Unique ID issued by UMIN | UMIN000020534 |
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Receipt number | R000023705 |
Scientific Title | Is interfascial injection approach really compatible with nerve stimulating approach during ultrasound-guided obturator nerve block? |
Date of disclosure of the study information | 2016/01/12 |
Last modified on | 2016/03/21 12:51:45 |
Is interfascial injection approach really compatible with nerve stimulating approach during ultrasound-guided obturator nerve block?
ultrasound-guided obturator nerve block
Is interfascial injection approach really compatible with nerve stimulating approach during ultrasound-guided obturator nerve block?
ultrasound-guided obturator nerve block
Asia(except Japan) |
bladder cancer
Urology | Anesthesiology |
Others
NO
Transurethral resection of bladder tumor (TURB) has been essential treatment for bladder tumors. Direct electrical stimulation of an obturator nerve (ON) during TURB procedures can trigger an inadvertent adductor muscle spasm, which can cause a serious complication like bladder perforation. Spinal anesthesia with selective obturator nerve block (ONB) can be performed for TURB, however adductor spasm also can be induced because of incomplete ONB. Ultrasound guidance with nerve stimulator has been known to enhance the efficacy of the ONB.
On the other hand, there are some reports that the efficacy of interfascial injection with ultrasound only is similar to the ultrasound guidance with nerve stimulation, which is got through the idea of ON passing through the given pathway; After exiting the obturator canal, the anterior branch has been known to be located within the interfascial layers among adductor longus, adductor brevis, and pectineus muscles, and the posterior branch is located within the interfascial layers between the adductor brevis and adductor magnus muscles at the inguinal crease.
We wonder whether the injection of the fixed-site within the interfascial layers can really cover the exact pathway of ON branches, considering the anatomical variability of ON at the inguinal crease. Therefore, we want to investigate whether interfascial injection is really compatible with nerve stimulator in the ONB.
Efficacy
success rate of ultrasound-guided obturator nerve block with ultrasound-guided interfascial group (US-IFI group) and ultrasound-guided nerve stimulator group (US-NS group)- Complete ONB will be confirmed with nerve stimulator at the end of the procedure, and if the residual twitching remained, the case is considered to be a 'fail'.
time- after the end of the procedure ONB
After that, the obturator reflex grade will be checked during TURB by two assistants of urology.
time- right after starting the TURB
Interventional
Parallel
Randomized
Individual
Single blind -participants are blinded
Active
2
Prevention
Device,equipment |
(US-IFI group;experimental)
ultrasound only (whether ultrasound without nerve stimulator can be enough for obturator block)
duraton: when gathering 31 cases
(US-NS gorup; active comparator)
nerve stimulator and ultrasound
known method
duration: when gathering 31 cases
20 | years-old | <= |
80 | years-old | >= |
Male and Female
all patients anticipating TURB with American Society of Anesthesiologists Physical Status (ASA) I or II
patients with diabetes or peripheral neuropathy, ASA greater than III, coagulation disorders, known allergy to local anesthetics, uncooperative patients and patients' refusal
62
1st name | |
Middle name | |
Last name | Mi Geum Lee |
Gachon University Gil Medical Center
Anesthesiology and Pain medicine
Namdong-daero 774 beon-gil, Namdong-gu, Incheon 21565 Korea
82-32-460-3637
mikeum2@gilhospital.com
1st name | |
Middle name | |
Last name | Mi Geum Lee |
Gachon University Gil Medical Center
Anesthesiology and Pain Medicine
Namdong-daero 774 beon-gil, Namdong-gu, Incheon 21565 Korea
82-32-460-3637
mikeum2@gilhospital.com
Gachon University Gil Medical Center
none
Non profit foundation
NO
Gachon University Gil Medical Center (Incheon)
2016 | Year | 01 | Month | 12 | Day |
Unpublished
Completed
2016 | Year | 01 | Month | 10 | Day |
2016 | Year | 01 | Month | 20 | Day |
2016 | Year | 03 | Month | 18 | Day |
2016 | Year | 03 | Month | 21 | Day |
2016 | Year | 01 | Month | 12 | Day |
2016 | Year | 03 | Month | 21 | Day |
Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000023705
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