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Clinical Trial Summary

The purpose of this study is to determine if there are any differences in terms of safety, pain, or drainage speed between thoracenteses via manual drainage vs vacuum suction.

Clinical Trial Description

Patients with pleural effusions routinely undergo thoracentesis in which a catheter is placed into the pleural space to remove the fluid both for diagnostic and therapeutic reasons. In this setting, large amounts (often liters) of fluid are removed to palliate the patient's symptoms of breathlessness.

Thoracentesis is the most commonly performed and least invasive method to remove pleural fluid. These frequently performed using a catheter drainage system where a small, flexible temporary catheter is inserted over a needle into the pleural cavity. After insertion of catheter into the pleural space, the operator has two drainage system options: 1. Manual drainage via syringe-pump that connects to drainage bag or 2. Drainage into a vacuum bottle. Both are routinely performed in almost every hospital in the United States.

Pleural pressure (Ppl) is determined by the elastic recoil properties of the lung and chest wall. Normal pleural pressure is estimated to be -3 to -5 cm H20 at functional residual capacity. During drainage of pleural fluid, negative pressure is applied either via syringe during manual drainage or via vacuum using vacuum drainage bottle. Hypothetically more negative pressure can translate to increased perception of pain or visceral pleural injury.

Two techniques (manual vs vacuum drainage) are used based on the operator preference and both are standard of care. To our knowledge there is no head to head comparison of these two available systems of drainages during thoracentesis of pleural effusions. Knowing if one is superior to the other will aid future clinicians. ;

Study Design

Related Conditions & MeSH terms

NCT number NCT03496987
Study type Interventional
Source Yale University
Status Completed
Phase N/A
Start date December 1, 2015
Completion date March 1, 2018

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