Displacement Between PVC and Silicon DLT

Y

Yeungnam University College of Medicine

Status

Completed

Conditions

Surgical Procedure, Unspecified
Endotracheal Tube Wrongly Placed During Anesthetic Procedure

Treatments

Device: PVC DLT
Device: silicon DLT

Study type

Interventional

Funder types

Other

Identifiers

NCT02691468
YeungnamUDLT

Details and patient eligibility

About

The purpose of this study is to compare difference of displacement between Polyvinyl Chloride(PVC) and Silicon double-lumen endobronchial tubes(DLTs) during changing position from supine to lateral in thoracic surgery.

Full description

Lung isolation and differential lung ventilation, resulting in collapse of operative lung and ventilation of non-operating lung (one lung ventilation; OLV) are essential for thoracic surgery in lung, esophagus and thoracic aorta. DLT, consisted of tracheal and bronchial lumens, is commonly used to perform differential lung ventilation. The correct position of each lumen in trachea and main bronchus is essential for successful OLV. However, DLT displacement occurs commonly while patients are changed position from the supine to the lateral. The deleterious consequences of a malpositioned DLT can be substantial, even life-threatening including severe hypoxemia. Considering displacement of DLT during position change and surgical traction, previous studies recommended endobronchial cuff of DLT should be positioned at 0.5cm below the tracheal carina when using left-sided DLT. However, it is based on the data from several research conducted by PVC DLT. These days, Silicon DLT, different in material from PVC DLT, is also widely used in clinical practice. Silicon DLT is different in not only position of ballon but also distance of each lumen. Furthermore,there are no identified studies about the displacement of silicon DLT during patient position change in thoracic surgery. Therefore, it is necessary to measure the movement of silicon DLT during positional change from supine to lateral for finding the proper positioning of DLT. The investigators compare the difference of displacement between PVC DLT and silicon DLT distance during positional change from supine to lateral by fiberotic bronchoscope. And the investigators try to find proper position of PVC and silicon DLT, respectively, to perform safe and successful OLV during thoracic surgery.

Enrollment

108 patients

Sex

All

Ages

18 to 75 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • Patient required differential lung ventilation in elective thoracic surgery American society of Anesthesiologist physical status(ASA PS) 1~3

Exclusion criteria

  • emergency surgery, difficult intubation, poor lung function to accomplish OLV during surgery

Trial design

Primary purpose

Prevention

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Single Blind

108 participants in 2 patient groups

PVC DLT
Active Comparator group
Description:
After the induction of general anesthesia, a left sided PVC DLT was placed by the anesthesiologist using direct laryngoscopy. Tube position was confirmed with fiberotic bronchoscope. The first set of measurements tracheal distance(from tracheal carina to proximal tip of DLT) and bronchial distance(from bronchial carina to distal tip of DLT) measured by bronchoscope is taken in supine position . The second set of measurements is taken in lateral position after position change. The displacement of PVC DLT is calculated from difference in tracheal distance between supine and lateral position.
Treatment:
Device: PVC DLT
silicon DLT
Active Comparator group
Description:
After the induction of general anesthesia, a left sided silicon DLT was placed by the anesthesiologist using direct laryngoscopy. Tube position was confirmed with fiberotic bronchoscope. The first set of measurements tracheal distance(from tracheal carina to proximal tip of DLT) and bronchial distance(from bronchial carina to distal tip of DLT) measured by bronchoscope is taken in supine position . The second set of measurements is taken in lateral position after position change. The displacement of silicon DLT is calculated from difference in tracheal distance between supine and lateral position.
Treatment:
Device: silicon DLT

Trial documents
1

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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