“…According to Advanced Trauma Life Support guidelines, tension pneumothorax is a clinical diagnosis reflecting air under pressure in the affected pleural space and is characterized by some or all of the following signs and symptoms: chest pain, air, hunger, tachypnea, respiratory distress, tachycardia, hypotension, tracheal deviation away from the side of the injury, unilateral absence of breath sounds, elevated hemothorax without respiratory movement, neck vein distention, and cyanosis. Although there is no definition of tension hemothorax, findings such as chest pain, tachypnea, hypotension, and neck vein distention may indicate tamponade or tension physiology [2,3]. Although the mediastinal shift appears moderate in Figure 3B, it is possible that tension hemothorax was further advanced during preparation for thoracic drainage.…”