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Fulltext Risk profiles of referred chronic kidney disease patients in a tertiary nephrology centre

Lim CT, R R, A S MZ

Pak J Med Sci, 2016 Mar-Apr;32(1):27-30.
PMID: 27022339 DOI: 10.12669/pjms.321.8214

OBJECTIVES: The aims of this study were to determine the seroprevalence of acute dengue in Universiti Kebangsaan Malaysia (UKM) Medical Centre and its correlation with selected haematological and biochemical parameters.
METHODS: This cross-sectional study was conducted from January to June 2015. A patient was serologically diagnosed with acute dengue if the dengue virus IgG, IgM or NS-1 antigen was reactive.
RESULTS: Out of 1,774 patients suspected to have acute dengue, 1,153 were serologically diagnosed with the infection, resulting in a seroprevalence of 64.9%. Dengue-positive patients had a lower mean platelet count (89 × 10(9)/L) compared to the dengue-negative patients (171 × 10(9)/L) (p<0.0001). The mean total white cell count was also lower in the dengue-positive cases (4.7 × 10(9)/L vs. 7.2 × 10(9)/L; p<0.0001). The mean haematocrit was higher in patients with acute dengue (42.5% vs. 40.0%; p<0.0001). Likewise, the serum alanine transaminase level was also higher in patients with acute dengue (108 U/L vs. 54 U/L; p<0.0001).
CONCLUSIONS: Dengue is very prevalent in UKM Medical Centre as most patients suspected to have acute dengue had serological evidence of the infection. The platelet count was the single most likely parameter to be abnormal (i.e. low) in patients with acute dengue.
KEYWORDS: DENV; Dengue; IgG; IgM; NS1; Seroprevalence
Quality of life in dialysis: A Malaysian perspective

Liu WJ, Musa R, Chew TF, Lim CT, Morad Z, Bujang A

Hemodial Int, 2014 Apr;18(2):495-506.
PMID: 26820998 DOI: 10.1111/hdi.12108

There is a growing interest to use quality of life as one of the dialysis outcome measurement. Based on the Malaysian National Renal Registry data on 15 participating sites, 1569 adult subjects who were alive at December 31, 2012, aged 18 years old and above were screened. Demographic and medical data of 1332 eligible subjects were collected during the administration of the short form of World Health Organization Quality of Life questionnaire (WHOQOL-BREF) in Malay, English, and Chinese language, respectively. The primary objective is to evaluate the quality of life among dialysis patients using WHOQOL-BREF. The secondary objective is to examine significant factors that affect quality of life score. Mean (SD) transformed quality of life scores were 56.2 (15.8), 59.8 (16.8), 58.2 (18.5), 59.5 (14.6), 61.0 (18.5) for (1) physical, (2) psychological, (3) social relations, (4) environment domains, and (5) combined overall quality of life and general health, respectively. Peritoneal dialysis group scored significantly higher than hemodialysis group in the mean combined overall quality of life and general health score (63.0 vs. 60.0, P
Fulltext Meconium ileus--a rare cause of neonatal intestinal obstruction in Malaysia

Lim CT, Yip CH, Chang KW

Singapore Med J, 1994 Feb;35(1):74-6.
PMID: 8009287

Meconium ileus, rare in Malaysia, accounts for 3.7% of all neonatal intestinal obstructions (excluding imperforate anus) seen in the University Hospital, Kuala Lumpur, from 1980-1990. This paper retrospectively reviews our clinical experience with 5 cases of meconium ileus seen over a 12-year period from 1980-1991 in the University Hospital, Kuala Lumpur. Three of the neonates were Malays, and two were Punjabis. Four of them were full-term and one preterm. The birth weights ranged from 1900 to 3700 g, with a mean of 2670 g. One of them also had a sibling with meconium ileus. Two of them were found to have foetal ascites and one had intestinal obstruction, antenatally by ultrasonography. The remaining two were symptomatic soon after birth. Extensive calcification was observed on plain abdominal radiographs in three babies and dilated bowels in the other two. All of them underwent laparotomy and uncomplicated meconium ileus was confirmed in two cases, meconium peritonitis in two and one meconium pseudocyst in addition to meconium peritonitis. There was one intraoperative death, and one long-term survivor who did not have cystic fibrosis. The remaining three did not have additional features suggestive of cystic fibrosis, and finally succumbed to respiratory infection. Sweat test was not done to confirm the diagnosis for logistic reasons. The management of such patients proved to be a challenge to clinicians because of the rarity of this condition.
Fulltext Population pharmacokinetics of vancomycin in premature Malaysian neonates: identification of predictors for dosing determination

Lo YL, van Hasselt JG, Heng SC, Lim CT, Lee TC, Charles BG

Antimicrob Agents Chemother, 2010 Jun;54(6):2626-32.
PMID: 20385872 DOI: 10.1128/AAC.01370-09

The present study determined the pharmacokinetic profile of vancomycin in premature Malaysian infants. A one-compartment infusion model with first-order elimination was fitted to serum vancomycin concentration data (n = 835 points) obtained retrospectively from the drug monitoring records of 116 premature newborn infants. Vancomycin concentrations were estimated by a fluorescence polarization immunoassay. Population and individual estimates of clearance and distribution volume and the factors which affected the variability observed for the values of these parameters were obtained using a population pharmacokinetic modeling approach. The predictive performance of the population model was evaluated by visual inspections of diagnostic plots and nonparametric bootstrapping with replacement. Dosing guidelines targeting a value of > or =400 for the area under the concentration-time curve over 24 h in the steady state divided by the MIC (AUC(24)/MIC ratio) were explored using Monte Carlo simulation. Body size (weight), postmenstrual age, and small-for-gestational-age status are important factors explaining the between-subject variability of vancomycin pharmacokinetic parameter values for premature neonates. The typical population parameter estimates of clearance and distribution volume for a 1-kg premature appropriate-for-gestational-age neonate with a postmenstrual age of 30 weeks were 0.0426 liters/h and 0.523 liters, respectively. There was a 20% reduction in clearance for small-for-gestational-age infants compared to the level for the appropriate-for-gestational-age control. Dosage regimens based on a priori target response values were formulated. In conclusion, the pharmacokinetic parameter values for vancomycin in premature Malaysian neonates were estimated. Improved dosage regimens based on a priori target response values were formulated by incorporating body size, postmenstrual age, and small-for-gestational-age status, using Monte Carlo simulations with the model-estimated pharmacokinetic parameter values.
Oculopharyngeal muscular dystrophy: a case report and a review of literature

Lim CT, Chew CT, Chew SH

Ann Acad Med Singap, 1992 May;21(3):399-403.
PMID: 1416791

Most muscular dystrophies manifest as peripheral muscular weakness commencing at various age, however, oculopharyngeal muscular dystrophy (OPMD) is a rare hereditary disorder presenting in middle age with progressive dysphagia and bilateral blepharoptosis rather than peripheral muscular weakness. In the medical literature, OPMD has been well described in Canadians of French descent. So far, there is no publication of OPMD in the Malaysia-Singapore medical literature. This article documents this condition in a Chinese patient. A review of the literature is presented and the management of OPMD is discussed.
Fulltext The effectiveness of surfactant replacement therapy for preterm infants with respiratory distress syndrome

Lim WL, Lim CT, Chye JK

Med J Malaysia, 1998 Dec;53(4):376-84.
PMID: 10971981

Thirty preterm infants weighing > or = 800 g with clinical and radiological evidence of respiratory distress syndrome (RDS) requiring mechanical ventilation with FiO2 of > or = 40% were given modified bovine surfactant (Survanta). They were compared with equal number of historical controls. Infants who received surfactant showed prompt and highly significant improvement in FiO2, mean airway pressure, arterial/alveolar oxygen tension ratio and ventilatory index. There was significant improvement in mortality rate (10% vs 33%; p = 0.03). Among the survivors, surfactant-treated infants required shorter duration of continuous positive airway pressure (CPAP) (3.4 vs 9.6 days; p = 0.04). For survivors with birthweight of > 1000 g, surfactant-treated infants required shorter duration of ventilatory support (intermittent positive pressure ventilation + CPAP) (7.5 vs 18.9 days, p = 0.02). Overall, surfactant-treated infants achieved full enteral feeds sooner (15.7 days vs 24.6 days; p = 0.03) and required shorter duration of total parenteral nutrition (13.9 days vs 25.6 days; p = 0.02). We concluded that surfactant replacement therapy was effective in the treatment of preterm infants with RDS.
Fulltext Colonization and transmission of Ureaplasma urealyticum and Mycoplasma hominis from mothers to full and preterm babies by normal vaginal delivery

Chua KB, Ngeow YF, Lim CT, Ng KB, Chye JK

Med J Malaysia, 1999 Jun;54(2):242-6.
PMID: 10972036

A prospective study was carried out among pregnant women and their newborn babies in the University Hospital, Kuala Lumpur from January 1996 to June 1997. The maternal cervical colonization rates of Ureaplasma urealyticum (UU) and Mycoplasma hominis (MH) were found to be 57.5% and 15.8% respectively while the isolation rates from nasopharyngeal secretions of the newborns were 50.8% for UU and 6.6% for MH. The overall transmission rates were 88.4% for UU and 42.1% for MH. There was no significant difference in the transmission rates of either organism from mothers to their respective newborn babies by the maturity of pregnancy. In preterm babies, the nasopharyngeal isolation rates of UU and MH were not influenced by the babies' gestational age and birth weight nor by the maternal history of abortion or parity. However, there was a tendency for UU to persist in the nasopharyngeal secretion of preterm babies especially those of birth weight below 2 kg. None of the babies contaminated with mycoplasmas at birth developed respiratory symptoms during six to eight weeks of follow-up.
Factors associated with in-hospital mortality among infective endocarditis patients

Ho YH, Lim CT, Chua CZF, Chow HB, Chua HH, Fong AYY

Med J Malaysia, 2023 Nov;78(6):743-750.
PMID: 38031215

INTRODUCTION: Despite recent advancements in the diagnosis and management of infective endocarditis (IE), it is associated with substantial morbidity and mortality. Our study objective is to determine the factors associated with in-hospital mortality in IE patients among the local population.
MATERIALS AND METHODS: All IE patients who were diagnosed with definite or possible IE and were treated at Sarawak Heart Centre from 1st January 2020 to 31st December 2022 were recruited. We examined the demographic features of the subjects and the factors that contributed to in-hospital mortality. Multivariate logistic regression was used to analyse the associated factors and in-hospital mortality.
RESULTS: Our study population comprised a total of 37 patients with a mean age of 46.4 years and male predominance. The in-hospital mortality rate of IE in this study was 44.4%. Haemodynamic instability and anaemia were found to be strong predictors of IE survival outcome, with an odds ratio of 51.5 and 35.7 respectively. Patients with vascular phenomenon and heart failure were at 10.5- and 6.0-times higher odds of dying, however, these two associations were found to be not statistically significant.
CONCLUSION: The in-hospital mortality due to IE in our study was among the highest in developing countries. Factors of hypotension and optimal response to individual hemodynamic parameters may confer lower mortality. While anaemia is demonstrable as a risk factor for inpatient mortality, a target has yet to be reasonably established.
Fulltext Predictor of cardiovascular risks in end stage renal failure patients on maintenance dialysis

Lim CT, Yap XH, Chung KJ, Khalid MA, Yayha N, Latiff LA, et al.

Pak J Med Sci, 2015 Nov-Dec;31(6):1300-5.
PMID: 26870086 DOI: 10.12669/pjms.316.8039

OBJECTIVE: Cardiovascular disease (CVD) is the main cause of morbidity and premature mortality in end stage renal failure patients (ESRD) receiving dialysis. The aim of our study was to evaluate the impact of various risk factors in this group of high CVD risk patients in local population.
METHODS: We carried out a cross-sectional retrospective study in a single hospital. A total of 136 ESRF patients, consisted of 43 haemodialysis (HD) and 93 continuous ambulatory peritoneal dialysis (CAPD) patients, were recruited and followed up for 36 months duration. Midweek clinical and laboratory data were collected. The occurrence of existing and new CVD events was recorded.
RESULTS: Multiple Logistic Regression showed pre-existing cardiovascular event (odds ratio, 4.124; 95% confidence interval [CI], 0.990 to 17.187), elevated total cholesterol level (odds ratio, 0.550; 95% CI, 0.315 to 0.963), elevated serum phosphate level (odds ratio, 5.862; 95% CI, 1.041 to 33.024) and elevated random blood glucose level (odds ratio, 1.193; 95% CI, 1.012 to 1.406) were significantly associated with occurrence of CVD events.
CONCLUSIONS: History of cardiovascular event before the initiation of dialysis, elevated level of serum phosphate and random blood glucose levels are the risk factors of CVD whereas paradoxically a high total cholesterol level has CVD protective effect towards the ESRF patients.
KEYWORDS: CVD risk; End Stage Renal Failure (ESRF); Haemodialysis; Peritoneal dialysis
Effects of nutritional status on academic performance of Malaysian primary school children

Anuar Zaini MZ, Lim CT, Low WY, Harun F

Asia Pac J Public Health, 2005;17(2):81-7.
PMID: 16425650

Numerous factors are known to affect the academic performance of students. These include prenatal conditions, birth conditions, postnatal events, nutritional, socio-economic factors and environmental factors. This paper examines the nutritional status and its relationship with academic performance of 9-10 years old primary school children recruited randomly in Selangor, Malaysia. A standard self-administered questionnaire was utilized to obtain pertinent information and a face-to-face interview was also conducted with the parents. Results of the academic performances were extracted from the students' report cards. The intellectual performance was assessed using Raven's Coloured Progressive Matrices. Physical examination was also conducted on these students by doctors. Overall 1,405 students and 1,317 parents responded to the survey. Of these 83.6% were Malays, 11.6% Indians, and 4.2% Chinese. The majority of them (82.9%) were from urban areas. The female: male ratio was 51:49; mean age was 9.71 years. The mean height and weight were 32.3 kg and 135.2 cm respectively. Their mean BMI was 17.42 kg/cm2, with 0.9% underweight, 76.3% normal BMI, 16.3% overweight, and 6.3% obese. Academic performance was significantly correlated with breast feeding, income and educational level of their parents, BMI, and whether they have been taking breakfast. There was a weak correlation between presence of anaemia and intellectual performance. Improving the socio-economic status of the parents will lend a helping hand in the academic performance of the students. Since breast feeding is associated with better academic and intellectual performance it must be emphasized, particularly to expectant mothers in the antenatal clinics.
Factors affecting nutritional status of Malaysian primary school children

Zaini MZ, Lim CT, Low WY, Harun F

Asia Pac J Public Health, 2005;17(2):71-80.
PMID: 16425649

This paper investigates the nutritional status of a randomly selected cohort of school children and the factors affecting it. This random survey was conducted in the state of Selangor, involving 1,405 primary students (aged 9-10 years from 54 national primary schools). Physical examination was carried out on all the students. Information on the students was also obtained from the parents. Blood samples were taken by using the finger pricking technique. Body mass index (BMI) was used as a measure of physical growth. The students were mainly from urban areas (82.9%). The mean age was 9.71 years and a higher proportion was females (51%). Malays constituted 83.6%, Indians 11.6% and Chinese 4.2% of the study population. The mean weight and height were 32.30 kg and 135.18 cm respectively. The mean BMI was 17.42 kg/m2, with 1.2% of the students underweight, 76.3% normal BMI, 16.3% overweight and 6.3% were obese. Nutritional status was significantly related to blood pressure, history of breast feeding, eating fast food, taking canned/bottled drinks, income and educational level of parents. Significant differences in nutritional status between sexes and locations (rural/urban) were also found. The prevalence of overweight and obese children was of concern. There is thus an urgent need for the School Health Program to periodically monitor the school children's eating habits and physical growth. Appropriate counselling on nutritional intake and physical activities should be given not only to schoolchildren but also to their teachers and parents or caregivers.
Cerebro-costo-mandibular syndrome

Lim CT, Koh MT

Australas Radiol, 1992 May;36(2):158-9.
PMID: 1520180

Cerebro-costo-mandibular syndrome (CCM) is a very rare entity with oro-facial features closely resembling Pierre-Robin anomaly (1,2). We describe a patient with typical features: severe micrognathia, glossoptosis, central cleft soft palate and multiple posterior rib-gap defects seen on chest radiograph. Respiratory distress which was evident soon after birth was relieved by an oro-pharyngeal airway. He suffered from a cardiorespiratory arrest and succumbed, presumably secondary to aspiration of milk feeds, before a tracheostomy could be performed.
Fulltext Methicillin resistant Staphylococcus aureus--first case of bacteremia in the University Hospital, Kuala Lumpur

Puthucheary SD, Lim CT, Parasakthi N, Tan A, Lam KL

Singapore Med J, 1987 Oct;28(5):456-8.
PMID: 3433116
Vertical transmission of dengue

Chye JK, Lim CT, Ng KB, Lim JM, George R, Lam SK

Clin Infect Dis, 1997 Dec;25(6):1374-7.
PMID: 9431381

Dengue, an important mosquito-borne flavivirus infection, is endemic in Southeast Asia. We describe two mothers who had acute dengue 4 and 8 days before the births of their infants. One mother had worsening of her proteinuric pregnancy-induced hypertension, liver dysfunction, and coagulopathy and required multiple transfusions of whole blood, platelets, and fresh frozen plasma. Her male infant was ill at birth, developed respiratory distress and a large uncontrollable left intracerebral hemorrhage, and died of multiorgan failure on day 6 of life. Dengue virus type 2 was isolated from the infant's blood, and IgM antibody specific to dengue virus was detected in the mother's blood. The second mother had a milder clinical course; she gave birth to a female infant who was thrombocytopenic at birth and had an uneventful hospitalization. Dengue virus type 2 was recovered from the mother's blood, and IgM antibody specific to dengue virus was detected in the infant's blood. This report highlights not only the apparently rare occurrence of vertical transmission of dengue virus in humans but also the potential risk of death for infected neonates.
Fulltext The significance of tubular and glomerular proteinuria in critically ill patients with severe acute kidney injury

Lim CT, Tan HK, Lau YK

Pak J Med Sci, 2014 Nov-Dec;30(6):1186-90.
PMID: 25674105 DOI: 10.12669/pjms.306.5684

Critically ill patients with acute kidney injury (AKI) frequently need acute renal replacement therapy (aRRT). We evaluated an inexpensive, rapid quantitative and qualitative analysis of proteinuria on the course of AKI patients requiring aRRT in intensive care.
Cross-cultural adaptation and validation of the Malay language version of the TZO-AZL Preschool Children Quality of Life questionnaire: A health-related quality of life instrument for preschool children

Tay CG, Jalaludin MY, Low WY, Lim CT

J Child Health Care, 2015 Jun;19(2):167-81.
PMID: 24154842 DOI: 10.1177/1367493513503583

The aim of this study is to evaluate the psychometric properties of the translated Malay language version of TZO-AZL Preschool Children Quality of Life (TAPQOL) questionnaire in preschool children. Preterm children and term children aged between two and five years were enrolled into the study. The Malay language version of TAPQOL and a set of questions regarding the child's health status were answered by the caregivers. The internal consistency, Spearman's correlation coefficients and principal component analysis (PCA) with Varimax rotation and Mann-Whitney U test for group comparison were employed to evaluate the psychometric properties of this instrument. A total of 258 children (120 preterm children and 138 term children) were recruited to this study with a response rate of 94%. All (sub)domains except one had Cronbach's α coefficients of more than .7. The Spearman's correlation coefficients between 12 subdomains were generally low. PCA supported the structural unidimensionality of the items in the instrument. Preterm children had lower quality of life scores than that of term children. Malay version of TAPQOL has multidimensional construct. It is a reliable and valid instrument for preschool children, with almost similar psychometric properties to the original version.
Treatment of congenital chylothorax with octreotide in a hydropic preterm infant

Choo YM, Lim CT

Paediatr Int Child Health, 2013 May;33(2):116-9.
PMID: 23925288 DOI: 10.1179/2046905512Y.0000000030

Congenital chylothorax is rare in preterm infants. While most cases respond to conservative treatment, a few require surgery. Treatment with intravenous octreotide has been reported to have varying success in preterm infants. A fetus was diagnosed with bilateral hydrothoraces at 29 weeks of gestation and repeated thoracocentesis was performed antenatally to allow growth of the lungs. She was delivered electively at 32 weeks by caesarean section. Hydrops fetalis was confirmed and chest tubes were inserted bilaterally soon after birth. Intravenous octreotide was commenced on day 4 of life, titrated to a maximum of 10 μg/kg/hr for a total of 28 days. Hydrothorax resolved at day 30 and total parenteral nutrition was given for a total of 37 days. She was successfully extubated on day 40 of life and discharged on day 80. On review at 6 months of age, she was thriving and developing normally.
Combined low-dose oral propranolol and oral prednisolone as first-line treatment in periocular infantile hemangiomas

Koay AC, Choo MM, Nathan AM, Omar A, Lim CT

J Ocul Pharmacol Ther, 2011 Jun;27(3):309-11.
PMID: 21542771 DOI: 10.1089/jop.2011.0013

The purpose of this report was to describe 2 cases of periocular infantile hemangiomas (IHs) that were successfully treated with low-dose oral propranolol alone and in combination with oral prednisolone.
Treatment decisions in severely ill newborns

Lim CT

Med J Malaysia, 2000 Aug;55 Suppl B:17-22.
PMID: 11125515
Fulltext Characteristics of Malaysian infants with biliary atresia and neonatal hepatitis

Karnameedi S, Lim CT

Med J Malaysia, 1997 Dec;52(4):342-7.
PMID: 10968111

Cholestatic disorders of infancy (viz neonatal hepatitis and biliary atresia) have not been well studied in Malaysia. In a retrospective study in the Department of Paediatrics, University Hospital, Kuala Lumpur from January 1982 through December 1991, a total of ninety-three infants with such conditions were identified: 35 (38%) had biliary atresia, 58 (62%) neonatal hepatitis. There was a statistically significant male preponderance in the neonatal hepatitis group (P = 0.020). There was no significant difference in the racial distribution and in the proportions of low birthweight infants between the two groups of disorders. When the biliary atresia group was compared with the neonatal hepatitis group, significant differences were observed in the age of presentation (mean +/- SD) 9.8 +/- 6.8 VS 20 +/- 17.3 weeks (P < 0.001), proportion of infants with prolonged jaundice (> seven weeks) 28/35 (80%) VS 20/58 (34.5%) (P < 0.00001), occurrence of alcoholic stools 26/35 (74.3%) VS 27/58 (46.6%) (P = 0.020), liver size (mean +/- SD): 4.3 (1.6 cm VS 3.3 +/- 1.8 cm (P < 0.01) and splenic size: 2.5 (1.8 cm VS 1.4 (1.2 cm (P < 0.001). There was however considerable overlap between the two groups in these features at presentation, making clinical differentiation between the two conditions difficult. Infants with cholestasis tended to present late, compromising the chance of survival. In order to improve the medical care of these patients, these conditions must be emphasised during the training of medical practitioners, and efforts to increase public awareness of these conditions must be created.

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