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April 29, 1893


Author Affiliations


JAMA. 1893;XX(17):465-476. doi:10.1001/jama.1893.02420440003001a


During the stage of invasion there is experienced by the patient a sense of oppression of the chest, with some difficulty of breathing and an acceleration of the respiratory movements. As the disease progresses and exudation takes place the number of respirations per minute are still further, sometimes greatly, increased; and they are short, quick, anxious and difficult.

In my series of cases the number of respirations per minute ranged from eighteen to 100. In 33 per cent, they ranged between twenty and thirty. In 41 per cent, from thirty to forty. In 19 per cent, from forty to fifty. In 16 per cent, they ranged from fifty to sixty. In eight cases from sixty to seventy. In five cases eighty was reached. In one case they numbered ninety, and in two cases 100 was attained. As might be supposed, the greatest frequency was noticed in children. Very great