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  1. Cheah MH, Kam PC
    Anaesthesia, 2005 Oct;60(10):1009-21.
    PMID: 16179047 DOI: 10.1111/j.1365-2044.2005.04229.x
    Obesity is becoming a major public health problem throughout the world. It is now the second leading cause of death in the United States and is associated with significant, potentially life-threatening co-morbidities. Significant advances in the understanding of the physiology of body weight regulation and the pathogenesis of obesity have been achieved. A better understanding of the physiology of appetite control has enabled advances in the medical and surgical treatment of obesity. Visceral or abdominal obesity is associated with an increased risk of cardiovascular disease and type 2 diabetes. Various drugs are used in the treatment of mild obesity but they are associated with adverse effects. Surgery has become an essential part of the treatment of morbid obesity, notwithstanding the potential adverse events that accompany it. An appreciation of these problems is essential to the anaesthetist and intensivist involved in the management of this group of patients.
  2. Teng CL, Leong KC, Aljunid SM, Cheah M
    Asia Pac Fam Med, 2004;3(1&2):38-45.
    Aims. To document the antibiotic prescribing rate for upper respiratory tract infections (URTI) in general practice and its associated factors. Methods. Data extracted from a morbidity survey of 150 general practice clinics in three urban areas in Malaysia. Participating general practitioners recorded demographic, morbidity and process of care data for 30 consecutive adult patients using a structured form. [year of study=1999] Results. URTI contributed 940 (27.0%) of the total of 3481 encounters recorded. Antibiotic was prescribed in 68.4% of encounters with URTI; a significant proportion of the antibiotic choice was inappropriate. Half the antibiotics prescribed in this study were due to URTI. [overall antibiotic prescribing rate for all encounters=33.4%] Conclusions. General practitioners need to re-examine their own prescribing for URTI and decide whether it is consistent with current guidelines. Rational prescribing is not just part of the professional role of doctors, but will go a long way to impede the emergence of antibiotic resistance.
  3. Teng CL, Syed Aljunid SM, Cheah M, Leong KC, Kwa SK
    Med J Malaysia, 2003 Aug;58(3):365-74.
    PMID: 14750376
    BACKGROUND: The majority of primary care consultations in Malaysia occur in the general practice clinics. To date, there is no comprehensive documentation of the morbidity and practice activities in this setting.
    OBJECTIVES: We reported the reasons for encounter, diagnoses and process of care in urban general practice and the influence of payment system on the morbidity and practice activities.
    METHODS: 115 clinics in Kuala Lumpur, Ipoh and Penang participated in this study. General practitioners in these clinics completed a 2-page questionnaire for each of the 30 consecutive patients. The questionnaire requested for the following information: demographic data, reasons for encounter, important physical findings, diagnoses, investigations ordered, outpatient procedures performed, medical certificate given, medication prescribed and referral made. The morbidity (reasons for encounter and diagnoses) was coded using ICPC-2 and the medication data was coded using MIMS Classification Index.
    RESULTS: During 3481 encounters, 5300 RFEs (152 RFEs per 100 encounters) and 3342 diagnoses (96 diagnoses per 100 encounters) were recorded. The majority of the RFEs and diagnoses are in the following ICPC Chapters: Respiratory, General and unspecified, Digestive, Neurological, Musculoskeletal and Skin. The frequencies of selected aspects of the process of care (rate per 100 encounters) were: laboratory investigations 14.7, outpatient procedures 2.4, sick certification 26.9, referral 2.4, and medication prescription 244. Consultation for chronic diseases and acute infections were influenced more by demographic variables (age, employment) rather than payment system. Cash-paying patients were more likely to receive laboratory investigations and injections.
    CONCLUSION: This study demonstrated the breadth of clinical care in the general practice. Relatively fewer patients consulted specifically for preventive care and treatment of chronic diseases. The frequencies of outpatient procedures and referrals appeared to be low. Payment system results in important differences in patient mix and influences some types of practice activities.
  4. Beh CC, Zulkufli NS, Loh LM, Cheng KW, Choo LM, Cheah MW, et al.
    Trop Biomed, 2021 Dec 01;38(4):552-560.
    PMID: 35001921 DOI: 10.47665/tb.38.4.098
    Understanding of antibody kinetics against SARS-CoV-2 and its vaccines is rapidly evolving. This study aims to (1) determine post-vaccination seroprevalence; (2) compare antibody levels between vaccine types and various clinical/demographic determinants; and (3) determine post-vaccination antibody concentrations against time. This is a retrospective cross-sectional study involving 148 healthcare employees all over Malaysia. IgG Spike (RBD), IgM Spike and IgG Nucleocapsid concentration medians were compared using Mann-Whitney U or Kruskal-Wallis tests. Chi Square and Spearman correlation coefficient tests were performed to identify variables associated with antibody titers. A scatter plot of IgG Spike (RBD) against time from last vaccine dose was also plotted. At 1-month post-vaccination, all employees successfully seroconverted regardless of vaccine type, health status and COVID- 19 history. Comirnaty, convalescent, female or Malay vaccinees had significantly higher IgG Spike (RBD) titers compared to their respective counterparts. No correlation was found between age and IgG Spike (RBD) levels. Concentration of all three antibodies waned with time post-vaccination, with IgM Spike and IgG Nucleocapsid waning faster than IgG Spike (RBD).
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