Displaying publications 101 - 120 of 5568 in total

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  1. Normalina M, Zainal M
    Med J Malaysia, 1998 Sep;53(3):239-44.
    PMID: 10968160
    A cross-sectional prevalence study amongst a nursing home elderly population was carried out at Rumah Sri Kenangan, Seremban, Negeri Sembilan between June 1995 until June 1996. A total of 204 cases of 60 years and older were examined in order to determine the ocular morbidity amongst them. It was found that 47.5% had low vision and 19.1% were legally blind. Cataract was found to be the leading cause of low vision and blindness occurring in 81.4% and 74.3% respectively. Glaucoma occurred in 1% of those who had low vision and none due to macular degeneration or diabetic retinopathy. The magnitude of visual impairment and blindness in this nursing home is high but is preventable and avoidable.
  2. Nik Mohd Polo Kinin NM, Wan Mohd Arif WI, Zainal Arifm A
    Med J Malaysia, 2004 May;59 Suppl B:23-4.
    PMID: 15468800
    The appearance of dental porcelains is comparable to natural teeth. This study discusses the effect of Y2O3 addition to the fluorescent property of dental porcelains. The composition of dental porcelains contained Y2O3 as the fluorescent agent and base frit. The combinations of Y2O3 added consist of a series with 0.5, 1.0, 1.5, 2.0 and 2.5 wt% respectively, based on the total composition. In the extreme condition, fluorescent agents are added from 5.0 up to 10.0 wt%. In order to enhance the fluorescent property of dental porcelains, an opacifiying agent, cerium oxide (CeO2) was also added to dental porcelains composition. The fluorescent property was determined using Spectroline EF-1400C/F that emits 240 nm wavelength ultraviolet light. The microstructure was examined by Scanning Electron Microscope (SEM). The result shows that, the fluorescent properties displayed are similar to natural teeth when subjected to ultraviolet light. SEM micrograph was able to show the fluorescent agent dispersed in glass phase. Increasing additions of Y2O3 gave the fluorescent properties near to natural teeth.
  3. Khang NC, Hanif H, Zainal Ariffin A
    Med J Malaysia, 2014 Jun;69(3):144-5.
    PMID: 25326359 MyJurnal
    deep venous thrombosis (dVT) in lower limbs caused by abdominal aortic aneurysm (AAA) is rare. A combination of anatomical obstruction with surrounding inflammatory tissue and reduced blood flow in venous limb were probably the main reasons for the occurrence of the dVT. we report a case of infra-renal AAA presented as lower limb dVT and symptomatic pulmonary embolism.
  4. Ali MF, Abdul Aziz AF, Rashid MR, Che Man Z, Amir AA, Lim YS, et al.
    Med J Malaysia, 2015 Feb;70(1):18-23.
    PMID: 26032524
    INTRODUCTION: The lack of evidence that proves the benefit of traditional and complementary medicines (T & CM) in treating chronic medical conditions does not deter its usage among patients worldwide. Prevalence of usage among post-stroke patients in Malaysia especially is unknown. This study aims to determine the prevalence, practice and perception of T & CM use among stroke survivors attending an outpatient rehabilitation program in a teaching hospital.
    METHODS: A cross-sectional study was conducted among 104 post stroke patients attending an outpatient rehabilitation program. A structured self-administered questionnaire was used to collect data on sociodemographic and clinical profile of patients, as well as types of therapy used and perception on T & CM usage. Descriptive analysis was done, and bivariate analysis was used to determine associations between categorical data.
    RESULTS: Mean age of patients was 62 years (SD 12.2), 54% were Chinese and 75% of the patients had ischaemic stroke. Mean age of T & CM users was younger compared to non- T & CM users (61 years vs. 66 years, p=0.04). Two-thirds (66%) of patients admitted to concurrent T & CM usage while attending conventional post stroke rehabilitation. Acupuncture (40.4%), massage (40.4%) and traditional Chinese medicine (11.5%) were the most common T & CM used. Positive perception was recorded in terms of ability of T & CM usage to relieve post stroke symptoms (68%), and it was safe to use because it was made from 'natural sources'. Negative perception recorded: T & CM caused significant adverse effects (57.6%) and was not safe to be used in combination with other conventional medicines (62.5%).
    CONCLUSIONS: Concurrent T & CM usage among post-stroke patients attending structured outpatient rehabilitation program is widely practised especially acupuncture, massage and traditional Chinese medicines. Overall the perception towards its use is favourable.
    Study site: Medical Rehabilitation Services Department, Perubatan Universiti Kebangsaan Malaysia (PPUKM), Kuala Lumpur, Malaysia
  5. Naresh G, Zainal AA
    Med J Malaysia, 2008 Mar;63(1):73-4.
    PMID: 18935743 MyJurnal
    Repair of an abdominal aortic aneurysm in a renal transplant recipient poses many different problems due to warm ischaemia to the grafted kidney. This is a case of 50-year-old gentleman who had a pervious renal transplant with abdominal aortic aneurysm. To reduce the effects of warm ischaemia on the transplanted kidney, an axillo unifemoral bypass was done prior to aneurysm repair. This ensured continued perfusion to the transplanted kidney. The post operative period was complicated by Methicillin Resistant Staphyloccus Aureus infection of the graft.
  6. Jamaluddin O, Zainal AA
    Med J Malaysia, 2004 May;59 Suppl B:143-4.
    PMID: 15468859
    Raising the thermal expansion coefficient (CTE) of dental porcelains is important to match the CTE of the ceramic material with the higher CTE of the metal inlay in dental restorations. The higher thermal expansion of the leucite phase increases the overall thermal expansion coefficient of the dental porcelain. Potassium nitrate (KNO3) additions in controlled percentages to the base dental porcelain formulation help in the formation of a leucite phase. The percentage added was 5,10 and 20 weight percent of leucite, respectively, to the total base frit composition. The change in CTE values was then investigated using a Linseis Dilatometer. A 20wt% KNO3 addition resulted in a CTE of 9.0 microm/m-K compared to the 7.7 microm/m-K CTE of the base composition. The microstructures observed under the scanning electron microscope (SEM) show a multiphase material with the leucite phases dispersed within a glassy matrix. The results suggest that higher CTEs in the dental porcelain are possible by increasing the KNO3- additions within the limits tested.
  7. Shah RK, Fahmi MN, Mat AH, Zainal AA
    Med J Malaysia, 2004 May;59 Suppl B:75-6.
    PMID: 15468826
    Hydroxyapatite (HA) has been earmarked as suitable for implantation within the human of its chemical makeup to human bone. In this paper, HA powders were synthesized via the precipitation method where phosphoric acid (H3PO4) was titrated into calcium hydroxide solution [Ca(OH)2]. Two parameters such as temperature and stirring rate were identified as factors that influenced the amount and purity of HA powder. Phase identification of the synthesized powder was done using X-Ray Diffraction (XRD). The results show that HA phase can be synthesized from this titration process of Ca(OH)2 and H3PO4 with yield amount of HA powder around 45 - 61 grams but with less than hundred percent purity. In order to study the effect of heat treatment to HA crystals structure, HA powder was calcined at 850 degrees C for 2 hours. It's found that the degree of crystallinity increases after calcination because of lattice expansion when the materials were heated at higher temperature
  8. Normayah K, Mazri YM, Suib I, Zainal AA
    Med J Malaysia, 2004 Oct;59(4):547-9.
    PMID: 15779593
    A young gentleman presented with a history of multiple pseudoaneurysms of the right carotid artery, left radial artery, right femoral artery as well as deep vein thrombosis involving the right femoral vein. A diagnosis of Behcet's disease was made on the basis of his history of recurrent oral and genital ulceration with characteristic eye lesion.
  9. Khang NC, Zainal AA
    Med J Malaysia, 2016 02;71(1):17-22.
    PMID: 27130738
    BACKGROUND: This is a single institutional review of aortoiliac pseudoaneurysm of various aetiologies managed with endovascular stent graft repair.

    METHODS: From 2009 to 2014, 16 patients had endovascular stent graft inserted for pseudoaneurysm of the thoracic aorta, abdominal aorta and iliac arteries in Hospital Kuala Lumpur. Co-morbidity, causative agents, in-hospital mortality, complications and outcomes were examined.

    RESULTS: The average age was 59.1 years (range 36-77). Comorbidities include hypertension, diabetes mellitus, tuberculosis, prior infection and previous open aneurysmal repair. All patients had raised WBC (>10.0x10(9) /L), ESR or Creactive protein on admission while 50% of patients had fever. Blood cultures were positive in 4 patients. All patients were given antibiotics. Only one in-hospital mortality was noted at day-47 post-procedure. Two patients died of aortoenteric fistula at district hospital eight and 16 months later. One patient died of chronic graft infection two years later. One died of unrelated cause. One patient developed type IB endoleak from internal iliac artery two years later and surgical ligation was performed. The average follow up was 15.8 months.

    CONCLUSION: Endovascular stent graft repair for pseudoaneurysm is a viable option compared to open surgery. It is less invasive, has lower operative morbidity and fair outcomes. However, some cases may be due to inflammatory aortitis instead of infective pseudoaneurysm, given the frequent culture-negative results. In order to obtain high yield of bacteria culture for infected pseudoaneurysm, open repair with tissue culture is still the main mode of treatment especially for patients with low comorbidity.
  10. Mohanaraj T, Hanif H, Zainal AA
    Med J Malaysia, 2015 Feb;70(1):31-2.
    PMID: 26032526 MyJurnal
    Gastrointestinal stromal tumours (GIST) are rare gastrointestinal tumours and are one of the causes of obscure gastrointestinal bleeding. We report a case of massive gastrointestinal bleeding secondary to bleeding jejunal GIST in a 43 years old gentleman. Endoscopic intervention failed to identify the source of bleeding and CT Angiography (CTA) showed a jejunal mass and patient underwent laparotomy and resection of the bleeding jejunal GIST. This article highlights the rare cause of the massive GI bleeding and also emphasise the role of CTA in obscure GI bleeding.
  11. Dharmendran R, Zainal AA
    Med J Malaysia, 2003 Mar;58(1):135-8.
    PMID: 14556341
    This is a case report of an elderly male, who presented with duodenal obstruction caused by abdominal aortic aneurysm. An axillo-bifemoral shunting with an infra renal straight inlay graft together with a feeding jejunostomy was performed. This is rare presentation with only a few cases reported.
  12. Leong BDK, Govindarajanthran N, Hafizan TM, Tan KL, Hanif H, Zainal AA
    Med J Malaysia, 2017 04;72(2):91-93.
    PMID: 28473670 MyJurnal
    INTRODUCTION: There has been a paradigm shift in the treatment of AAA with the advent of endovascular aneurysm repair (EVAR). Rapid progress and evolution of endovascular technology has brought forth smaller profile devices and closure devices. Total percutaneous endovascular aneurysm repair (pEVAR) involves the usage of suture-mediated closure devices (SMCDs) at vascular access sites to avoid a traditional surgical cutdown.

    MATERIALS AND METHODS: We retrospectively reviewed our experience of pEVAR between April 2013 and July 2014. Primary success of the procedure was defined as closure of a common femoral artery (CFA) arteriotomy without the need for any secondary surgical or endovascular procedure within 30 days.

    RESULTS: In total there were 10 pEVAR cases performed in the study period, one case in Queen Elizabeth Hospital during visiting vascular service. Patients have a mean age of 73.4 year old (66-77 year old) The mean abdominal aortic size was 7.2 cm (5.6-10.0cm). Mean femoral artery diameter was 9.0 mm on the right and 8.9 mm on the left. Mean duration of surgery was 119 minutes (98- 153 minutes). 50% of patients were discharged at post-operative day one, 30%- day two and 20%- day three. Primary success was achieved in 9 patients (90%) or in 19 CFA closures (95%). No major complication was reported.

    DISCUSSION: We believe that with proper selection of patients undergoing EVAR, pEVAR offers a better option of vascular access with shorter operative time, less post- operative pain, shorter hospital stay and minimises the potential complications of a conventional femoral cutdown.

  13. Mohana RT, Zainal AA
    Med J Malaysia, 2017 12;72(6):370-371.
    PMID: 29308777 MyJurnal
    Intestinal knot formation was first described by Riverius in 16th century and later by Rokitansky in 1836. We report a very rare cause of small bowel gangrene caused by appendiceal knotting on to the ileum in a previously healthy mid aged lady. Patient underwent laparatomy and right hemicolectomy and primary anastomosis. The intra operative findings were the appendix was twisting (knotting) the small bowel about 40cm from the terminal ileum and causing gangrene to the segment of small bowel. Appendicitis is a common condition and management is usually straightforward. However we must be aware of rare complications which may arise that require a change from the standard treatment of acute appendicitis.
  14. Saravana KS, Zainal AA
    Med J Malaysia, 2017 02;72(1):3-6.
    PMID: 28255132 MyJurnal
    OBJECTIVE: Central vein occlusion is a common complication related to central vein catheter insertion for haemodialysis which can be unmasked by an ipsilateral fistula creation, leading to a dysfunctional arteriovenous fistula (AVF). We describe an extra-anatomical venous bypass surgical procedure performed to maintain vascular access and reduce the symptoms of swelling of the ipsilateral upper limb, neck and face.

    MATERIALS AND METHODS: We report 20 consecutive patients with end-stage renal failure (ESRF) who had central vein occlusion and were not amenable to endovascular intervention. They underwent extra-anatomical vein to vein surgical bypass. The axillary and iliac or femoral veins were approached via infraclavicular and extraperitoneal groin incisions respectively. In all the patients, an externally supported 6 or 8 mm polytetrafluoroethylene (PTFE) graft was used as a conduit and was tunnelled extra-anatomical. All patients had double antiplatelet (Aspirin and Clopidogrel) therapy post-operatively.

    RESULTS: Substantial improvement in the facial, neck and upper limb swelling was noticed following this diversion surgery. The vein to vein bypass was patent at 12 months in 10 out of 20 patients. Graft infection occurred in two (10%) cases. Re-thrombectomy or assisted patency procedure (stent/plasty) was done in four (20%) cases. The patients with preoperative fistula flow rate of more than 1500 ml/min and post-operative graft flow rate of more than a 1000 ml/min were patent at 12 months (P=0.025 and p=0.034 respectively).

    CONCLUSION: Axillary to iliac/femoral vein bypass can salvage functioning ipsilateral fistula threatened by occluded upper central vein.

  15. Lee SK, Zainal A
    Med J Malaysia, 2004 Mar;59(1):115-7.
    PMID: 15535347
    Pseudoaneurysms of the subclavian artery are extremely rare lesions despite the overall increase in the frequency of septic pseudoaneurysms caused by illicit parenteral drug abuse. A case of subclavian artery pseudoaneurysm presenting with Horner's syndrome in an intravenous drug user is discussed.
  16. Ramesh KN, Vidyadaran MK, Goh YM, Nasaruddin AA, Jammal ABE, Zainab S
    Med J Malaysia, 2005 Aug;60(3):305-10.
    PMID: 16379184
    A study was undertaken to 1) determine the effects of tobacco smoke exposure on maternal and neonatal weight and body mass index (BMI) and placental weight, volume and surface area and 2) establish any correlations between the placental surface area, volume and weight with maternal and neonatal body weight and BMI in mothers exposed to cigarette smoke. A total of 154 full-term placentae, 65 from mothers exposed to tobacco smoke and 89 from non-exposed mothers were collected from Kuala Lumpur Maternity Hospital. The placental surface area was determined using a stereological grid, the volume by Scherle's method and the weight by using an electronic weighing machine. In general there were no differences in maternal, placental and neonatal parameters between the exposed and non-exposed groups. However, there were significant correlations between placental weight with maternal weight and maternal BMI in both exposed (r = 0.315; p = 0.013) and (r = 0.265; p = 0.038), and non-exposed (r = 0.224; p = 0.035) and (r = 0.241; p = 0.023) mothers. It was also found that the maternal weight on admission correlated significantly with placental weight in both Malay (r = 0.405; p = 0.020) and Indian (r = 0.553; p = 0.050) passive smokers. Correcting the placental parameters for the maternal weight had no effect on the results.
  17. Sanni SA, Zainab AN
    Med J Malaysia, 2012 Feb;67(1):52-9.
    PMID: 22582549
    We analysed 580 articles (original articles only) published in Medical Journal of Malaysia between 2004 and 2008, the resources referenced by the articles and the citations and impact received. Our aim was to examine article and author productivity, the age of references used and impact of the journal. Publication data was obtained from MyAIS database and Google Scholar provided the citation data. From the 580 articles analyzed, contributors mainly come from the hospitals, universities and clinics. Contributions from foreign authors are low. The useful lives of references cited were between 3 to 11 years. ISI derived Impact factor for MJM ranged between 0.378 to 0.616. Journal self-citation is low. Out of the 580 sampled articles, 76.8% have been cited at least once over the 5 years and the ratio of total publications to citations is 1: 2.6.
  18. Zain R
    Med J Malaysia, 1986 Dec;41(4):370-3.
    PMID: 3670162
    This article consists of two selected case reports of a recently named odontogenic tumour, unicystic ameloblastoma. The clinical and radiographic findings of the two cases mimic that of odontogenic cysts but not dentigerous cysts as in most reported, cases. Histologically, either a normal or ameloblastomatous cyst lining is evident. Other features of ameloblastoma are present within the cyst wall or as luminal nodules within the cystic space. A review of the literature indicates that this is a non-aggressive tumour with a low recurrence rate.
  19. Malini MN, Zain MM
    Med J Malaysia, 2020 01;75(1):24-28.
    PMID: 32008015
    BACKGROUND: In reproductive medicine poor ovarian response (POR) among women undergoing in vitro fertilisation (IVF) is of great concern. Meta-analysis showed that Dehydroepiandrosterone (DHEA) administration resulted in a significant increase in the number of oocytes retrieved in women with POR. The aim of this study was to assess the effectiveness of DHEA supplementation on IVF outcomes among poor responders undergoing IVF.

    METHODS: Sixteen patients who were diagnosed with POR scheduled to undergo their second cycle of Intracytoplasmic sperm injection (ICSI)/embryo transfer cycle were enrolled. All enrolled patients had earlier undergone their first ICSI/embryo transfer cycle at least four months prior to this study. All subjects were given DHEA supplementation of 25mg three times daily for at least three months prior to their second ICSI/embryo transfer cycle. Statistical analysis of various ovarian response and ICSI outcomes parameter were compared pre and post DHEA.

    RESULTS: Sixteen women with the mean age of 35 years were enrolled in the study. The comparative analysis of results showed a significant increase in the number of good quality of embryos obtained (p<0.05). After the treatment with DHEA, there was an improvement in the number of oocytes retrieved, Metaphase II (MII) oocyte (mature) oocytes obtained, fertilised and transferrable embryos and the pregnancy rate. There was no significant effect of DHEA treatment on the number of days of stimulation and cumulative dose of gonadotrophins used.

    CONCLUSION: Our results is able to show that DHEA supplementation may help to enhance IVF-ICSI outcomes in women with POR especially in those age 35 years and below.

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