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Perineural Dexamethasone in Femural Nerve Block After Ligament Reconstruction

Registration Number
NCT02749162
Lead Sponsor
Foisor Orthopedics Clinical Hospital
Brief Summary

The effect of perineural dexamethasone administered as an adjuvant in prolonging the duration of analgesia continues to be under debate. The investigators performed a prospective randomized study to evaluate the effect of perineural dexamethasone in different concentrations in postoperative analgesia in femoral nerve block for anterior cruciate ligament reconstruction.

Detailed Description

After Ethics committee approval, 75 patients American Society of Anesthesiologists score (ASA) I-III were randomized at the end of surgery into 3 groups of 25 patients each who underwent femoral nerve block: group A with 20 ml ropivacaine 0,5% and 20 ml lidocaine 1%; group B with 20 ml ropivacaine 0,5%, 20 ml lidocaine 1% and 4 mg dexamethasone; group C with 20 ml ropivacaine 0,5%, 20 ml lidocaine 1% and 8 mg dexamethasone.

All groups received postoperative analgesia when visual analog scale (VAS) over 3 (by request), with IV Perfalgan 1 g and morphine (loading dose 0.1 mg/kg and titration until VAS under 3, followed by subcutaneous (SC) administration of 1/2 of total loading dose on demand for the following 24 hours (h) .

Efficacy was evaluated by the time interval from performing the block until the first analgesic dose required, the total amount of morphine in the first 24 h postoperative, the patient satisfaction and the neurological side effects.

Recruitment & Eligibility

Status
COMPLETED
Sex
All
Target Recruitment
90
Inclusion Criteria
  • ASA I-III
  • BMI<40
Exclusion Criteria
  • High risk grade hypertension
  • Chronic renal failure
  • Known allergy to drugs used
  • Chronic treatment with steroids
  • Drugs dependency
  • History of diabetes mellitus
  • Ulcer or chronic gastritis
  • Infection on the puncture site
  • Neuropathy at the surgical level
  • Coagulopathy
  • Requesting another type of anesthesia
  • Fear to sign informed consent
  • By-pass aorto-femoral

Study & Design

Study Type
INTERVENTIONAL
Study Design
PARALLEL
Arm && Interventions
GroupInterventionDescription
Group BParacetamolAfter the spinal anesthesia regressed, the investigators performed a single shot femural block with ropivacaine 0,5% 200 mg + lidocaine 1% 200 mg and 4 mg dexamethasone phosphate. After the block regression, at the first analgetic request the patients received the analgesia protocol was started for 24 h with paracetamol 1 g IV every 8 h and lornoxicam 8 mg PO every 12 h; if VAS was still over 3 after 30 min, morphine was given as a loading bolus of 0.1 mg/kg IV supplemented with 2 mg IV every 5 minutes until VAS \<3. After 2 h morphine was administered SC ½ of the total loading dose at request.
Group CRopivacaineAfter the spinal anesthesia regressed, the investigators performed a single shot femural block with ropivacaine 0,5% 200 mg+ lidocaine 1% 200 mg and 8 mg dexamethasone phosphate.After the block regression, at the first analgetic request the patients received the analgesia protocol was started for 24 h with paracetamol 1 g IV every 8 h and lornoxicam 8 mg PO every 12 h; if VAS was still over 3 after 30 min, morphine was given as a loading bolus of 0.1 mg/kg IV supplemented with 2 mg IV every 5 minutes until VAS \<3. After 2 h morphine was administered SC ½ of the total loading dose at request.
Group AParacetamolAfter the spinal anesthesia regressed, the investigators performed a single shot femoral block with ropivacaine 0,5% 200 mg + lidocaine 1% 200 mg. After the block regression, at the first analgetic request the patients received the analgesia protocol was started for 24 h with paracetamol 1 g IV every 8 h and lornoxicam 8 mg PO every 12 h; if VAS was still over 3 after 30 min, morphine was given as a loading bolus of 0.1 mg/kg IV supplemented with 2 mg IV every 5 minutes until VAS \<3. After 2 h morphine was administered SC ½ of the total loading dose at request.
Group AMorphineAfter the spinal anesthesia regressed, the investigators performed a single shot femoral block with ropivacaine 0,5% 200 mg + lidocaine 1% 200 mg. After the block regression, at the first analgetic request the patients received the analgesia protocol was started for 24 h with paracetamol 1 g IV every 8 h and lornoxicam 8 mg PO every 12 h; if VAS was still over 3 after 30 min, morphine was given as a loading bolus of 0.1 mg/kg IV supplemented with 2 mg IV every 5 minutes until VAS \<3. After 2 h morphine was administered SC ½ of the total loading dose at request.
Group ARopivacaineAfter the spinal anesthesia regressed, the investigators performed a single shot femoral block with ropivacaine 0,5% 200 mg + lidocaine 1% 200 mg. After the block regression, at the first analgetic request the patients received the analgesia protocol was started for 24 h with paracetamol 1 g IV every 8 h and lornoxicam 8 mg PO every 12 h; if VAS was still over 3 after 30 min, morphine was given as a loading bolus of 0.1 mg/kg IV supplemented with 2 mg IV every 5 minutes until VAS \<3. After 2 h morphine was administered SC ½ of the total loading dose at request.
Group ALidocaineAfter the spinal anesthesia regressed, the investigators performed a single shot femoral block with ropivacaine 0,5% 200 mg + lidocaine 1% 200 mg. After the block regression, at the first analgetic request the patients received the analgesia protocol was started for 24 h with paracetamol 1 g IV every 8 h and lornoxicam 8 mg PO every 12 h; if VAS was still over 3 after 30 min, morphine was given as a loading bolus of 0.1 mg/kg IV supplemented with 2 mg IV every 5 minutes until VAS \<3. After 2 h morphine was administered SC ½ of the total loading dose at request.
Group BDexamethasone phosphateAfter the spinal anesthesia regressed, the investigators performed a single shot femural block with ropivacaine 0,5% 200 mg + lidocaine 1% 200 mg and 4 mg dexamethasone phosphate. After the block regression, at the first analgetic request the patients received the analgesia protocol was started for 24 h with paracetamol 1 g IV every 8 h and lornoxicam 8 mg PO every 12 h; if VAS was still over 3 after 30 min, morphine was given as a loading bolus of 0.1 mg/kg IV supplemented with 2 mg IV every 5 minutes until VAS \<3. After 2 h morphine was administered SC ½ of the total loading dose at request.
Group BMorphineAfter the spinal anesthesia regressed, the investigators performed a single shot femural block with ropivacaine 0,5% 200 mg + lidocaine 1% 200 mg and 4 mg dexamethasone phosphate. After the block regression, at the first analgetic request the patients received the analgesia protocol was started for 24 h with paracetamol 1 g IV every 8 h and lornoxicam 8 mg PO every 12 h; if VAS was still over 3 after 30 min, morphine was given as a loading bolus of 0.1 mg/kg IV supplemented with 2 mg IV every 5 minutes until VAS \<3. After 2 h morphine was administered SC ½ of the total loading dose at request.
Group CDexamethasone phosphateAfter the spinal anesthesia regressed, the investigators performed a single shot femural block with ropivacaine 0,5% 200 mg+ lidocaine 1% 200 mg and 8 mg dexamethasone phosphate.After the block regression, at the first analgetic request the patients received the analgesia protocol was started for 24 h with paracetamol 1 g IV every 8 h and lornoxicam 8 mg PO every 12 h; if VAS was still over 3 after 30 min, morphine was given as a loading bolus of 0.1 mg/kg IV supplemented with 2 mg IV every 5 minutes until VAS \<3. After 2 h morphine was administered SC ½ of the total loading dose at request.
Group BLidocaineAfter the spinal anesthesia regressed, the investigators performed a single shot femural block with ropivacaine 0,5% 200 mg + lidocaine 1% 200 mg and 4 mg dexamethasone phosphate. After the block regression, at the first analgetic request the patients received the analgesia protocol was started for 24 h with paracetamol 1 g IV every 8 h and lornoxicam 8 mg PO every 12 h; if VAS was still over 3 after 30 min, morphine was given as a loading bolus of 0.1 mg/kg IV supplemented with 2 mg IV every 5 minutes until VAS \<3. After 2 h morphine was administered SC ½ of the total loading dose at request.
Group BRopivacaineAfter the spinal anesthesia regressed, the investigators performed a single shot femural block with ropivacaine 0,5% 200 mg + lidocaine 1% 200 mg and 4 mg dexamethasone phosphate. After the block regression, at the first analgetic request the patients received the analgesia protocol was started for 24 h with paracetamol 1 g IV every 8 h and lornoxicam 8 mg PO every 12 h; if VAS was still over 3 after 30 min, morphine was given as a loading bolus of 0.1 mg/kg IV supplemented with 2 mg IV every 5 minutes until VAS \<3. After 2 h morphine was administered SC ½ of the total loading dose at request.
Group CParacetamolAfter the spinal anesthesia regressed, the investigators performed a single shot femural block with ropivacaine 0,5% 200 mg+ lidocaine 1% 200 mg and 8 mg dexamethasone phosphate.After the block regression, at the first analgetic request the patients received the analgesia protocol was started for 24 h with paracetamol 1 g IV every 8 h and lornoxicam 8 mg PO every 12 h; if VAS was still over 3 after 30 min, morphine was given as a loading bolus of 0.1 mg/kg IV supplemented with 2 mg IV every 5 minutes until VAS \<3. After 2 h morphine was administered SC ½ of the total loading dose at request.
Group CMorphineAfter the spinal anesthesia regressed, the investigators performed a single shot femural block with ropivacaine 0,5% 200 mg+ lidocaine 1% 200 mg and 8 mg dexamethasone phosphate.After the block regression, at the first analgetic request the patients received the analgesia protocol was started for 24 h with paracetamol 1 g IV every 8 h and lornoxicam 8 mg PO every 12 h; if VAS was still over 3 after 30 min, morphine was given as a loading bolus of 0.1 mg/kg IV supplemented with 2 mg IV every 5 minutes until VAS \<3. After 2 h morphine was administered SC ½ of the total loading dose at request.
Group CLidocaineAfter the spinal anesthesia regressed, the investigators performed a single shot femural block with ropivacaine 0,5% 200 mg+ lidocaine 1% 200 mg and 8 mg dexamethasone phosphate.After the block regression, at the first analgetic request the patients received the analgesia protocol was started for 24 h with paracetamol 1 g IV every 8 h and lornoxicam 8 mg PO every 12 h; if VAS was still over 3 after 30 min, morphine was given as a loading bolus of 0.1 mg/kg IV supplemented with 2 mg IV every 5 minutes until VAS \<3. After 2 h morphine was administered SC ½ of the total loading dose at request.
Primary Outcome Measures
NameTimeMethod
the total amount of morphineAt 24 hour postoperative

the morphine administered in milligrams

Secondary Outcome Measures
NameTimeMethod
duration of analgesiathe first 24 hours

the time interval from performing the block until the first analgesic dose required at VAS \>3 (0 - no pain, 10 - the worst pain possible

the number of patients with neurological sensibility side effectsAt 21 days postoperative

Following postoperative sensibility of operated lower limb by pinprick test

the patient satisfactionAt 24 hour postoperative

evaluation of satisfaction by a questionnaire

the number of patients with neurological motility side effectsAt 24 h postoperative

Following the postoperative motility of operated lower limb by Bromage scale

Trial Locations

Locations (1)

Foisor Orthopedics Clinical Hospital

🇷🇴

Bucharest, Romania

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