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Shoulder Arthroscopic SurgeryNCT01401205

The Predictor of Respiratory Discomfort After the Shoulder Arthroscopic Surgery

An observational study of Shoulder Arthroscopic Surgery, run by Samsung Medical Center at 1 site in South Korea.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The investigators applied upper airway ultrasonographic examination focusing the measurement of upper airway diameters in patients undergoing shoulder arthroscopic surgery to evaluate the change of upper airway anatomy before and after the surgery. Read more about this study

Who is it for?
Ages 20 to 70 years
Conditions the study is for
Shoulder Arthroscopic Surgery
What is being tested?
upper airway ultrasonographic examination
How many people
100 participants
Where
1 siteSouth Korea
Study dates
Jul 2011to Dec 2012
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 20 to 70 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: patients undergoing elective shoulder arthroscopic surgery (rotator cuff repair)

Who may be able to join

  • patients undergoing elective shoulder arthroscopic surgery (rotator cuff repair)

Who cannot join

  • patients with airway anomaly
  • patients with anticipated difficult airway
  • patients with hemodynamic unstability
  • patients with severe cardiopulmonary disease

Trial locations and contacts

1 site in 1 country.

South Korea1 site
  • Samsung Medical Center

    Seoul, 135-710

Other trials in South Korea

About this study

Official title: The Predictor of Respiratory Discomfort After the Shoulder Arthroscopic Surgery as Measured by Upper Airway Ultrasonography

The investigators applied upper airway ultrasonographic examination focusing the measurement of upper airway diameters in patients undergoing shoulder arthroscopic surgery to evaluate the change of upper airway anatomy before and after the surgery. The investigators also tried to find any findings of ultrasonographic examination that could reliably predict the dyspnea or airway compression after extubation. The investigators tried to compare the ultrasonographic findings with those of chest radiograph to validate the measurements of the ultrasonographic examination. A cuff leak test was preformed to evaluate its ability to predict the upper airway obstruction in shoulder arthroscopic surgery.

Read the detailed description

During shoulder arthroscopic surgery, extravasation of irrigation fluid can occur around the shoulder and trachea, compressing the upper airway. Although the extravasation is generally reabsorbed asymptomatically within 12 hours, there are cases that lead to reintubation or life-threatening complications.

An endotracheal tube is the most reliable method of securing the airway from airway obstruction during a shoulder arthroscopy surgery. However, since the airway may become obstructed after extubation, airway patency should be verified before extubation. Direct visualization of the larynx or trachea using laryngoscopy or bronchoscopy is difficult due to the presence of the tracheal tube. A cuff leak around the tracheal tube in a cuff-deflated condition is suggested to be a predictor of successful extubation. However, its reliability has been questioned in adult patients. A cuff leak could be affected by paratracheal pressure, which is thought to be elevated during shoulder arthroscopy. In a recent study, it was shown that laryngeal ultrasound can be a reliable, non-invasive method for the evaluation of laryngeal morphology or predicting post-extubation stridor.

The investigators applied upper airway ultrasonographic examination focusing the measurement of upper airway diameters in patients undergoing shoulder arthroscopic surgery to evaluate the change of upper airway anatomy before and after the surgery. The investigators also tried to find any findings of ultrasonographic examination that could reliably predict the dyspnea or airway compression after extubation. The investigators tried to compare the ultrasonographic findings with those of chest radiograph to validate the measurements of the ultrasonographic examination. A cuff leak test was preformed to evaluate its ability to predict the upper airway obstruction in shoulder arthroscopic surgery.

Being tested
upper airway ultrasonographic examination
Keywords
shoulder arthroscopic surgery, dyspnea, airway diameter
Medical subject headings
Dyspnea

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • upper airway ultrasonographic examinationOther

    Also called upper airway ultrasonographic examination ,, cuff leak test

    upper airway ultrasonographic examination and cuff leak test

Study groups in NCT01401205
Study groupRoleWhat they receive
shoulder arthroscopic surgery groupthe patients who undergo the elective shoulder arthroscopic surgery of rotator cuff repair
Receives: Other: upper airway ultrasonographic examination

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Airway transverse diameter

    airway transverses diameter measured on the upper airway ultrasonographic image: measure at three level (vocal cord, subglottis, trachea)

    Measured: 10 min before anesthesia induction

  2. Airway transverse diameter

    airway transverses diameter measured on the upper airway ultrasonographic image: measure at three level (vocal cord, subglottis, trachea)

    Measured: 20 min after end of surgery

Secondary outcomes (4)
  1. depth of skin to airway anterior border

    depth of skin to airway anterior border measured at three levels: vocal cord, subglottis, trachea level

    Measured: 10 min before anesthesia induction and 20 min after the surgery

  2. depth of skin to pleura

    bilateral depth of skin to pleura at first and third intercostal space on the midclavicualr line measuread on the ultrasonographic image

    Measured: 10 min before anesthesia induction and 20 min after the end of surgery

  3. endotracheal tube balloon cuff pressure

    endotracheal tube balloon cuff pressure

    Measured: 10 min after anesthesia induction and 60 min after surgery start

  4. percent cuff leak

    The difference in the actual exhaled volume between the averages of pre- and post-cuff deflation was calculated. This number was divided by the tidal volume before cuff deflation and multiplied by 100. The resulting number was recorded as the percent cuff leak.

    Measured: 10 min after anesthesia induction and 60 min after surgery start

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted25 Jul 2011 (estimated)
  2. Study startJul 2011
  3. Primary completionDec 2012
  4. Study completionDec 2012

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Case only
Time perspective
Prospective
Enrolment
100 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01401205
Sponsor's protocol ID
2011-06-028
Status last verified
Dec 2013
First submitted
21 Jul 2011
Last updated
25 Dec 2013
Results posted
No
Data monitoring committee
No

Questions about this trial

What is this clinical trial studying?

An observational study of Shoulder Arthroscopic Surgery, run by Samsung Medical Center at 1 site in South Korea.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 1 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 25 Dec 2013. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in South Korea. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Airway transverse diameter (time frame: 10 min before anesthesia induction). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 Dec 2013.

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