166 



Scientific Proceedings (127) 



inspiratory position. The other lung volumes were calculated 

 by means of the normal ratio of the different lung volumes 

 (see paper VI). In the table the observed lung volumes are 

 given in percentage of the calculated normal figures. The move- 

 ment of the diaphragm was observed by X-ray. In all but two, 

 Nos. 4 and 6, a diminished excursion of chest wall (procedure 

 described in paper VII was found. In most instances a dimin- 

 ished excursion of the diaphragm was found (by fluoroscopy). 

 Fig. 1, representing the conditions in Patient No. 1, typifies the 

 conditions found in the majority of patients with emphysema 

 pulmonum. 



TABLE I. 



Observed lung volumes in 12 patients with emphysema given in percentage of 

 calculated normal lung volumes. 













Excursion 



Number of 



Total 



Middle 



Residual 



Vital 



of thorax 



patients 



capacity. 



capacity. 



air 



capacity. 



expressed as 

















per cent. 



per cent. 



per cent. 



per cent. 





1 



101 



121 



200 



69 



78.3 



2 



105 



114 



117 



101 



75.2 



3 



99 



126 



124 



91 



81.4 



4 



98 



86 



126 



88 



74.7 



5 



89 



105 



176 



60 



88.5 



6 



99 



103 



79 



106 



74.0 



7 



96 



99 



137 



80 



81.4 



8 



99 



103 



153 



82 



86.6 



9 



104 



95 



104 



106 



77.4 



10 



101 



103 



125 



95 



75.5 



11 



104 



123 



149 



88 



81.8 



12 



99 





161 



78 



80.4 



i Normal rntio 74.7. (See paper V). 



