Boehringer Ingelheim has released details of research presented at the 29th World Veterinary Congress which shows dogs with congestive heart failure (CHF)  due to myxomatous mitral valve disease (MMVD) live longer when treated with pimobendan (Vetmedin®) compared with a commonly used ACE inhibitor.

The results of the QUEST trial, the largest international study of its kind to be conducted amongst dogs with congestive heart failure, are due to be published in the Journal of Veterinary Internal Medicine (JVIM) later this year.

The condition myxomatous mitral valve disease (MMVD) accounts for approximately 75% of all cases of CHF in dogs2. MMVD is associated with the thickening of the cusps of the mitral valve (one of the main one-way valves within the heart), affecting the flow of blood from the heart to the rest of the body. Although there is no cure for CHF due to MMVD, there are treatments available to manage the condition, improving the quality and length of the dog's life.

Professor Jens Häggström, lead investigator of the QUEST trial from the University of Uppsala, Sweden, commented that "the QUEST trial is a significant milestone in our efforts to reassure both, veterinarians and dog owners, that there is compelling evidence to show that pimobendan is an effective treatment for CHF that prolongs their dog's life and providing pet and owner with more quality time together."

The QUEST trial was a randomised, positive-controlled, multi-centre trial conducted at 28 sites across 11 countries, and is the largest study of its kind ever conducted in veterinary cardiology. The study compared a pimobendan group with a group treated with benazepril hydrochloride on top of background diuretic therapy. The trial spanned three years and followed dogs to death, euthanasia or treatment failure leading to withdrawal from the trial.  

Research by Boehringer has also shown that over 50% of dog owners in the UK are unaware that their dog may be at risk of heart failure. Heart disease affects one in four dogs over seven years of age, and the lack of knowledge about this serious, life-threatening condition suggests that there is a need for better education amongst dog owners on how to recognise the disease, and how to maintain their dogs' heart health.

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