Thank you for posting your query.
I have noted your father's symptoms.
are suggestive of vascular headaches, probably related to fluctuation in he blood flow to brain in sitting and lying down positions. The main treatment is required to make the heart better.
He has a poor cardiac function. Dobutamine
infusion may help improve th heart function.
If medicines do not help, heart transplant surgery
is a good option.
For headache, he can take ibuprofen tablets.
I hope it helps.
Dr Sudhir Kumar MD DM (neurology)
Senior Consultant Neurologist