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رجوع لأسئلة Electrolytes (Na & K) 1 / 13
C-044 مطابق للمصدر جا في MED43 تكرر ×2

A 75-year-old female is admitted to the hospital with a change in mental status. The initial workup includes a chemistry profile that reveals a plasma potassium level of 7.1 mEg/L (N 3.5-Which of the following would you most likely see on her ECG?

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الإجابة: C. Tall peaked T-wave

✓ مطابق للمصدر RENAL-04 Potassium Disorders [Notes].pdf · p. 7

A potassium of 7.1 mEq/L is severe hyperkalaemia. The earliest ECG sign is tall peaked T waves, followed by PR prolongation, flattened P waves and a widened QRS.

  • U waves (with flat T and ST depression) are the sign of hypokalaemia.
  • AF and sinus tachycardia are not characteristic; hyperkalaemia tends to slow conduction and heart rate.
المصدر
RENAL-04 Potassium Disorders [Notes].pdf · p. 7
RENAL-04 Potassium Disorders [Notes].pdf · p. 6
المحاضرة
Electrolytes (Na & K) · Nephrology · Module C
ظهر في
MED43 ♂ Quiz C · MED43 ♀ Compre
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