Resumo
Background: Ultrasound is commonly used in queens for diagnosis and monitoring of pregnancy and may also be used to estimate the date of birth in cats with unknown date of mating, representing a valuable aid in clinical practice and in reproductive programs. The determination of gestational age can be made based on sonographic fetal measurements. In bitches, the conformation of the cranium should be considered in proportional variations in measurements because it interferes with predicting parturition date. Although domestic cats do not show a large variation in terms of size, they present variation in the cranial conformation. So far, there is no study that has produced mathematical equations for determination of gestational age in cats considering these differences. Thus, there is a widespread use of these equations that can lead to mistakes in this estimation. This study aimed to verify the accuracy of prediction of delivery date in cats of different cranial conformation through mathematical equations enshrined in clinical practice, using different sonographic measurements and verify the effect of litter size on the accuracy of determination of days to delivery. Materials, Methods & Results: Sonographic examinations were performed on pregnant brachycephalic and mesaticephalic cats. Biparietal and abdominal diameters and depth of the fetal diencephalo-telencephalic vesicl
A ultrassonografia é comumente utilizada em gatas para diagnóstico e acompanhamento da gestação, podendo ainda ser utilizada para estimar a idade gestacional e a data do parto em gatas com cópulas múltiplas ou data de cobertura desconhecida representando uma valiosa ajuda na prática clínica e nos programas reprodutivos. A determinação da idade gestacional pode ser feita com base em medidas ultrassonográficas, podendo ser utilizados, na segunda metade da gestação, os diâmetros biparietal e abdominal ou a profundidade da vesícula diencéfalo-telencefálica. [...]
Resumo
Background: Ultrasound is commonly used in queens for diagnosis and monitoring of pregnancy and may also be used to estimate the date of birth in cats with unknown date of mating, representing a valuable aid in clinical practice and in reproductive programs. The determination of gestational age can be made based on sonographic fetal measurements. In bitches, the conformation of the cranium should be considered in proportional variations in measurements because it interferes with predicting parturition date. Although domestic cats do not show a large variation in terms of size, they present variation in the cranial conformation. So far, there is no study that has produced mathematical equations for determination of gestational age in cats considering these differences. Thus, there is a widespread use of these equations that can lead to mistakes in this estimation. This study aimed to verify the accuracy of prediction of delivery date in cats of different cranial conformation through mathematical equations enshrined in clinical practice, using different sonographic measurements and verify the effect of litter size on the accuracy of determination of days to delivery. Materials, Methods & Results: Sonographic examinations were performed on pregnant brachycephalic and mesaticephalic cats. Biparietal and abdominal diameters and depth of the fetal diencephalo-telencephalic vesicl
A ultrassonografia é comumente utilizada em gatas para diagnóstico e acompanhamento da gestação, podendo ainda ser utilizada para estimar a idade gestacional e a data do parto em gatas com cópulas múltiplas ou data de cobertura desconhecida representando uma valiosa ajuda na prática clínica e nos programas reprodutivos. A determinação da idade gestacional pode ser feita com base em medidas ultrassonográficas, podendo ser utilizados, na segunda metade da gestação, os diâmetros biparietal e abdominal ou a profundidade da vesícula diencéfalo-telencefálica. [...]