Comparison of Tapered- vs. Cylindrical-shaped Tube Cuffs Pressure Alteration With Nitrous Oxide

NCT ID: NCT01812915

Last Updated: 2016-04-07

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

38 participants

Study Classification

INTERVENTIONAL

Study Start Date

2014-01-31

Study Completion Date

2015-04-30

Brief Summary

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When using nitrous oxide for general anesthesia, nitrous oxide diffusion induces intracuff hyperinflation of the endotracheal tube. Furthermore the difference among various types of cuffed endotracheal tubes in cuff pressure behavior during nitrous oxide exposure.

TaperGuard(TM) tube has been newly introduced and has tapered-shape cuff. In vitro study, the intracuff pressure of TaperGuard(TM) tube was lower than that of conventional tube with cylindrical-shaped cuff of the conventional tube(Hi-Lo(TM) tube). Therefore, this clinical study is needed to evaluate the intracuff pressure during general anesthesia with nitrous oxide exposure.

Detailed Description

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During 60 minutes after routine anesthetic induction and intubation of the endotracheal tubes, intracuff pressures will be measured every 10 minutes with a manometer (VBM, Sulz, Germany).

60% nitrous oxide will be added at time 0. For 60 minutes from the beginning of general anesthesia, intracuff pressures will be measured every 10 minutes.

After 60 minutes, Intracuff pressures will be maintained around 20 cm H2O during the remaining period of the surgery.

The questionnaire for a sore throat, hoarseness, and dysphagia will be questioned at about 1, 6, and 24 hours after the surgery and the general anesthesia.

Conditions

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Adverse Effect of Other General Anesthetics Anesthesia Intubation Complication Inhalation of Nitrous Oxide Trachea

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors

Study Groups

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Cylindrical-shape cuff ETT (Group C)

Control group: Mallinckrodt HiLo(TM) endotracheal tube. Intracuff pressures of the tubes every 10 minutes, Adult patients under general anesthesia with Mallinckrodt Hi-Lo(TM) tube.

Group Type EXPERIMENTAL

Cylindrical-shape cuff ETT (Group C)

Intervention Type DEVICE

Randomized allocation of the endotracheal cuffs for general anesthesia, mechanical ventilation will be maintained with Mallinckrodt Hi-Lo(TM) endotracheal tube.

Tapered-shape cuff ETT (Group T)

Experimental group: Mallinckrodt TaperGuard(TM) endotracheal tube. Intracuff pressures of the tubes every 10 minutes, Adult patients under general anesthesia with Mallinckrodt TaperGuard(TM) tube.

Group Type EXPERIMENTAL

Tapered-shape cuff ETT (Group T)

Intervention Type DEVICE

Randomized allocation of the endotracheal cuffs for general anesthesia, mechanical ventilation will be maintained with Mallinckrodt TaperGuard(TM) endotracheal tube.

Interventions

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Cylindrical-shape cuff ETT (Group C)

Randomized allocation of the endotracheal cuffs for general anesthesia, mechanical ventilation will be maintained with Mallinckrodt Hi-Lo(TM) endotracheal tube.

Intervention Type DEVICE

Tapered-shape cuff ETT (Group T)

Randomized allocation of the endotracheal cuffs for general anesthesia, mechanical ventilation will be maintained with Mallinckrodt TaperGuard(TM) endotracheal tube.

Intervention Type DEVICE

Other Intervention Names

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Mallinckrodt Hi-Lo(TM) endotracheal tube Mallinckrodt TaperGuard(TM) endotracheal tube

Eligibility Criteria

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Inclusion Criteria

* Patients who will undergo general anesthesia in a supine position with a neutral position of the head (hand and forearm sugery)
* 18\~70 years old
* American society of anesthesiologists physical status 1-2
* Body mass index \< 30 kg/m2

Exclusion Criteria

* Contraindication for nitrous oxide
* Difficult intubation
* Cormack-Lehane grade \> 3
* Airway-related or pulmonary diseases
* Short or long operation time (\< 1 hour or \> 3 hours)
Minimum Eligible Age

18 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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DongGuk University

OTHER

Sponsor Role lead

Responsible Party

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Junyong In, MD

Associate Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Junyong In, M.D., Ph.D.

Role: PRINCIPAL_INVESTIGATOR

DongGuk University

Locations

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Dongguk University Ilsan Hospital

Goyang, Gyeonggido, South Korea

Site Status

Countries

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South Korea

References

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Tsuboi S, Miyashita T, Yamaguchi Y, Yamamoto Y, Sakamaki K, Goto T. The TaperGuard endotracheal tube intracuff pressure increase is less than that of the Hi-Lo tube during nitrous oxide exposure: a model trachea study. Anesth Analg. 2013 Mar;116(3):609-12. doi: 10.1213/ANE.0b013e318279b399. Epub 2013 Feb 11.

Reference Type BACKGROUND
PMID: 23400983 (View on PubMed)

Other Identifiers

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J In 2013-1

Identifier Type: -

Identifier Source: org_study_id

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