Final answer:
Chest tubes are used post-surgery or after trauma to reestablish negative pressure in the chest cavity and inflate the lungs, preventing a condition known as pneumothorax, or collapsed lung. Spontaneous pneumothorax can result from connective tissue defects, and CPR is a crucial emergency procedure providing vital blood flow during cardiac arrest.
Step-by-step explanation:
The use of chest tubes after a surgery or trauma is a medical procedure to reestablish negative pressure within the chest cavity. This is critical because the lungs are attached to the chest wall through liquid adhesion, with negative gauge pressures ranging from -4 to -8 mm Hg during exhalation and inhalation respectively. Without this negative pressure, air can enter the chest cavity and cause the lungs to collapse, known as pneumothorax. Thus, in the presence of traumatic injury or post-surgery, suction may be applied to the chest cavity to prevent or resolve a collapsed lung and reinflate the lungs by reestablishing the necessary negative pressure.Spontaneous pneumothorax can occur due to subtle abnormalities in connective tissue, leading to a collapsed lung. Furthermore, the process of CPR (cardiopulmonary resuscitation), an emergency technique performed when the heart stops, is mentioned to underline the significance of prompt medical intervention in thoracic traumas and complications. Effective chest compressions during CPR can help maintain blood flow, particularly to the brain, mitigating the risk of irreversible neuronal damage.