Study on Efficacy of iv PCA With Fentanyl or Sufentanil in Patients Undergoing Laparoscopic Nephrectomy
Study on Efficacy of iv PCA With Fentanyl or Sufentanil in Patients Undergoing Laparoscopic Nephrectomy
The purpose of this study is to compare the efficacy of iv PCA with fentanyl or sufentanil in
 patients undergoing laparoscopic nephrectomy
Inclusion Criteria:

 1. patients undergoing laparoscopic or robot-assisted laparoscopic nephrectomy (total or
 partial)

 2. patient who want intravenous PCA for postoperative pain control

 Exclusion Criteria:

 1. long-term use of opioid, pain reliever or tranquilizers

 2. a history of DM neuritis

 3. prolonged prothrombin time or activated partial thromboplastin time

 4. impairment of cognitive function

 5. obesity (BMI ≥ BMI 30 kg/m2)