What EKG changes are seen in patients with hyperkalemia?
• Early, peaked T waves, initially in precordial and then in all leads
• Followed by increased PR interval and QRS complex widening
• This is followed by progressive flattening and then disappearance of P waves.
• Merging of the widened QRS and peaked T waves leads to a sine-wave pattern.
• This may be followed by ventricular fibrillation.