title: Alteration of fetal heart rate caused by extrauterine environmental changes.
mesh_terms: D000109:Acetylcholine / Q000008:administration & dosage / Q000494:pharmacology*; D000818:Animals; D001794:Blood Pressure / Q000187:drug effects; D005260:Female; D005318:Fetal Heart / Q000187:drug effects*; D006339:Heart Rate / Q000187:drug effects*; D007545:Isoproterenol / Q000008:administration & dosage / Q000494:pharmacology*; D009638:Norepinephrine / Q000008:administration & dosage / Q000494:pharmacology*; D011247:Pregnancy; D051381:Rats
chemical_list: D007545:Isoproterenol; D000109:Acetylcholine; D009638:Norepinephrine