Assertion: nitrous oxide's effect | /r/HasSubevent | excessive hypotension
Facets:
Source sentences:
text: (it is recommended that high concentrations of halothane [3% or above] or other halogenated hydrocarbon anesthetics not be used when labetalol is used to produce controlled hypotension during surgery; possible additive effects may lead to excessive hypotension, large reduction in cardiac output, and increased central venous pressure)