| Effect of noise block using earplugs on propofol sedation requirement during extracorporeal shock wave lithotripsy. | |
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MedLine Citation:
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PMID: 21717887 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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OBJECTIVE: To determine effect of noise block using earplugs on reducing propofol infusion needed to maintain a constant bispectral index (BIS) values in patients undergoing extracorporeal shock wave lithotripsy (ESWL). MATERIAL AND METHOD: Fifty-eight patients (18-65 years) with nephrolithiasis undergoing ESWL, having ASA physical status I or II and have normal hearing function tested by audiometry were enrolled in this randomized, double-blind, controlled trial. Patients were randomized and allocated into two groups: noise blocked group (earplugs inserted into both ears) and control group (earplugs not inserted). Sedation by target-controlled infusion was started with 1.2 mcg/mL of propofol and propofol target concentration was adjusted gradually by 0.2 mcg/ml every 5 minutes intraoperatively to achieve and maintain bispectral index (BIS) values within 75-80% until the procedure finished. Total amount of propofol (mg), BIS values (%), ambient noise level (dB) and patient satisfaction (1-5) were measured. RESULTS: The amount of propofol infusion needed to maintain a constant BIS index value in patients undergoing ESWL in the noise blocked group was significantly lower than that in the control group (6.91 +/- 2.05 vs. 8.23 +/- 2.16 mg/kg/m2/hr, p = 0.021). Patient satisfaction was similar in both groups (4 [1] vs. 4 [1], p = 0.929). CONCLUSION: Noise diminution in ambient operating room can reduce the amount of propofol needed to maintain light sedation during ESWL. |
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Authors:
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Supaporn Tharahirunchot; Suwanna Tatiyapongpinij; Ketchada Uerpairojkit |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of the Medical Association of Thailand = Chotmaihet thangphaet Volume: 94 Suppl 2 ISSN: 0125-2208 ISO Abbreviation: J Med Assoc Thai Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-07-01 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7507216 Medline TA: J Med Assoc Thai Country: Thailand |
Other Details:
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Languages: eng Pagination: S103-7 Citation Subset: IM |
Affiliation:
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Department of Anesthesiology, Rajavithi Hospital, College of Medicine, Rangsit University, Bangkok, Thailand. supabura@windowslive.com |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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