Ultrasonography for pregnancy diagnosis and evaluation in queens
2006
Zambelli, D. | Prati, F.
In the present paper, we describe the clinical utility of ultrasonography for diagnosing and evaluating pregnancy in domestic cats. Ultrasonography is a non-invasive technique that permits an accurate diagnosis of pregnancy and allows serial evaluation of the developing embryo/fetus and the extrafetal structures. The first ultrasonographic indication of pregnancy is a gestational chamber seen on day 10 after mating as a small circular anechoic structure. From day 30, it is possible to recognize different fetal organs, and between 38 and 43 days, the gender of the fetus can be determined. Measurements obtained during the second half of gestation can be used to determine fetal age and calculations can then be made that may more accurately predict the time of parturition. Further studies are needed in the queen to determine the applicability of the echo-Doppler technique used routinely in human obstetric medicine. This type of ultrasonography could potentially provide useful information about fetal health and the maturity of the placenta.
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