Displaying publications 1 - 20 of 40 in total

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  1. Kamath S, Lopez CG
    Med J Aust, 1973 Nov 3;2(18):867-8.
    PMID: 4782397
  2. Lopez CG, Lie-Injo Luan Eng
    Med J Malaya, 1969 Dec;24(2):101-6.
    PMID: 4244132
  3. Lopez CG, Lie-Injo Luan Eng
    Hum. Hered., 1971;21(2):185-91.
    PMID: 5127409
  4. Cheong SK, Lopez CG
    Med J Malaysia, 1995 May;50 Suppl A:S46-50.
    PMID: 10968015
  5. Ton SH, Lopez CG
    PMID: 7403958
    Serum ferritin and haemoglobin estimates were carried out on 78 first time blood donors with a view to determining iron store status. Of these 30 were Malays, 20 were Chinese and 28 were Indians. The ferritin level in Malay donors ranged from 16-160 mg/ml (mean 83 +/- 49.4 mg/ml in chinese donors is ranged from 36-500 mg/ml (mean 242.8 +/- 132 mg/ml), and in the Indian donors it ranged from 5 - 270 mg/ml (mean 94.6 +/- 67.9 mg/ml). The haemoglobin concentration for the whole group was 14.9 +/- 1.49 g/dl. There was no correlation of haemoglobin concentration with serum ferritin levels.
  6. Lie-Injo Luan Eng, Lopez CG, Poey-Oey Hoey Giok
    Am J Hum Genet, 1968 Mar;20(2):101-6.
    PMID: 5643177
  7. Usin MF, Ramesh P, Lopez CG
    Malays J Pathol, 2004 Jun;26(1):43-8.
    PMID: 16190106
    Event reporting can provide data to study the failure points of an organization's work process. As part of the ongoing efforts to improve transfusion safety, a Medical Event Reporting System Transfusion Medicine, (MERS - TM) as designed by Kaplan et al was implemented in the Transfusion Medicine Unit of the University Malaya Medical Centre to provide a standardized means of organized data collection and analysis of transfusion errors, adverse events and near misses. An event reporting form was designed to detect, identify, classify and study the frequency and pattern of events occurring in the unit. Events detected were classified according to Eihdhoven Classification model (ECM) adopted for MERS - TM. Since our system reported all events, we called it Event Reporting System - Transfusion Medicine (ERS-TM). Data was collected and analyzed from the reporting forms for a period of five months from January 15th to June 15th 2002. The initial half of the period was a process of evaluation during which 118 events were reported, coded, analyzed and corrective measures adopted to prevent the recurrence of the same event. The latter half saw the reporting of 122 events following the adoption of corrective measures. There was a reduction in the occurrence of some events and an increase in others, which were mainly beyond the organization's control. A longer period of evaluation is necessary to identify the underlying contributory causes that can be useful to develop plans for corrective and preventive action and thereby reduce the rate of recurrence of errors through proper training and adoption of just culture.
  8. Jayaranee S, Prathiba R, Vasanthi N, Lopez CG
    Malays J Pathol, 2002 Jun;24(1):59-66.
    PMID: 16329557
    The purpose of this study is to determine the efficiency of blood utilization for elective surgery at the University of Malaya Medical Centre (UMMC). A similar study conducted six years earlier in the same unit resulted in the introduction and implementation in December 1997 of the local Maximum Surgical Blood Order Schedule (MSBOS) and the Group Screen and Hold (GSH) procedure instead of a full crossmatch. This paper compares the findings of the current study with that conducted earlier.
  9. Prathiba R, Lopez CG, Usin FM
    Malays J Pathol, 2002 Dec;24(2):95-8.
    PMID: 12887167
    The Mi III phenotype of the Miltenberger subsystem (or GP Mur) is relatively common in Southeast Asia especially along the south-east coast lines of China and Taiwan. The term anti-"Mia" describes antibodies that react with the Mi III phenotype. Since the Peninsula Malaysian population is a multiethnic one with a significant proportion of Chinese, a study was conducted into the prevalence of anti-"Mia" in patients from its 3 major ethnic groups--Chinese, Malays and Indians, as well as the GP Mur phenotype in blood donors (healthy individuals). Blood samples from 33,716 patients (general and antenatal) were screened for anti-"Mia" from January 1999 to December 2000. The investigation for the GP Mur phenotype representing the corresponding sensitizing antigen complex was carried out in 655 blood donors. Serum anti-"Mia" antibody was found to be the third most commonly occurring antibody detected in our patients and was found in all the ethnic groups. The antibody was detected in 0.2% of 33,716 antenatal and general patients with a prevalence in Chinese of 0.3%, Malay 0.2% and Indian 0.2%. The detection of these antibodies in the ethnic groups other than the Chinese is a noteworthy finding as such information is not well documented. The GP Mur red cell phenotype was detected in 15/306 (4.9%) of Chinese blood donors, a lower prevalence than in Chinese populations in other countries in the region. More significant was its detection in the Malays (2.8%) and the Indians (3.0%). Because of the many reports of clinical problems associated with the "Mia" antibody including the causation of fetal hydrops and haemolytic transfusion reactions, it is warranted that the GP Mur red cells be included in screening panels for group and screen procedures in countries with a significant Asian population.
  10. Ton SH, Thiruselvam A, Lopez CG, Noriah R
    Med J Malaysia, 1983 Dec;38(4):279-81.
    PMID: 6100990
    110 normal, healthy adults were tested for antibody to hepatitis A (anti-HA) type IgG and 86 (78.2%) were found to be positive. An age-specific prevalence wasfound to be lowest in the lower agegroup and highest in the higher age-group. Out of 24 IgG positive individuals, only one was found to have type IgM. No significant difference in the incidence ofanti-HA type IgG was found between 42 patients in the Urology Unit, General Hospital, Kuala Lumpur and normal individuals (P > 0.1). 15 patients diagnosed as viral hepatitis were investigated for HA V IgG and IgM antibodies. 13 (86.7%) were positive for type IgG. Of this, only five (33%) were positive for the type IgM, suggesting that HA V is the cause of acute viral hepatitis in 33% of cases admitted to hospital as viral hepatitis.
  11. Ton SH, Lopez CG, Noriah R
    PMID: 6635764
    The incidence of HBsAg in random blood donors was found to be twice that of the prisoner population. The anti-HBe however, was about twice that in the prisoners when compared with the random blood donors. Both the random blood donors and the prisoners had similar incidence of HBeAg. The percentage frequency of HBsAg positivity with anti-HBe positivity was also similar in both groups. The 18 normal non-blood donors did not have HBsAg, HBeAg or anti-HBe.
  12. Lopez CG, Ganesan S, Dutt AK, Omar bin Din
    Med J Malaya, 1969 Dec;24(2):154-7.
    PMID: 4244143
  13. Tay CH, Lopez CG, Lazarus AR
    Med J Aust, 1970 Nov 28;2(22):1024-9.
    PMID: 5494950
  14. Ton SH, Lopez CG, Hasnah H
    PMID: 483004
    A study of Kuala Lumpur blood donors for HBsAG, anti-HBc and DNA polymeraes showed that 5.5% in the sample population was positive for HBsAG, 50.1% for anti-HBc and 10.1% for DNA polymerase activity. There was no significant difference of the HBsAG among the Malay, Chinese and Indian groups. However, a significant difference was observed for the anti-HBc and DNA polymerase activity between the Indian and the Malay/Chinese groups. Both analysis were significantly lower in the Indians but there was no significant difference between the Chinese and the Malays.
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