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Portable Ultrasound Solution Blog

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Equine Reproduction Ultrasound Images

  
  
  

 E.I. Medical Imaging had a great time seeing old friend and making new ones at the 2011 AAEP (American Association of Equine Practitioners) last week. We thought it would be fitting to post some equine ultrasound images.

 13 Day Equine Pregnancy

 

21 Day Equine Pregnancy

 

28 Day Equine Pregnancy

 

38 Day Equine

 

 

Click here for more information on the IBEX portable ultrasound

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Comments

I just had a mare abort twins at 8 1/2 months. Ultrasound test day after insemination for ovulation, 14 days for preg. (in foal). 21 day ultrasound , 28 day ,42 days, 61 days. After 5 ultrasounds since pronounced "in foal", how is it possible a twin could be missed ?
Posted @ Monday, December 05, 2011 7:03 PM by Joe Di Nicola
It is certainly unusual for twins to go unrecognized with good ultrasound monitoring. At the ovulation check post-insemination, we (veterinarians skilled at reproductive ultrasound) look carefully for additional follicles that may proceed to ovulation before the corpus luteum can fully develop. Occasionally at 14 day pregnancy exams, twins are mistaken for uterine cysts; however, we generally recheck these suspicious mares a few days later and rule out twins if the cystic structure has not moved or grown. Most experienced veterinarians are careful about this, as twins should be identified and dealt with prior to implantation at 17 days. After the fetus and heartbeat are clearly visible (28 days or so), it would be relatively difficult to overlook twins. It is important that we are careful not to rush during a pregnancy ultrasound, as we can develop the habit of aborting the exam once we confirm a single pregnancy; we need to make sure to visualize the entire uterus in order to rule out twins. A good practice to adopt is checking a blood sample for progesterone level at the 14 day pregnancy exam. This test will not only help you identify mares that are not producing enough hormone to maintain pregnancy, but excessively high levels can be consistent with twins as well (due to multiple CLs). Comment by: Dr Erika Wierman
Posted @ Wednesday, December 07, 2011 12:40 PM by Mia Varra
Hi, I usually don’t post comments. But, I had to say this was a really good post. Great site! 
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Posted @ Tuesday, February 07, 2012 3:23 AM by trx trainerssale
Hi, I have a 20 year old mare we are tryinig to breed. We just did a 16 day ultrasound, and my vet didnt not see an embryo, but he did see fluid. This is her 5th ultrasound since we started the process of breeding her, and the only one that has shown any fluid. She has had a culture that was clean pre-breeding, and this is the third time she has been inseminated. My breeder thinks she maybe bred after-all, and wants us to wait and do a 21 day ultrasound before we move forward with trying to breed again. Any thoughts?
Posted @ Wednesday, June 06, 2012 10:17 PM by Mara
Hi Mara! 
There are many variables to consider in the case of your mare, the first of which is her age. Has she carried a foal before? Although 20 is getting up there for any mare, it can be especially difficult to get a maiden mare of that age to conceive. Is she cycling well? Are you using fresh or frozen semen? Fluid is often a sign of inflammation; even if her culture was clean, she may be having an inflammatory reaction to the semen. Alternatively, she may be pooling urine into her uterus, which can be common in older mares. I certainly agree that re-evaluating within a week is a good plan. If she is indeed open, a uterine culture and cytology is in order, and more advanced diagnostics such as a biopsy or endoscopic exam may be warranted if these tests reveal nothing notable (although given her age, you may have poor luck getting her in foal despite your best efforts). 
Dr. Erika Wierman, E.I.Medical Imaging
Posted @ Thursday, June 07, 2012 9:10 PM by Dr. Erika Wierman
Thank you for the response! Yes, my mare has been bred before. She has had 4 foals, but her last foal was in 2002, so it has been quite a while. She cycles well, and always has a consistent heat cycle, and shows obvious signs of heat. We are scheduled for another ultrasound tomorrow, I am anxious for the results. I'm hoping we are able to get her in foal, given her overall health, but it has been quite a process already. 
 
Thanks Again, and thank you for the great images, they have been extremely helpful! 
 
Mara
Posted @ Thursday, June 07, 2012 9:51 PM by Mara
I am a standardbred breeder, 10 years ago i purchased my own ultrasound and after 2-3 years i figured it out. I do have a question for someone. I recently preg checked a mare, i always examine the cervix for tone and if its open. Anyway i checked this mare and her cervix was open, so i found what i thought was a cyst so we called in the vet, vet called her in foal. Is it normal for a mare to be in foal with a open cervix?? I did not think it was possible. Thanks in advance
Posted @ Thursday, July 12, 2012 11:43 AM by Bobby Gordon
Hello Bobby! 
 
What an interesting question!  
 
Obviously the cervix has a very important function during pregnancy, and a cervix that is compromised in any way can certainly affect a mare's ability to carry a foal to term. In practice, the most common example of this that I saw routinely were mares that had sustained cervical damage during a dystocia, and as a result required reconstructive surgery. Due to extensive scar tissue and fibrosis, a cervix that has been repaired sometimes is not able to fully open or close. 
 
I digress! I assume by the wording of your email that this was the first pregnancy check for this mare - presumably 14-17 days or so? During that time the embryonic vesicle can look very much like a cyst, so it is very appropriate to alert your veterinarian for a recheck. While a mare with cervical problems can certainly CONCEIVE, her ability to maintain the pregnancy may be hindered. My suggestion to you would be to treat her like a very high-risk pregnancy and to monitor her often with ultrasound. Remember, a fetus will grow and develop while a cyst remains the same. Take measurements, store video loops, look for heartbeats and other signs of viability. In addition, if you believe the cervix is compromised for any reason, you may want to make sure the mare has a good Caslick suture to ward off contamination of the reproductive tract. Her pregnancy should be monitored for signs of placentitis for this reason (thickening or separation of the placenta, as well as gross vaginal discharge). 
 
Best of luck to you! 
 
Dr. Erika Wierman 
E.I. Medical Imaging
Posted @ Wednesday, July 18, 2012 5:39 PM by Dr. Erika Wierman
" E.I. Medical Imaging had a great time seeing old friend and making new ones at the 2011 AAEP (American Association of Equine Practitioners) last week" 
 
- yeah I do like it then. 
thanks, dental sealants
Posted @ Wednesday, October 23, 2013 2:46 AM by Melanie
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