Hi, thanks for using health care magic
Congestive heart failure
is associated with fatigue
because the heart is unable to fulfil the needs of the body and the reduced oxygen
to the tissues results in fatigue. So his age combined with the fatigue of heart failure would result in excessive sleepiness.
The atrophied muscles would also be related to age as well as his condition.As persons age they tend not to be as active,as a result the muscle undergo atrophy
.If reduced oxygenation is added to this then the process is speed up.
I hope this helps