title: Obstetric analgesia. Pentazocine and meperidine in normal primiparous labor.
mesh_terms: D000328:Adult; D000773:Anesthesia, Obstetrical; D001034:Apgar Score; D005260:Female; D005333:Fetus / Q000187:drug effects*; D006801:Humans; D007743:Labor, Obstetric / Q000187:drug effects*; D008012:Lidocaine; D008614:Meperidine / Q000009:adverse effects*; D010298:Parity; D010423:Pentazocine / Q000009:adverse effects*; D011247:Pregnancy
chemical_list: D008012:Lidocaine; D008614:Meperidine; D010423:Pentazocine