The purpose of the present paper is to report rather than to explain certain observations on the effects of increased intrapleural pressure on the blood pressure. The clinical picture resulting from an increase in pressure in the pleural cavity is sufficiently definite to be termed a syndrome, and although in my experience this syndrome has been observed commonly, it has only been hinted at in the literature and is generally unknown and unrecognized. I can best present its characteristics by reporting the cases which first called it to my attention.
REPORT OF CASES
Miss E. C. was seen in consultation with Dr. O'Neill at the Evanston Hospital on Aug. 4, 1931. Five days previously, in an automobile accident, she had suffered a severe injury to the right side of the thorax. A roentgenogram showed that five ribs on the right side were broken and that the right pleural cavity was