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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.
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!
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!
