can you help me how remember electrocardiographic changes in electrolyte imbalance?
Quote from december2905
hi! hope this will help you...
first, think of the normal ecg first...i made a poster that's really big and put it in my wall so i can see it always...
think how it starts and end...so it starts with p followed by q r s t
so let's start from where it begins...
p flat hyperkalemia
pr prolonged hyperkalemia hypermagnesemia
qrs widened hyperkalemia hypermagnesemia
qt prolonged hypocalcemia
st prolonged hypocacemia
st shortened hypercalcemia
st depressed hypokalemia hypomagnesemia
t widened hypercalcemia
t tall hyperkalemia hypomagnesemia
t inverted hypokalemia
u prominent hypokalemia
this was excellent. many thanks.
however, i'm still struggling with trying to understand why a certain electrolyte imbalance would cause the changes that it does. can someone provide an actual explanation of why the ecg changes happen? for example, since qrs represents ventricular depolarization, why would potassium excess cause a widened qrs?
Last edit by sandtiger on Sep 23, '08