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Biomedical subjects

R K Lim

Publications and source records attributed to R K Lim.

12 recordsLinked to original sources
PubMed1971

Nutritional assessment by comparative growth achievement in Malay children below school age.

Measurements of child growth have become the most accepted means of assessing the protein-calorie nutritional status of economically developing populations. International reference standards have been suggested for a number of body measurements, but there has been little evaluation of their applicability in South-East Asia.In order to delineate the present range of nutritional standards in West Malaysia, and to aid in the development of guidelines for further nutritional work in this region, anthropometric tests were made on 3 groups of children below school age belonging to the Malay ethnic group and living under diverse conditions. Children of Malaysian Army personnel differed significantly in most measurements from rural village children in Trengganu and children from a small urban elite in Kuala Lumpur. Measurements for the latter group approximated to internationally used standards of height and weight. Parental height data suggest that these differences are not primarily genetic. Anaemia, malaria, and ascariasis were common among the Trengganu children.Weight and height emerge as the measurements that are most sensitive in differentiating between the groups; arm circumferences and skinfold measurements are also useful because they are relatively independent of age. Measurement of chest and head circumferences and of crown-rump lengths appeared to be of little value.

Age Factors↗
PubMed1970

Pain.

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Analgesics↗
PubMed1969

Central nervous system activity associated with the pain evoked by bradykinin and its alteration by morphine and aspirin.

Synthetic bradykinin, a nonapeptide formed from alpha-2 globulin in plasma, injected intra-arterially or intraperitoneally in cats in doses of 10-50 mug, evoked activity in the central nervous system in pathways associated with the signaling of pain. Similar injections of bradykinin in intact normal cats and dogs evoked manifestations of pain, and in conscious humans elicited verbal reports of pain perceived in the area of injection. Single unit activity was recorded in the medial reticular formation of the brainstem, in the medial thalamus and, more laterally, among the posterior group nuclei and the suprageniculate nucleus. Bradykinin did not evoke any cortical or subcortical slow potentials such as those evoked by electrical stimulation of the foot pads. When bradykinin was given together with the electrical stimulus, the responses evoked by the latter were blocked. Morphines uppressed bradykinin-evoked activity. Aspirin caused marked fluctuations in activity, unrelated to the bradykinin injection; the bradykinin block of evoked potentials could no longer be observed after aspirin dosage. The results are discussed in terms of the peripheral and central sites of analgesic action and the likelihood of the existence of chemosensitive pain receptors.

Animals↗
PubMedDate not supplied

Eye injuries among pennant squash players and their attitudes towards protective eyewear.

A questionnaire survey on eye injuries and attitudes towards protective eyewear was conducted among 165 metropolitan pennant squash players; 163 (99%) valid responses were received. The incidence of eye injuries in the survey sample was found to be 17.5 per 100,000 playing hours with a significant proportion (26%) indicating that they had suffered at least one eye injury. Racquets were more common as the source of injury (61%) than squash balls. A large proportion of those injured consulted a doctor (63%) with approximately one-third (or 5% of the total survey sample) having been admitted to hospital for the injury. Only 8% of the sample used appropriate protective eyewear with an additional 2% believing their prescription lenses were a form of protection. The main reason given for using protective eyewear was previous injury to self or others (65% of cases). Doctors and media promotion rated poorly in causing players to use eyewear (6% for each). Most respondents believed eyewear to be of benefit, but fewer than half felt that eyewear should be made compulsory for all players. Only 6% of players said that they would give up the game if use of eyewear was made compulsory.

Attitude to Health↗
PubMedDate not supplied

Pain mechanisms.

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Analgesics↗