STROPHANTHTJS SARMENTOSUS : ITS PHARMACOLOGICAL ACTION. 



389 



Experiment LIX. — continued. 





Contractions 



in 10 seconds. 





Interval. 







Notes. 









Auricles. 



Ventricle. 





After Strophanthus. 









3 minutes . 



8 



8 



The ventricle tends to contract more powerfully. 



10 „ 



8 



8 



Do. do. 



15 „ 



8 



8 



Do. do. 



20 „ 



7 



7 



Contractions regular ; the auricular movements are good ; the 

 ventricle becomes very small and pale in systole ; in diastole 

 it is only moderately large. 



25 „ 



5 



5 



The ventricle contracts well, but in diastole it shows pouches 

 at the apex and does not dilate much ; ventricular systole 

 occupies two-thirds of the cycle. 



30 „ . . 



5 



3 



Two auricular contractions precede each ventricular; the 

 ventricle is small. 



35 „ 



5 



2 



Do. do. 



40 „ 



4 



4 



Regular contractions ; ventricular diastole now occupies two- 

 thirds of the cycle, and begins before auricular systole ; the 

 auricles fail to drive all their contents into the ventricle ; 

 the ventricle contracts well, but does not dilate well ; no 

 pouchings occur now. 



45 „ 



5 



5 



Do. do. 



50 „ . . 



3 



3 



Regular in time ; ventricular diastole occupies three-fourths 

 of the cycle ; the ventricle contracts and expands well ; the 

 auricles fill and empty well. 



75 „ 







Five auricular and five ventricular contractions in 30 seconds 

 at irregular intervals ; diastolic pauses are well marked. 



85 „ 



3 



3 



As at 50 minutes. 



100 „ 



3 



3 



Do. 



105 „ 



3 



3 



Do. 



115 „ 



2 



2 



Regular and powerful contractions ; slowness is due to regular 

 pauses in diastole ; in systole, the ventricle becomes very 

 pale and small, in diastole it expands well. 



125 „ 







Ten auricular and ten ventricular contractions in 60 seconds ; 

 characters as in last note. 



145 ,. 



2 



2 



Regular and very powerful, as at 115 minutes. 



160 „ . 



2 



2 



Do. do. 



185 „ 



2 



2 



Sometimes only one contraction of all chambers occurs in 10 

 seconds, owing to long diastolic pauses. 



6 hours 55 mins. 







Eight auricular and eight ventricular contractions in 30 seconds 

 and at irregular intervals ; irregular pauses occur with all 

 chambers widely dilated ; contraction begins as a wave 

 over the auricles from left to right ; the ventricle becomes 

 very small and pale in systole. 



7 „ 10 „ . 







Two to four auricular contractions precede each ventricular 



12 „ 55 ., . 





... 



one. 

 All chambers arrested in full diastole ; occasionally the 

 auricles contract superficially. 



13 „ 3 ,. . 







Seven auricular and seven ventricular contractions in 30 

 seconds, as at 6 hours 55 minutes. 



13 „ 22 „ . 





... 



Final arrest of the heart with all chambers widely dilated. 



TRANS. ROY. SOC. EDIN., VOL. XLVII. PART II. (NO. 15). 



58 



