I would like to know if a mare can scan preg. at 16 and 22 days, then scan open at 45 days and still be preg. Mare has good tone and the right horn was bigger than the left. Mare has been on regumate. Also, will regumate affect the tone of the uterus for a palpation? Have another mare on reugmate and has no tone but is preg. First mare didn't have good tone until checked preg, second mare never had good tone. Embryo looked and measured correctly on both 16 and 22 day ultrasounds. Would like to know if anyone else has had a vet miss at day 45+ on ultrasound and mare was preg.
Posted on Saturday, September 08, 2007 - 11:00 pm:
All uteri are not created equal... you will get lumps and bumps that may make one horn feel larger than the other. Just how much larger may be an important factor...
On top of that, you can have a mare that is in the process of losing (or has lost) the pregnancy after the endometrial cups have formed (~day 36), and may have a fluid filled sac with no embryo/fetus in it.
Or she might be pregnant and your vet missed it even though one would have to work pretty hard to miss a 45 day pregnancy...
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