Magnesium sulfate is contraindicated in patients who have:
a. Seizures due to eclampsia
b. Multifocal ventricular tachycardia (torsades des points)
c. High-grade heart block (Third Degree)
d. Preterm labor
c
Rationale: a. MS is indicated in seizures due to eclampsia.
b. MS is indicated in torsades des pointes.
c. Correct. MS is contraindicated in high-grade heart blocks.
d. MS is indicated in preterm labor due to its smooth muscle relaxation.
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