Feasibility and Accuracy of a Novel Pleural Drain Gas Analyzer in Detecting Air Leaks

The goal of this study is to assess the clinical feasibility of a novel, reusable, low cost gas analyzer that detects breath in chest drains in order to diagnose and heal air leaks. The investigators have developed prototype gas analyzers that attach to the outlet of any analog chest drain, and can be connected temporarily to the sampling port. They detect breath by measuring CO2, O2, and pressure, in order to supplement the information provided by the bubbles in the water seal.