Effect of Fresh Gas Flow on Emergence Time

Study Overview
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Brief Summary
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The purpose of this study is to evaluate the effect of fresh gas flow on emergence time in patients undergoing transurethral resection of bladder tumor.

Detailed Description
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The purpose of this study is to evaluate the effect of fresh gas flow (5 L/min vs. 10 L/min) on emergence time in patients undergoing transurethral resection of bladder tumor.

Official Title
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Effect of Fresh Gas Flow on Emergence Time in the Patients Undergoing Transurethral Resection of Bladder Tumor: A Randomized Controlled Clinical Trial

Conditions
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Bladder Cancer

Intervention / Treatment
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* Procedure: Fresh gas flow of 5 L/min
* Procedure: Fresh gas flow of 10 L/min


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients who are scheduled transurethral resection of bladder tumor under general anesthesia Patients aged between 20 and 79 years old American Society of Anesthesiologists physical status ≤2 Patients who are voluntarily agreed to this clinical study Exclusion Criteria: A long operation (2 hours or longer) Hearing disturbance Cognitive disorder Psychiatric substance abuse Patient's denial

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 79 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
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Group Five<br>For emergence from general anesthesia, a fresh gas flow of 5 L/min is used. | Procedure: Fresh gas flow of 5 L/min<br>* A fresh gas flow of 5 L/min is used during emergence from general anesthesia.<br>|
| Experimental: Group Ten<br>For emergence from general anesthesia, a fresh gas flow of 10 L/min is used. | Procedure: Fresh gas flow of 10 L/min<br>* A fresh gas flow of 10 L/min is used during emergence from general anesthesia.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Emergence time | When consciousness and self respiration are fully recovered after surgery is ended, extubation is tried. The time to extubation (emergence time) is recorded. | From end of surgery to extubation (assessed up to 30 minutes after surgery) | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Time to spontaneous movement | After surgery is stopped, the patients are asked to open their eyes every 1 minute after the termination of sevoflurane administration. The time to spontaneous movement is recorded. | From end of surgery to spontaneous movement (assessed up to 30 minutes after surgery) | 
| Time to eye opening | After surgery is stopped, the patients are asked to open their eyes every 1 minute after the termination of sevoflurane administration. The time to eye opening is recorded. | From end of surgery to eye opening (assessed up to 30 minutes after surgery) |