How to write the cause of death for a 98-year-old man?

1, check the physical condition of the elderly and infer the cause of death.

2, according to the old man's inspection results, fill in the true. Generally speaking, the common causes of sudden death in elderly patients are primary organic heart diseases, mainly dilated cardiomyopathy, hypertrophic cardiomyopathy and hereditary ion channel diseases. In addition, coronary heart disease and acute myocardial infarction account for a large part of the causes of sudden death in the elderly.