Lecture 19: Canine & Feline Preg & Dx

Question 0

are dogs CL dependent to term?

Answer 0

yes!

Question 1

what is the progesterone level during diestrus in dogs?

Answer 1

high; irrespective of pregnancy status

Question 2

when will the CL lyse?

Answer 2

luteolysis occurs in pregnant bitches 63 - 65 days following LH surge due to prostaglandin F release

Question 3

placental type of dogs:

Answer 3

endotheliocorial, zonary, deciduate

Question 4

when is palpation in dogs easiest?

Answer 4

31 - 33 days post LH peak

about 1 month after LH/ovulation

Question 5

is palpation more or less difficult 35 days after LH peak and why?

Answer 5

more difficult; bc vesicles elongate

Question 6

when is ultrasound easiest in dogs?

Answer 6

3 - 4 weeks after LH/ovulation (25 days)

Question 7

in late gestation what can be used to determine fetal wellness/

Answer 7

fetal HR - if HR drops below 160 that is severe stress and requires immediate intervention.

Question 8

what is relaxin used for in dogs?

Answer 8

• Preg dx!

Question 9

when is the relaxin test positive in dogs?

Answer 9

may be positive as early as day 21 - 22 after breeding

• if negative, recheck in 7 - 10 days is REQUIRED!
• check once at least 28 days post LH

Question 10

when is radiography most useful?

Answer 10

late in gestation for litter size

Question 11

when do fetal skulls start calcifying in dogs?

Answer 11

43 - 45 days post LH
45 days - skull
61 days - teeth

Question 12

know gestation length for dogs

Answer 12

65 +/- 1 day post LH peak

57 +/- 1 day post DIESTROUS cytology

57 - 72 days from 1st breeding

Question 13

canine herpes virus what does it cause?

Answer 13

abortion, mummies, stillborns, pre-mature delivery

Question 14

what is the transmission of canine herpes?

Answer 14

respiratory, oral, venereal

Question 15

when are pregnant bitches most at risk?

Answer 15

if they are naiive
and
3 weeks pre-partum and 3 weeks post-partum

Question 16

hypoluteoidism

Answer 16

low progesterone (< 2ng/ml) : it will result in parurition or pregnancy loss

Question 17

tx of hypoluteoidism

Answer 17

tx: P4 supplementation to term.
but MUST be stopped prior to parturition

if used early in gestation it will cause fetal masculinization

Question 18

what type of ovulators are felines?

Answer 18

induced ovulators!

Question 19

what type of placenta do cats have?

Answer 19

endotheliochorial, zonary, deciduate (same as dog)

Question 20

length of gestation in a cat?

Answer 20

65 - 67 days

Question 21

are cats CL dependent to term? anything unique?

Answer 21

yes! dependent to term but P4 CANNOT be used to dx pregnancy.

Question 22

what is the effect of relaxin in felines?

Answer 22

promotes prolactin release

Question 23

what characteristics are suggestive of pregnancy in the cat?

Answer 23

• mammary gland changes (@ 3 weeks)
• nipples are pinker and more prominent
• more docile temperment

Question 24

when can you palpate pregnancy in a cat?

Answer 24

> 2 weeks gestation

Question 25

when can you ultrasound a pregnancy in a cat?

Answer 25

as early as about 2.5 weeks post mating

Question 26

what is the effect of relaxin in a pregnant cat?

Answer 26

can be used to diagnose pregnancy after 28 days of gestation (use serum or urine)

Question 27

when is it best to use radiography in the cat?

Answer 27

• after 38 - 43 days gestation to see calcification of skull
• fetal molars calcify at 56 - 63 days
• use crown rump length to estimate gestational age