What is the trigger for angina pectoris?

A. Actually, people who have the latent form of the disease won't be sick and can't spread it either: This response is accurate because individuals with latent tuberculosis infection (LTBI) do not exhibit symptoms and are not infectious. They carry the bacteria in their body, but it remains dormant and does not spread to others. Only those with active tuberculosis disease are capable of transmitting the infection through respiratory droplets.

B. Many people do manage to fight off the infection, but you are right: they can still spread it by coughing or sneezing: This statement is misleading because it implies that individuals with LTBI can spread the disease, which is not the case. Only those with active TB are contagious.

C. There isn't any real risk of them spreading it, but we would like to vaccinate everyone who's had any contact with it in the past: This response downplays the importance of understanding the difference between latent and active TB and could create confusion. Vaccination for tuberculosis (BCG vaccine) is not routinely given in the United States, and exposure alone does not necessitate vaccination.

D. If someone has been previously exposed to tuberculosis, they are particularly infectious because they are often unaware of the disease: This statement is incorrect, as individuals who have been exposed but have LTBI are not infectious. It is only those with active TB who pose a risk of spreading the infection.

A. Pus in the pleural space: This describes empyema, a condition in which infection leads to pus accumulation in the pleural space. Empyema is commonly associated with bacterial pneumonia, lung abscess, or thoracic surgery and requires drainage and antibiotic therapy. It does not cause the lung collapse seen in pneumothorax.

B. Collapse of small airways: While airway collapse can occur in conditions like bronchiolitis or atelectasis, it is not the defining feature of pneumothorax. Pneumothorax specifically involves air leaking into the pleural space, which disrupts the negative pressure necessary for lung expansion and results in partial or complete lung collapse.

C. Blood in the chest cavity: This describes hemothorax, a condition in which blood accumulates in the pleural space due to trauma, ruptured blood vessels, or certain medical conditions. Unlike pneumothorax, which involves air in the pleural space, hemothorax requires different management, including drainage with a chest tube and possible fluid resuscitation.

D. Air in the pleural space: Pneumothorax occurs when air enters the pleural space, causing a loss of negative pressure and leading to lung collapse. This can result from chest trauma, spontaneous rupture of alveoli, underlying lung disease, or mechanical ventilation. Symptoms may include sudden chest pain, dyspnea, and decreased breath sounds on the affected side.