Supine hypotension syndrome.
D005260:Female; D005315:Fetal Diseases / Q000209:etiology*; D005318:Fetal Heart; D006801:Humans; D007022:Hypotension / Q000150:complications*; D007744:Obstetric Labor Complications / Q000209:etiology*; D011187:Posture; D011247:Pregnancy