Selective Trunk Block: A Study to Evaluate Block Dynamics, Effects and Efficacy for Upper Limb Surgery
Selective Trunk Block: A Prospective Non-Randomized Study to Evaluate Block Dynamics, Effects on Ipsilateral Hemidiaphragmatic (Phrenic Nerve) Function and Efficacy for Upper Extremity Surgery
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
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Kowloon
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Shatin, Kowloon, Hong Kong
- Department of Anaesthesia & Intensive Care, Prince of Wales Hospital
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- elective upper extremity surgery
- emergency upper extremity surgery
Exclusion Criteria:
- Patient refusal
- pregnancy
- local skin site infection
- allergy to local anesthetics
- bleeding tendency
- pre-existing neurological deficit
- pre-existing neuromuscular disease.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: N/A
- Interventionel model: Enkelt gruppeopgave
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
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Eksperimentel: Selective Brachial plexus block
Selective brachial plexus block will be done under ultrasound guidance to patients scheduled for upper extremity surgeries.
Local anesthetic agents (a mixture of 2% lidocaine with 1:200,000 epinephrine and 0.5% levobupivacaine in a total of 25ml) will be injected at the superior, middle, and inferior trunks of the brachial plexus in order to anesthetize the whole upper limb.
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It is one type of peripheral nerve blocks for upper extremity surgery.
In this study, the block will be done under the ultrasound guidance and the local anesthetic agent (a mixture of 2% Xylocaine with 1:200,000 adrenaline and 0.5% Chirocaine in a total of 25ml) will be injected at the trunks of the brachial plexus in order to produce the surgical anesthesia of the whole upper extremity of the patients scheduled for upper limb surgeries.
Andre navne:
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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Changes of sensory block of the upper extremity
Tidsramme: within 45 minutes after the block at 5 minutes interval
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Sensation to coldness (ice) will be tested at the median (lateral three and half digits on the palmar side), radial (dorsal side of hand), ulnar (medial one and a half digits), musculocutaneous (lateral side of the forearm) and axillary (skin over the lower deltoid) and graded using a verbal rating scale (VRS:0-100, 100=normal sensation, 0=no sensation).
Onset of sensory block for each nerve will be defined as the time that it took to achieve a sensory block score of =<30.
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within 45 minutes after the block at 5 minutes interval
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Changes of motor block of the upper extremity
Tidsramme: within 45 minutes after the block at 5 minutes interval
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Motor blockade will be graded using a 3-points scale revising from previous study: 2=no block, 1=paresis and 0=paralysis.
Motor blockade of each individual nerve in the anesthetized upper extremity will be evaluated by testing for opposition of thumb with the index finger (median nerve), wrist extension (radial nerve), thumb opposition with little finger (ulnar nerve), elbow flexion (musculocutaneous nerve) abduction of shoulder (axillary nerve), and external rotation of the arm with elbow flexed and simulate emptying a can motion and test for power against resistance (Suprascapular nerve).
The onset of motor block for each nerve will be defined as motor grading at each nerve =<1.
Complete block will be defined as a sensory and motor block score of '0' in all nerves functions.
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within 45 minutes after the block at 5 minutes interval
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Readiness for surgery
Tidsramme: within 45 minutes after the block at 5 minutes interval
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overall sensory scores =<30 (VRS: 0-100, 100=normal sensation, 0=no sensation) and motor score =<1 (3-points scale, 2=no block, 1=paresis, 0=paralysis) in all the nerves tested.
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within 45 minutes after the block at 5 minutes interval
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Changes of the Diaphragmatic function
Tidsramme: Baseline (before brachial plexus block) and at 30 minutes after block
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Excursion of the right hemidiaphragm will be measured by ultrasound machine in supine position via the anterior subcostal route.
The movement of the diaphragm will be measured in centimetres.
The range of diaphragmatic excursion will be recorded from the resting expiratory position to deep inspiration (sigh test) as will be range of diaphragmatic movement from resting expiratory position when quickly inspiring through the nose (sniff test).
The decrease in diaphragmatic excursion will be calculated as the difference (in percentage) in diaphragmatic excursion measured before and 30 minutes after SeTB.
Reduction in diaphragmatic excursion of more than 75% of baseline, or no movement, or paradoxical movement will be considered as complete paresis.
Reduction in diaphragmatic excursion of between 25% and 75% will be considered as partial paresis and diaphragmatic excursion of less than 25% will be considered as 'no paresis'.
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Baseline (before brachial plexus block) and at 30 minutes after block
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Publikationer og nyttige links
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- Updated SeTB (CREC.2020.308)
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
Studerer et amerikansk FDA-reguleret lægemiddelprodukt
Studerer et amerikansk FDA-reguleret enhedsprodukt
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