MyMedR

A review of radiation hazards with special reference to diagnostic radiology

Ang AH

Med J Malaysia, 1973 Dec;28(2):75-9.

PMID: 4276302

A triple-curve catheter for selective arteriography

Ang AH, Lambeth JT

Med J Malaya, 1971 Mar;25(3):215-7.

PMID: 4253250

Value of cerebral angiography

Soo YS, Ang AH

Med J Malaya, 1971 Mar;25(3):168-74.

PMID: 4253242

Fulltext Categorization of low cardiorespiratory fitness using obesity indices in non-smoking Singaporean women

Pua YH, Lim CK, Ang A

Obesity (Silver Spring), 2006 Nov;14(11):1992-9.

PMID: 17135616 DOI: 10.1038/oby.2006.233

OBJECTIVE: To revisit cut-off values of BMI, waist circumference (WC), and waist-to-stature ratio (WSR) based on their association with cardiorespiratory fitness (CRF). The derived cut-off points were compared with current values (BMI, 25.0 kg/m(2); WC, 80 cm) as recommended by the World Health Organization.
RESEARCH METHODS AND PROCEDURES: Anthropometric indices were measured in a cross sectional study of 358 Singaporean female employees of a large tertiary hospital (63% Singaporean Chinese, 28% Malays, and 9% Indians). CRF was determined by the 1-mile walk test. Receiver operating characteristic curves were constructed to determine cut-off points.
RESULTS: The cut-off points for BMI, WC, and WSR were 23.6 kg/m(2), 75.3 cm, and 0.48, respectively. The areas under the curve of BMI, WC, and WSR were 0.68, 0.74, and 0.74, respectively. For a given BMI, women with low CRF had higher WSR compared with women with high CRF.
DISCUSSION: These findings provide convergent evidence that the cut-off points for Singaporean women were lower than the World Health Organization's criteria but were in good agreement with those reported for Asians.

Fulltext Otitis media with effusion: an update

Pang KP, Ang AHC, Tan HKK

Med J Malaysia, 2002 Sep;57(3):376-82; quiz 383.

PMID: 12440282

Otitis media with effusion (OME) is a very common condition seen in children, and is the commonest cause of hearing loss in an infant. It is also a fairly common condition encountered by the family practitioner, and often the family practitioner is the first doctor the parents bring the child to. Otitis media with effusion is a simple condition but, if left undiagnosed or untreated, can lead to preventable long-term consequences. Hence, a high index of suspicion is necessary, early and accurate diagnosis, prompt treatment, with close follow-up is of essence. The epidemiology, aetiological factors, clinical presentations, diagnosis, various medical and surgical options, cost-effectiveness of therapy and the impact of OME on the child's development are discussed.

Clinical applications of renal arteriography

Ang AH, Lambeth JT, Soo YS, Ong SC

Med J Malaya, 1970 Sep;25(1):8-16.

PMID: 4249503

Fulltext Pattern of rheumatoid arthritis in West Malaysia

Toh BH, Sengupta S, Ang AH, White JC, Lau KS

Ann Rheum Dis, 1973 Mar;32(2):151-6.

PMID: 4120913 DOI: 10.1136/ard.32.2.151

In West Malaysia RA appears to be less common than in temperate climates, but more common than in tropical Africa; furthermore, the incidence of gout and SLE is comparable. The clinical manifestations of RA are milder than those seen in more temperate climates. Subcutaneous rheumatoid nodules have not been observed. Positive serological tests for RF are significantly higher than in the general Malaysian population, but still lower than those reported for patients with RA in temperate climates. Of the three main ethnic groups, the highest incidence of positive results is found in the Chinese.
Study site: Arthritis Clinic, University Hospital, Kuala Lumpur (University Malaya Medical Centre, UMMC, Kuala Lumpur, Malaysia)

Fulltext A pilot randomized control cross over study evaluating the effectiveness and safety of mechanical percussor compared with conventional chest physiotherapy in adults with productive cough

Punithavathi N, Ong LM, Irfhan Ali HA, Mohd Izmi IA, Dharminy T, Ang AH, et al.

Med J Malaysia, 2014 Feb;69(1):16-20.

PMID: 24814623 MyJurnal

INTRODUCTION: Conventional Chest Physiotherapy (CCPT) remains the mainstay of treatment for sputum mobilization in patients with productive cough such as bronchiectasis and "Chronic Obstructive Airway Disease" (COPD). However CCPT is time consuming requires the assistance of a physiotherapist and limits the independence of the patient. Mechanical percussors which are electrical devices used to provide percussion to the external chest wall might provide autonomy and greater compliance. We compared safety and efficacy of a mechanical chest percusser devised by Formedic Technology with conventional chest percussion.
METHODS: Twenty patients (mean age 64years) were randomly assigned to receive either CCPT or mechanical percussor on the first day and crossed over by "Latin square randomisation" to alternative treatment for 6 consecutive days and the amount of sputum expectorated was compared by dry and wet weight. Adverse events and willingness to use was assessed by a home diary and a questionnaire.
RESULTS: There were 13 males and 7 females, eight diagnosed as bronchiectasis and 12 COPD. The mean dry weight of sputum induced by CCPT (0.54g ± 0.32) was significantly more compared with MP (0.40g + 0.11); p-value = 0.002. The mean wet weight of sputum with CCPT (10.71g ± 8.70) was also significantly more compared with MP (5.99g ± 4.5); p-value < 0.001. There were no significant difference in adverse events and majority of patients were willing to use the device by themselves.
CONCLUSION: The mechanical percussor although produces less sputum is well tolerated and can be a useful adjunct to CCPT.

The impact of music guided deep breathing exercise on blood pressure control - A participant blinded randomised controlled study

Kow FP, Adlina B, Sivasangari S, Punithavathi N, Ng KK, Ang AH, et al.

Med J Malaysia, 2018 08;73(4):233-238.

PMID: 30121686 MyJurnal

INTRODUCTION: As pharmacological treatment of hypertension has become a burden worldwide, the study looked into nonpharmacological ways of reducing blood pressure. The objective was to determine if music guided, slow and deep breathing will reduce the blood pressure among patients with hypertension in eight weeks.

METHODS: A participant blinded, multi-centre, randomised controlled trial was conducted in which the participants in the intervention group (IG) practiced deep breathing exercise guided by sound cues and those in the control group (CG) listened to the music. The primary end point was reduction in blood pressure at eight weeks.

RESULTS: 87 patients, 46 males and 41 females with mean age of 61.1 years were recruited and 93.1% of them successfully completed the study. There was significant reduction in systolic and diastolic Blood Pressure from baseline by 8 weeks in both groups. The reduction in Mean systolic blood pressure (SBP) in the control arm was 10.5mmHg compared to 8.3mmHg (p<0.001) in intervention group. Diastolic blood pressure (DBP) reduction in control and intervention groups were 5.2 mmHg (p<0.001) and 5.6 mmHg (p<0.001) respectively. The absolute difference in SBP reduction from baseline in IG & CG was -2.2 (95%CI: -7.8 to 3.5) and DBP was -0.4 (95%CI: -2.9 to 3.6). However, blood pressure reduction between the two groups was not significant.

CONCLUSIONS: Both listening to music and deep breathing exercise were associated with a clinically significant reduction in SBP and DBP. However, deep breathing exercise did not augment the benefit of music in reducing BP.

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