A Comparison Between Posterior, Lateral and Medial Approaches for Ultrasound-guided Popliteal Block

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

120 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-04-01

Study Completion Date

2021-04-30

Brief Summary

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Background: Popliteal block is a widely used technique to provide anesthesia or analgesia for below-knee surgical procedures. In this study, the investigators compare ultrasound-guided popliteal blocks via posterior, lateral, and medial approaches to find out the approach with the best outcome.

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Detailed Description

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Methods: In this randomized, controlled clinical trial, one hundred and twenty ASA physical status of class I and II patients undergoing below-knee surgery were involved. These patients were divided into three equal groups at randomly based on the route assigned for the US-guided popliteal block: the posterior, lateral, and medial approach groups. In this study, technical characteristics \[number of attempts to get the proper injection site and block performance time\], anesthetic and analgesic characteristics \[success rate, block onset, potency, and duration, time to ask, and the consumed amount of postoperative analgesia\], discomfort rate in respect to position and needle insertion and the associated complications were recorded.

Conditions

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Nerve Pain

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

SUPPORTIVE_CARE

Blinding Strategy

SINGLE

Participants

Study Groups

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popliteal block posterior approach group

through posterior approach ultrasound guided sciatic nerve block at popliteal fossa 20ml of the selected local anesthetic mixture (10ml of 0.5% bupivacaine mixed with 10ml of 2% lidocaine, each with 1:200,000 epinephrine) was injected incrementally

Group Type ACTIVE_COMPARATOR

popliteal block

Intervention Type PROCEDURE

using ultrasound to detect sciatic nerve and popliteal fossa through different approaches using 20ml of the selected local anesthetic mixture (10ml of 0.5% bupivacaine mixed with 10ml of 2% lidocaine, each with 1:200,000 epinephrine) was injected incrementally

popliteal block lateral approach group

ultrasound guided sciatic nerve block at popliteal fossa through lateral approach 20ml of the selected local anesthetic mixture (10ml of 0.5% bupivacaine mixed with 10ml of 2% lidocaine, each with 1:200,000 epinephrine) was injected incrementally

Group Type ACTIVE_COMPARATOR

popliteal block

Intervention Type PROCEDURE

using ultrasound to detect sciatic nerve and popliteal fossa through different approaches using 20ml of the selected local anesthetic mixture (10ml of 0.5% bupivacaine mixed with 10ml of 2% lidocaine, each with 1:200,000 epinephrine) was injected incrementally

poplitea block medial approach group

ultrasound guided sciatic nerve block at popliteal fossa through medial approach 20ml of the selected local anesthetic mixture (10ml of 0.5% bupivacaine mixed with 10ml of 2% lidocaine, each with 1:200,000 epinephrine) was injected incrementally

Group Type ACTIVE_COMPARATOR

popliteal block

Intervention Type PROCEDURE

using ultrasound to detect sciatic nerve and popliteal fossa through different approaches using 20ml of the selected local anesthetic mixture (10ml of 0.5% bupivacaine mixed with 10ml of 2% lidocaine, each with 1:200,000 epinephrine) was injected incrementally

Interventions

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popliteal block

using ultrasound to detect sciatic nerve and popliteal fossa through different approaches using 20ml of the selected local anesthetic mixture (10ml of 0.5% bupivacaine mixed with 10ml of 2% lidocaine, each with 1:200,000 epinephrine) was injected incrementally

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* ASA physical status (PS) class I and II
* weighing 70-85 kg,
* undergoing elective below knee surgeries

Exclusion Criteria

* patients who refused to participate in the study
* those having an allergy to local anesthetics
* peripheral neuropathy, coagulopathy
* diabetes mellitus
* severe hepatic
* renal impairment
* infection, mass and crush injury or open wound at the nerve block site
* patients receiving chronic analgesic therapy.

Minimum Eligible Age

21 Years

Maximum Eligible Age

50 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes