TheShrew
Posts: 519
Joined: 2/15/2009 From: The state I live in? Confusion. Status: offline
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I know many of you have considerably more knowledge than I do, and could address the metabolization/meds issue better than I can. {And I'm too lazy to go dig out old books look any of this up.} quote:
ORIGINAL: Hippiekinkster quote:
ORIGINAL: TheShrew It depends on the med .. they can be filtered then excreted through the kidneys or liver It's impossible to answer many questions you're going to have without a lot more information. If her kidneys are crashing, he may have switched her to a med that can be processed through the liver. If her kidneys are completely shot, then she's looking at dialysis and potentially transplant. If she's an addict, drying her out isn't the first course of action.. stabilizing her condition is. If she has other 'serious' injuries, that could be the cause of her kidney failure or at least be a contributing factor. If not, the other injuries could be a factor in the Drs decision not to pull her meds. If she's on the edge of gone then the meds are to make her comfortable. I'm sorry, it's just impossible to give a solid answer. .. I've never seen this happen ~> police come and pick up those rxs when someone dies locally. ETA .. to remove medical terms & say I hope your friend gets better. I don't know of any opioids that are NOT metabo;ized via the liver enzymes (which are also found in the intestinal tract, which is why grapefruit juice (bergamottin) is contraindicated with certain meds). AFAIK, all but codeine and possibly methadone (I'd have to check) are metabolized via the CYP3a4 family of polypeptides. I just had a bout with Rifampin, which, being an inducer of CYP3a4 enzymes, caused me to metabolize my oxy faster than normal, which caused me to "overtake" them, which got me bitched at by my pain doc. ETA ... There are contraindications of certain drugs in relation to specific disease processes. Morphine is the prototype for all opioid drugs, and it's highly contraindicated in pts w/ renal impairment d/t the accumulation of a toxic metabolite. {Though I would have to go look up which metabolite} Demerol is another that holds the potential to induce a toxic state in pts w/ kidney disfunction d/t accumulation. And, as you probably already know, oxycodone is structurally r/t morphine so I assumed it may be avoided for the same reasons. {Although I 'd have to go and look this up, too.} When I typed that response I felt it was more clear in it's original incarnation. However, I edited to remove any medical terminology/information that sounded better suited for an exchange between healthcare workers. My goal in doing so was to avoid causing him any further confusion and additional questions. The gist of my reply was to let him know.. no one could give him a definitive answer based on limited knowledge. That being said, and my addressing you directly, I will say ... It seemed the concern of the OP was .. kidney failure/ still on pain pills/ why. He gently alluded to a pill addiction, serious injuries, smokes so badly he gagged outside her home, and is suddenly in renal failure. Unfortunately, my mind works like this ~> Renal failure + addiction/methadone-narcan, pain/codeine, cancer/morphine etc. But I don't want to say these things to him, so I crafted the most gentle, yet honest, response I could. I don't know of any opioids that are NOT metabo;ized via the liver enzymes <~ I tried to convey that "not all" drugs are metabolized/excreted solely via the kidneys. {Which seemed a concern to him.} I never said "no opioids are metabolized hepatically" because most are. Even then, there are variables such as age, specific disease process, comorbidities, poor metabolizer v. good metabolizer, race etc. which is why grapefruit juice (bergamottin) is contraindicated with certain meds). <~ True, many benzo's, statin's, antibio's etc AFAIK, all but codeine <~ When codeine is metabolized it breaks down into morphine and another component I cannot recall off the top of my head, but I'm fairly certain it occurs in the liver. {Either way, it's a danger for her because morphine is an issue in pt's w/ renal issues.} possibly methadone (I'd have to check) <~ If I recall correctly, the action of methadone is to bind to tissue of the brain and kidneys, though excretion happens via the liver, so it's actually alright as long as her liver is still good. are metabolized via the CYP3a4 family of polypeptides. <~ I can only congratulate you on committing this type of information to memory. I'm not going to lie .. I do well to remember the most common meds and associated data, pertinent lab values, protocols etc. that we use/see on a daily basis. Anything above/beyond/outside the norm we look up on a client to client basis. I just had a bout with Rifampin <~ Sorry to hear you that, but I hope you've recovered/are recovering well. ETA .. look up there ^
< Message edited by TheShrew -- 8/17/2011 12:52:54 AM >
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.. and those who were seen dancing were thought to be insane by those who could not hear the music .. Snark ~ Just another free service I generously provide.
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