In this VETgirl online veterinary continuing education video, we demonstrate what hyperkalemia looks like on an ECG (or EKG). This was a cat presenting with signs of illness including vomiting, lethargy, and decreased appetite. He was also reported to be hiding for 24 hours and was diagnosed with a feline urethral obstruction (FUO) on physical exam. If you notice the ECG, you can see the "classic" appearance of hyperkalemia.
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