Grandjean H, de Mouzon J, Cabot J A, Desprats R, Pontonnier G
Arch Fr Pediatr. 1979 Nov;36(9 Suppl):LXXV-LXXXI.
The perinatal effects of phenoperidine and of epidural anaesthesia were studied in a randomised trial in which only normal patients were studied. Foetal heart rate curves, pH, pCO2 and neonatal clinical behaviour demonstrated that both kinds of analgesia had no harmful effects.