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Warning-sign checks

High potassium: when to get help

Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.

  1. 1

    Is any of this happening now?

    Call 911

    Seek emergency help now if you have severe or rapidly worsening muscle weakness, difficulty breathing, fainting, collapse, or a new racing, pounding, very slow, or irregular heartbeat.

    Do not drive yourself if you feel faint or seriously unwell.

    Other emergency signs, for anyone
    • Someone who is struggling to breathe, gasping, choking, or cannot get words out
    • Someone who has chest pain, tightness or pressure lasting more than a few minutes
    • Someone who has sudden weakness or drooping on one side of the face or body, slurred speech, or sudden confusion
    • Someone who is unconscious, or cannot be woken
    • Someone who is bleeding heavily and it will not stop with firm pressure
    • Someone who has had a seizure that will not stop, or does not wake up afterwards
    • Someone who has lips or skin that look pale, blue, grey or blotchy
    • Someone who you believe has taken an overdose or swallowed something poisonous
  2. 2

    Is any of this happening?

    Be seen today

    Follow urgent instructions from a laboratory or healthcare service if you are told that your potassium is critically high.

    A dangerous level may cause no warning symptoms.

    Contact a healthcare professional promptly if you develop new weakness, tingling, nausea, or palpitations, especially if you have kidney disease, diabetes, heart failure, or take medicines that can raise potassium.

  3. 3

    Does any of this apply?

    Book an appointment

    Routine follow-up is appropriate for a mild, stable result when you have been given a clear plan for repeat testing and feel well.

    Make sure the repeat test happens when arranged.

    Do not stop prescribed heart, blood pressure, or kidney medicines on your own.

Every sign above is quoted from the sofidex article on High potassium. If you are not sure, err upward — it is always reasonable to be checked.