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Effect of protriptyline on ventilatory responses to hypercapnia and asphyxia in normal subjects.

Author(s): Simonds AK, Carroll N, Branthwaite MA, Saunders NA

Affiliation(s): Dept of Thoracic Medicine, Brompton Hospital, London.

Publication date & source: 1989-09, Eur Respir J., 2(8):758-62.

Publication type: Clinical Trial; Randomized Controlled Trial

A double-blind crossover study was undertaken to assess the effect of protriptyline on ventilatory responses in normal subjects. Seven subjects received in random order placebo, 10 mg and 20 mg protriptyline daily for 2 weeks. Measurements of hypercapnic ventilatory response (HCVR) and asphyxial hypoxic ventilatory response (HVR) were made before treatment, 6-8 h after the first dose, and after 2 weeks treatment. Mean HCVR and HVR following 10 mg and 20 mg protriptyline did not differ significantly from measurements on placebo, neither for the single dose study or after 2 weeks.

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