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We all learn in medical school to give calcium in hyperkalemia for ‘membrane stabilization’. But what does ‘membrane stabilization’ actually mean? 🤷‍♀️ #iforgot #medschool #nephtwitter #tweetorial #physiology #pleasecareeventhoughstep1ispassfail
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Trick question - because there are 2 answers! But before we tackle hyperkalemia, check out this brief but brilliant refresher on action potentials in the heart.
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Now, hyperkalemia raises the resting membrane potential of cardiac myocytes, shifting them closer to the threshold for activation.

This should make the myocytes more irritable and easily activated - which it does... at first!
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