. Transactions of the American Climatological and Clinical MOVABLE MEDIASTINUM AND THE MANOMETER 155. 156 CD. PARFITT the efficiency of which hears an inverse relation to the degreeof distension. In either case, also, the pressures will be modified bythe degree of expansion of the treated lung and some con-fusion in interpretation may be caused. As pointed out byHamman and Sloan, a re-expanded lung is shown by a verygradual rise in pressure on introducing each decilitre of gas,while a lung that remains collapsed is shown by a slow riseat first, and then a very sudden and marked r
. Transactions of the American Climatological and Clinical MOVABLE MEDIASTINUM AND THE MANOMETER 155. 156 CD. PARFITT the efficiency of which hears an inverse relation to the degreeof distension. In either case, also, the pressures will be modified bythe degree of expansion of the treated lung and some con-fusion in interpretation may be caused. As pointed out byHamman and Sloan, a re-expanded lung is shown by a verygradual rise in pressure on introducing each decilitre of gas,while a lung that remains collapsed is shown by a slow riseat first, and then a very sudden and marked rise. Thestationary points already mentioned, at which the pressurefails to rise following the introduction of one or two con-secutive decilitres of gas, help, we think, to distinguish suchconditions. (See A, c, D, Chart I, and A and B, Chart II.)They are points of emphasis in the curve characteristic ofthe slow rise of pressure found when the mediastinum ismovable. They may, perhaps, be explained by a somewhatirregular and momentarily more marked satisfaction of theelasticity of the functionating lung, the gra
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmedicine, bookyear191
