PMID: 15222736Jun 30, 2004Paper

Comparison of systolic cardiac function before and after treatment of atrial fibrillation in horses with and without additional cardiac valve insufficiencies

Veterinary Research Communications
H Gehlen, P Stadler

Abstract

Clinical, electrocardiographic and echocardiographic examinations were conducted before therapy and 4 days after conversion to normal sinus rhythm in 15 horses with a history of atrial fibrillation of 2-6 months duration. Seven horses showed no other signs of cardiac disease. Four horses suffered additionally from mitral valve insufficiency, while six horses had aortic valve insufficiency, including two of the four horses with mitral valve insufficiency, but none had signs of congestive heart failure. Doppler echocardiographic estimates of various variables were made for assessment of systolic heart function. These included heart rate, stroke volume, cardiac output and cardiac output per kg of body weight (heart index). After conversion to normal sinus rhythm, the horses without heart valve insufficiency showed a statistically significantly decreased heart rate (-24%) and cardiac output (-3%), but an increase in stroke volume (+8.4%) and heart index (+9%). The horses with heart valve insufficiency experienced a statistically significant decrease in heart rate (-21%) after conversion to normal sinus rhythm, but showed an increase in all other variables. Cardiac output increased statistically significantly by 20%, stroke volume b...Continue Reading

Citations

Oct 17, 2007·Journal of the American Veterinary Medical Association·Maria Helena M BelleiPeter Physick-Sheard
Nov 30, 2005·Research in Veterinary Science·Heidrun GehlenPeter Stadler
May 12, 2018·Journal of Veterinary Internal Medicine·Rikke BuhlThomas Jespersen

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