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19 wrz 2023 · Ultrasonography can be used for canine pregnancy diagnosis, 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.
Doppler-type instruments allow one to “hear” the fetal heart, which beats 2–3 times faster than that of the dam. Placental sounds may also be heard. Ultrasonography is especially helpful in differentiating pregnancy from other causes of uterine distention (eg, hydrometra, pyometra, mucometra).
The beating fetal heart may be seen as a distinct flickering by day 23-24, but may not be easily detected until day 25. U/S equipment of greater or lesser resolution may detect these and other landmark states or events earlier or later, respectively.
Ultrasonography is of particular value in assessing fetal viability and distress. Normal fetal heart rate has been reported to be twice that of maternal heart rate and is a reliable indicator of fetal viability. Bradycardia is the normal response of a fetus to hypoxia and should be assessed in cases of dystocia.
14 wrz 2021 · In addition to normal sonographic appearance and common conditions of the scrotum and testes, prostate, uterus, and ovaries, this article discusses the use of ultrasound for diagnosis of and evaluating pregnancy, fetal maturation, and fetal stress during dystocia.
10 kwi 2023 · Canine ultrasound scanning for pregnancy determination is a valuable tool for ensuring the health and well-being of your pregnant dog and her future puppies. These procedures offer early confirmation of pregnancy, help assess fetal development, and provide vital information for planning and preparation.
Ultrasonographic foetal biometry is applied both in veterinary and in human medicine. In women accurate measurements are critically important to various aspects of obstetric management, including the determination of gestational age, the prediction of parturition term, the estimation of foetal weight and the detection of growth retardation.
