PubMed · 73093
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R F Mould, K Wrighton, D S Pickup. 1977-12-03. Mortality in a lodging-house.. https://doi.org/10.1016/s0140-6736(77)91573-2
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Effects of the beta 2-receptor stimulating drug fenoterol were investigated after administration of beta-receptor blocking agents in 12 patients with obstructive respiratory disease and a hyperreactive bronchial system (positive acetylcholine test). In a double blind trial pindolol (universal beta-receptor blocking drug) and metoprolol (a cardioselective substance) were compared after administration of equally effective doses of 5 and 100 mg respectively. Whole-body plethysmography showed that both beta-receptor blocking drugs caused no bronchial constriction; the bronchodilating effects of fenoterol were not reduced. These findings must cast doubt on the differentiation between cardioselective and non-cardioselective beta-receptor blocking agents as far as practical therapeutic implications are concerned.
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