Hi there. I understand your concern for your dad. This severe headache episodes associated with photophobia and phonophobia, nausea could be migraine, un ruptured or just before rupture.
It is usually a larger aneurysm that is steadily growing which may press on the tissues and nerves and cause symptoms like pain above and behind the eye, numbness weakness on one side of the face, vision changes. When it hemorrhages, a person may experience sudden and severe headache, nausea, vomiting, stiff neck, usually the worst headache of life. The CT scan showing blood in the ventricle could be a ruptured aneurysm, hence the doctors want to do an angiogram.
The migraine headache is a possibility if the aneurysm is ruled out.
The delusions could be part of delusional disorder like bipolar disease or schizophrenia. Resurgence of panic attack is a possibility.
Wait and watch for the doctors’ to comment after the angiogram. Keep the good faith in the meanwhile.
Well, if they meant the left vetricle of the brain (and not the heart), then he had a bleed in his brain, where one of the blood vessels will burst, and it will cause his symptoms. The angiogram is a type of X-ray where they can see how well the blood is circulating in various parts of the body. See, a bleed like his comes from an aneurysm, whch is where a vessel will clog up and swell, until it reaches its breaking point. Also, the docs will probably do some repeat head scans to watch how that bleed is doing, whether the collection of blood is getting too large.
You may recall hearing about Brett Michaels, the rock star from the 1980s band Poison, he had an aneurysm that burst, spent some time in the hospital, and other than slight loss of function on one side, he is pretty much back up to speed and doing concerts again. He was pretty fortunate...others don't do very well, so you should indeed be concerned. Look, this is your father, can you please get a babysitter to watch your kids for 24 hours, so you can go to where he is and find out more about his condition, plus you can see him. Then you can return to your children and feel more comfortable about what is going on.
If it's your cell phone making static, you can try using the regular land line phone. I hope things progress in a positive way for your father. Let us know.