A Blind Maneuver to Position an Endobronchial Blocker

A Blind Maneuver to Position an Endobronchial

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT01364142

Enrollment

Registered

2011-06-02

Start date

2011-06-30

Completion date

2012-02-29

Last updated

2012-06-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Endobronchial Blocker, Fiberoptic Bronchoscopy, One Lung Ventilation, Thoracic Surgery

Brief summary

One-lung ventilation can be provided by an endobronchial blocker. The Uniblocker® (Fuji Systems Corporation, Tokyo, Japan) was relatively recently introduced into clinical practice. We will try to devise a blind method to locate the Uniblocker® without the aid of fiberoptic bronchoscopy.

Detailed description

The use of a fiberoptic bronchoscopy (FOB) appears to be fundamental to adjusting position of the bronchial blocker in the targeted mainstem bronchus. However, there can be occasions when a FOB is unavailable or inapplicable. Therefore, we will try to devise a blind method to locate the blocker without the aid of FOB in patients undergoing thoracic surgery. After intubation of endotracheal tube (ETT), the Uniblocker® is inserted into the ETT and is advanced until the blocker balloon comes out of the ETT tip. At this time, the blocker balloon is inflated with air and the peak inspiratory pressure (PIP) will abruptly increase. And then, the blocker is rotated to the thoracotomy side and advanced to the carina step by step at 0.5 cm intervals. When the PIP drops abruptly, the blocker cuff is deflated completely and advanced to 3 cm further. The blocker cuff is inflated again. Using a FOB, the position of the blocker is recorded and we will evaluate the success rate of proper blocker position.

Interventions

PROCEDUREendobronchial blocker

After intubation of endotracheal tube, the Uniblocker® was inserted into the endotracheal tube and advanced step by step with inflation of the blocker balloon until the peak inspiratory pressure dropped abruptly.

Study design

Observational model

CASE_ONLY

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to 80 Years

Healthy volunteers

Inclusion criteria

* patients undergoing thoracic surgery who need one lung ventilation

Exclusion criteria

* patients who have a lesion in trachea or mainstem bronchi * severe tracheal deviation * patients who do not agree to informed consent

Countries

South Korea

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026