Comparison of Perineural Catheter Depth for the Continuous Popliteal Nerve Block Using Ultrasound Guidance and Dermabond

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

83 participants

Study Classification

INTERVENTIONAL

Study Start Date

2012-05-31

Study Completion Date

2015-07-31

Brief Summary

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The study will investigate the difference in success rate between popliteal peripheral nerve catheters placed at 1 centimeter compared to 5 centimeters past the tip of a Tuohy needle.

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Detailed Description

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Traditionally for the lower extremity, peripheral nerve catheters have been threaded greater than or equal to 5 centimeters past the tip of the Tuohy needle. The major rational for this practice is to reduce dislodgement. However, the greater the distance that a catheter is advanced, the greater the risk of contacting undesired structures, kinking, looping and knotting. For the continuous popliteal nerve block, the catheter is threaded perpendicular to the course of the nerve. This could result in the tip of the catheter being a significant distance from the targeted nerve which may lead to a decrease in the success rate or efficacy of the block.

Greater efficacy may be seen if the needle is closer to its target. This may be quantified by documenting a faster onset of motor and sensory changes and/or a lower catheter infusion rate required to maintain pain control. The study will investigate the difference in success rate between popliteal peripheral nerve catheters placed at 1 centimeter compared to 5 centimeters past the tip of a Tuohy needle.

Conditions

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Neuromuscular Inhibition

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Outcome Assessors

Study Groups

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Group 1

Group Type EXPERIMENTAL

1 cm

Intervention Type PROCEDURE

A Tuohy needle will be advanced in-plane with the bevel cephalad to a point that lies between the tibial and common peroneal branches of the sciatic nerve. The catheter will be advanced 1 cm past the tip of the Tuohy

Group 2

Group Type EXPERIMENTAL

5 cm

Intervention Type PROCEDURE

A Tuohy needle will be advanced in-plane with the bevel cephalad to a point that lies between the tibial and common peroneal branches of the sciatic nerve. The catheter will be advanced 5 cm past the tip of the Tuohy

Interventions

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1 cm

A Tuohy needle will be advanced in-plane with the bevel cephalad to a point that lies between the tibial and common peroneal branches of the sciatic nerve. The catheter will be advanced 1 cm past the tip of the Tuohy

Intervention Type PROCEDURE

5 cm

A Tuohy needle will be advanced in-plane with the bevel cephalad to a point that lies between the tibial and common peroneal branches of the sciatic nerve. The catheter will be advanced 5 cm past the tip of the Tuohy

Intervention Type PROCEDURE

Other Intervention Names

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18 gauge 100mm Contiplex Tuohy needle 20-gauge non-stimulating catheter 18 gauge 100mm Contiplex Tuohy needle 20-gauge non-stimulating catheter

Eligibility Criteria

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Inclusion Criteria

* Will be having a popliteal nerve blocks

Exclusion Criteria

* \< 18 years old
* BMI \> 35
* Pregnant patients
* Diabetes mellitus or patients with known neuropathy
* Amputations \& polytrauma patients
* Patients allergic to local anesthetics
* Chronic Pain patients
* Patients in whom communication is a problem

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No