Analgesic Efficacy of Duloxetine in Patients Undergoing Lumbar Discectomy

Assiut University

Status: Unknown

Conditions: Acute Pain

Treatments: Drug: placebo; Drug: Duloxetine

Study type: Interventional

Funder types: Other

Identifiers

NCT03549026

SECI-IRB-IORG0006563-535

Details and patient eligibility

About

Duloxetine is a serotonin-norepinephrine reuptake inhibitor primarily used for treatment of major depression and anxiety. Duloxetine also has been used in the treatment of chronic pain conditions, such as osteoarthritis and musculoskeletal pain. There are few studies examining its effect for acute pain. The objective of this study is to evaluate the analgesic effect of duloxetine for patients undergoing lumbar discectomy.

Enrollment: 70 estimated patients

Sex: All

Ages: 18 to 70 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Patients undergoing lumbar discectomy

Exclusion criteria

• Patients on regular opioid therapy
• Uncontrolled hypertensive patients
• Patients with ischemic heart disease

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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70 participants in 2 patient groups, including a placebo group

duloxitine group

Experimental group

Description:

Patients will receive single oral dose of duloxetine capsule, 60 mg, 2 hours before operation and will be anesthetized with general anesthesia that includes, Induction of anesthesia will be done by intravenous fentanyl, 2 µg / kg and propofol 1 - 2 mg / kg. Endotracheal intubation will be achieved by cis-atracurium, 0.15 mg / kg. Maintenance of anesthesia will be done by isoflurane and cis-atracurium, 0.03 mg / kg on demand. Additional intraoperative analgesia will be consisted of administration of intravenous boluses of fentanyl, 50 µg according to the attending anesthesiologist's decision. At the end of surgery, muscle relaxation was reversed using neostigmine 0.05 mg / kg and atropine 0.01 mg / kg.

Treatment:

Drug: Duloxetine

placebo group

Placebo Comparator group

Description:

Patients will receive single oral dose of placebo capsule, 2 hours before operation and will be anesthetized with general anesthesia that includes, Induction of anesthesia will be done by intravenous fentanyl, 2 µg / kg and propofol 1 - 2 mg / kg. Endotracheal intubation will be achieved by cis-atracurium, 0.15 mg / kg. Maintenance of anesthesia will be done by isoflurane and cis-atracurium, 0.03 mg / kg on demand. Additional intraoperative analgesia will be consisted of administration of intravenous boluses of fentanyl, 50 µg according to the attending anesthesiologist's decision. At the end of surgery, muscle relaxation was reversed using neostigmine 0.05 mg / kg and atropine 0.01 mg / kg.

Treatment:

Drug: placebo