Tramadol-metoclopramide or remifentanil for patient-controlled analgesia during second trimester abortion: a double-blinded, randomized controlled trial.

Study Objective: To compare patient-controlled analgesia (PCA) with tramadol with PCA with remifentanil in second trimester abortion.

Design: Prospective, randomized double-blinded study

Setting: University-affiliated medical center.

Patients: 30 ASA physical status 1 and 2 patients undergoing a second trimester abortion.