<prompt> Use of magnesium sulfate in pregnancy are ssociated with all of the following side-effects except: March 2010Muscular paralysisBradycardiaCardiac arryhthmiasRespiratory depression  <response>: Ans. B: Bradycardia Magnesium sulfate MgSO4 is commonly used as an anticonvulsant for toxemia and as a tocolytic agent for premature labor during the last half of pregnancy. Toxicity of IV magnesium sulfate includes cardiac arrhythmias, muscular paralysis, respiratory depression and CNS depression in mother as well as the neonate. 