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1 Laboratory of Surgical Research, New York University and Bellevue Medical College, New York City
1. The effect of different pathologic states on the minimum lethal dose of procaine hydrochloride injected into the cisterna magna was studied on dogs.
2. Pneumonia, marked post-operative infection and certain hypotensive states produced by hemorrhage, amyl nitrite, and histamine all reduced the lethal dose of procaine sufficient to cause paralysis of the respiratory center.
3. The probability of a relationship between anoxia and this reduction of the lethal dose of procaine is pointed out.
Submitted on June 4, 1933