Heart & Cardiovascular Problems


Clues About Cardiac Arrest in Racehorses

July 26, 2010

Racehorses and other performance horses occasionally succumb to cardiac death during or after exertion, and in most cases equine researchers are at a loss as to why.... Read More


Toxin Topic: Red Maple Toxicosis

June 22, 2010

Red maple trees Acer rubrum are beautiful trees that grow extensively throughout eastern North America. However, horse owners should be aware these trees can pose a serious risk to horses. Ingestion of wilted or dried maples leaves can... Read More


Foal Heart Murmurs Could Signal Other Problems

May 13, 2010

Any foal with an abnormally high respiration rate, heart rate, blue gums, or exercise intolerance should be evaluated for heart defects. If one is found, it's a good idea to look for other congenital problems.

K. Gary Magdesian, ... Read More


Cardiology: The Equine Heart

May 01, 2010

Cardiac disease is one of the most common causes of "poor performance" in athletic horses. ... Read More


Transvenous Electrical Cardioversion Gets Good Results at Davis

April 21, 2010

Researchers at the University of California (UC), Davis are having success treating atrial fibrillation in horses through transvenous electrical cardioversion (TVEC). ... Read More


Fetal Heart Rate Measurements Aid Health Monitoring

February 26, 2010

Fetal heart rate monitoring during the second half of pregnancy can help veterinarians easily and reliably assess the health of the unborn foal, according to new research by German and Austrian veterinary scientists. However, it's unlikely to give ... Read More


Cornell Vet Researchers Investigate Atrial Fibrillation

January 12, 2010

When Sophy Jesty was 20 years old and an animal science major at Cornell, she met N. Sydney Moise, DVM, MS, Dipl ACVIM (internal medicine, cardiology), now professor of medicine and chief of the section of cardiology at Cornell's College of... Read More


Aortic Valve Prolapse Prevalence in Horses Determined by Type, Duration of Training, ACVIM 2009

August 08, 2009

Certain levels and durations of training may predispose horses to aortic valve prolapse (AVP), said Gayle Hallowell, MA, VetMB, CertVA, Dipl. ACVIM-LAIM (large animal internal medicine), MRCVS, who presented research findings at the American... Read More


Tevis Veterinarians Add New Post-Ride Check

July 30, 2009

Head Tevis Cup veterinarian Greg Fellers, DVM, will implement a new post-ride vet check this year. His check will be conducted within two hours after horses complete the 100-mile ride from Lake Tahoe to Auburn, Calif.

"What I am looking for... Read More


Third Calgary Stampede Chuckwagon Horse Dies

July 13, 2009

An outrider horse competing in the GMC Rangeland Derby chuckwagon race at the Calgary Stampede in Alberta, Canada, died Friday following a pulmonary embolism.

The Thoroughbred was the second chuckwagon race horse to succumb to a... Read More


Necropsy Shows Racehorse Died of Colitis Complications

June 22, 2009

The initial necropsy report on Team Valor's Sailor's Cap, who died suddenly in his stall three days after winning the June 14 Poker Stakes, showed that he died of probable cardiac arrest caused by colitis-X.

The Merck Veterinary Manual... Read More


Kester News Hour

March 17, 2009

Top 2008 equine studies include lawsonia, EPM, heart murmurs, etc., at the AAEP Convention.... Read More


Cardiopulmonary/Exercise Concerns for Horses

March 17, 2009

A summary of cardiopulmonary and exercise for horses from the 2008 AAEP Convention. ... Read More


Aortic-Iliac Thrombosis, Diagnosis and Treatment

March 05, 2009

He noted aortic-iliac thrombosis (TAI) can cause lameness, but the incidence in the United States is low. Damage to, and thrombus (blood clot) in, these large blood vessels might be caused by internal parasites.... Read More


No Change in Arrhythmic Horses after Human Heart Medication

February 14, 2009

In an attempt to quiet the fluttering of horses' hearts caused by atrial fibrillation, researchers in Belgium found that a human medication does not restore a normal cardiac rhythm, despite reaching therapeutic levels.... Read More


Heart Infections More Common Among Young Horses

February 07, 2009

Heart disease isn't just for the aging or overworked horse.... Read More


Equine Cardiology (AAEP 2008)

February 03, 2009

... Read More


Equine Telecardiology Progresses

October 21, 2008

When she put her stethoscope to his chest and heard what sounded like jungle drums thumping inside, she knew something wasn't right. There was no cardiac murmur, jugular venous distension, or dependent edema. What was going on? And what would happen ... Read More


Former Royal Vet College Teaching Horse Dies

October 06, 2008

Invisible, the Irish-bred black mare with the faint star on her forehead who was the curse of many equine vet students' practical exams, has died at the age of 30. She spent seven years in retirement at Read More


Rattlesnake Bite Management Recommendations

July 06, 2008

The United States is home to 26 species of rattlesnakes, making rattlesnake bites relatively common events in equine medicine. Horse owners definitely need to resist the urge to begin sucking the venom from their horse's rattlesnake bite... Read More


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