central Australia: case report

During the 6-year period up to 1 January 1988, 10 patients were admitted to our unit from Central Australia with spinal cord injuries resulting from motor vehicle accidents. Of these half had received their injury whilst resting unrestrained in the rear of a moving vehicle. Three of these were recumbent. The case is presented of a 26-year-old male who was injured whilst resting in the rear of a moving vehicle that left the roadway and rolled in remote central Australia. The injuries sustained were a closed head injury, fractures of the left lateral masses of C5, C6 and C7, a burst fracture of C7 with an asymmetrical complete tetraplegia: C5 on the left, C6 on the right. Initial orthopaedic management was skeletal traction. An inpatient rehabilitation programme has been completed.

Extradural haemorrhage: strategies for management in remote places

A study of 109 cases of extradural haemorrhage (EDH) treated in South Australia over a period of 7 years showed that 35 cases (32.1 per cent) presented in country areas at considerable distances from a neurosurgical service: the mortality in these country cases was 22.9 per cent, comparing unfavourably with a mortality of 12.2 per cent in metropolitan cases. The country series contained a disproportionately large number of cases with multiple intracranial haemorrhages, which are known to have a poorer outcome; when these cases were excluded, the rural mortality (12.5 per cent) was only a little over the metropolitan mortality (9.7 per cent). These data suggest that it is possible to manage extradural haemorrhages successfully even in places remote from a neurosurgical centre, if communications and air transport are used effectively. However, it was found that emergency operations carried out in country hospitals were sometimes inadequate or done too late. Medical retrieval teams based on city hospitals were sent out on 15 occasions, either to assist a general surgeon to complete an emergency operation, or to provide intensive care during transfer to a neurosurgical unit. Osmotherapy (mannitol and/or frusemide) has been useful in gaining time for transfer; the choice between immediate operation and transfer may be difficult, and decisions should take transfer time, clinical state and rate of deterioration into account.

Experience with extradural haematomas in New South Wales

A retrospective study of 126 patients with extradural haematomas was made to determine whether their outcome could be modified by alteration of their management. Poor outcome occurred in those over 65 years of age, in motor smash victims, in those with fixed pupils, in those with major associated injuries or those comatose on hospital admission. The detection of skull fracture or of a lucid interval was not prognostically useful. A graduation in mortality according to the type of hospital was present but did not reach statistical significance. Failure to correct shock and delay in instituting definitive treatment were the major preventable factors which could be modified to improve outcome.

Experience with spinal injuries in New South Wales

Two hundred and two patients with acute and severe spinal injuries were treated in various hospitals in New South Wales during 1977 and 1978. Of these, 132 (65%) were cervical, 60 (30%) thoracic, eight (4%) lumbar and two were inadequately recorded. A major concurrent injury to the head was present in every third patient, to the chest in every fourth patient, and to the limbs in every fifth patient. The outcomes of patients reported in this series make it one of the worst in the literature. Sixty-nine (34%) patients died in hospital; of the 133 survivors, only 22 (11%) have resumed work, the remainder being partially or totally disabled. It is estimated that another 302 patients died before arrival in hospital. In country areas, the time lags between accident and ambulance notification, and between notification and arrival at hospital, were uncertain in many cases, but periods in excess of 2 hours were recorded in 28 (14%). One-man ambulances or private vehicles were used in at least 43 cases (21%). After admission, 139 patients were transferred to other hospitals for definitive treatment, arriving after an average time of 22 h (median time 9 h); for such patients, the original hospital presumably served as a first aid station. A case control study suggests that preventable delay in transport, inappropriate treatment, and failure to correct shock may have been causative factors in 16 deaths in this series. Reduction of the time lag between accident and institution of definitive treatment will save lives, and may avoid some crippling neurological deficits.(ABSTRACT TRUNCATED AT 250 WORDS)

Logistics of early management of head and spinal injuries

The logistics of early management have been studied in a series of 1161 patients with head and/or spinal injuries, who were admitted to hospital in NSW in 1977-78. Special attention has been given to three subgroups: 336 head injuries with records of impaired consciousness before first hospital admission, 355 head injuries later transferred because of deterioration, and 202 serious spinal injuries. It was found that in at least 18% of unconscious head injuries, and a similar percentage of spinal injuries, first aid and transport to hospital were provided by ambulances recorded to have only one trained staff member. In country areas, 41% of unconscious head injuries reached hospital after periods of time exceeding 1 h. For administrative as well as geographic reasons, more than 80% of initially unconscious head injuries and spinal injuries were first admitted to hospitals without neurosurgical and/or spinal services; the majority of cases in both groups, therefore, had to be transferred to other hospitals, often within 6 h of first admission. In the subgroup of cases transferred because of deterioration, mortality increased with distance from a neurosurgical unit. These findings are related to the concept of an integrated regional trauma service.

Preventable causes of death and disability from neurotrauma

Preventable causes of death and disability have been studied retrospectively in a series of 1161 cases of neurotrauma occurring in New South Wales in 1977-78, and prospectively in 153 cases of neurotrauma occurring in country districts in South Australia in 1981-82. In the first study, it was found that at least 80 deaths could be attributed to preventable causes; chiefly, transfer to an inappropriate hospital and/or delay in instituting treatment. Apparent failures in initial management of shock and airway obstruction were evident in this study and also in the South Australian study, which identified major deficiencies in cardiorespiratory management in 7% of cases transferred from country areas. These studies confirm that there is a need for better training, at all levels, in the management of neurotrauma. They also provide powerful arguments for the concept of an integrated regional trauma service.