![]() ![]() Clamping a chest tube in a patient with a pleural air leak may cause a tension pneumothorax. In general, clamping of chest tubes is contraindicated.Except for the exit vent, an airtight system is required to assist in maintaining negative pressure in the pleura and to prevent air entrapment in the pleural space.Absence of fluctuations suggests obstruction of the drainage system from clots, contact with lung tissue, kinks, loss of subatmospheric pressure from fluid-filled dependent loops, or complete reexpansion of the lung. Tidaling, fluctuations that occur with inspiration and expiration, provides a continuous manometer of the pressure changes in the pleural space and indicates overall respiratory effort.B, Emerson disposable chest drain system. #Pleur evac atrium portable#24-2) for patients with large bronchopleural air leaks because they are high-volume, low-resistance, portable suction devices capable of handling high airflow rates.
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