| | CHEST: Diagnosis of tracheoesophageal fistula by analysis of gastric air (Site not responding. Last check: 2007-11-03) |
 | | Tracheoesophageal fistula usually is demonstrated by radiologic contrast study or by direct endoscopic visualization.[1-3] However, these studies may be cumbersome in unstable patients who are intubated for positive pressure ventilation. |
 | | To support the suspicion of recurrent tracheoesophageal fistula, specimens of gas from the ventilator, the patient's stomach (via gastrostomy tube), and the room air adjacent to the patient's mouth were obtained simultaneously and analyzed for [O.sub.2] and [CO.sub.2]. |
 | | Recurrent tracheoesophageal fistula was confirmed by esophagoscopy, at the time of which the tracheostomy cuff was visualized protruding into the esophagus 2 to 3 cm below the upper esophageal sphincter. |
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