CARDIAC CAUSES
- Coronary artery disease
- Coronary atherosclerosis
- Developmental anomalies
- Coronary artery embolism
- Others
- Vasculitis
- Dissection
- Myocardial diseases
- Cardiomyopathies
- Myocarditis and other infiltrative processes
- Right ventricular dysplasia
- Valvular diseases
- Mitral valve prolapse
- Aortic stenosis and other forms of left ventricular outflow obstruction
- Endocarditis
- Conduction system abnormalities
NON-CARDIAC CAUSES
- Hemorrhage
- Intra cranial hemorrhage
- Diseases of the aorta
- G.I. bleeding
- Respiratory tract bleeding
- Intra-cranial causes other than hemorrhage
- Epilepsy
- Intracranial Tumors
- Meningitis
- Miscellaneous
- Primary Pulmonary Hypertension
- Bronchial Asthma
- Psychiatric
- Pulmonary thromboembolism
- Epiglottitis
- Senescence