The nurse is caring for a patient who is comatose and on a ventilator.When she enters the room,she notices that the patient's trachea has shifted toward the left side of the patient's neck,and he has become tachycardic.She assesses the patient's blood pressure and notes that it is 84/38.The nurse calls for help,knowing that the patient has a:

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A tension pneumothorax occurs from rupture in the pleura when air accumulates in the pleural space more rapidly than it is removed.If left untreated,the lung on the affected side collapses,and the mediastinum and trachea shift to the opposite (unaffected)side.The patient has sudden chest pain,a fall in blood pressure,and tachycardia; and cardiopulmonary arrest can occur.Patients with chest trauma,fractured ribs,and invasive thoracic bedside procedures (such as insertion of central lines),and those on high-pressure mechanical ventilation are at risk for tension pneumothorax.
A hemothorax is a collapse of the lung caused by an accumulation of blood and fluid in the pleural cavity between the chest wall and the lung,usually as a result of trauma.Nothing in this scenario would suggest myocardial infarction.

The Nurse Is Caring for a Patient Who Is Comatose