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CHAPTER 57: Massive Hemoptysis  509


                    and  enters  the   second chamber,  often  called  the  water  seal  chamber,     • Davies HE, Davies R, Davies C, et al. Management of pleural infec-
                    below  the  water  level  and  bubbles  through  the  water  seal  preventing   tion in adults: British Thoracic Society Pleural Disease Guideline
                    return of air to the patient’s thoracic cavity. The air enters the third   2010. Thorax. 2010;65(suppl 2):ii41-ii53.
                    chamber which is connected to wall suction. The height of water in the
                    suction chamber indicates the amount of suction applied and is typically     • Davies HE, Mishra EK, Kahan BC, et al. Effect of an indwelling
                    between −10 and −30 mm Hg, but often varies based on the indication   pleural catheter vs chest tube and talc pleurodesis for relieving
                    for chest tube insertion. An atmospheric vent prevents the application of     dyspnea in patients with malignant pleural effusion: the TIME2 ran-
                    excessive suction. While different collection systems may vary, this basic   domized controlled trial. JAMA. June 13, 2012;307(22):2383-2389.
                    design is common to most available models. There is some evidence to     • Koenig SJ, Narasimhan M, Mayo PH. Thoracic ultrasonography for
                    guide the level of suction that should be used. For postoperative and   the pulmonary specialist. Chest. November 2011;140(5):1332-1341.
                    trauma patients there is evidence that suction at −20 mm Hg is not supe-    • MacDuff A, Arnold A, Harvey J. Management of spontaneous
                    rior to water seal at resolving pneumothorax or shortening chest tube   pneumothorax: British Thoracic Society Pleural Disease Guideline
                    duration. 48,49  There is less evidence to guide the application of suction   2010. Thorax. August 2010;65(suppl 2):ii18-ii31.
                    in medical patients. In general, the lowest level of suction, including no     • Marshall MB, Deeb ME, Bleier JI, et al. Suction vs water seal after
                    suction, should be used to fully expand the lung and resolve a pneumo-  pulmonary resection: a randomized prospective study.  Chest.
                    thorax. Chest imaging, typically CXR or ultrasound, should be used to   2002;121:831-835.
                    determine the efficacy of lung expansion at a particular suction level. If     • Oxman DA, Issa NC, Marty FM, et al. Postoperative antibacte-
                    suction is applied to assist with pleural fluid drainage, then −20 mm Hg   rial prophylaxis for the prevention of infectious complications
                    is often applied initially with use of chest imaging studies to determine   associated with tube thoracostomy in patients undergoing elective
                    the adequacy of pleural fluid drainage.                 general thoracic surgery: a double-blind, placebo-controlled, ran-
                     The amount of air or fluid being drained by a chest tube should be   domized trial. JAMA Surg. May 2013;148(5):440-446.
                    assessed frequently in order to determine the earliest time it can be safely
                    removed. An air leak can be quantified by the number of columns that     • Rahman NM, Maskell NA, West A, et al. Intrapleural use of tissue
                    air bubbles through the water seal chamber (typically there are 7 side-  plasminogen activator and DNase in pleural infection. N Engl J
                    by-side columns). In addition, the physician should notice whether the   Med. August 11, 2011;365(6):518-526.
                    air leak occurs during forced exhalation or normal exhalation, which     • Roberts ME, Neville E, Berrisford RG, Antunes G, Ali NJ. Management
                    suggests a small alveolar-pleural fistula. Alternatively, an air leak that   of a malignant pleural effusion: British Thoracic Society Pleural
                    occurs during inspiration or continuously suggests a larger defect in   Disease Guideline 2010. Thorax. August 2010;65(suppl 2):ii32-ii40.
                    the pleura and may indicate that a bronchopleural fistula is present. In     • Younes RN, Gross JL, Aguir S, et al. When to remove a chest tube?
                    general, chest tubes should not be removed or clamped if an air leak   A randomized study with subsequent prospective consecutive
                    persists as this suggests that air may accumulate in the pleural space,   validation. J Am Coll Surg. 2002;195:658-662.
                    potentially leading to tension physiology and cardiac compromise
                    (ie, reduced venous return and cardiac output).
                     When placed for pneumothorax, chest tubes should be removed when
                    the lung  is fully expanded and there  is no evidence  of continued air  REFERENCES
                    leak. Some physicians advocate a trial of chest tube clamping for several
                    hours followed by a repeat chest imaging study.  Reaccumulation of the   Complete references available online at www.mhprofessional.com/hall
                                                      50
                    pneumothorax during the clamping trial suggests a small air leak is still
                    present. However, there are limited data to guide the use of clamping in
                    medical patients and the surgical literature is conflicting. 29,51,52  Similarly
                    there is some controversy as to whether a patient should be liberated   CHAPTER  Massive Hemoptysis
                    from mechanical ventilation before a chest tube, initially placed for
                    should  drain  less  than  100  to  300 mL/d  before  chest  tube  removal  is  57  Alexander Benson
                    pneumothorax, is removed. Chest tubes placed for pleural effusion
                                                                                      Richard K. Albert
                    contemplated. There is some evidence that a threshold of <200 mL/d
                    in the postoperative setting is similar to lower threshold volumes with
                    respect to  hospitalization time or incidence of significant pleural fluid
                    reaccumulation. 53                                     KEY POINTS
                     Petroleum gauze dressing, scissors, and several 4-by-4 in bandages
                    should be assembled when a chest tube is ready to be removed. The     • Ensure proper oxygenation and secure the patient’s airway if necessary.
                    sutures wrapped around the chest tube should be cut and the patient     • Correct coagulation abnormalities.
                    should breath-hold during chest tube removal. The clinician removing     •  Localize bleeding with bronchoscopy (unstable patient) or CT scan
                    the tube should pull the tube in one motion with immediate closure   (stable patient) and position the bleeding site in a dependent position.
                    of the skin incision by tightening and then tying both ends of the     •  In unstable, hypoxemic patients consider urgent bronchoscopy for suc-
                      mattress suture. This motion should close the skin and prevent air entry
                    up the chest tube tract and into the pleural space. Finally, petroleum     tioning, endobronchial hemostatic therapy and balloon tamponade.
                    gauze dressing should be placed over the sutures and covered with dry     •  Interventional radiology-guided bronchial artery embolization is
                    bandages.                                               effective and should be performed after initial stabilization.
                                                                             • Surgery is required in rare circumstances.
                     KEY REFERENCES
                        • Alphonso N, Tan C, Utley M, et al. A prospective randomized   INTRODUCTION
                       controlled trial of suction versus non-suction to the under-water
                       seal drains following lung resection.  Eur J Cardiothorac Surg.   Hemoptysis, or the expectoration of blood, can result from a wide variety
                       2005;27:391-394.                                   of illnesses (Table 57-1). The prevalence of these different etiologies
                                                                          depends on the characteristics of the specific patient population studied.








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