Potassium Permanganate National Patient Safety Alert

A review of the National Reporting and Learning System over a two-year period identified that incidents of ingestion are still occurring. One report described an older patient dying from aspiration pneumonia and extensive laryngeal swelling after ingesting potassium permanganate tablets left by her bedside.

Supplied in concentrated forms, either as a ‘tablet’ or a solution, it requires dilution before it is used as a soak or in the bath. These concentrated forms resemble an oral tablet or juice drink and if ingested are highly toxic; causing rapid swelling and bleeding of the lips and tongue, gross oropharyngeal oedema, local tissue necrosis, stridor, and gastrointestinal ulceration. Ingestion can be fatal due to gastrointestinal haemorrhage, acute respiratory distress syndrome and/or multiorgan failure. Even dilute solutions can be toxic if swallowed.

Remember:

• Patients should not be on repeat prescriptions for potassium permanganate
• Prescriptions must include clear instructions to dilute before use
• Dispensing label must include the warning ‘HARMFUL IF SWALLOWED’

Patient Safety Alert