Therapeutische Umschau. Revue thérapeutique
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Rare cases of high anion gap metabolic acidosis during long-term paracetamol administration in therapeutic doses with causative 5-oxoproline (pyroglutamic acid} accumulation have been reported. Other concomitant risk factors such as malnutrition, alcohol abuse, renal or hepatic dysfunction, comedication with flue/oxacillin, vigabatrin, netilmicin or sepsis have been described. ⋯ Causative substances should be stopped. 5-oxoproline concentrations in urine can be quantified to establish the diagnosis. Adverse drug reactions, which are not listed or insufficiently described in the respective Swiss product information, should be reported to the regional pharmacovigilance centres for early signal detection. 5-0 xoproline acidosis will be integrated as a potential adverse drug reaction in the Swiss product information for paracetamol.
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The effect of medication is always a balance between their beneficial effects and any adverse reactions they might elicit. The main risk for adverse drug events {ADEs) is polypharmacy, which is the simultaneous use of multiple drugs. This often applies to older patients, who suffer from multiple diseases and therefore take multiple medications. ⋯ Nevertheless, only 40-60% ofA DEs are recognized in the emergency department. This might be explained by the broad clinical symptoms, ranging from bleeding due to anticoagulants to the more nonspecific symptom of weakness due to hyponatraemia secondary to thiazide diuretics. Detecting and avoiding ADEs could be aided by using lists such as Beers criteria or STOPP/FART which list medications which are potentially inappropriate for older patients.