The concept of nursing care which meets the needs of patients/clients from many diverse cultures is a relatively new one for British nurses. Barbara Weller explores the definitions and philosophies which surround the concept of transcultural nursing and urges nurses to avoid the adoption of narrow, ethnocentric attitudes in favour of a more critical and balanced view of cultural differences.

Cultural Characteristics↗

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AIDS focus. HIV roundup.

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Acquired Immunodeficiency Syndrome↗

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AIDS focus. Anguish in a land of smiles.

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Acquired Immunodeficiency Syndrome↗

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AIDS focus. HIV roundup.

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Acquired Immunodeficiency Syndrome↗

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AIDS focus. The second decade in South East Asia.

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Acquired Immunodeficiency Syndrome↗

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AIDS focus. HIV round-up.

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AIDS-Related Opportunistic Infections↗

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Phenytoin-folic acid interaction: a lesson to be learned.

A case of a patient who developed symptomatic phenytoin-induced folic acid deficiency is reported. Folate supplementation of 5 mg/d was followed by a decrease of serum phenytoin concentration to a subtherapeutic level with a breakthrough seizure. Estimation of phenytoin's Km-Vmax Michaelis-Menten pharmacokinetic parameters in this patient demonstrated that folate supplements indeed caused a significant decrease in the Km value. This decrease correlates with a greater affinity of the metabolizing hepatic enzymes for the drug, and hence, with the resultant increase in phenytoin's metabolism and decrease of its serum concentration and anticonvulsive effect. In an era of increasing knowledge of folate's pivotal role in various diseases, we call attention to this drug-vitamin interaction, and to the previously suggested recommendation that folate supplementation should be initiated whenever phenytoin therapy commences. Because folic acid dosages as low as 1 mg/d may perturbate phenytoin's metabolism, smaller deficiency preventive doses may be the advisable allowance for phenytointreated patients with normal pretreatment folate levels. This suggestion must be confirmed by a prospective study in a large cohort of patients.

Drug Interactions↗

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