A 62-year-old man with end-stage kidney disease on hemodialysis presents with generalized weakness and palpitations after missing his scheduled dialysis session. Vital signs show BP 158/92 mmHg, HR 98 bpm, RR 20/min, temperature 37.2°C. Serum potassium is 7.2 mEq/L with normal serum calcium. Troponin is negative. Which of the following ECG changes is most likely to appear early in this condition?

  1. A)Prominent U waves
  2. B)Osborn waves
  3. C)Peaked T wavesGABARITO
  4. D)Delta waves
  5. E)Sawtooth flutter waves

Explicação

Hyperkalemia characteristically produces tall peaked T waves early, followed by PR prolongation, QRS widening, and eventually a sine-wave pattern as conduction deteriorates. End-stage kidney disease is a common setting for this progression. Ver explicação completa e trilha adaptativa →

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