title: [Results of conservative treatment in patients with occult pneumothorax].
abstract: BACKGROUND
  An occult pneumothorax is found in 2-15% trauma patients. Observation (without tube thoracostomy) in these patients presents still some controversies in the clinical practice. The objective of the study is to evaluate the efficacy and the adverse effects when observation is performed.
  
  
  METHODS
  A retrospective observational study was undertaken in our center (university hospital level II). Data was obtained from a database with prospective registration. A total of 1087 trauma patients admitted in the intensive care unit from 2006 to 2013 were included.
  
  
  RESULTS
  In this period, 126 patients with occult pneumothorax were identified, 73 patients (58%) underwent immediate tube thoracostomy and 53 patients (42%) were observed. Nine patients (12%) failed observation and required tube thoracostomy for pneumothorax progression or hemothorax. No patient developed a tension pneumothorax or experienced another adverse event related to the absence of tube thoracostomy. Of the observed patients 16 were under positive pressure ventilation, in this group 3 patients (19%) failed observation. There were no differences in mortality, hospital length of stay or intensive care length of stay between the observed and non-observed group.
  
  
  CONCLUSIONS
  Observation is a safe treatment in occult pneumothorax, even in pressure positive ventilated patients.
authors: Servicio de Cirugía General y del Aparato Digestivo, Hospital de Sabadell, Corporació Sanitària Parc Taulí, Institut Universitari Parc Taulí-Universitat Autònoma de Barcelona, Barcelona, España. Electronic address: heura.ivy@gmail.com.
authors: Heura
authors: H
authors: Llaquet Bayo
authors: Servicio de Cirugía General y del Aparato Digestivo, Hospital de Sabadell, Corporació Sanitària Parc Taulí, Institut Universitari Parc Taulí-Universitat Autònoma de Barcelona, Barcelona, España.
authors: Sandra
authors: S
authors: Montmany Vioque
authors: Servicio de Cirugía General y del Aparato Digestivo, Hospital de Sabadell, Corporació Sanitària Parc Taulí, Institut Universitari Parc Taulí-Universitat Autònoma de Barcelona, Barcelona, España.
authors: Pere
authors: P
authors: Rebasa
authors: Servicio de Cirugía General y del Aparato Digestivo, Hospital de Sabadell, Corporació Sanitària Parc Taulí, Institut Universitari Parc Taulí-Universitat Autònoma de Barcelona, Barcelona, España.
authors: Salvador
authors: S
authors: Navarro Soto
mesh_terms: D000072700:Conservative Treatment; D006801:Humans; D011030:Pneumothorax / Q000628:therapy; D011446:Prospective Studies; D012189:Retrospective Studies; D013907:Thoracostomy; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome
keywords: Drenaje pleural (tubo de toracostomía); Multiple trauma; Neumotórax oculto; Occult pneumothorax; Positive-pressure ventilation; Radiografía torácica; Radiography thoracic; Tomografía computarizada; Tomography; Traumatismo múltiple; Tube thoracostomy; Ventilación presión positiva