Utility of Syringe Based Suction Versus Channel Suction in Bronchoalveolar Lavage
| Status: | Completed |
|---|---|
| Conditions: | Pulmonary |
| Therapuetic Areas: | Pulmonary / Respiratory Diseases |
| Healthy: | No |
| Age Range: | 18 - Any |
| Updated: | 1/1/2014 |
| Start Date: | July 2012 |
| End Date: | August 2013 |
| Contact: | Brent Brown, MD |
| Email: | brent-brown@oushc.edu |
| Phone: | 405-271-6173 |
Bronchoalveolar lavage (BAL) is a common technique among pulmonologists. Its goal is to
collect cells from alveolar units. This is done by wedging a flexible bronchoscope in a
bronchus, instilling saline, and removing the saline via suction. Two techniques are
currently used for suctioning: syringe based and channel suction.
The investigators concern is that channel suction creates too much force and there is
collapsing of the airways which results in decreased fluid removal as well as cell sampling.
The investigators propose that syringe based suctioning will not only return more of the
instilled fluid but also more cells from the alveoli.
collect cells from alveolar units. This is done by wedging a flexible bronchoscope in a
bronchus, instilling saline, and removing the saline via suction. Two techniques are
currently used for suctioning: syringe based and channel suction.
The investigators concern is that channel suction creates too much force and there is
collapsing of the airways which results in decreased fluid removal as well as cell sampling.
The investigators propose that syringe based suctioning will not only return more of the
instilled fluid but also more cells from the alveoli.
The pulmonary segment with the most disease on imaging will be the segment sampled. The
scope will be wedged in the airway leading to that segment and 100mL of saline will be
instilled into the selected segment and collected via the syringe based or channel based
suction. Prior to unwedging, another 100mL of saline will be instilled into the same
segment and will be collected using the alternative method. There will not be
randomization, but the investigators will alternate which method is used first to eliminate
confounding variables. All patients will receive both modalities of suctioning. The wall
suction used for the channel suction will be set at 80 mm Hg. Syringe based suctioning will
be performed with 20mL syringe. Total amount of fluid collected will be recorded and
samples will be sent for cell count and differential as well as Gram stain and culture.
Results of the two techniques will then be compared to determine which is the superior
suctioning modality for BAL.
scope will be wedged in the airway leading to that segment and 100mL of saline will be
instilled into the selected segment and collected via the syringe based or channel based
suction. Prior to unwedging, another 100mL of saline will be instilled into the same
segment and will be collected using the alternative method. There will not be
randomization, but the investigators will alternate which method is used first to eliminate
confounding variables. All patients will receive both modalities of suctioning. The wall
suction used for the channel suction will be set at 80 mm Hg. Syringe based suctioning will
be performed with 20mL syringe. Total amount of fluid collected will be recorded and
samples will be sent for cell count and differential as well as Gram stain and culture.
Results of the two techniques will then be compared to determine which is the superior
suctioning modality for BAL.
Inclusion Criteria:
- Bronchoscopy scheduled
Exclusion Criteria:
- None
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