MyMedR

Perception of dental appearance using Index of Treatment Need (Aesthetic Component) assessments

Abdullah MS, Rock WP

Community Dent Health, 2002 Sep;19(3):161-5.

PMID: 12269462

To compare assessments of malocclusion made by an orthodontist with the perceptions of children and their parents.

Assessment of orthodontic treatment need in 5,112 Malaysian children using the IOTN and DAI indices

Abdullah MS, Rock WP

Community Dent Health, 2001 Dec;18(4):242-8.

PMID: 11789703

To assess the prevalence and severity of malocclusion in a large sample of 12-13-year-old children and to compare assessments of treatment need according to three methods.

The morphometric study of l3-L4 and L4-L5 lumbar spine in Asian population using magnetic resonance imaging: feasibility analysis for transpsoas lumbar interbody fusion

Yusof MI, Nadarajan E, Abdullah MS

Spine (Phila Pa 1976), 2014 Jun 15;39(14):E811-6.

PMID: 24825157 DOI: 10.1097/BRS.0000000000000368

Cross-sectional study on the measurement of relevant magnetic resonance imaging parameters in 100 patients presented for lumbar spine assessment.

Computed tomographic measurement of cervical pedicles for transpedicular fixation in a Malay population

Yusof MI, Ming LK, Abdullah MS

J Orthop Surg (Hong Kong), 2007 Aug;15(2):187-90.

PMID: 17709859

To measure the cervical pedicles and assess the feasibility of transpedicular fixation in a Malay population.

Intestinal parasites in Malaysian children with cancer

Menon BS, Abdullah MS, Mahamud F, Singh B

J Trop Pediatr, 1999 Aug;45(4):241-2.

PMID: 10467838

In this prospective study, we examined stool specimens from children with cancer receiving chemotherapy who were admitted for fever to the Universiti Sains Malaysia Hospital in Kota Baru, Kelantan. Stool specimens were examined for ova and cysts of parasites. Over a period of 15 months, there were 129 febrile episodes in 50 children with cancer and, in all, 237 stool specimens were examined. Sixty-six per cent of febrile episodes were associated with neutropenia and 9 per cent were associated with diarrhoea. Stool parasites were found in 42 per cent of children. The most common were helminths, followed by protozoa. Trichuris trichiura was the most common parasite (24 per cent), followed by Ascaris lumbricoides (22 per cent). Hookworm was found in 2 per cent. Giardia lamblia was found in 6 per cent of children, Blastocystis hominis in 4 per cent, and Cryptosporidium parvum in 2 per cent.

Assessment of the association between three pfmdr1 point mutations and chloroquine resistance in vitro of Malaysian Plasmodium falciparum isolates

Cox-Singh J, Singh B, Alias A, Abdullah MS

Trans R Soc Trop Med Hyg, 1995 7 1;89(4):436-7.

PMID: 7570891

Increased sensitivity of malaria detection by nested polymerase chain reaction using simple sampling and DNA extraction

Cox-Singh J, Mahayet S, Abdullah MS, Singh B

Int J Parasitol, 1997 Dec;27(12):1575-7.

PMID: 9467744

Malaria remains a disease of underdeveloped and remote regions of the world. The application of polymerase chain reaction (PCR) technology to malaria epidemiology has the potential for increasing our knowledge and understanding of this disease. In order to study malaria in all geographical locations it is important that specimen collection and DNA extraction for PCR be kept simple. Here we report a method for extracting DNA from dried blood spots on filter paper which is capable of detecting one Plasmodium falciparum and two Plasmodium vivax parasites/microliter of whole blood by nested PCR without compromising the simplicity of specimen collection or DNA extraction.

Fulltext The relevant intervention strategies for improving medication adherence of diabetic patients

Akoi C, Rahman MM, Abdullah MS

Int J Public Health Res, 2013;3(1):236-240.

MyJurnal

Medication adherence is very important for the effective treatment or control of various health problems, including chronic disease like diabetes mellitus (DM). However, medication non-adherence among diabetic patients on follow-up treatment is still a global health problem. This study aimed to identify factors associated with medication adherence and to determine methods on how it could be improved. A cross-sectional study was conducted on medication adherence among Malays, Iban and Melanau ethnic groups in Kota Samarahan and Sarikei, Sarawak using the Health Belief Model framework. Interviews with questionnaires, which were tested for its validity and reliability using the Cronbach’s Alpha, were conducted to collect data on the respondent’s socio-demographic and economic characteristics, and health beliefs of 442 respondents. Data was analyzed using SPSS version 17.0 for frequency distribution, measures of central tendencies, significance testing and logistic regression. The medication adherence rates were low in terms of all the treatment indicators such as amount of medication (31.7%), frequency (38.9%), duration (26%), and follow-up treatment (24.2%). The respondent’s socio-economic and economic characteristics have statistically significant association with medication adherence. The respondents adhered towards medication because they believed in its benefits. They also took their medication because they believed in the severity of DM and their susceptibility to its serious complications. The cues to action (medication taking) such as worrying about their socio-economic well-being, effectiveness of medication, and health campaign on diabetic control have influenced medication adherence. However, forgetfulness, distance of clinic, and costs of transport have caused medication non-adherence. The respondent's health beliefs in the benefits of taking medication, perceived severity and susceptibility to DM and its serious complications have contributed towards medication adherence. Their concerns about the socio-economic well-being, effectiveness of medication, and health campaign on diabetic control were positive cues to medication taking behavior. Therefore, modifying the respondent's related health beliefs and reinforcing the positive cues to actions are the relevant intervention strategies that could be used in improving medication adherence among diabetic patients.

The Morphometric Study of Degenerative Lateral Canal Stenosis at L4-L5 and L5-S1 Using Magnetic Resonance Imaging (MRI): Feasibility Analysis for Posterior Surgical Decompression

Yusof MI, Shif M, Abdullah MS

Malays Orthop J, 2015 Mar;9(1):4-10.

PMID: 28435587 MyJurnal DOI: 10.5704/MOJ.1503.015

This study was to evaluate the morphological features of degenerative spinal stenosis and adequacy of lateral canal stenosis decompression via unilateral and bilateral laminectomy. Measurements of facet joint angulation (FJA), mid facet point (MFP), mid facet point distance (MFPD), the narrowest point of the lateral spinal canal (NPLC) and the narrowest point of the lateral spinal canal distance (NPLCD) were performed. At L4L5 of the right and left side, the mean distance between the lateral border of the dura and MFP was 1.0 ± 0.2 cm and 1.0 ± 0.3cm respectively. The mean NPLC was seen at 0.7 ± 0.3 and 0.7 ± 0.3 cm cm from the dura. At L5S1 of the right and left side, the mean distance between the lateral border of the dura and MFP was 1.2± 0.2 and 1.3 ± 0.2 cm respectively. The mean NPLC was seen at 0.8 ± 0.4 and 0.9 ± 0.5 cm from the dura. Unilateral laminectomy may result in incomplete decompression.

Fulltext The Relationship amongst Intervertebral Disc Vertical Diameter, Lateral Foramen Diameter and Nerve Root Impingement in Lumbar Vertebra

Yusof MI, Hassan MN, Abdullah MS

Malays Orthop J, 2018 Mar;12(1):21-25.

PMID: 29725508 MyJurnal DOI: 10.5704/MOJ.1803.004

Introduction: The vertical diameter of the foramen is dependent upon the vertical diameter of the corresponding intervertebral disc. A decrease in disc vertical diameter has direct anatomic consequences to the foraminal diameter and area available for the nerve root passing through it. This study is to establish the relationship amongst the intervertebral disc vertical diameter, lateral foramen diameters and nerve root compression in the lumbar vertebra. Materials and Methods: Measurements of the study parameters were performed using sagittal MRI images. The parameters studied were: intervertebral disc vertical diameter (DVD), foraminal vertical diameter (FVD), foraminal transverse diameter (FTD) and nerve root diameter (NRD) of both sides. The relationship between the measured parameters were then analyzed. Results: A total of 62 MRI images were available for this study. Statistical analysis showed moderate to strong correlation between DVD and FVD at all the lumbar levels except at left L23 and L5S1 and right L3L4 and L4L5. Correlation between DVD and FTD were not significant at all lumbar levels. Regression analysis showed that a decrease of 1mm of DVD was associated with 1.3, 1.7, 3.3, 3.3 and 1.3mm reduction of FVD at L1L2, L2L3, L3L4, L4L5 and L5S1 respectively. Conclusion: Reduction of DVD was associated with reduction of FVD. However, FVD was relatively wide for the nerve root even with complete loss of DVD. FTD was much narrower than the FVD making it more likely to cause nerve root compression at the exit foramina. These anatomical details should be given consideration in treating patients with lateral canal stenosis.

Fulltext Intracranial metastatic neuroblastoma mimicking subdural empyema: an interesting case

Hairuddin NF, Musa AT, Abdullah MS

Malaysian Journal of Paediatrics and Child Health, 2016;22(1):66-70.

MyJurnal

Neuroblastoma is usually presented with abdominal distension. However, central nervous system manifestations of neuroblastoma are uncommon. In this case report, patient presented with uncommon presentation of neuroblastoma and the diagnostic dilemma.

Fulltext Metallic hair pin aspiration into the left tertiary bronchus

Noh KB, Salim R, Abdullah MS, Mohamad I

Malays Fam Physician, 2018;13(2):36-38.

PMID: 30302183

Foreign body aspiration is commonly described in infants and children. However, recently, a new high-risk group was identified among young women, especially those from the Muslim population who wear the traditional hair scarf. This is due to the habit of holding the scarf pin in between the lips to free hands to adjust the scarf more easily. Talking, laughing, or coughing while fixing the scarf may result in inadvertent inhalation of the pin into the tracheobronchial tree. We present a case of scarf pin inhalation and the challenges encountered in managing this patient during the successful removal of the pin via flexible bronchoscopy under fluoroscopy guidance. This particular case was technically challenging for us as the sharp tip of the needle was pointing upward and piercing the bronchial mucosa.

Fulltext Lumbar Spinal Stenosis: The Reliability, Sensitivity and Specificity of the Nerve Root Sedimentation Sign

Yusof MI, Azizan AF, Abdullah MS

Malays Orthop J, 2018 Jul;12(2):1-6.

PMID: 30112121 MyJurnal DOI: 10.5704/MOJ.1807.001

Introduction: This study is to evaluate the reliability, sensitivity and specificity of nerve root sedimentation sign (NRS) in our populations. The NRS is a radiological sign to diagnose lumbar spinal stenosis (LSS). It is claimed to be reliable with high sensitivity and specificity. Materials and Methods: A total of 82 MRI images from 43 patients in Group A (LSS) and 39 patients in Group B (non LSS) were analysed and compared for the presence of the NRS sign. Two assessors were used to evaluate intra and inter-assessor reliability of this sign based on 56 (33 patients, Group A and 23 patients, Group B). The findings were statistically analysed using SPSS software. Results: There was a significant association between spinal claudication and leg numbness with LSS (p<0.001 and Kappa=0.857, p<0.001). The inter-assessor reliability was also good (Kappa of 0.786, p<0.001). Conclusion: The NRS sign has high sensitivity and specificity for diagnosing LSS. The sign also has good intra and inter-assessor reliability.

Fulltext Angioarchitecture of brain arteriovenous malformations and the risk of bleeding: an analysis of patients in northeastern malaysia

Kandai S, Abdullah MS, Naing NN

Malays J Med Sci, 2010 Jan;17(1):44-8.

PMID: 22135525

Central nervous system arteriovenous malformation (AVM) is a vascular malformation of the brain and involves entanglement of veins and arteries without an intervening capillary bed. Affecting predominantly young male patients, AVM presents with different clinical manifestations namely headache, seizures, neurological deficit and intracranial haemorrhage. The patients who present acutely with intracranial bleeding have a significant morbidity and mortality. The aim is to study the angioarchitecture of brain AVM (BAVM) and determine the risk factors for intracranial bleeding. Ultimately, the goal of the study is to look for the association between volume of haematoma and architecture of BAVM.

Fulltext Effect of early neonatal exposure to deltamethrin on the purkinje cell number in rat cerebellum

Asari MA, Abdullah MS, Abdullah S

Malays J Med Sci, 2008 Jul;15(3):14-21.

PMID: 22570585 MyJurnal

Deltamethrin is a widely used insecticide belonging to the class of pyrethroid. Although the neurotoxicity of pyrethroids including deltamethrin is well established, it is still unclear whether exposure to deltamethrin during neonatal period has any deleterious effect on the survival of the Purkinje cells in the cerebellum. In the study, we investigated the total number of Purkinje cells in experimental rats exposed to deltamethrin using a stereological method, the fractionator. Deltamethrin in a dose of 1 mg/kg/day (corresponds to 20% of LD(50) ) was administered through oral gavage to male pups from 2(nd) to 5(th) postnatal day (PND). At PND 21 the animals were sacrificed and their cerebelli were removed. The cerebelli were systematically sampled using the fractionator method and stained with cresyl fast violet. The number of the Purkinje cells was counted for each cerebellum. The results showed that there was no significant difference in the total number of Purkinje cells in the deltamethrin-treated group as compared to the control animals. This suggests that deltamethrin exposure at the current dosage during the neonatal period do not have any significant effect on the survival of the Purkinje cells in the cerebellum.

Fulltext Non-detection of Acute Angiography-induced Cerebral Vasospasm by Transcranial Doppler Sonography amongst Patients with Subarachnoid Haemorrhage in Kelantan

Jamal R, Abdullah MS, Nik Jit NA

Malays J Med Sci, 2009 Oct;16(4):77-8.

PMID: 22135517 MyJurnal

Computed tomographic evaluation of the odontoid process for two-screw fixation in type-II fracture: a Malaysian perspective

Yusof MI, Yusof AH, Abdullah MS, Hussin TM

J Orthop Surg (Hong Kong), 2007 Apr;15(1):67-72.

PMID: 17429121

To measure the diameter of the odontoid process in a Malaysian population using computed tomographic (CT) scan and determine the feasibility of treating type-II odontoid fractures using 2 cortical screws.

Computerized tomographic measurement of the cervical pedicles diameter in a Malaysian population and the feasibility for transpedicular fixation

Yusof MI, Ming LK, Abdullah MS, Yusof AH

Spine (Phila Pa 1976), 2006 Apr 15;31(8):E221-4.

PMID: 16622365

The cervical pedicle diameter size differs between Asians and non-Asians. The authors studied the transverse pedicle diameter of the C2-C7 of the cervical spine in a Malaysian population using computerized tomography (CT) measurements. The transverse diameter of the pedicle is the determinant of the feasibility of this technique because the sagittal diameter of the pedicle has been wider than the transverse pedicle diameter.

Fulltext Computed Tomographic Morphometric Analysis of C1 and C2 for Lamina Cross Screw Placement in Malay Ethnicity

Chan AKH, Yusof MI, Abdullah MS

Asian Spine J, 2021 Feb;15(1):1-8.

PMID: 32252193 DOI: 10.31616/asj.2019.0242

STUDY DESIGN: This is an observational study of computed tomography (CT) data.

PURPOSE: The C1 and C2 laminas in the Malaysian Malay population were analyzed for the feasibility of fitting 3.5-mm laminar screws in a cross configuration.

OVERVIEW OF LITERATURE: Morphometric analysis of the C1 and C2 laminas has been performed for various populations but not for the Malaysian Malay population.

METHODS: A total of 330 CT cervical images were measured to establish the bicortical diameter of the C1 and C2 laminas as well as their height and length. The C1 posterior tubercle bicortical diameter and height were also determined from these images. All parameters were measured up to 0.1 mm, and statistical analysis was performed using IBM SPSS Statistics ver. 24.0 (IBM Corp., Armonk, NY, USA). An independent t -test and the Pearson chi-square test were used to determine the mean difference and screw acceptance.

RESULTS: The means of the C1 lamina measurements were 5.79±1.19 mm in diameter, 9.76±1.51 mm in height, and 20.70±1.86 mm in length. The means of the measurements of the posterior tubercle were 7.20±1.88 mm in diameter and 10.51±1.68 mm in height. The means of the C2 lamina measurements were 5.74±1.31 mm in diameter, 11.76±1.69 mm in height, and 24.96±2.56 mm in length. Overall 65.5% of C1 and 80.3% of C2 laminas are able to accept 3.5-mm screws in a cross configuration. Screw acceptability is similar between the right and left sides (p >0.05). However, males have a higher screw acceptability compared with females (p <0.05), except for the C2 left lamina.

CONCLUSIONS: It is feasible to insert a 3.5-mm screw in a cross configuration in the C1 and C2 laminas of the Malaysian Malay population, especially in males. However, a CT scan should be performed prior to the operation to determine screw acceptability and to estimate screw sizes.

Skull Base Primary Ewing Sarcoma: A Radiological Experience of a Rare Disease in an Atypical Location

Saifuddin MSAH, Ng CY, Abdullah MS

Am J Case Rep, 2021 Jun 05;22:e930384.

PMID: 34089579 DOI: 10.12659/AJCR.930384

BACKGROUND Ewing sarcoma and primitive neuroectodermal tumor are rare tumors grouped under the spectrum of the Ewing sarcoma family of tumors. These highly malignant tumors involve the bones and commonly occur in children. Ewing sarcoma of the skull bone accounts for only 1% of all Ewing sarcomas, with primary skull base Ewing sarcoma occurring in less than 1% of cases. We present a case of skull base Ewing sarcoma with complete symptom recovery and near-total radiological resolution. CASE REPORT A 4-year-old girl initially presented with a 2-month history of vomiting, poor oral intake, weight loss, and gradual visual deterioration followed by acute symptoms of fever, breathing difficulties, and seizure. Initial computed tomography and magnetic resonance imaging of the brain displayed a large sinonasal mass with extensive regional infiltration and bony destruction and no evidence of distant metastasis. A transnasal biopsy was taken. The histopathology result revealed features of skull base Ewing sarcoma. The child was given a combination of radiotherapy and chemotherapy, to which she responded well, with a minimal residual tumor. CONCLUSIONS Skull base Ewing sarcoma is a rare entity, presenting a challenge to the reporting radiologists. Differential diagnoses of esthesioneuroblastoma, olfactory neuroepithelioma, and, more commonly, sinonasal carcinoma can be misleading since they have similar radiological appearances to skull base Ewing sarcoma, which differs in treatment regimen and prognosis. Therefore, a combination of histopathological appearance, radiographic findings, and clinical correlation is important to determine the correct diagnosis, establish the appropriate treatment regime, and improve the patient's survival.

Displaying publications 1 - 20 of 64 in total