Results: The cases had more severe preeclampsia and a longer magnesium sulfate infusion. However,
cases had no excess of neuromuscular weakness (53.1%) versus control subjects who received
antihypertensive medication (53.1%; P = .99) or control subjects who received no antihypertensive
medication (44.8%;P = .13) or other serious magnesium-related effects. Cases versus control subjects
who received antihypertensive medication had less neuromuscular blockade (odds ratio, 0.04; 95% CI,
0.002-0.80). Cases versus control subjects who received no antihypertensive medication had less
maternal hypotension (41.4% vs 53.0%; P = .04)