Studies on canine pregnancy using B‐mode ultrasound: Development of the conceptus and determination of gestational age

England, G. C. W.; Allen, W. Edward; Porter, David

doi:10.1111/j.1748-5827.1990.tb00821.x

Cited by 80 publications

(125 citation statements)

References 9 publications

(4 reference statements)

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“…Of fetal structures, fetal head diameter and fetal body diameter increased at an almost fixed rate and the regression was significantly and linearly related to gestational age on day 38 to parturition, as in the previous studies [4,10,15]. Fetal crown-rump length increased at linear rate on days 35 to 49, but the regression of fetal crown-rump length was not significantly relative to gestational age compared with those of other fetal structures.…”

Section: Discussionsupporting

confidence: 52%

“…In veterinary medicine, the estimation of gestational age based on anatomic appearance and the prediction of parturition day by ultrasonographic examination are partially characterized. England et al [4] made assessments of the diameter of pregnancy structures in pregnant bitches. And Yeager et al [15] made similar estimates of fetal size during pregnancy and found that the best correlation was between fetal head diameter and gestational age.…”

mentioning

confidence: 99%

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Establishment of the Prediction Table of Parturition Day with Ultrasonography in Small Pet Dogs.

Son

Jeong

JeongHun

et al. 2001

The Journal of Veterinary Medical Science

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ABSTRACT. To establish a prediction table of parturition day the real-time B-mode ultrasonographic examinations were performed in the 8 pregnant Malteses and 10 Yorkshire terriers (total pups, 25 and 38 pups, respectively) from 18 days of gestation until the parturition. Ovulation was designated the first day of gestation (day 0). Extra fetal and fetal structures were measured from all conceptues. The parameters that exhibited the best correlation to parturition were used to compile a prediction table of parturition day. To testify the precision of the prediction table of parturition day, the 15 pregnant Malteses (48 pups) and 13 pregnant Yorkshire terriers (42 pups) with unknown mating time were examined using ultrasonography. Inner chorionic cavity diameter on days 18 to 37 and fetal head diameter on day 38 to parturition that showed the best correlation to gestational age were the most pertinent to the estimation of gestational age and the prediction of parturition day. The two parameters were used to compile a prediction table of parturition with averaged regression equations. In verificational examinations, with the exception of 1 Yorkshire terrier (3.6%) having 1 fetus, 18 of 28 bitches (64.3%) delivered exactly on the date predicted and 9 of 28 bitches (32.1%) delivered within 1 day of the date predicted. Therefore, the prediction table of parturition day seems to be a useful tool of the prediction of parturition day in practice. KEY WORDS: canine, gestational age, prediction table of parturition day, ultrasonography.

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Section: Discussionsupporting

confidence: 52%

mentioning

confidence: 99%

Establishment of the Prediction Table of Parturition Day with Ultrasonography in Small Pet Dogs.

Son

Jeong

JeongHun

et al. 2001

The Journal of Veterinary Medical Science

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“…La media del DBP del Golden Retriever fue de 29.4 mm, muy parecida a la media encontrada por England et al (1990). También se puede observar que el DBP del Bulldog Inglés, raza mediana pero de cabeza braquiocefálica, presenta un DBP mayor que el de las razas grandes, lo cual le predispone a la ocurrencia de distocias.…”

Section: Resultados Y Discusiónunclassified

Diámetro Biparietal en Fetos a Término en Varias Razas de Perros

Cahua

Quispe

2017

Rev. investig. vet. Perú

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El presente estudio tuvo por objetivo la determinación de la medición ecográfica cuantitativa del diámetro biparietal de fetos a término en perras. Se trabajó con 181 informes ecográficos de varias razas de perras en gestación cuyos fetos tenían menos de 210 latidos por minuto, y que fueron examinados en el consultorio de ecografía de la Clínica de Animales Menores de la Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima, Perú, entre los años 2000-2014.

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“…39,40 A gestational sac was consistently detected within the uterine horn on day 20 after LH surge in Beagles (18 days after ovulation). The gestational sac is simply a maturing blastocyst, inside of which is the developing embryo.…”

Section: Pregnancy Diagnosis and Fetal Developmentmentioning

confidence: 99%

“…The gestational sac is simply a maturing blastocyst, inside of which is the developing embryo. 31,34,39,40 In the cat, gestational sacs may be seen as early as 11 days after breeding. 39,40 A gestational sac was consistently detected within the uterine horn on day 20 after LH surge in Beagles (18 days after ovulation).…”

Section: Pregnancy Diagnosis and Fetal Developmentmentioning

confidence: 99%