Page 999 - Small Animal Internal Medicine, 6th Edition

CHAPTER 55 Clinical Conditions of the Bitch and Queen 971

VetBooks.ir

FIG 55.19
Tocodynamometry session with a pregnant queen.

FIG 55.18
Hydrops fetalis (water puppy) in a Labrador Retriever. Fetal
oversize caused an obstructive dystocia.

60
mm Hg 45
30
15 C C
0 1 2 3 4 5 6 7 8 9 10
60
mm Hg 45
30
15 C C
10 11 12 13 14 15 16 17 18 19 20

60
mm Hg 45
30
15 C C
A 20 21 22 23 24 25 26 27 28 29 30

FIG 55.20
Tocodynamometry. (A) Abnormal tocodynamometry recording.
X axis is mm Hg; y axis is time in minutes. (B) Rupture of a
B uterine horn (arrow) in the bitch with this abnormal
tocodynamometry.