Gibson, that's a sad and painful story you posted, I feel for your father and for you and your family. Sounds like he's really in a bad way.
As the owner of 14 catheters so far, things that can still cause bleeding for me, is excessive walking, mopping floors, mowing the yard with a walk behind self propelled lawn mower, things of physical stress like that. Also, when I have had these corrective surgeries for strictures and blockages, I sometimes will bleed and clear debris and mini clots for days.
With your father's more serious cancer status, what the doctor said about the source of bleeding sounds very believable. His doctor can give you a color chart, or even a nurse, that shows your the relative color changes when blood is mixed into a catheter. A little bit of blood can look frightening when mixed with urine. Though, I have had bags that were pure red fresh blood, and those freaked even me out. I have gotten use to the different shades of pink and red they grade by. For the most part, its not dangerous, just creepy.
On the pain management side, if his dr is keeping him on morphine, then his pain level and quality must be pretty high, the other drugs are a step down in managing severe pain, not stronger. There are synthetic morphine based pain meds too, but they are usually only administered in a direct hospital setting, or in a hospice setting. Don't have the name of the drug handy, but one of them was one of the drugs that helped kill Michael Jackson. I was on it for my first 2 days in the hospital after open surgery, and I will testify, it puts you in a total pain free state and a mind set of total and absolute bliss.
I ended salvage radiation recently, and due to swelling and my history of blockages, they installed the SP (suprapubic) catheter in me prior to starting the radiation, knowing that the radiation would cause further swelling. Might be something to mention to his doctor too before beginning the radiation and chemo, be one less thing for you and him to worry about.
Hoping for the best
David in SC
Age: 57, 56 dx, PSA: 7/07 5.8, 7/08 12.3, 9/08 14.5, 10/08 16.3
3rd Biopsy: 9/08 - 7/7 Positive, 40-90% Cancer, Gleason 4+3
Open RP: 11/08, Rht nerves saved, 4 days in hospt, on catheters for 63 days, 5th one out 1/09
Path Rpt: Gleason 3+4, pT2c, 42g, 20% cancer, 1 pos margin
Incontinence: 1 Month ED: Non issue at any point post surgery, no problem post SRT
Post Surgery PSA: 2/09 .05,5/09 .1, 6/09 .11. 8/09 .16
Post SRT PSA: 1/10 .12
Latest: 7/9 met 2 rad. oncl, 7/9 cath #6 - blockage, 8/9 2nd corr surgery, 8/9 cath #7 out 38 days, 9/9 - met 3rd rad. oncl., mapped 9/9, 10/1 - 3rd corr. surgery - SP cath/hard dialation, 10/5 - 11/27 IMRT SRT 39 sess/72 gys ,cath #8 33 days, Cath #9 35 days, 12/7 - Cath #10 43 days, 1/19 - Corr Surgery #4, Caths #11 and #12 same time, 2/8-Cath #11 out - 21 days, 3/2- Cath #12 out - 41 days, 3/2- Corr Surgery #5, Caths #13 & #14 same time, 3/6 Cath #13 out - 4 days