Ventricular tachycardia laboratory findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Laboratory Findings

• Ionized calcium levels along with magnesium and phosphate levels should be obtained.

• Hypocalcemia, hypokalemia, and hypomagnesemia make patients vulnerable to monomorphic VT or torsade de pointes.
• Diuretic usage can lead to hypokalemia which can provoke ventricular tachycardia.

• Cardiac troponin I and cardiac troponin T levels along with CK-MB and LDH can help access myocardial ischemia or infarction.

• Digoxin and tricyclic antidepressant blood levels should be ordered.

• Sometimes recreational drugs like cocaine, can result in ventricular tachycardia so a toxicology screen should also be obtained.