162 



Scientific Proceedings (127) 



TABLE II. 



Ratio between "chest volumes' ' and lung volumes. For explanation see 



Table I. 



Author. 



Number of 

 observa- 

 tions. 



V t 



^-xioo 



v° 



m 



c-xioo 





Van Slyke and Lunds- 



gaard 



Present paper 



18 

 27 



54.1 

 55.7 



37.9 

 40.3 



18.6 

 18.3 



45. 

 49.1 



74 (2034) 



Studies on lung volume. VIII. Patients with heart disease (mitral 



lesions) . 



By CHRISTEN LUNDSGAARD and KNUD SCHIERBECK. 



[From the Medical Clinic of the University of Copenhagen, Den- 

 mark.] 



The lung volumes were determined in 11 adult patients with 

 mitral lesions. Three of the patients were in the uncompen- 

 sated state of the disease. Nine were in the compensated stage. 

 In these last patients the second pulmonary sound was markedly 

 accentuated indicating an increased pressure in the pulmonary 

 circulation. Our technique was as previously described. 1 Care 

 was taken to secure full mixture in determining the total capacity. 

 All the lung volumes are given at room temperature and ob- 

 served pressure as in previous publications of the series. 



Results. Discussion will appear more complete else- 

 where 2> 3 and only the main results will be given here. Relative 

 lung volumes are given in Table I in percentage of the normal 

 relative value for total capacity, middle capacity, residual air, 

 and vital capacity, respectively (100, 62.0, 24.7, and 75.3) estab- 

 lished in a previous paper. 4 These values show in all instances 



1 Lundsgaard, C, and Schierbeck, K., Paper No. 6 of this series. 



2 Lundsgaard, C, Journ. Amcr. Med. Ass., 1923. 



3 Lundsgaard, C, and Schierbeck, K., Paper No. 6 of this series. 



