Fig. 5
From: A retrospective study on dystocia in the cat, evaluation of 111 cases
Kitten mortality in relation to ultrasound diagnosis. All fetuses normal=all observed fetuses had a heart rate ≥180 bpm. Fetal stress=one or more fetuses having a low heart rate, but no dead fetuses observed, Fetuses without a heartbeat=one or more fetuses had no detectable heartbeat. a) Litters with stillborn kittens after ultrasound evaluation in relation to ultrasound diagnosis of fetal heath. Numbers of litters displayed within bars. b) Mortality of individual kittens in the different categories. Numbers of kittens displayed within bars. abBars with different letters differs