Ccrn exam 2024 newest - Study guides, Class notes & Summaries

An 18 year old is admitted with a history of syncopal episode at the mall and has a history of an eating disorder. The nurse notes a prolonged QT on the 12-lead EKG and anticipates a reduction in an electrolyte to be the cause. Which of the following is LEAST likely to cause this patient's problems? (A) sodium (B) magnesium (C) potassium (D) calcium - ANSWER- (A) Abnormal sodium does NOT cause QT prolongation. In contrast, a low magnesium, potassium, or calcium, may cause QT prolongatio...