Prolonged Pregnancy

Author(s):  
Dhammike Silva ◽  
Dilip Visvanathan ◽  
Sujatha Thamban
Keyword(s):  
Author(s):  
Paolo Rosati ◽  
Silvia Buongiorno ◽  
Silvia Salvi ◽  
Antonio Lanzone ◽  
Alessandra Familiari

1932 ◽  
Vol 51 ◽  
pp. 1-7 ◽  
Author(s):  
L. Mirskaia ◽  
F. A. E. Crew

Summary1. The pregnancy rate of primiparæ, suckling their young, was, in this experiment, 24·1 per cent.; that of multiparæ suckling their young, 50 per cent. It is shown that this difference is not due to differences in the incidence of ovulation associated with postpartum œstrus. The suggested explanation of this difference between puberal and adult groups is that a certain level of somatic maturity is a prerequisite for full reproductive activity.2. In all cases the duration of pregnancy was prolonged. The degree of prolongation was variable and could not be related to the number of young in the uterus or suckling. The results provide no support for the suggestion that this prolongation, due to delayed implantation of the fertilised ova, is to be referred to an inhibitory action on the part of the mammary gland. The suggestion is made that the delayed implantation and prolonged pregnancy are due to inability on the part of the corpus luteum to cater adequately for implantation and lactation synchronously.


2006 ◽  
Vol 28 (3) ◽  
pp. 298-305 ◽  
Author(s):  
E. Strobel ◽  
P. Sladkevicius ◽  
L. Rovas ◽  
F. De Smet ◽  
E. Dejin Karlsson ◽  
...  

1989 ◽  
Vol 161 (4) ◽  
pp. 916-920 ◽  
Author(s):  
Carl Cucco ◽  
Mark A. Osborne ◽  
Luis A. Cibils

BMJ ◽  
1955 ◽  
Vol 2 (4941) ◽  
pp. 715-719 ◽  
Author(s):  
G. B. Gibson
Keyword(s):  

1989 ◽  
pp. 74-85 ◽  
Author(s):  
Bruce A. Harris
Keyword(s):  

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