Please be aware that on page 271 of the print version, and the old Hypokalaemia page (now corrected) (Link) had a few annoying little errors.
ECG changes of hypokalaemia occur when the K+ is < 2.7mmo/L, not when it is >2.7mmol/L.
The ECG image was of hypokalaemia (as in the title) despite the text beneath stating it was of hyperkalaemia.
U waves are often mistaken as T waves.
Thanks to an attentive subscriber for pointing these out.
Please use the Contact us form (at the top of every page) to let us know about anything else you think might be wrong.