My husband has CHF, Coronary Artery Disease, Cardiomyopathy, ventricular tachycardia,emphysema, hypothyroidism, 3 blocked arteries that can not be repaired, ejection fraction was 25% when last checked and a AAA that was 5.2 before it was repaired with stents last year. He takes 15 different medications and uses 2 different inhalers. He is 67 years old and is normally fairly calm but recently he has started having mood swings and yelling at me. Is this a sign that things are going down hill ? and what's the best way to deal with the mood swings?