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doi:10.1136/bmj.326.7393.785

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Harvey Marcovitch, syndication editor (h.marcovitch@btinternet.com)

Smell is not helpful in diagnosing urine infection

Struthers and colleagues tested the common belief that if a child's urine smells unusual then it is probably infected. They checked 110 urine samples from acutely ill children, simultaneously asking parents whether the urine smelled differently from usual. Nearly half thought it did—but fewer than 6% of their children had infected urine. Roughly the same proportion was infected when parents considered the urine had a normal odour.

Archives of Disease in Childhood 2003; 88: 250

Short acting β agonists do not provoke myocardial infarction

A large epidemiological study has shown that short acting inhaled β agonists do not increase the risk of myocardial infarction in patients with chronic obstructive pulmonary disease (COPD). More than 12 000 patients aged over 55 with COPD were followed for …