Hey Hannah,
Sorry you are having problems and having to endure so many pokes. Bummer, especially considering you have a port.
I kinda think it's crap that you're inpatient and no one is looking into it. I guess for them it's just easier to poke you. You have a port for a reason, most likely because your veins suck and you're sick of pokes. Sorry, this is a personal frustration of mine. My nurses/docs used to always just want to do things peripherally instead of using my port like it was no big deal..
I would ask for them to TPA it, that should break up a clot, if that is the issue. If that doesn't do it, you'll need to have a catheter gram (they inject a dye and watch it on an xray) to see what's up with it. My went kaput last year (not flushing or getting a blood return) and the dye test showed that my catheter was broken almost completely off from the port itself. It was kind of a dangerous situation because if the catheter would have actually broken off it would have been free standing in my blood stream. UGH. They took it out under local anesthesia and it was no biggie. I don't have another one, yet.
Honestly, I'm not sure why they feel this is an issue for your CF doc. Any doc (resident/attending) can order the TPA and if that doesn't do the trick, a dye test. The TPA would be something quick and easy they could try yet tonight to try to save you a few pokes! I'd push for that. No reason they can't page the doc on call for orders.
I better run, but good luck to you and take care!!
Autumn 33 w.CF