Workplace intervention programmes for decreasing alcohol use in military personnel: a systematic review

INTRODUCTION

Harmful or risky-single occasion drinking (RSOD) alcohol use in the military is a significant problem. However, most studies of interventions have focused on veterans, representing a missed opportunity for intervention with active military personnel. Using the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) framework, the aim of this systematic review was to analyse and synthesise the evidence related to workplace-based interventions for reducing alcohol use in active-duty military personnel.

METHODS

Four electronic databases and reference lists of relevant articles were searched from database inception until 20 January 2020. This review focused on experimental and quasi-experimental studies of active-duty military personnel. Data extraction and methodological quality assessment were independently performed by two reviewers using a standardised checklist. A third reviewer was used to arbitrate the disputed studies for final selection.

RESULTS

The search yielded seven studies from an initial 1582 records identified. A range of interventions were used in these studies (four randomised controlled trials, two non-randomised trials and one before and after cohort study), including web-based approaches, telephone-delivered interventions and individual and group-based face-to-face interventions. Seven studies found decreased drinking, measured using a range of outcomes, following the intervention. However, this was not sustained in the longer term in any of the studies.

CONCLUSIONS

The low methodological rigour of most studies limited the capacity to demonstrate the efficacy of the interventions studied. Given the importance of reducing harmful or RSOD use of alcohol in the military, future studies would benefit from improved methodological rigour including ensuring adequate study power, randomisation, selection of validated outcome measures, including measures other than consumption (eg, attitudinal measures), and longer-term follow-up. There is also a need to develop methods that ensure participant loss to follow-up is minimised.

Comparing short versions of the Alcohol Use Disorders Identification Test (AUDIT) in a military cohort

Background

The Alcohol Use Disorders Identification Test (AUDIT) is widely used for monitoring harmful alcohol consumption among high-risk populations. A number of short versions of AUDIT have been developed for use in time-constrained settings. In military populations, a range of AUDIT variations have been used, but the optimal combination of AUDIT items has not been determined.

Methods

A total of 952 participants (80% male), recruited as part of a wider study, completed the AUDIT-10. We systematically assessed all possible combinations of three or four AUDIT items and established AUDIT variations using the following statistics: Cronbach’s alpha (internal consistency), variance explained (R2) and Pearson’s correlation coefficient (concurrent validity).

Results

Median AUDIT-10 score was 7 for males and 6 for females, and 380 (40%) participants were classified as having a score indicative of harmful or hazardous alcohol use (≥8) according to WHO classifications.

A novel four-item AUDIT variation (3, 4, 8 and 9) performed consistently higher than established variations across statistical measures; it explained 85% of variance in AUDIT-10, had a Pearson’s correlation of 0.92 and Cronbach’s alpha was 0.63. The FAST, an established shortened AUDIT variant, together with several other four-item novel variants of AUDIT-10 performed similarly. The AUDIT-C performed consistently low on all measures, but with a satisfactory level of internal consistency (75%).

Conclusion

Shortened AUDIT variations may be suitable alternatives to the full AUDIT for screening hazardous alcohol consumption in military populations. Four-item AUDIT variations focused on short-term risky drinking and its consequences performed better than three item versions.

Trial registration number

ACTRN12614001332617.

Early predictors of health-related quality of life outcomes in polytrauma patients with spine injuries: a level 1 trauma center study

Study Design Retrospective review on clinical-quality trauma registry prospective data. Objective To identify early predictors of suboptimal health status in polytrauma patients with spine injuries. Methods A retrospective review on a prospective cohort was performed on spine-injured polytrauma patients with successful discharge from May 2009 to January 2011. The Short Form 12-Questionnaire Health Survey (SF-12) was used in the health status assessment of these patients. Univariate and multivariate logistic regression models were applied to investigate the effects of the Injury Severity Score, age, blood sugar level, vital signs, brain trauma severity, comorbidities, coagulation profile, spine trauma-related neurologic status, and spine injury characteristics of the patients. Results The SF-12 had a 52.3% completion rate from 915 patients. The patients who completed the SF-12 were younger, and there were fewer patients with severe spinal cord injuries (American Spinal Injury Association classifications A, B, and C). Other comparison parameters were satisfactorily matched. Multivariate logistic regression revealed five early predictive factors with statistical significance (p ≤ 0.05). They were (1) tachycardia (odds ratio [OR] = 1.88; confidence interval [CI] = 1.11 to 3.19), (2) hyperglycemia (OR = 2.65; CI = 1.51 to 4.65), (3) multiple chronic comorbidities (OR = 2.98; CI = 1.68 to 5.26), and (4) thoracic spine injuries (OR = 1.54; CI = 1.01 to 2.37). There were no independent early predictive factors identified for suboptimal mental health-related qualify of life outcomes. Conclusion Early independent risk factors predictive of suboptimal physical health status identified in a level 1 trauma center in polytrauma patients with spine injuries were tachycardia, hyperglycemia, multiple chronic medical comorbidities, and thoracic spine injuries. Early spine trauma risk factors were shown not to predict suboptimal mental health status outcomes.

Epidemiological trends of spine trauma: an Australian level 1 trauma centre study

Knowledge of current epidemiology and spine trauma trends assists in public resource allocation, fine-tuning of primary prevention methods, and benchmarking purposes. Data on all patients with traumatic spine injuries admitted to the Alfred Hospital, Melbourne between May 1, 2009, and January 1, 2011, were collected from the Alfred Trauma Registry, Alfred Health medical database, and Victorian Orthopaedic Trauma Outcomes Registry. Epidemiological trends were analyzed as a general cohort, with comparison cohorts of nonsurvivors versus survivors and elderly versus nonelderly. Linear regression analysis was utilized to demonstrate trends with statistical significance. There were 965 patients with traumatic spine injuries with 2,333 spine trauma levels. The general cohort showed a trimodal age distribution, male-to-female ratio of 2:2, motor vehicle accidents as the primary spine trauma mechanism, 47.7% patients with severe polytrauma as graded using the Injury Severity Score (ISS), 17.3% with traumatic brain injury (TBI), the majority of patients with one spine injury level, 7% neurological deficit rate, 12.8% spine trauma operative rate, and 5.2% mortality rate. Variables with statistical significance trending toward mortality were the elderly, motor vehicle occupants, severe ISS, TBI, C1-2 dissociations, and American Spinal Injury Association (ASIA) A, B, and C neurological grades. Variables with statistical significance trending toward the elderly were females; low falls; one spine injury level; type 2 odontoid fractures; subaxial cervical spine distraction injuries; ASIA A, B, and C neurological grades; and patients without neurological deficits. Of the general cohort, 50.3% of spine trauma survivors were discharged home, and 48.1% were discharged to rehabilitation facilities. This study provides baseline spine trauma epidemiological data. The trimodal age distribution of patients with traumatic spine injuries calls for further studies and intervention targeted toward the 46- to 55-year age group as this group represents the main providers of financial and social security. The study's unique feature of delineating variables with statistical significance trending toward both mortality and the elderly also provides useful data to guide future research studies, benchmarking, public health policy, and efficient resource allocation for the management of spine trauma.

Intracranial arteriovenous malformations in childhood: presentation, management and outcome

Cases of true intracranial arteriovenous malformations (AVMs) presenting over a 25 year period were reviewed in order to achieve a better understanding of the behaviour and management of AVMs in children. There were 69 cases, presenting with haemorrhage (78%), seizures (13%) cardiac failure (3%) and focal signs with or without headache (6%). It was less common to present under six years of age. CT scanning, where performed, always demonstrated an abnormality, but this was suggestive of an AVM in less than one third. By contrast, angiography defined the lesion in 82% of initial studies. 59 patients underwent a surgical procedure directed at their AVM or an associated haematoma. Total AVM excision was obtained in 65%, with none of these later rebleeding. Three patients presenting solely with seizures were not operated upon initially, but underwent successful resections of their lesions after later haemorrhages. There were 6 (9%) deaths in the series, with focal deficits in 52% of survivors at last follow up. In the operative group these figures were 3% and 51%, respectively. None of the eight patients operated upon prior to a clinical bleed suffered a new neurological deficit. The role of stereotactic radiosurgery, although not used in any of our cases, is discussed. We believe that our results support an aggressive surgical approach to childhood AVMs, regardless of presentation, given the significant risk of morbidity from a later bleed, and the lack of a clearly better outcome with expectant management or irradiation.

Inception of an Australian spine trauma registry: the minimum dataset

Background The establishment of a spine trauma registry collecting both spine column and spinal cord data should improve the evidential basis for clinical decisions. This is a report on the pilot of a spine trauma registry including development of a minimum dataset. Methods A minimum dataset consisting of 56 data items was created using the modified Delphi technique. A pilot study was performed on 104 consecutive spine trauma patients recruited by the Victorian Orthopaedic Trauma Outcomes Registry (VOTOR). Data analysis and collection methodology were reviewed to determine its feasibility. Results Minimum dataset collection aided by a dataset dictionary was uncomplicated (average of 5 minutes per patient). Data analysis revealed three significant findings: (1) a peak in the 40 to 60 years age group; (2) premorbid functional independence in the majority of patients; and (3) significant proportion being on antiplatelet or anticoagulation medications. Of the 141 traumatic spine fractures, the thoracolumbar segment was the most frequent site of injury. Most were neurologically intact (89%). Our study group had satisfactory 6-month patient-reported outcomes. Conclusion The minimum dataset had high completion rates, was practical and feasible to collect. This pilot study is the basis for the development of a spine trauma registry at the Level 1 trauma center.

Is performance on the Wechsler test of adult reading affected by traumatic brain injury?

OBJECTIVES

The validity of the National Adult Reading Test (NART) as a predictor of premorbid IQ when used with patients who have sustained a traumatic brain injury (TBI) has been questioned in recent years. This study examined whether performance on the Wechsler Test of Adult Reading (WTAR) is similarly affected by TBI in the first year after an injury.

DESIGN AND METHOD

The WTAR scores of participants who had sustained a mild TBI (N=82), moderate TBI (N=73), severe TBI (N=61) or an orthopaedic injury (N=95) were compared (cross-sectional study). A subset of 21 mild TBI, 31 moderate TBI, 26 severe TBI and 21 control group participants were additionally reassessed 6 months later to assess the impact of recovery on WTAR scores (longitudinal study).

RESULTS

The severe TBI group had significantly lower scores on the WTAR than the mild TBI, moderate TBI and control groups in the cross-sectional study, despite being matched demographically. The findings from the longitudinal study revealed a significant group difference and a small improvement in performance over time but the interaction between group and time was not significant, suggesting that the improvements in WTAR performance over time were not restricted to more severely injured individuals whose performance was temporarily suppressed.

CONCLUSIONS

These findings suggest that reading performance may be affected by severe TBI and that the WTAR may underestimate premorbid IQ when used in this context, which may cause clinicians to underestimate the cognitive deficits experienced by these patients.

Hippocampus, amygdala and global brain changes 10 years after childhood traumatic brain injury

Traumatic brain injury (TBI) in children results in damage to the developing brain, particularly in severely injured individuals. Little is known, however, of the long-term structural aspects of the brain following childhood TBI. This study investigated the integrity of the brain 10 years post-TBI using magnetic resonance imaging volumetrics in a sample of 49 participants with mild, moderate and severe TBI, evaluated against a normative sample of 20 individuals from a pediatric database with comparable age and gender distribution. Structural integrity was investigated in gray and white matter, and by manually segmenting two regions of interest (hippocampus, amygdala), potentially vulnerable to the effects of childhood TBI. The results indicate that more severe injuries caused a reduction in gray and white brain matter, while all TBI severity levels resulted in increased volumes of cerebrospinal fluid and smaller hippocampal volumes. In addition, enlarged amygdala volumes were detected in severely injured patients compared to their mild and moderate counterparts, suggesting that childhood TBI may disrupt the development of certain brain regions through diffuse pathological changes. The findings highlight the lasting impact of childhood TBI on the brain and the importance of monitoring brain structure in the long-term after early injury.

Phase shift and correlation coefficient measurement of cerebral autoregulation during deep breathing in traumatic brain injury (TBI)

BACKGROUND

Impairment of cerebral autoregulation is known to adversely affect outcome following traumatic brain injury (TBI). The phase shift (PS) method of cerebral autoregulation (CA) assessment describes the time lag between fluctuations in arterial blood pressure (ABP) and cerebral blood flow velocity (CBFV) in the middle cerebral artery. An alternative method (Mx-ABP) is based on the statistical correlation between ABP and CBFV waveforms over time. We compared these two indices in a cohort of severely head injured patients undergoing controlled, 6-breaths-per-minute ventilation.

METHODS

PS and Mx-ABP were calculated from 33 recordings of CBFV and MAP in 22 patients with TBI. Spearman's correlation coefficient was used to assess the agreement between PS and Mx-ABP. The relationship between ICP slow wave amplitude, MAP slow wave amplitude and mean ICP was also examined.

FINDINGS

Mean values for Mx-ABP and PS were 0.44 +/- 0.27, and 49 +/- 26 (degrees), respectively. PS correlated significantly with Mx-ABP (r = -0.648, p < 0.001). A Bland-Altman plot of normalised Mx-ABP and Phase Shift values showed no significant bias or relationship (mean difference = 0.0004, r = -0.037, p = 0.852). During the test procedure, ICP fluctuated in an approximately sinusoidal fashion, with a mean amplitude of 4.96 +/- 2.72 mmHg (peak to peak). The magnitude of ICP fluctuation during deep breathing correlated weakly but significantly with mean ICP (r = 0.391, p < 0.05) and with the amplitude of ABP fluctuations (r = 0.625, p < 0.0005).

CONCLUSIONS

Phase shift and Mx-ABP in TBI are well correlated. Deep breathing presents as an effective tool with which to assess autoregulation using the phase shift method.

Transcallosal resection of hypothalamic hamartoma for gelastic epilepsy

INTRODUCTION

Hypothalamic hamartomas (HHs) are commonly associated with severe epilepsy resistant to anticonvulsant therapy. Historically, surgical resection of HHs resulted in considerable morbidity.

DISCUSSION

Two series of patients who successfully underwent resection using a transcallosal approach have now been published; we report the first UK experience of this technique in a series of five patients with HHs and gelastic epilepsy resistant to anticonvulsant therapy. Patients were assessed pre- and postoperatively for seizure activity, endocrine function, ophthalmology, and neurocognitive function. Two patients had precocious puberty and all had evidence of developmental delay and behavioral problems. Postoperatively, all children experienced at least a 50% reduction in seizure frequency with abolition of major seizure types; one child remains seizure-free. One child developed a mild postoperative right hemiparesis and one developed transient diabetes insipidus.

CONCLUSION

There were no adverse developmental effects of surgery. Transcallosal resection of HHs ameliorates resistant epilepsy syndromes associated with HH.

Glioblastoma of the optic chiasm

Primary malignant gliomas of the optic nerve and chiasm are rare, and are usually rapidly fatal in adults. We report a 48-year-old woman with a glioblastoma multiforme arising from the optic chiasm. Following radiotherapy, our patient survived nearly 14 months, which is the longest survival reported in patients with this diagnosis. There have only been four other reports of glioblastoma multiforme arising from the optic chiasm as distinct from secondary involvement of the chiasm, in the last 40 years.

Open depressed and penetrating skull fractures in Port Moresby General Hospital from 2003 to 2005

BACKGROUND

Open wounds to the head with skull bone depression pose the potential for serious injuries to the brain parenchyma and an increased risk of infection. The treatment of these injuries aims to repair the breached dura as well as remove any nidus for infection. Open wounds to the head due to bullets pose special problems and have a high fatality rate.

AIM

To review the presentation, management and outcome of depressed and penetrating open fractures of the skull in Port Moresby.

METHOD

All cases seen from 2003 to 2005 were included. All were managed without a CT (computed tomography) scan. Their Glasgow Outcome Scale (GOS) was documented on discharge.

RESULTS

There were 340 traumatic brain injury (TBI) cases over a period of 3 years between 2003 and 2005 managed by the Neurosurgery Unit of Port Moresby General Hospital. The open depressed and penetrating skull fractures seen in these cases numbered 46 (14%), of which 42 were males and 4 females. The weapons most commonly used were blunt objects (16), knives (11), guns (6) and axes (4). Gunshots contributed to 4 of the 7 deaths. 4 out of the 7 deaths were due to primary brain injury and 3 were due to infection.

CONCLUSION

Open depressed fractures and penetrating injuries form a small but significant group in the management of head injuries. The use of blunt objects, firearms and arrows coupled with increasing urban violence is responsible for most of these injuries. The outcome of patients admitted who are fully conscious is expected to be good. They can be managed by prompt debridement of the wound, elevation of the fracture and removal of fragments as appropriate. However, the mortality rate is high in those with a Glasgow Coma Score of 8 or less on admission, a finding indicative of the severity of brain injury beneath the wound.

Big heads in Port Moresby General Hospital: an audit of hydrocephalus cases seen from 2003 to 2004

BACKGROUND

Hydrocephalus is a common neurosurgical problem in Port Moresby General Hospital (PMGH) contributing to 27 (24%) of the 114 neurosurgical operations done in 2003 and 2004. During the same period it was responsible for 25% of the cases seen in the neurosurgery clinic.

AIM

To prospectively audit and follow up hydrocephalus cases in PMGH over 2 years from January 2003 to December 2004 and ascertain the causes and the outcome of treatment.

METHOD

All cases of hydrocephalus seen in 2003 and 2004 were categorized according to cause. The associated findings on ultrasound scan or CT (computed tomography) scan when available were noted. The subsequent progress was documented with and without treatment for at least 6 months.

RESULTS

61 cases of hydrocephalus were seen for surgical opinion. The age ranged from 4 weeks to 56 years. The commonest age group affected was in the first year of life (61% of cases). There were 34 cases (56%) of congenital hydrocephalus followed by 19 (31%) post meningitis and 8 (13%) due to tumour. There was only one case of myelomeningocele with concomitant hydrocephalus. Ventriculoperitoneal (VP) shunts were inserted in 24 cases. 3 shunts were bypasses from the posterior horn to the cisterna magna, making a total of 27 shunt operations. 9 shunts were performed for post-meningitic hydrocephalus, 15 for congenital stenosis and 3 for a posterior fossa tumour. 24 out of the 27 shunt operations were in children aged <9 months. Post-VP-shunt infection of 2 cases reported within 6 weeks of operation gave an infection rate of 7%. There was cerebrospinal fluid (CSF) leak in 2 cases with Pundez-type shunts. There were 2 shunt blocks needing revision.

CONCLUSION

Shunt operations can be done in PMGH with good outcomes. The decision-making about surgery can be made on the basis of the enlarging head and the ultrasound findings.

Surgical management of spinal tuberculosis in Papua New Guinea

Two cases of spinal tuberculosis (TB) presented with deteriorating myelopathy despite chemotherapy. Surgery of anterior decompression and fusion was successfully carried out resulting in both the patients ambulating and being continent on discharge. This highlights the importance of early surgery and a multidisciplinary approach to the management of this condition.

Trends in traumatic brain injury outcomes in Port Moresby General Hospital from January 2003 to December 2004

BACKGROUND

Traumatic brain injury (TBI) has been responsible for 25-30% of surgical deaths in Port Moresby General Hospital (PMGH) over the last 30 years despite being responsible for only 5% of the admissions.

AIM

To document the epidemiology of TBI over a period of two years from 2003 to 2004 and compare this to the previous two decades in PMGH and elsewhere. The treatment and outcome of TBI cases are analyzed.

METHODS

All TBI cases were included from January 2003 to December 2004. The Glasgow Coma Score (GCS) and Glasgow Outcome Scale (GOS) were documented at admission and discharge. These cases were followed up in the outpatient department for at least 6 months.

RESULTS

There were 262 cases of TBI admitted between January 2003 and December 2004. There were 31 deaths during this period. 28 deaths were in the severe TBI category (GCS 3-8) and 3 in the moderate category (GCS 9-12).

CONCLUSION

The case fatality rate of severe TBI has been reduced from 60% to just below 30% over the period of 2 years. The formation of a single unit managing TBI over two years may be one factor contributing to this improvement. Interpersonal violence has replaced motor vehicle accidents as the leading cause of death from TBI.

A review of the current management of severe traumatic brain injury

Traumatic brain injury accounts for up to half of trauma related fatalities. This review describes current management practices including pre-hospital care, surgical interventions and various treatment modalities for intracranial hypertension. The lack of class I evidence for the majority of interventions is highlighted.

The role of decompressive craniectomy in the management of traumatic brain injury: a critical review

Brain swelling and intracranial hypertension following severe head injury are known to contribute to secondary brain damage, and have been shown to adversely affect patient outcome. The use of unilateral craniectomy following the evacuation of a mass lesion, such as acute subdural haematoma or traumatic intracerebral haematoma, is accepted practice. The following review focuses on a bi-fronto-temporal decompressive craniectomy, used as an isolated operation for the control of intracranial hypertension, secondary to diffuse brain swelling refractory to medical management. Though the operation is being increasingly used, current opinion is still divided regarding its overall effects on outcome. This review examines the experimental and clinical evidence for and against the use of decompressive craniectomy, highlights the lack of class I evidence relevant to this topic and emphasises the necessity for well-designed prospective randomised controlled trials.

Identifying factors contributing to child and family outcome 30 months after traumatic brain injury in children

OBJECTIVE

To examine the contributions of injury severity, physical and cognitive disability, child and family function to outcome 30 months after traumatic brain injury (TBI) in children.

DESIGN

A prospective, longitudinal, between group design, comparing function before and after injury across three levels of injury severity.

SUBJECTS

One hundred and fifty children, 3.0-12.11 years old, admitted to hospital with a diagnosis of TBI. The sample was divided according to injury severity: mild (n = 42), moderate (n = 70), severe (n = 38). Children with a history of neurological, developmental, and psychiatric disorders were excluded from participation.

MAIN OUTCOME MEASURES

Post injury physical function, cognitive ability (incorporating intellect, memory, and attention), behavioural and family functioning, and level of family burden.

RESULTS

A dose-response relation was identified for injury severity and physical and cognitive outcome, with significant recovery documented from acute to six months after TBI. Behavioural functioning was not related to injury severity, and where problems were identified, little recovery was noted over time. Family functioning remained unchanged from preinjury to post injury assessments. The level of family burden was high at both six and 30 months after injury, and was predicted by injury severity, functional impairment, and post injury child behavioural disturbance.

CONCLUSIONS

These results suggest ongoing problems for the child and significant family burden 30 months after TBI. The nature and severity of the physical and cognitive problems are closely related to injury severity, with child and family function predicted by psychosocial and premorbid factors.

Evaluation of Management of Road Trauma Survivors with Brain Injury and Neurologic Disability in Victoria

BACKGROUND

Victoria recently established a new trauma care system following the Consultative Committee's findings on frequent preventable deaths after road crash injury. This study investigates the contribution to neurologic disability of preventable deficiencies in health care in survivors of road crashes occurring from 1998 to 1999.

METHODS

The emergency and clinical management of 60 road crash survivors with head Abbreviated Injury Scale score > or = 3 and residual neurologic disability were evaluated by analysis and multidisciplinary discussion of their complete prehospital, hospital, and rehabilitation records.

RESULTS

The mean number of potentially preventable errors or inadequacies per patient was 19.2 +/- 7.5, with 10.5 +/- 7.2 contributing to neurologic disability. The mean number contributing to neurologic disability was greatest in the emergency room (3.5 +/- 3.2), followed by the intensive care unit (2.2 +/- 2.7) and the prehospital setting (1.8 +/- 2.0). Eighty-four percent of the deficiencies were management errors/inadequacies and 7% were system inadequacies. Fifty-five percent of deficiencies contributed to neurologic disability. In patients with a systolic blood pressure less than 90 mm Hg with hypovolemia consequent to inadequate resuscitation, the frequency of severe neurologic disability was increased almost twofold (p < 0.05). Deficiencies contributing to neurologic disability were significantly less frequent in university teaching hospitals with neurosurgical units.

CONCLUSION

Improvement in neurologic outcomes can be achieved through appropriate triage and increased attention to basic principles of trauma and head injury care.

Generalized epilepsy in hypothalamic hamartoma: evolution and postoperative resolution

OBJECTIVE

To better understand the epileptogenesis of symptomatic generalized epilepsy in patients with hypothalamic hamartoma and intractable epilepsy, many of whom experience remission of generalized seizures and slow spike-wave discharges following surgery.

METHODS

The authors documented the evolution of symptomatic generalized epilepsy in 12 of 20 children who underwent transcallosal microsurgical hypothalamic hamartoma resection. In seven patients they recorded intraoperative EEG from the hamartoma and simultaneously from the scalp and frontal cortex before, during, and after resection.

RESULTS

Gelastic seizures began on average at 6 months of age (range birth to 3 years); tonic seizures began at 6 years (range 2 months to 9 years). Normal EEG were reported in early childhood; thereafter, abnormalities were progressive. Interictal spike-wave was recorded intraoperatively over the scalp and cortex in six patients, but not from the hypothalamic hamartoma. Hamartoma resection had no immediate effect on cortical spike-wave, but waking spike-wave was absent in seven patients on subsequent postoperative EEG. Tonic seizures ceased in 11 of 12 patients, but 6 of these had postoperative generalized seizures that resolved over 1 to 6 months.

CONCLUSION

Gelastic seizures in hypothalamic hamartoma arise from the hamartoma itself; the interictal spike-wave does not. The evolution of EEG abnormalities, the development of generalized seizures years after onset of gelastic seizures, and the postoperative running down of interictal spike-wave and generalized seizures in these patients may reflect secondary epileptogenesis.

James IV Lecture. Epilepsy surgery, hypothalamic hamartomas and the quest for a cure

This presentation reviews the epidemiology of epilepsy, the evolution of epilepsy surgery, the selection of cases for surgery, the range and results of epilepsy surgery, and the future development of this burgeoning field. Hypothalamic hamartoma (HH) is a rare developmental lesion which causes intractable gelastic epilepsy which is refractory to medical therapy. Hypothalamic hamartoma presents a formidable surgical challenge. The application of a midline transcallosal interforniceal approach to resect the HH from within the third ventricle, in a series of 28 patients, is presented. This has produced excellent results with minimal morbidity. This surgery is placed within the context of epilepsy surgery in general.

Endovascular management of vein of Galen aneurysmal malformations presenting in the neonatal period

BACKGROUND AND PURPOSE

Neonates with vein of Galen aneurysmal malformations (VGAMs) presenting with cardiac failure have high morbidity and mortality, and outcomes are significantly better in those presenting in later childhood. Neurologic outcomes in survivors are perceived to be uniformly poor, which may lead to the neonate being denied treatment. We assessed outcomes of modern neonatal intensive care and endovascular embolization in a consecutive series of such neonates presenting with cardiac failure.

METHODS

Between 1996 and 1998, five infants (three male, two female) were diagnosed with symptomatic VGAMs in the first week of life, four of whom had intractable, high-output cardiac failure and underwent initial endovascular treatment. There were 15 endovascular procedures and one neurosurgical clipping in these five patients. Transarterial and transvenous routes were required, using multiple embolic agents. We emphasized the use of sonographically guided, percutaneous transtorcular-venous-access, moveable-core guidewire as an embolic agent; routine MR imaging; and MR angiography.

RESULTS

Immediate outcomes included control of cardiac failure with normal neurologic function in four (80%) patients and one (20%) death from intractable cardiac failure. On follow-up examination, three (60%) infants showed no evidence of neurologic abnormality or cardiac failure; one (20%) infant showed moderate developmental delay. Two have had no further shunting on angiography, one has minimal flow, and one is awaiting follow-up imaging.

CONCLUSION

Endovascular therapy with modern neuroanesthetic and neurointensive care can provide good outcomes even in the highest-risk neonates with VGAMs and cardiac failure. If medical management of cardiac failure fails, and there is no evidence of gross cerebral parenchymal damage on imaging, urgent endovascular treatment is feasible and can reduce the almost-100% mortality otherwise expected, without invariably severe morbidity. Use of multiple embolization strategies in multiple stages usually is necessary in these patients, and novel approaches and embolic agents may be necessary.

Awake craniotomy in an adolescent

We present our approach to management of awake craniotomy for epilepsy surgery for an adolescent. The importance of patient selection and preoperative preparation is stressed. Anaesthetic management included regional scalp block and preincisional surgical infiltration of local anaesthetic and light sedation with propofol, fentanyl and midazolam. The patient remained responsive to voice for all but a small part of the procedure.

Transcallosal resection of hypothalamic hamartomas, with control of seizures, in children with gelastic epilepsy

OBJECTIVE

Hypothalamic hamartomas (HHs) are associated with precocious puberty and gelastic epilepsy; the seizures are often refractory to antiepileptic medications and associated with delayed development and disturbed behavior. The current opinion is that surgery to treat intrahypothalamic lesions is formidable and that complete excision is not technically achievable. We report our experience with a transcallosal approach to the resection of HHs.

METHODS

Five children (age, 4-13 yr) with intractable epilepsy and HHs underwent preoperative clinical, electroencephalographic, and imaging evaluations. Two patients experienced only gelastic seizures, and three patients experienced mixed seizure disorders with drop attacks; all experienced multiple daily seizures. Patients were evaluated with respect to seizures, cognition, behavior, and endocrine status 9 to 37 months (mean, 24 mo) after surgery. The HHs were approached via a transcallosal-interforniceal route to the third ventricle and were resected using a microsurgical technique and frameless stereotaxy.

RESULTS

Complete or nearly complete (>95%) excision of the HHs was achieved for all patients, with no adverse neurological, psychological, or visual sequelae. Two patients experienced mild transient diabetes insipidus after surgery. Two patients developed appetite stimulation, but no other significant endocrinological sequelae were observed. Three patients are seizure-free and two patients have experienced only occasional, brief, mild gelastic seizures after surgery, all with reduced antiepileptic medications. On the basis of parental reports and our own subjective observations, the children also exhibited marked improvements in behavior, school performance, and quality of life.

CONCLUSION

Complete or nearly complete resection of HHs can be safely achieved via a transcallosal approach, with the possibility of seizure freedom and neurobehavioral improvements.

Frontoethmoidal encephaloceles: reconstruction and refinements

Frontoethmoidal encephaloceles are herniations of the intracranial contents through a defect in the skull at the junction of the frontal and ethmoidal bones. They are generally classified as nasofrontal, nasoethmoidal, and naso-orbital, although there may be some overlap or multiplicity. The records of 35 patients treated for frontoethmoidal encephaloceles were examined. Of these, 12 cases with complete and accurate medical records were evaluated in detail. The successful correction of frontoethmoidal encephaloceles was shown to depend on the following: a detailed understanding of the pathological anatomy (such as interorbital hypertelorism rather than true orbital hypertelorism and the presence of secondary trigonocephaly), careful planning of the bone movements to correct these deformities, and attention to detail regarding the placement of scars, positioning of the medial canthi, and the nasal reconstruction. Avoiding the "long-nose" deformity often seen after repair should be a priority. In general, the authors recommend a one-stage repair with both a transcranial and external approach.

Upper cervical spinal cord injury in neonates: the use of magnetic resonance imaging

Neonatal upper cervical spinal cord injury is associated with rotational forceps delivery and presents with quadriparesis and diaphragmatic paralysis. The underlying pathology determines neurologic outcome but is difficult to assess clinically or with simple radiographic techniques. We report 4 cases in which early magnetic resonance imaging demonstrated the extent and severity of the injury and guided management.

The preventability of death in road traffic fatalities with head injury in Victoria, Australia. The Consultative Committee on Road Traffic Fatalities

Since 1992 the Consultative Committee on Road Traffic Fatalities in Victoria (CCRTF) has examined the medical management of patients who died following motor vehicle accidents. Three hundred and fifty-five fatalities with head injury occurring between 1 July, 1992 and 31 December 1997 were assessed by the CCRTF. They represented 79% of the total 449 fatalities examined by the Committee. Following examination of the complete medical records and multidisciplinary discussion, the Committee considered 237 (67%) of the 355 neurotrauma deaths to be non-preventable, 105 (30%) potentially preventable and 13 (4%) preventable. The present analysis excludes the non-preventable deaths in order to focus on preventable factors. Problems identified in the 118 patients pre-hospital included: no intubation; prolonged scene time; and no intravenous access; in 139 emergency room attendances: inappropriate reception including delay in arrival of a consultant, no neurosurgical consultation, no CT scan of the head, inadequate blood gases and oxygen monitoring, inadequate fluid resuscitation, delayed respiratory resuscitation and delayed dispatch to the operating room; in 111 operating room visits: no ICP monitoring, inadequate fluid administration and inappropriate anaesthetic technique; and in 90 intensive care unit admissions: no ICP monitoring. Overall, 1745 individual problems in the various areas of care were identified, of which 1104 (63%) were judged to have contributed to death. Improved delivery and quality of trauma care could reduce the identified problems in emergency services and clinical management. Basic principles of trauma management remain the most important means of reducing morbidity and death following road trauma. The leadership role of the neurosurgeon in neurotrauma care is emphasised.

Tension pneumo-orbitus and pneumocephalus induced by a nasal oxygen cannula: report on two paediatric cases

The present paper highlights the potential dangers of misplaced nasopharyngeal oxygen cannulae causing secondary pneumo-orbitus and pneumocephalus in two paediatric patients. While this complication is uncommon, early recognition allows prompt and appropriate intervention, with cessation of nasal oxygen, cannula removal, early investigation with computed tomography (CT) head/orbit scan and orbital or cranial decompression, if required. Early CT imaging identifies medial orbital or paranasal sinus fractures, the presence of sinusitis, associated intracranial air and assessment of the degree of orbital or intracranial tension. Antibiotics are not usually required for this type of clean injury unless pre-existing sinusitis is identified. In both cases, direct orbital decompression was performed with excellent results after identification of marked unilateral tense exophthalmos, delayed pupillary reactions to light and ophthalmopegia.

The efficacy of spinal cord stimulation for chronic pain

A prospective study was undertaken to evaluate the efficacy of spinal cord stimulation (SCS) in the management of chronic pain syndrome. The study included all patients who underwent this procedure at the Royal Melbourne Hospital and the Melbourne Private Hospital over a period of two years. A total of 29 patients were managed by the end of June 1996. These patients were carefully screened by a neurosurgeon (JVR) and a psychiatrist. Of these, 26 patients had a follow up evaluation at the end of August 1996. From the group of 29 patients, four patients failed to obtain any relief during the trial phase of the procedure and thus did not have the stimulator implanted permanently. From the 25 patients who proceeded to have the stimulator implanted, 11 patients had a variable beneficial response, three patients found it to be of marginal benefit, six had no benefit, three patients initially had a good response but subsequently gained no benefit whilst two patients were uncertain of its benefit. It thus appears that SCS was of benefit in 50% of our carefully selected patients with chronic pain syndromes.

Neurosurgery at the Royal Melbourne Hospital

The Department of Neurosurgery of the Royal Melbourne Hospital (RMH) is a major neurosurgery program and academic leader in Australasia. In 1998, the RMH marked its 150th anniversary. The department of neurosurgery was established in 1945 under the direction of R.S. Hooper and has produced many distinguished neurosurgeons since its founding. The department is currently directed by Andrew Kaye, who is also the James Stewart Professor of Surgery at the University of Melbourne. In 1997-1998, the neurosurgery department received 2930 admissions and performed 2225 operations, with 11 neurosurgeons on staff and a strong focus on subspecialization. The neurosurgeons have varying time commitments to the hospital and to research, but many are on site full-time. The RMH is a university teaching hospital as well as a public hospital; therefore, there is no financial burden for any patient. The RMH is closely linked to the adjacent Melbourne Private Hospital, where privately insured patients are treated. The department of neurosurgery maintains close links with the departments of neurology, ophthalmology, and neuropsychiatry, which together form the Melbourne Neuroscience Centre. There is a strong emphasis on undergraduate and postgraduate teaching, as well as clinical and laboratory research. Neurosurgery trainees are encouraged to undertake laboratory research and pursue higher academic degrees. Despite economic restraints, the department continues to grow in strength, and we remain optimistic of exciting times ahead for neurosurgery at the RMH in the new millennium.

Physiological localisation in functional neurosurgery for movement disorders: a simple approach

Controversy exists between anatomical methods and single cell recording as the preferred approach in target localisation in functional neurosurgery for movement disorders. The controversy centres on accuracy as compared to practicality. We describe a mapping technique of semi-microstimulation utilising threshold measurements which has been used in 66 procedures in 50 subjects. We compared the accuracy of anatomical localisation with the final chosen target using the above technique. We also compared the benefit, the side effects and the surgical complication rate with published data on single cell recording and anatomical localisation. The mean difference in 3-dimensional space between the anatomical target and the physiological target was 6.85 mm (P < 0.0001). A good response was obtained in 80% of procedures. Mortality was 1.5%. The surgical complication rate was 1.5%. Mild side effects, serious side effects, transient side effects and permanent side effects were evident in 4.5%, 10.6%, 6.1% and 9.1% of procedures. These figures compared better than anatomical studies and similar to single cell recording studies. It is concluded that this approach provides both accuracy and simplicity and is recommended as a compromise to the currently available methods.

An unusual cause of back pain

This case describes what may become an increasingly common clinical problem in Australia as the proportion of our population originally derived from South East Asia, ages. Our patient was of Chinese origin and presented with back pain which was eventually found to be due to metastatic disease from an otherwise silent hepatoma, in association with unrecognised chronic hepatitis B infection.

Pineal region tumours in childhood. A 30-year experience

Patients aged under 16 years presenting to the Royal Children's Hospital between 1967 and 1997 with pineal region tumours were retrospectively reviewed. Thirty-seven patients were identified, with 13 germinomas, 7 nongerminomatous germ cell tumours, 6 pineoblastomas, 2 pineocytomas, and 3 astrocytomas, while in 6 patients no histopathological diagnosis was obtained. The most common presentation was with symptoms of raised intracranial pressure due to hydrocephalus. Thirty-two of the 37 patients required a shunt. Thirteen had a biopsy as a separate procedure, 3 of which were stereotactic. Tumour excision was performed in 21 patients and was complete in 4 and subtotal in 17. There were 2 perioperative deaths and 6 patients who were neurologically worse after surgery. Twenty-six patients had radiotherapy and 16 chemotherapy, with significant complications of radiotherapy in half of the patients who received it. The 5-year survival of patients with benign tumours was 75%, 5-year survival with germinomas 62% and with other malignant tumours 14%. This series demonstrates significant improvements in management of pineal region tumours in the last 30 years and highlights some of the current controversies. A collaborative research approach is necessary to determine optimal management of the varied tumour types occurring in the pineal region in childhood.

Military surgery in Rwanda

BACKGROUND

In April of 1994, a vicious civil was erupted in Rwanda, with more than 500,000 people massacred by extremist militias. The second United Nations Assistance Mission in Rwanda (UNAMIR II) deployed in August 1994 to monitor the ceasefire, with an Australian Defence Force Contingent of Health Service Support consisting of staff for the UNAMIR Head-quarters, and the Australian Medical Support Force (AS MSF).

METHODS

A retrospective audit was conducted of all operative surgery performed during the year-long deployment, in the AS MSF operating theatres.

RESULTS

Twenty surgeons rotated through in 6-week intervals. A total of 750 operations were performed on 547 patients, of which 636 (84.8%) involved civilians. A total of 558 (74.4%) cases were the result of trauma both accidental (38.4%) and war related (36%). The mean age of patients was 21.7 years. The age distribution was skewed, with 289 (38.5%) cases being performed on children. General surgeons performed a wide range of surgery, covering the majority of surgical specialties. These included cardiothoracic, neurosurgical, vascular and paediatric cases. Orthopaedic surgeons dealt with amputations, debridements and skin grafting in addition to bony injuries and infections. Children formed a substantial number of those treated, and required surgery for war-related injuries significantly more often than adults.

CONCLUSIONS

Surgeons involved in future peacekeeping missions should be aware of the broad variety of clinical problems encountered, and undertake refresher training in the sub-specialties. Children are at great risk of violence in war, and if a civilization can be judged by the protection it affords its helpless, the Rwandan genocide and ensuing civil war represents a horrific example of the opposite extreme.

Neurosurgery in Vietnam

BACKGROUND

The development and current state of Vietnamese neurosurgery is presented, in order to highlight the difficulties faced by neurosurgeons in Vietnam and other developing countries.

METHODS

Information has been collected personally by the authors in Vietnam.

RESULTS

The conditions of neurosurgery endured by our neurosurgical colleagues in Vietnam are far inferior to those in the developed world, particularly in terms of training, educational aids, investigative and operating room equipment, and postoperative and rehabilitative care.

CONCLUSIONS

The recent formation of the Neurosurgical Society of Vietnam will help to improve these conditions, but help and encouragement from neurosurgeons in the developed world will also be of much value. The instigation of preventive strategies will likely make a significant impact on the health costs of neurotrauma in Vietnam.