Assertion: nitrous oxide | /r/HasAspect | a long-term effect
Facets:
value: on survival
type: TRANSITIVE-OBJECT
Source sentences:
text: Although perioperative myocardial ischemia is associated with an increase in long-term mortality, 140 no study has followed randomized patients receiving either nitrous oxide or nitrogen to determine whether nitrous oxide has a long-term effect on survival.