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Maj 2023
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13 Maj 2023 - 08:15
Tylenol od antidote
Allmänt
With toxic ingestion, this system gets over-run.
NAPQI usually combines with glutathione and gets excreted (renal).
N-acetyl-P-Aminophenol (aka Tylenol) gets oxidised via CYP2E1 to N-acetyl- p-benzoquinone imine NAPQI.
Describe the metabolism of acetaminophen
other hepatic toxicities (eg, valproic acid, isoniazid, statins, herbal medications, vinyl chloride, and polychlorinated biphenyls).
cyclopeptide-containing mushroom toxicity (eg Amanita Phalloides).
In patients with elevated Liver enzymes / abnormal liver function and with or without Renal failure, think:.
Don’t forget about the differential diagnosis!.
Give the antidote = NAC when appropriate.
But with APAP overdoses there are 3 goals:.
As with all tox, don’t forget the basics (see episode 147).
18% of all unexplained liver failure ends up being attributed to APAP overdose.
The issue is its relatively a silent clinical syndrome until overt hepatocellular toxicity has ensued!.
It’s hard to find a house these days that doesn’t have a bottle or two around.
Acetaminophen (aka paracetamol aka APAP) is ubiquitous.
Om Mig: