[Acute pulmonary edema in guinea pigs from action on the medulla oblongata]

Study of the role of the medulla oblongata in the development of centrogenous edema of the lungs showed that it develops in guinea pigs in a regular manner one minute to 2.5 hours after injury to the caudomedial parts of the dorsal nuclei of the vagus nerves. Affection of the rostral parts of the nuclei, complete removal of a nucleus, and destruction of adjacent structures with preservation of the intactness of the nuclei do not lead to edema of the lungs. The separate parts of the nuclei evidently regulate the water balance in the lungs.