Oliveira, M.S. Muzzi, R.A.L. Araújo, R.B. Muzzi, L.A.L. Ferreira, D.F. Silva, E.F. Heart rate variability and arrhythmias evaluated eith holter in dogs with degenerative mitral valve disease Subjects--Topical Terms: CÃOARRITMIADOENÇA ANIMALELETROCARDIOGRAFIA