How bad is coffee for someone in heart failure?

I am a carer. I go to a couple and the husband is in heart failure (Not just heart disease. His diagnosis specifies heart failure) He can move about slowly but is advised to lay down as much as possible and is very weak. I recently discovered that his wife takes him coffee at regular intervals throughout the day and when I asked her if she had not been advised to avoid stimulants she did not know what i was talking about. I did not want to persist without more knowledge myself. Should he avoid caffeine altogether?

Are you sure of the diagnosis? Most people with heart failure can breathe more easily sitting up.
Caffeine does increase the heart rate and also has a diuretic effect.
Whether he should have caffeine or avoid it is up to his doctor who should have given the patent’s wife advice.
Perhaps he is so ill that ‘anything for his comfort’ applies.

From the link…
All of the types of heart failure can result in similar symptoms, including the following:
Shortness of breath, especially with activity such as walking
Difficulty breathing when lying flat in the bed

Comments

Thank you, have now found evidence it is dangerous for people in heart failure and that it is good for people with same! Will leave him to enjoy his coffee. Thanks for your input.