College of Veterinary Medicine » » cardiology http://www.vetmed.ufl.edu UNIVERSITY of FLORIDA Thu, 13 Nov 2014 14:58:28 +0000 en-US hourly 1 http://wordpress.org/?v=4.0.1 UF veterinarians develop technique to test for manatee heart problems http://www.vetmed.ufl.edu/2013/06/27/uf-veterinarians-develop-technique-to-test-for-manatee-heart-problems/ http://www.vetmed.ufl.edu/2013/06/27/uf-veterinarians-develop-technique-to-test-for-manatee-heart-problems/#comments Thu, 27 Jun 2013 13:37:36 +0000 http://vetmed.sites.medinfo.ufl.edu/?p=6099  

An adult manatee receives an echocardiogram by Dr. Amara Estrada, a UF veterinary cardiologist, in the field at a Crystal River health assessment in the fall of 2011.

An adult manatee receives an echocardiogram by Dr. Amara Estrada, a UF veterinary cardiologist at Tampa’s Lowry Park Zoo. (Photo by Dave Parkinson, Lowry Park Zoo)

Leisurely swims in warm, tropical waters fueled by the gaze of admiring fans and a healthy vegetarian diet.

The life of a manatee hardly seems likely to prompt concerns about heart disease. But researchers at the University of Florida say the lumbering, loveable sea cow’s ticker deserves a closer look because of the animal’s endangered status.

That’s why they’ve developed a technique to test for cardiac problems in endangered manatees, both in the wild and in captivity. The new technique will enhance knowledge of how the manatee heart functions.

The UF researchers are using the technique to gather data they hope to share with wildlife and zoo veterinarians to ultimately save more manatee lives. Collaborating with scientists from Tampa’s Lowry Park Zoo and the Florida Fish and Wildlife Conservation Commission’s marine mammal pathology laboratory in St. Petersburg, they are using echocardiography on the large creatures, making use of a specially designed table built to hold animals weighing up to 2,000 pounds.

“There are a lot of gaps in our knowledge base on basic anatomy and physiology of manatees due to the obvious limitations of working with a 1,000- to 1,500-pound animal that spends its entire life in the water,” said Dr. Trevor Gerlach, an intern in UF’s aquatic animal health program and lead author on a paper that documents the first phase of the researchers’ study in the June issue of the Journal of Zoo and Wildlife Medicine. “Due to their current endangered status, it is important that we understand the animal in its entirety so that we can better tailor conservation efforts for the species.”

The researchers’ long-term goal is to provide practitioners at rehabilitation facilities and those working in the field with data from clinically healthy animals. Such animals could be compared to animals of concern to determine if cardiac disease is present.

To allow for effective testing, the researchers first developed a table built to hold the weight of 2,000-pound animals that were part of a large-scale manatee health assessment conducted by the U.S. Geological Survey in Crystal River. Fourteen healthy, wild and captive Florida manatees underwent echocardiography, administered using the table technique, between fall 2011 and winter 2012. The group included eight females and six males of various ages.

Manatee sonogram

A manatee receives an echocardiogram administered by Dr. Ivan Sosa, center, a UF veterinary cardiology resident. Also shown assisting are veterinary technician Melanie Powell, second from right, and Dr. Trevor Gerlach, an aquatic animal health intern, far right. (Photo courtesy of Lowry Park Zoo.)

“We were able to clearly visualize all valves and chambers,” Gerlach said, adding that other key indicators of heart function also were successfully obtained. Some abnormalities in the study animals also were documented.

“Our results indicate that echocardiography in the Florida manatee is possible, which has both clinical and research implications in larger epidemiologic studies evaluating diseases of the cardiopulmonary and cardiovascular systems,” Gerlach said.

Although extensive research has been conducted on comparative anatomy, physiology and ecology of sea cows, very few studies have evaluated the manatee heart. Basic cardiac morphology and a test called an electrocardiogram have been examined, but the diagnostic value is limited to electrical imbalances in the heart, the researchers said.

“Echocardiography is the gold standard for diagnosing valve diseases and structural abnormalities, and provides other information as well,” Gerlach said.

Researchers are finishing up the second phase of the study, which entails collecting more data from echocardiographs to establish normal testing parameters for manatees of various ages.

“Once we establish the parameters, we can begin larger epidemiological studies on the prevalence of heart disease in the wild population, which is one of our long-term goals,” Gerlach said.

Dr. Bob Bonde, a manatee researcher with the USGS, praised the new technique.

“Out-of-water, real-time assessment of these large aquatic mammals will benefit our evaluation of manatee health-related indices in the wild population,” “Knowledge of manatee reproductive fitness and nutritional condition is paramount to our fully understanding their recovery.”

Dr. Amara Estrada, a veterinary cardiology specialist who mentored Gerlach while he was a UF veterinary student and assisted with his research, said the collaborative aspects of the project were especially valuable to her both professionally and personally.

“The opportunity to work with such a diverse group of people toward a common goal is especially meaningful to me as a clinician/researcher and can only be accomplished by being a part of the University of Florida,” Estrada said.

]]>
http://www.vetmed.ufl.edu/2013/06/27/uf-veterinarians-develop-technique-to-test-for-manatee-heart-problems/feed/ 0
Mending hearts and forging discoveries in animal health http://issuu.com/villagejournal/docs/vol9iss2/35 http://issuu.com/villagejournal/docs/vol9iss2/35#comments Mon, 08 Apr 2013 21:00:03 +0000 http://vetmed.sites.medinfo.ufl.edu/?p=5872 http://issuu.com/villagejournal/docs/vol9iss2/35/feed/ 0 Amara H. Estrada http://www.vetmed.ufl.edu/about-the-college/faculty-directory/amara-estrada/ http://www.vetmed.ufl.edu/about-the-college/faculty-directory/amara-estrada/#comments Sat, 24 Sep 2011 23:32:25 +0000 http://vetmed.sites.medinfo.ufl.edu/?page_id=1152 Associate Professor and Associate Chair for Instruction – SA Cardiology

Department of Small Animal Clinical Sciences
estradaa@ufl.edu
PO Box 100126
2015 SW 16th Ave
Gainesville, FL 32608-0126
352-392-2226
FAX: 352-846-2445

Education

  • Diplomate, American College of Veterinary Internal Medicine, subspecialty of Cardiology, 2002
  • Residency, Cardiology, Cornell University College of Veterinary Medicine, Ithaca, NY, 1999-2002
  • Internship, Small Animal Medicine and Surgery, University of Tennessee College of Veterinary Medicine, Knoxville, TN, 1998-1999
  • DVM, Veterinary Medicine, University of Florida College of Veterinary Medicine, Gainesville, FL, 1994-1998
  • BS, Zoology, University of Florida, Gainesville, FL, 1989-1993

Honors and Awards

  • Morris Animal Foundation “Thank Your Vet”, 2009
  • CE Cornelius Young Investigator Award, College of Veterinary Medicine, 2008
  • Florida Association of Kennel Clubs, Clinical Investigator Award, 2006
  • University of Florida Outstanding Young Alumni Award, 2006
  • University of Florida Faculty Superior Accomplishment Award, 2006

Research Interests

Electrophysiology; Pacing therapy; Complex arrhythmias; Cardiac interventional therapy; Cardiac stem cell therapy.

Recent Publications

Additional publications here

]]>
http://www.vetmed.ufl.edu/about-the-college/faculty-directory/amara-estrada/feed/ 0