Parturition

Question 1

How does a dog’s temperature change with parturition?

Answer 1

Temp drops below 100F, she should deliver the pups in less than 24h

Question 2

What determines “readiness for birth”?

Answer 2

Maturation of fetus
When fetus is physiologically ready

Question 3

What is the signal for parturition in many species?

Answer 3

Fetal ACTH and cortisol

Question 4

What initiated parturition in CL-dependent species?

Answer 4

Does, Sows
Decline in maternal progesterone concentrations

Question 5

What are the 3 stages of labor?

Answer 5

I: initiation of myometrial contractions
II: delivery/expulsion of fetus
III: passage of the fetal membranes

Question 6

Onset + End: Stage I Labor

Answer 6

Onset: initial uterine contractions and relaxation of cervix
End: rupture of chorioallantois (large animals) or full dilation of cervix (small animals)

Question 7

Clinical Signs: Stage I Labor

Answer 7

Anorexia
Restlessness, nervousness
Frequent lying down and standing
Mild discomfort or colic
Patchy sweating (mare)
Increased RR (bitch)
Actively running or squirting milk

Question 8

Fetal Movement: Stage I Labor

Answer 8

Head and forelimbs extend
Body rotates into dorsal position

Question 9

Onset + End: Stage II Labor

Answer 9

Onset: rupture of chorioallantois
End: delivery of fetus

Question 10

Clinical Signs: Stage II Labor

Answer 10

Active straining
Appearance of white/grey membrane (amnion) at vulva
Birth of fetus

Question 11

Onset + End: Stage III Labor

Answer 11

Onset: delivery of fetus
End: passage of fetal membranes

Question 12

How long is considered an abnormally retained placenta?

Answer 12

3 hours

Question 13

Induction of Labor: Ruminants

Answer 13

Corticosteroids

Question 14

Induction of Labor: CL Dependent Species

Answer 14

Prostaglandins

Question 15

Induction of Labor: Horses

Answer 15

Oxytocin