NCT03428230

Intrathecal Paracetamol Before Spinal Anaesthesia With Chloroprocaine HCl 1% for Short Knee Procedures

Dose-finding Study of Intrathecal Paracetamol Administered Immediately Before Spinal Anaesthesia With Chloroprocaine HCl 1% for Elective Knee Procedures of Short Duration

• Status: Completed
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 60 (actual)
• Sponsor: Sintetica SA · Industry
• Sex: All
• Age: 18 Years – 80 Years
• Healthy volunteers: Not accepted

Summary

This is a phase II, single centre, randomised, parallel-group, double-blind, three doses, placebo-controlled, exploratory efficacy and safety study. The objective of this study is to investigate the efficacy and safety of a single intrathecal injection of Paracetamol 3% (30 mg/mL) administered at 3 doses to 3 active treatment groups, as compared to placebo, for post-operative analgesia in knee procedures up to 40 min duration performed under spinal anaesthesia with Chloroprocaine HCl 1%.

Detailed description

Eligible patients undergoing elective short-duration knee procedures up to 40 min duration will be randomised into 4 treatment groups (15 patients per group) to receive either one of the 3 single doses of Paracetamol 3% (D1: 30 mg, D2: 60 mg, D3: 90 mg) or the placebo solution (P: 0.9% saline solution) by intrathecal injection (IT), according to the randomised, parallel-group design. Immediately after IT paracetamol or placebo administration, all patients will receive a single IT dose of Chloroprocaine HCl 1% (Non-investigational medicinal product, NIMP) according to the Summary of Product Characteristics indications. The time interval between paracetamol IT and chloroprocaine IT injections should not exceed 2 min. The study will include a screening phase (Visit 1, Day -21/-1), a treatment phase (IMP IT administration, anaesthesia and surgical procedure: Visit 2, Day 1) and a follow-up phase including an observation period (Visit 3), a final visit and two follow-ups (24 h post-dose and day 7±1).

Conditions

• Pain, Postoperative

Interventions

Type	Name	Description
DRUG	30 mg Paracetamol 3% (1 mL)	Single administration by intrathecal injection just before spinal anaesthesia. The injection will be performed according to the hospital procedures. For the intrathecal injection of Paracetamol followed by the intrathecal injection of the anaesthetic, two needles will be used: one introducer needle, which will serve to introduce the second needle through the skin, plus one intrathecal Pencil point needle (27-G or 25-Gauge or Reganesth or Nizell needle) to which the first syringe containing Paracetamol will be attached first, followed by the second syringe with the anaesthetic. In this way only one intrathecal puncture will be performed. Lumbar puncture will be done according to the standard hospital procedures.
DRUG	60 mg Paracetamol 3% (2 mL)	Single administration by intrathecal injection just before spinal anaesthesia. The injections will be performed according to the hospital procedures. For the intrathecal injection of Paracetamol followed by the intrathecal injection of the anaesthetic, two needles will be used: one introducer needle, which will serve to introduce the second needle through the skin, plus one intrathecal Pencil point needle (27-G or 25-Gauge or Reganesth or Nizell needle) to which the first syringe containing Paracetamol will be attached first, followed by the second syringe with the anaesthetic. In this way only one intrathecal puncture will be performed. Lumbar puncture will be done according to the standard hospital procedures.
DRUG	90 mg Paracetamol 3% (3 mL)	Single administration by intrathecal injection just before spinal anaesthesia. The injections will be performed according to the hospital procedures. For the intrathecal injection of Paracetamol followed by the intrathecal injection of the anaesthetic, two needles will be used: one introducer needle, which will serve to introduce the second needle through the skin, plus one intrathecal Pencil point needle (27-G or 25-Gauge or Reganesth or Nizell needle) to which the first syringe containing Paracetamol will be attached first, followed by the second syringe with the anaesthetic. In this way only one intrathecal puncture will be performed. Lumbar puncture will be done according to the standard hospital procedures.
DRUG	Placebo, 0.9% saline solution	Single administration by intrathecal injection just before spinal anaesthesia. The injections will be performed according to the hospital procedures. For the intrathecal injection of Placebo followed by the intrathecal injection of the anaesthetic, two needles will be used: one introducer needle, which will serve to introduce the second needle through the skin, plus one intrathecal Pencil point needle (27-G or 25-Gauge or Reganesth or Nizell needle) to which the first syringe containing Placebo will be attached first, followed by the second syringe with the anaesthetic. In this way only one intrathecal puncture will be performed. Lumbar puncture will be done according to the standard hospital procedures.
DRUG	NIMP: Chloroprocaine HCl 1% (10 mg/mL), solution for injection	Immediately after intrathecal administration of the Paracetamol dose or Placebo, all patients will receive a single intrathecal dose of Chloroprocaine HCl 1% according to the Summary of Product Characteristics indications. Time interval between the 2 administrations should not exceed 2 min.

Timeline

• Start date: 2018-08-06
• Primary completion: 2019-10-22
• Completion: 2019-10-22
• First posted: 2018-02-09
• Last updated: 2021-06-24
• Results posted: 2021-06-24

Locations

1 site across 1 country: Switzerland