Arthroplasty Clinical Trial
Official title:
The Efficacy and Optimal Dose of Sufentanil in Patient Controlled Analgesia After Moderate Surgery
Effective postoperative pain control is essential for patients and inadequate postoperative pain relief can cause mental and psychological sufferings. Despite the growing concern on postoperative pain management, acute postoperative pain is still poorly managed. Though numerous clinical practice guidelines for postoperative pain management have been published throughout the last decades, inadequate pain relief remain a big health care issue. Sufentanil has been used as satisfied pain control drug because of its strong potency of analgesia for a long while. But its use in patient controlled intravenous analgesia (PCIA) has not been clarified. And the dilemma of safety concern and insufficient dosage of analgesic is a common problem. Thus the investigators design this prospective randomized controlled double blinded trial to observe the efficacy and the optimal dose of sufentanil in PCIA in patients underwent moderate surgery for the purpose of providing reference in clinical practice.
Objective To explore the efficacy and the optimal dose of sufentanil in PCIA in patients
underwent moderate surgery for the purpose of providing reference in clinical practice.
Methods 60 patients aging from 20 to 75,BMI 18 to 28 kg/m2,American Society of
Anesthesiologists (ASA) grade I to II, anticipated surgery duration within 4 hrs and agreed
to sign consent paper were scheduled for selective moderate surgery(including abdominal
surgery and arthroplasty). Exclusive criteria: severe respiratory, cardiovascular or
neurological disease, hepatic or renal dysfunction, psychiatric history or with unstable
mental state, drug addiction or dependence. All patients were randomly assigned into 3
groups, S1 received 1.5 ug/kg sufentanil in PCIA, S2 received 2.0 ug/kg sufentanil, S3
received 2.5 ug/kg sufentanil. All patients received general anesthesia which was induced
with midazolam 2mg, sufentanil 0.5ug/kg, propofol 2mg/kg, cisatracurium 0.2mg/kg and was
maintained with continuous infusion of propofol, remifentanil and cisatracurium to maintain
bispectral index (BIS) value between 40 and 60. Monitoring of MAP, heart rate (HR), pulse
oxymetry (SpO2%), End-tidal CO2 (ETCO2), blood loss, and transfusion were recorded during
anesthesia.
After patient waked, a loading dose of 10 ug sufentanil was given per time according to the
patients' pain level and the loading dose was repeated till the pain relived or the RR was
less than 10 times per min. Then the patient-controlled analgesia (PCA) pump was attached,
and the continuous infusion speed was set at 2 ml/h. The pump was set to give an amount of
0.5ml at each press with a lockout interval of 10min. Patient was observed in the PACU for at
least 30 min until the discharge criteria was reached. All the patients were followed-up at
2h, 6h, 24h and 48 h after the surgery. Clinical evaluations included MAP, HR, respiratory
rate (RR), SpO2%, total pressing times, total amount of sufentanil, additional analgesic
requirement, VAS, numerical rating scale (NRS) and Ramsey sedation scale were recorded. Side
effects include nausea and vomiting, urinary retention, pruritus, respiratory depression were
also recorded. Overall satisfaction index were inquired as well.
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