There has been concern about degenerative mitral valve disease and pulmonic stenosis in the breed but these diseases have not definitely been demonstrated as prevalent in the breed. A canine development day has been run by CSAG for whippets.
Current recommendations:
Auscultation is the basis of heart screening but all dogs with murmurs should have echocardiography.
Early onset, significant mitral regurgitation should be concerning & dogs with congenital heart disease should not be bred from.