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Single and Double Operator Techniques in Ultrasound-guided Peripheral Nerve Block Learning Curve

Comparison of Single and Double Operator Techniques in Ultrasound-guided Peripheral Nerve Block Learning Curve for Anesthesia Residency Training on a Gelatin-based Phantom Model: a Prospective Randomized Controlled Study

Status
UNKNOWN
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04487366
Enrollment
50
Registered
2020-07-27
Start date
2020-07-01
Completion date
2020-10-01
Last updated
2020-07-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Anesthesiology Training, Jedi Grip, Single-handed Ultrasound-guided Regional Anaesthesia Grip, Single-operator Ultrasound-guided Peripheric Nerve Block

Keywords

Jedi Grip, single-operator ultrasound-guided regional anaesthesia grip, Single-handed ultrasound-guided regional anaesthesia, 'On lock' grip, Anesthesiology training

Brief summary

Aim of this study is to compare learning curves of single(1- Jedi grip: Pappin and Christie/ 2- Bedforth/ 3- on lock: Gupta and Berrill) and double operator ultrasound-guided peripheric nerve block techniques on a home-made gelatin-based phantom model.

Detailed description

Ultrasound-guided peripheral blocks are conventionaly performed by double operators. One operator controls both the ultrasound probe and peripheric block needle. Another assistant operator aspirate or injects local anesthetic. In this technique operator do not sense resistance in the syringe. Also this technique requires a well-done communication and coordination between operators. In order to eliminate disadvantages of this technique several single-operator grip techniques of the needle and syringe have been described(1- Jedi grip: Pappin and Christie/ 2- Bedforth/ 3- on lock: Gupta and Berrill). Single operator techniques allow the provider to perform independently. Aim of this study is to compare learning curves of single and double operator ultrasound-guided peripheric nerve block techniques on a home-made gelatin-based phantom model.

Interventions

OTHERreaching targeted area on the phantom model

resident reach the targeted area on the phantom model using ultrasoun guidance and independently or with asistance inject the solution

Sponsors

Ankara City Hospital Bilkent
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
OTHER
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
24 Years to 40 Years
Healthy volunteers
No

Inclusion criteria

\- To be a junior resident of anesthesiology(\< 2 years )

Exclusion criteria

* Refusal of resident

Design outcomes

Primary

MeasureTime frameDescription
success of injection3during implementation of procedure on phantom model(third session)successful if injected water flows from hose of model/ unsuccessful if solution do not flow
needling time 3during implementation of procedure on phantom model(third session)time to reach target area with block needle
success of injection2during implementation of procedure on phantom model(second session)successful if injected water flows from hose of model/ unsuccessful if solution do not flow
Time to correct grip1during implementation of procedure on phantom model(first session)Time(sec) from start command to correct grip of the probe, needle and syringe for each technique
image quality1during implementation of procedure on phantom model(first session)provided image quality by resident for each technique which is assessed by investigator by four point Liker Scale( 1- much worse 2- worse 3- better 4- much better)
number of attempts1during implementation of procedure on phantom model(first session)number of attempts until correct needling to target area
needling time 1during implementation of procedure on phantom model(first session)time to reach target area with block needle
success of injection1during implementation of procedure on phantom model(first session)successful if injected water flows from hose of model/ unsuccessful if solution do not flow
Time to correct grip2during implementation of procedure on phantom model(second session)Time(sec) from start command to correct grip of the probe, needle and syringe for each technique
Time to correct grip3during implementation of procedure on phantom model(third session)Time(sec) from start command to correct grip of the probe, needle and syringe for each technique
image quality2during implementation of procedure on phantom model(second session)provided image quality by resident for each technique which is assessed by investigator by four point Liker Scale( 1- much worse 2- worse 3- better 4- much better)
image quality3during implementation of procedure on phantom model(third session)provided image quality by resident for each technique which is assessed by investigator by four point Liker Scale( 1- much worse 2- worse 3- better 4- much better)
number of attempts2during implementation of procedure on phantom model(second session)number of attempts until correct needling to target area
number of attempts3during implementation of procedure on phantom model(third session)number of attempts until correct needling to target area
needling time 2during implementation of procedure on phantom model(second session)time to reach target area with block needle

Secondary

MeasureTime frameDescription
Assesment of educationduring education of techniquesResidents assesment of pre-procedural education with a questtionarie. Education was sufficient enough to safely perform peripheral block: 1. I absolutely agree 2. I approve 3. I am indecisive 4. I do not approve 5. Absolutely Disagree
NASA-TLX (NASA Task Load Index)during implementation of procedure on phantom model(third session)Resident assessment of each techniques for Mental Demand ,Physical Demand, Temporal Demand, Performance, Effort and Frustration

Countries

Turkey (Türkiye)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026