Comparison of Obturator Nerve Block With Ultrasound Guidance and Anatomical Signs

Study Overview
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Brief Summary
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Comparison of the obturator nerve block in patients undergoing transurethral resection due to bladder tumor, technically using ultrasound guided or blinded with anatomical signs.

Detailed Description
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The primary aim of this study is to compare the success rates of ONB techniques performed with ultrasound guided or blind technique. Its secondary purpose is to compare the effect of peroperative bleeding and control cystoscopy performed in the postoperative 3rd month on the presence of recurrent tumor.

Official Title
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Comparison of Obturator Nerve Block With Ultrasound Guidance and Anatomical Signs in Patients Undergoing Transurethral Resection

Conditions
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Succesful Obturator Nerve Block, Bladder Tumor, Bleeding

Intervention / Treatment
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* Procedure: obturator nerve block


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: ASA I-II patients Exclusion Criteria: Tumors that disrupt the integrity of the bladder, bladder floor tumors, coagulation disorders, motor in the lower limbs with sensory disturbances, uncooperative patients, Known allergy to local anesthetics patients with localized infection at the procedure site

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 70 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: group 1; Ultrasound-guided obturator nerve block group 2; obturator nerve block with anatomical signs
Masking: Triple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Ultrasound-guided obturator nerve block group<br>The ultrasound probe will be placed in the middle of the tuberculum pubis and femoral artery, 5-6 cm below the inguinal ligament, and 5 mL of 0.5% bupivacaine will be injected into the anterior and posterior branches of the ON with a needle. | Procedure: obturator nerve block<br>* The ultrasound probe will be placed in the middle of the tuberculum pubis and femoral artery, 5-6 cm below the inguinal ligament, and 5 mL of 0.5% bupivacaine will be injected into the anterior and posterior branches of the ON with a needle. In the second group, after the patient is placed in the lithotomy position, 1.5 cm lateral tuberculum pubis and 1.5 cm caudal will be marked and needle entry will be made and 0.5% bupivacaine will be injected with 10 mL. The time elapsed until the first needle insertion and local anesthetic injection is completed will be recorded as the application time.<br>|
| Active Comparator: obtutaror nerve block with anatomical landmarks<br>In the second group, after the patient is placed in the lithotomy position, 1.5 cm lateral tuberculum pubis and 1.5 cm caudal will be marked and needle entry will be made and 0.5% bupivacaine will be injected with 10 mL. | Procedure: obturator nerve block<br>* The ultrasound probe will be placed in the middle of the tuberculum pubis and femoral artery, 5-6 cm below the inguinal ligament, and 5 mL of 0.5% bupivacaine will be injected into the anterior and posterior branches of the ON with a needle. In the second group, after the patient is placed in the lithotomy position, 1.5 cm lateral tuberculum pubis and 1.5 cm caudal will be marked and needle entry will be made and 0.5% bupivacaine will be injected with 10 mL. The time elapsed until the first needle insertion and local anesthetic injection is completed will be recorded as the application time.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Preoperative succesful obturator nerve block | peroperative adductor muscle spazm | operation time | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| peroperative bleeding, Presence of recurrent tumor at postoperative 3rd month | peroperative bledding, Control by cystoscopy in the postoperative 3rd month recurrence tumor size | 3 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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obturator nerve block, bladder tumor, ultrasonografi, anatomical signs