I have been on prednisolone continuously for almost 15 years and apparently my natural 'cortosol' production is reduced. I've had multiple bypasses and it seems there is one artery virtually closed at the junction with the back of my heart. I developed asevere AF after my heart operation 9 years ago, and had RF Ablations because a pacemaker was not optimal (My immune system was/is consequently suppressed). I have finally been able to reduce prednisolone to 3 mg/day after several years of oscilating between 15-5 mg (with occasioinal bursts about 3/yr 50 mg for a period then reduced. For 5 years I have been able to walk 5-8 Km every day. QUESTION: I am getting occasional missing heart beat/palpitations... but find if I gently walk 5 Km, have a cup of coffee, then walk 2 Km to home I start to feel 'good' (heart regular, lungs clearer), but need a sleep later. QUESTION... ought I continue with the gradual reduction of prednisolone? Has the prednisolone been assisting with coping with the remaining blocked artery?