In course of time there develops cardiac insufficiency with fibroid degeneration of the myocardium.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition."
Alexander Miles Alexis Thomson
It may appear in serious affections of the heart, as in febrile complaints, but it does not of itself add to the gravity of the condition, though I am not sure that when due to an acute infection of the heart, as in pneumonia and rheumatic fever, it may not be a sign of invasion of the myocardium by the diseased process.
"Psychotherapy"
James J. Walsh