02 - cardiac disorders

Question 1

1. what is the most common valvular condition resulting in poor athletic performance in horses?

Answer 1

1. mitral regurgitation

Question 2

(mitral regurg)

1. most common vlave disorder resulting in poor athletic performance in horses?
2. up to what grade unlikely to be assoc with poor performance?
3. tachycardia and pathological arrhythmias may be present if vol overload results from valvular incompetence - esp what kind of arrythmia?
4. best method to assess severity of grade 3/4 murmurs?

Answer 2

2. grade 2/6

(grade 3 and up should be checked out)

3. atrial fib
4. ECG

Question 3

(aortic insuff)

1. do horses with this perform normally?
2. how loud can murmur be and wtill have normal exercise tolerance?

Answer 3

1. yes
2. up to grade 5 or 6

Question 4

(tricuspid regurg)

1. a cause of poor performance?

Answer 4

1. no - its an incidental finding

Question 5

1. what is the most common arrythmia to cause poor athletic performance?

Answer 5

1. atrial fib

Question 6

(atrial fib)

1. treatment usually required for recovery to normal perforamce levels (if no underlying heart dz)

2.

Question 7

(myocarditis)

1. this may be suspected if what are detected?
2. investigation should include what?

Answer 7

1. arrhythmias
2. ecg