ULTRASSONOGRAFIA DE ALTA FREQUÊNCIA PARA AVALIAÇÃO DO DESENVOLVIMENTO GESTACIONAL E DA FETOMETRIA EM CADELAS
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2009-11-16
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Universidade Federal de Goiás
Resumo
The monitoring and well care during the pregnancy is related to health born products. Considering that in canine reproduction the mate day is not a confident mark for fecundation because the sperm can be available during the estrus and the bitch can ovulate for seven to ten days and this can substimate the parturition day and the fetal growth. The knowledge of canine physiology and embryology during pregnancy and the pos partum associated of the correct application of diagnostic techniques help veterinarian to request for the best way to diagnose and chase the pregnancy. Physics examination, laboratory survey and imaging diagnostic are the principal tools for diagnose and prognoses of pregnancy. The image diagnostic is the most excellent technique to evaluate canine pregnancy. Radiographs and ultrasounds are accessible and can provide vital informations of the mother health and fetal development. This study s aim is to evaluate the morphological development of the bitch and fetus during pregnancy using high frequency transducer (12 MHz) and also compare the ability of the frequencies 7.5 MHz, 10 MHz and 12 MHz in measurements of fetal and extra fetal structures. To achieve this objectives it was scanned 25 bitch, two French bulldogs, one English bulldog, one American cocker spaniel, one lhasa-apso, two German sptiz, one Maltese, one pug, one schnauzer, two sheltland shepherd, ten shi-tzu and two Yorkshire terriers, weighting between three and 19 kilograms and age among two to six years from a commercial kennel, the animals were scanned by a unique examinator every seven days, the date day was used for mark the beginning of reproduction time, and the most near day of the date was the Zero week of scanning. The animals was follows by serial scanning and the events of the mother and the puppies were registered. The purpose of this study was to chase the pregnancy using high frequency transducer of 12MHz to determinate the period of appearance of fetal and extra fetal structures, which provides data s for parturition time and fetal maturity. The high frequency shows to be efficient for early diagnose of pregnancy, since was possible to identified the ovary and uterus with 2,7±2,1 days, gestational sac in 9,7±2,2 days of gestation, the embryos and heart beating were noticed with 16,7±2,2 days, the members arrows and bipolar shape appears in 23,7±2,2 days of pregnancy, fetal movement and de identification of the stomach were possible with 30,7±2,2 days, the bladder, skeleton, lungs and liver were visualized with 37,7±2,2 days, the kidney appears with 44,7±2,2 and pos partum uterus was identified with 65,7± 2,3days .Additionally contributing for seeking the fetal and extra fetal structures that provides security for estimation of parturiation date. Also was to propose a protocol of scanning to follow the preganancy period and pursue gestational diagnoses, fetal development and disorder during pregnancy comparing the ability of transducer of 7.5 MHz, 10 MHz and 12 MHz in the measurements and acoustic resolution. The gestation time was better avaluated in the second, fourth and seventh week, which shows the best protocol for track the pregnancy in the canine, additionally the high frequency demonstrate to improve the resolution and accuracy of measurements of fetal and extra fetal paramanters, but it not shows to be different from low frequency.
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FERRARI, Marlon. Ultrasound HIGH FREQUENCY FOR EVALUATION OF DEVELOPMENT AND GESTATIONAL FETOMETRIA bitches. 2009. 70 f. Dissertação (Mestrado em Ciências Agrárias - Veterinaria) - Universidade Federal de Goiás, Goiânia, 2009.