Had Ventricular Failure, Hypersensitive Heart, Aortic Stenosis, Mood Swings, Aggressive. Is This A Typical Behaviour?

Hi my father died on Saturday, very unexpectedly from ventricular failure and hypertensive heart disease/aortic stenosis. He had kept the illness from his family, but even though he was 75, he could do the work of a 20 year old man, including the day before he died.

For a couple of years, his moods had altered and he became very prone to terrible mood swings, being down and not being able to work things out properly. However, if we criticised anything he did, he would go mad and become very aggressive.

Is this typical behaviour of someone with this condition, as my father has left us with more questions than answers?

Thanks

Helen