This thesis does not purport to bring to
light any startling new theories or indeed any
new matter at all. It endeavours to examine all
heart conditions from the standpoint of the heart
muscle and it aims at emphasising the great
importance of the myocardium in cardiac disease.
Modern research has shown conclusively that
whatever kind of heart-lesion may be present,
the real factor of importance is the state of the
heart muscle. A healthy myocardium can compensate
for every defect.
The actual condition of the heart muscle is
the one guide to treatment and the only sure
index in prognosis.