Type of cardiomyopathy |
Classification |
Underlying problem |
Specific cause |
Primary or Idiopathic |
Hypertrophic cd
Congestive (dilated) cd
Restrictive c
Intermediate or Intergrade cd |
Increased muscle mass
Dilation of the heart
Reduced stretch of heart muscle wall
Unable to determine type |
Unknown
Unknown
Unknown
Unknown |
Secondary |
Metabolic abnormalities |
Endocrine disorder |
Excess thyroid hormone (hyperthyroidism) cd
Excess growth hormone (acromegaly) c
Hyperadrenocorticism (Cushing's Disease) d
Phaeochromocytoma d
L-Carnitine deficiency d |
|
|
Nutritional |
Taurine deficiency c
Obesity c |
|
Infiltration of heart muscle |
|
Cancer cd
Leukaemia |
|
Fibroplastic change in heart muscle |
Endomyocardial fibrosis cd
Endocardial fibroelastosis cd |
Unknown
Unknown - genetic |
|
Physical agents |
High body temperature cd
Hypothermia cd |
|
|
Toxins |
Doxorubicin cd
Catecholamines cd
Lead cd
Ethanol cd
Cobalt d |
|
|
Inflammation of the heart muscle |
Infectious diseases |
Viral infection d
Bacterial infection cd
Protozoal infection cd
Fungal infection cd
Algal infection cd
Rickettsial infection d |
|
Genetically inherited disorders |
Endocardial fibroelastosis c |
|
|
Hypersensitivity d |
|
|
|
Other causes |
Ischaemia of the heart muscle cd
Conduction system disorders cd
Muscular dystrophy d |
|
The following is a list of suspected (but not proven) causes of cardiomyopathy in cats (c ) and dogs (d).