Badrisyah Idris

Role of High Augmentation Index in Spontaneous Intracerebral Haemorrhage

BACKGROUND Intracerebral haemorrhage (ICH) is the most disabling and least treatable form of stroke. Its risk factors include old age, hypertension, diabetes mellitus, hypercholesterolaemia, smoking and high alcohol intake, which are also associated with arterial stiffness. The aim of the present study was to determine the prognostic value of high augmentation index (AI), which is a surrogate marker of arterial stiffness, in patients with spontaneous ICH. METHODS A prospective study of 60 patients with spontaneous supratentorial ICH was conducted. Outcome was assessed using the Modified Rankin Scale at 3 months follow-up. Data were collected on age and sex, risk factors for ICH, clinical parameters, laboratory parameters, radiological findings and hospital management. Logistic regression analysis was carried out to identify independent predictors of 3-month outcome and mortality. RESULTS Admission Glasgow Coma Scale score (OR, 0.7; 95% CI, 0.450-0.971; p = 0.035), total leukocyte count (OR,1.2; 95% CI, 1.028-1.453; p = 0.023) and haematoma volume (OR, 1.1; 95% CI, 1.024-1.204; p = 0.011) were found to be statistically significant in multivariate analysis of 3-month poor outcome. Factors independently associated with mortality were high AI (OR, 8.6; 95%CI, 1.748-40.940; p = 0.007) and midline shift (OR, 7.5; 95%CI, 1.809-31.004; p = 0.005). CONCLUSION Admission Glasgow Coma Scale score, total leukocyte count and haematoma volume were significant predictors for 3-month poor outcome; high AI and midline shift were significant predictors for 3-month mortality.

Functional MRI, Diffusion Tensor Imaging, Magnetic Source Imaging and Intraoperative Neuromonitoring Guided Brain Tumor Resection in Awake and Under General Anaesthesia

Neuroimaging has evolved from Computed Tomography (CT), CT-Positron Emission Tomography (CT-PET) and Magnetic Resonance Imaging (MRI) scanner in 1970s and 1980s to functional MRI (fMRI), Diffusion Tensor Imaging (DTI) and Magnetic Source Imaging (MSI) or Magnetoencephalography-MRI (MEG-MRI) fusion in 1990s and 2000s. Anatomical and functional neuroimages are currently regarded by most as vital in planning for brain tumors surgery. These anatomical and functional neuroimages can be fused and exported to the neuronavigation system in the operating theatre (Figure 1). Collectively, these images are known as extraoperative neuroimages. On the contrary, intraoperative neuroimages are images that obtained intraoperatively and can be exported regularly to the navigation system. The intraoperative images can be obtained by using either intraoperative CT (iCT), MRI (iMRI) or ultrasound [3D-iUS) [1-3]. Safer and successful brain tumors surgery requires not only neuroimages-guided surgery but also properly defined the eloquent (important and function‐ al) cortices and monitoring of the vital areas of the brain and other organs. Awake surgery with intraoperative brain mapping, and surgery under general anaesthesia with intraoperative monitoring (IOM) which are guided by neuroimages are two operative techniques for brain tumors that are currently regarded by most as gold standard [4-8]. This chapter describes the current functional neuroimaging modalities (fMRI, DTI and MSI), brain mapping, surgery

Neuronavigation-guided endoscopic management of a pineal region tumour with obscured floor of the third ventricle: case report.

BACKGROUND Shunt surgery is frequently chosen to manage periventricular metastasis of pineal region tumours which obscured the floor of the third ventricle. However, this procedure falls short due to distant metastasis. Neuronavigation-guided endoscopic surgery offers a viable alternative. PATIENT A 17-year-old man became symptomatic from widespread periventricular metastasis of a pineal region tumour which completely obscured the floor of the third ventricle. RESULTS Endoscopic tumour biopsy followed by neuronavigation-guided endoscopic third ventriculotomy was performed successfully. CONCLUSION This case report emphasizes the value of neuronavigation-guided endoscopic third ventriculostomy as a feasible surgical alternative for pineal region tumours with widespread periventricular metastasis that obscure the third ventricular floor.

The role of a high augmentation index in spontaneous intracerebral hemorrhage to prognosticate mortality.

The aim of the study was to determine the prognostic value of a high augmentation index, which was a surrogate marker of arterial stiffness in patients with spontaneous intracerebral hemorrhage. The outcome was divided into two groups in which the following data were collected in a computer running SphygmoCor CvMS software version 8.2. Logistic regression analysis was carried out among significant variables to identify an independent predictor of 6-month outcome and mortality. Sixty patients were recruited into the study. Admission Glasgow Coma Scale score (OR, 0.7; 95% CI, 0.450-0.971; P=0.035), total white cell count (OR, 1.2; 95% CI, 1.028-1.453; P=0.023) and hematoma volume (OR, 1.1; 95% CI, 1.024-1.204; P=0.011) were found to be statistically significant for identifying poor 6-month outcome in multivariate analysis. Factors independently associated with mortality were a high augmentation index (OR, 8.6; 95% CI, 1.794-40.940; P=0.007) and midline shift (OR, 7.5; 95% CI, 1.809-31.004; P=0.005). Admission Glasgow Coma Scale score, total white cell count and hematoma volume were significant predictors for poor 6-month outcome, and a high augmentation index and midline shift were predictors for 6-month mortality in this study.

Deep Brain Stimulation (DBS) for Movement Disorders: An Experience in Hospital Universiti Sains Malaysia (HUSM) Involving 12 Patients

Deep brain stimulation (DBS) was first introduced in 1987 to the developed world. As a developing country Malaysia begun its movement disorder program by doing ablation therapy using the Radionics system. Hospital Universiti Sains Malaysia a rural based teaching hospital had to take into consideration both health economics and outcomes in the area that it was providing neurosurgical care for when it initiated its Deep Brain Stimulation program. Most of the patients were from the low to medium social economic groups and could not afford payment for a DBS implant. We concentrated our DBS services to Parkinsons disease, Tourettes Syndrome and dystonia patients who had exhausted medical therapy. The case series of these patients and their follow-up are presented in this brief communication.

Pleomorphic xanthoastrocytoma in a case of tuberous sclerosis

Tuberous sclerosis is a known phakomatosis and the associated finding of a subependymal giant cell astrocytoma is common with this disorder. A case of tuberous sclerosis with a finding not previously reported, i.e. that of a pleomorphic xanthoastrocytoma, is presented here.

Epilepsy Surgery in Hospital Universiti Sains Malaysia: Our Experiences since 2004

Epilepsy surgery has been performed by a few centres in Malaysia, including Hospital Universiti Sains Malaysia (HUSM). To date, a total of 15 patients have undergone epilepsy surgery in HUSM. The epilepsy surgery included anterior temporal lobectomy (ATL) with amygdalohippocampectomy (AH) and Vagal nerve stimulation (VNS). The surgical outcomes of the patients were assessed using the International League Against Epilepsy (ILAE) outcome scale. The ILAE scores for patients who underwent ATL with AH were comparatively better than those who underwent VNS. One of the patient who underwent ATL with AH and frontal lesionectomy was found to have psychosis during follow up. Epilepsy surgery has proven to be an important treatment for medically resistant epilepsy. Thus it is important to raise public awareness regarding epilepsy and its treatment.

Autologous Cranioplasty Post-Operative Surgical Site Infection: Does It Matter if the Bone Flaps were Stored and Handled Differently?

Decompressive craniectomy (DC) is a potentially life-saving procedure and it remains the treatment of choice for medically refractory intracranial hypertension, most commonly in the setting of severe traumatic brain injury with large vessel infarction, and less frequently in cases of intra-operative brain swelling, aneurysmal subarachnoid haemorrhage and encephalitis (1). People who have survived the first intracranial insult must undergo subsequent cranial reconstructive surgery. Cranioplasty is considered to be a mandatory procedure, not only for cosmetic reasons, but also to protect the underlying brain to help ensure the potential for recovery of the injured brain (2). Reimplantation of the previously harvested autologous skull flap from DC is economical, and it provides an excellent anatomical fit (5). Complications of cranioplasty include infection, bone flap resorption, seizures and extra-axial haematoma (6). Postcranioplasty infection adds considerable burden to patient recovery; it also has significant economic implications, including prolonged antimicrobial treatment, unscheduled returns to the operation theatre for removal of the infected bone flaps and an additional cranioplasty procedure using more costly synthetic material. The two most common bone flap storage methods are cryopreservation, which involves storing the bone flaps in a bone freezer at a very low temperature, and storing the bone flaps in abdominal subcutaneous pockets. To date, studies comparing the outcomes of cranioplasty with cryopreserved and subcutaneously stored bone flaps have produced variable results; a significant deficiency in those studies is the lack of standardisation among the described techniques (7). The current prospective study aims to investigate surgical outcomes, specifically surgical site infection (SSI), associated with these two bone flap preservation methods, frozen versus subcutaneous pockets, as well as other risk factors, such as the timing of the cranioplasty, the indication and types of DC (unilateral versus bifrontal), the status of the operating surgeon and the number of repeated surgeries before cranioplasty.

Neuronavigation‑guided endoscopic and hodotopic approach to an arachnoid cyst

Background: Arachnoid cysts are intraarachnoid benign cystic lesions filled with cerebrospinal fluid and should be treated without incurring further morbidity to the patients. Case Description: The authors present a case of a 68-year-old elderly female with a large right fronto-parieto-temporal arachnoid cyst who has been suffering from mild left hemiparesis for the past 4 years and presented with sudden onset of seizures. The 3 Tesla MR system with diffusion tensor imaging (DTI) and MR tractography of the brain showed a large right fronto-parieto-temporal cystic lesion measuring 7 × 5 × 5 cm with a midline shift of 1 cm, suggestive of an arachnoid cyst with surrounding ipsilateral white matter projection pathways and inferior occipito-frontal fasciculus or inferior longitudinal white matter tracts. The cyst was successfully treated with neuronavigation-guided endoscopic and hodotopical approach to fenestrate the arachnoid cyst into the sylvian cistern, avoiding inadvertent injury to major white matter tracts portrayed by DTI. Postoperatively, a repeated computed tomography (CT) scan of the brain revealed a smaller arachnoid cyst with correction of the midline shift. The patient was weaned off from the ventilator and her hemiplegia improved gradually. Conclusion: This case report emphasizes the value of neuronavigation-guided endoscopic and hodotopic approach to fenestrate the intra-axial arachnoid cyst.

History of neurosciences at the School of Medical Sciences, Universiti Sains Malaysia.

Universiti Sains Malaysia is the only institution in Malaysia which incorporates all fields of the neurosciences under one roof. The integration of basic and clinical neurosciences has made it possible for this institution to become an excellent academic and research centre. This article describes the history, academic contributions and scientific progress of neurosciences at Universiti Sains Malaysia.