How To Measure Canine Pregnancy

Background The current expectation of breeding management clients includes supplemental services including client education and evaluation of breeding outcome orpregnancy, includingpregnancydetection, confirmation of normal gestation, estimation of litter size, and accurate estimation of day of gestation. These all require--as do clinical evaluations of bitches presented for health reasons ...

CaninePregnancyMonitoring and Fetal Assessment Publication Trend The graph below shows the total number of publications each year inCaninePregnancyMonitoring and Fetal Assessment.

Ultrasonography can be used forcaninepregnancydiagnosis, determination of gestational age, assessing foetal maturation and readiness for birth, monitoring high-risk pregnancies, assessing foetal distress, evaluating bitches in dystocia and foetal gender determination. As the quality and resolution of ultrasound machines have improved, the clinician's abilities to utilize ultrasound as an ...

Catherine runs courses on small animalpregnancyscanning and cardiac ultrasound and authored Ultrasound forCaninePregnancyScanning. Catherine founded the Animal Ultrasound Association (AUA) in 2016 sets the standard for reproductive ultrasound in small animals.

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Ultrasonography is especially helpful in differentiatingpregnancyfrom other causes of uterine distention (eg, hydrometra, pyometra, mucometra). Ultrasonographic measurements can be used to calculate gestational age (see the table Gestational Age in Dogs and Cats From Ultrasonographic Measurements ).

Variation in breed size (especially in the dog) and individual variation in measuring technique are sources of inaccuracy in predicting fetal age with ultrasound. Ultrasonography is less accurate than radiography in estimating litter size, particularly later in gestation, due to its dynamic nature.