Guitar67,
Sorry to read of your loss.
Cardiomegaly means "big heart". It is a description of the heart's size. The significance of cardiomegaly varies from minimal when the heart is
minimallyMinimally invasive heart surgery enlargedEnlarged adenoids
Enlarged prostate to quite significant when the heart is quite
enlargedEnlarged adenoids
Enlarged prostate.
Many things can cause the heart to increase in size: genetic conditions like HOCM, viral illnesses, exercise, previous heart attacks, inflammation of the heart, heart attacks, drug
abuseAlcoholism
Chemical dependence - resources
Child abuse - physical
Child abuse - sexual
Child neglect and psychological abuse
Drug abuse
Drug abuse and dependence
Drug abuse first aid
Family troubles - resources
Laxative overdose
Signs of drug abuse, uncontrolled hypertension, and others.
It would be worth seeing your primary doctor to see if you have evidence of any heart disease, but chances are none will be found.
Again, sorry for your loss. Keep us informed if other questions arise.