Publications by authors named "Simon Walling"

A woman in her mid-50s who had undergone a subtotal resection of a peritorcular meningioma 3 years earlier presented with symptoms suggestive of increased intracranial pressure. A delayed diagnosis of a torcular dural arteriovenous fistula (dAVF) diagnosis was made on MRI. Digital subtraction angiography confirmed a torcular dAVF (Borden type II).

View Article and Find Full Text PDF

Objectives: Off-road vehicle (ORV) and motorcycle use is common in Canada; however, risk of serious injury is heightened when these vehicles are operated without helmets and under the influence of alcohol. This study evaluated the impact of alcohol intoxication on helmet non-use and mortality among ORV and motorcycle crashes.

Methods: Using data collected from the Nova Scotia Trauma Registry, a retrospective analysis (2002-2017) of ORV and motorcycle crashes resulting in major traumatic brain injury was performed.

View Article and Find Full Text PDF

We describe reconstruction of a sternal cleft in a neonate using acellular dermal matrix, full-thickness calvarial bone graft and myocutaneous pectoralis flaps.

View Article and Find Full Text PDF

Due to resource restrictions related to the COVID-19 pandemic, many pediatric patients are facing substantial delays for surgery, potentially resulting in additional distress for caregivers. We aimed to assess the experiences and psychosocial distress of parents during COVID-19 as they relate to the pandemic, waiting for surgery, and the combined effects of both events. The was a cross-sectional qualitative study.

View Article and Find Full Text PDF
Article Synopsis
  • The study aimed to determine if new genetic variants contribute to moyamoya disease (MMD) in children without affected relatives by sequencing exomes of 28 children with MMD and their unaffected parents.
  • Researchers found three novel rare genetic variants linked to aggressive forms of MMD, often presenting early in childhood, along with other vascular issues like renal artery stenosis.
  • The findings suggest a new syndrome characterized by rare genetic mutations that disrupt crucial amino acids, leading to severe MMD symptoms before the age of three and affecting multiple arteries.
View Article and Find Full Text PDF

Objectives: Craniosynostosis is typically diagnosed and surgically corrected within the first year of life. The diagnosis and surgical correction of the condition can be a very stressful experience for families. Despite this, there is little research exploring the impact that craniosynostosis has on families, especially in the period immediately following diagnosis and correction.

View Article and Find Full Text PDF

Cerebellopontine angle (CPA) tumours account for 6-10% of intracranial tumours. The most common CPA tumours are vestibular schwannomas (VS), also known as acoustic neuromas, benign tumours of the vestibulocochlear nerve. Less common but symptomatic skull base lesions are glomus jugulare tumours (GJT), of which approximately 40% are identified as CPA tumours.

View Article and Find Full Text PDF

Background: The T2 hypointensity has been suggested to be associated with intracranial metastatic adenocarcinomas (IMA). The purpose of our study was to determine the association of T2 hypointensity with IMA.

Methods: All patients with pathologically confirmed metastatic brain tumors who had a magnetic resonance imaging (MRI) at our institution in the last 10 years were retrospectively assessed.

View Article and Find Full Text PDF

Purpose: A preliminary survey of pediatric neurosurgeons working at different centers around the world suggested differences in clinical practice resulting in variation in the risk of pediatric cerebellar mutism (CM) and cerebellar mutism syndrome (CMS) after posterior fossa (PF) tumor resection. The purposes of this study were (1) to determine the incidence and severity of CM and CMS after midline PF tumor resection in children treated at these centers and (2) to identify potentially modifiable factors related to surgical management (rather than tumor biology) that correlate with the incidence of CM/CMS.

Methods: Attending pediatric neurosurgeons at British Columbia's Children's Hospital (BCCH) and neurosurgeons who completed a pediatric neurosurgery fellowship at BCCH were invited to provide data from the center where they currently practiced.

View Article and Find Full Text PDF

Patients with vestibular schwannomas (VS) typically present with hearing loss and tinnitus as well as variable cranial nerve dysfunctions. Surgical resection, stereotactic radiotherapy and/or conservative management employing serial magnetic resonance or computed tomography imaging serve as the main treatment options. Quality of life (QoL) may be impacted by the extent of tumour burden and exacerbated or relieved by treatment.

View Article and Find Full Text PDF

Flanged ventricular catheters are now used infrequently. Many patients with longstanding hydrocephalus still harbor these catheters, either as their current ventricular catheter, or as a retained catheter from a prior implant. The removal of flanged ventricular catheters is sometimes necessary, and may be challenging due to intraventricular adhesions.

View Article and Find Full Text PDF

Background: Patients with vestibular schwannomas (VS) are faced with complex management decisions. Watchful waiting, surgical resection, and radiation are all viable options with associated risks and benefits. We sought to determine if patients with VS experience decisional conflict when deciding between surgery or non-surgical management, and factors influencing the degree of decisional conflict.

View Article and Find Full Text PDF
Article Synopsis
  • The study focuses on sagittal craniosynostosis, a condition causing a scaphocephalic head shape and typically corrected through early surgery in children.
  • Researchers aimed to assess the potential impact of this condition on health-related quality of life using validated utility measurement tools.
  • Results showed that participants rated the perceived burden of scaphocephaly significantly lower than that of monocular and binocular blindness, indicating that concerns over scaphocephaly may not warrant aggressive surgical intervention, particularly when aesthetic factors are involved.
View Article and Find Full Text PDF

Bicycle-related injuries are a leading cause of child and youth hospitalizations in Canada. The use of helmets while bicycling reduces the risk of brain injuries. This study investigated the long-term effect of legislation coupled with enforcement to improve helmet use rates.

View Article and Find Full Text PDF

Background: Glioblastoma multiforme (GBM) is known to have poor prognosis, with no available imaging marker that can predict survival at the time of diagnosis. Diffusion weighted images are used in characterisation of cellularity and necrosis of GBM. The purpose of this study was to assess whether pattern or degree of diffusion restriction could help in the prognostication of patients with GBM.

View Article and Find Full Text PDF

Background: Nova Scotia is the first jurisdiction in the world to mandate ski and snowboard helmet use for all ages at ski hills in the province. This study represents a longitudinal examination of the effects of social marketing, educational campaigns and the introduction of helmet legislation on all-age snow sport helmet use in Nova Scotia.

Methods: A baseline observational study was conducted to establish the threshold of ski and snowboarding helmet use.

View Article and Find Full Text PDF

Objective: To compare hearing preservation between stereotactic radiotherapy (SRT) and conservative treatment of patients with unilateral vestibular schwannoma.

Data Sources: Retrospective case series comparing hearing outcomes of patients with a unilateral vestibular schwannoma managed conservatively or with stereotactic radiotherapy in a tertiary care academic centre.

Patients: Tumor database patients with American Academy of Otolaryngology Head and Neck Surgery Class A or B hearing at the onset of study.

View Article and Find Full Text PDF

Ice skaters sustain a significant number of head injuries each winter. We are the first to implement an all-ages helmet policy at a university-based Canadian arena. We report our experience from a cross-sectional observational study as well as the policy's consequences on helmet use and skating participation.

View Article and Find Full Text PDF

Background: Transitioning from medical school to residency is difficult and stressful, necessitating innovation in easing this transition. In response, a Canadian neurosurgical Rookie Camp was designed and implemented to foster acquisition of technical, cognitive and behavioral skills among incoming Canadian post graduate year one (PGY-1) neurosurgery residents.

Methods: The inaugural Rookie Camp was held in July 2012 in Halifax.

View Article and Find Full Text PDF

Atrial fibrillation (A-fib) is the most common cardiac arrhythmia which is associated with an increased risk of mortality secondary to stroke and coronary artery disease. Intravenous glucocorticoid therapy (such as dexamethasone and hydrocortisone) is frequently used peri-operatively in patients undergoing cardiac surgery to prevent A-fib. Dexamethasone is also frequently used in patients with single or bilateral vestibular schwannomas (VS), to reduce tumor swelling both before and after radiation treatment.

View Article and Find Full Text PDF

Background: Radiation therapy (RT) is the major component of glioblastoma treatment; however, the time to initiate RT after surgical intervention varies between institutions. Our study examined the time from diagnosis to the initiation of RT and its effects on overall patient survival.

Methods: We retrospectively examined 267 patients with glioblastoma who received RT as part of their therapy in two Canadian tertiary care centers.

View Article and Find Full Text PDF

Objective: To examine whether adjuvant temozolomide treatment improved glioblastoma patients` survival in a large Canadian cohort.

Methods: We retrospectively studied 364 glioblastoma patients who received different modalities of treatment in 2 Canadian tertiary care centers in Edmonton and Halifax, Canada, between January 2000 and December 2006. The primary outcome was survival following the treatment protocol.

View Article and Find Full Text PDF

Background: In Canada, winter sports injuries are responsible for significant health care burden, with estimates of $400 million in direct and indirect annual health care costs. For ski-related injuries, helmets have been shown to provide significant protection. Current common practice in Canada, including the Province of Nova Scotia, is to leave the decision of whether to wear a helmet to the individual.

View Article and Find Full Text PDF