Heart & Cardiovascular Problems


Aortic Rupture Cited in O'Connor Event Horse Death

May 12, 2008

According to a statement released on the U.S. Eventing Association (USEA) Web site, preliminary necropsy findings on the horse Tigger Too, a 17-year-old gelding, show that he passed away from an acute abdominal aortic rupture. Final necropsy result... Read More


Heart Murmurs: No Impact on Racing Performance in New Study

April 15, 2008

According to a group of researchers from the United Kingdom, heart murmurs are common in athletic horses, but do not negatively impact racing performance.

"A high prevalence of heart murmurs is known to exist in horses," explained Lesley... Read More


Circulatory and Respiratory Systems: Of Blood and Breath

April 04, 2008

The horse's circulatory and respiratory systems constitute its engine. ... Read More


Treating Irregular Heartbeats

October 01, 2007

Chances are you know someone with a heart murmur--you might even have one yourself. Usually it's discovered at birth, and most often it's nothing to worry about. The heart is fine; it just makes a sound associated with blood flow. The same can be... Read More


University of Guelph Researchers Investigating Racehorse Heart Rates

August 24, 2007

Exactly how fast is the heart rate of a racehorse as it flies around the track?

For the first time ever, two University of Guelph researchers will be able to answer this question as part of a study aimed at recording the maximum heart rate... Read More


Hennessy Dead of Apparent Heart Failure

August 11, 2007

Coolmore Stud’s talented stallion Hennessy reportedly died of apparent heart failure Aug. 9 at Haras La Mission in Argentina. The 14-year-old son of Storm Cat out of Island Kitty, by Hawaii, had shuttled to Argentina for the Southern Hemisphere... Read More


Aging and the Aortic Valve

September 14, 2006

Researchers from the United Kingdom report there is a decrease in contractile function of the horse's aortic valve with age, resulting in aortic valve disease.... Read More


Echocardiographs and Pulmonary Arterial Pressures

September 14, 2006

Researchers have found that echocardiographic measurements of the pulmonary artery, aorta, and heart chambers gave a valid estimate of pulmonary artery pressures (PAP) in horses. The ability to measure PAP is key to diagnosing and following... Read More


World Cup Winner Electrocutionist Dead

September 09, 2006

Dubai World Cup winner Electrocutionist died of an apparent heart attack Saturday, several days after an abnormality was detected in the 5-year-old horse's heart.

Dubai-based Godolphin Racing Inc. owned Electrocutionist, considered a to... Read More


Australian Toxic Feed Case Decided

July 06, 2006

An Australian court awarded $71,000 in damages after a Sydney area family’s Thoroughbred mare died and three other show horses were permanently retired due to heart conditions resulting from contaminated feed, the Sydney Morning... Read More


Treatment of Equine Heart Arrhythmia

July 01, 2005

Human defibrillators are being used successfully to treat horses with irregular heartbeats (fibrillation). Kim McGurrin, DVM, a graduate student at the University of Guelph's College of Veterinary Medicine, developed a procedure as part of her... Read More


Sudden Death: Untimely End

June 01, 2005

Sometimes horses die suddenly when they aren't involved in athletic competition. You walk out to stall or paddock one morning and your good trail horse or companion animal is lying dead, even though it had appeared normal and healthy when you fed the... Read More


BEVA Shares Education

February 01, 2005

The United Kingdom is famous for its rich history and deeply rooted traditions, but that doesn't mean its veterinarians are bound to ancient methods of equine medicine. Quite the contrary, the British Equine Veterinary Association (BEVA) hosts... Read More


Do Horses Have Heart Attacks?

January 01, 2005

Q: I read about horses that have died of apparent "heart attacks" during competitions, breeding, and even out in the field. I have had veterinarians tell me there is no such thing as a horse having a heart attack.... Read More


Impact of Valvular Heart Disease on Performance

November 03, 2004

Results of a four-year prospective study designed to determine the influence of training and heart size on atrioventricular (AV) valvular regurgitation (backflow of blood from the lower to the upper heart chambers) in Thoroughbred racehorses, an... Read More


First Look Inside the Live Equine Heart

September 01, 2004

On July 9, a human interventional cardiologist and an equine veterinarian in Lexington, Ky., successfully completed the first step of a landmark procedure to repair a heart problem in a 5-month-old Thoroughbred colt called a ventricular septal... Read More


New Drug Tried for Equine Heart Fibrillations

August 04, 2004

Veterinarians at the University of Wisconsin-Madison School of Veterinary Medicine believe they're the first to use an oral drug to resolve a chronic case of atrial fibrillation (irregular heartbeats) in a horse. ... Read More


The Live Equine Heart: A First Look (video incl)

July 12, 2004

On July 9, a human interventional cardiologist and an equine veterinarian in Lexington, Ky., successfully completed the first step of a landmark procedure to repair a heart problem in a 5-month-old Thoroughbred foal called a ventricular septal defect... Read More


Foal Care From Birth to 30 Days (AAEP 2003)

January 31, 2004

Foal care from the first few hours of life to one month can be critical in the overall health and welfare of the newborn foal.... Read More


Understanding Congestive Heart Failure

January 01, 2004

Congestive heart failure is a term describing a group of clinical signs that develop as a result of other cardiac diseases. As the name implies, equine congestive heart failure is generally an endpoint of disease, and it is considered rare in... Read More


Equine Heart Murmurs (AAEP 2002)

February 19, 2003

Despite the high incidence of murmurs in racehorses, they are very hard to diagnose. Heart murmurs are usually low-frequency sounds at the lower limit of human hearing which are difficult for the human voice to reproduce accurately.... Read More


Pericarditis Study Results Released

December 17, 2001

Pericarditis is a disease involving the sac around the heart and the heart itself. The disease is uncommon. During the spring of 2001, however, an unexpectedly large number of cases... Read More


Pacemaker Recipient Gives Birth

November 01, 2001

A Thoroughbred/Irish Draught mare received a pacemaker in groundbreaking surgery at Great Britain's Royal Veterinary (UK) College's Sefton Equine Hospital in February. Seven-year-old Xena was weak... Read More


Initial Pericarditis Survey In Yearlings Brings Good News

June 14, 2001

Dr. Doug Byars, head of the internal medicine unit at Haygard-Davidson-McGee veterinary firm in Lexington, Ky., reported that examinations on three farms of 150 Thoroughbred yearlings revealed... Read More


Central Kentucky Pericarditis Cases: Nearly 60

June 14, 2001

The incidence of known pericarditis cases in Central Kentucky has reached nearly 60 horses. At least a dozen horses have died because of the condition, which produces inflammation of, and fluid in, the sac surrounding the... Read More