What is the likely cause of pericarditis in a young patient?

Correct Answer: D

Rationale: In younger patients, pericarditis is typically caused by an infection commonly triggered by viruses like the Coxsackie virus, streptococcus, staphylococcus, or Haemophilus influenzae. Infectious processes are the leading cause of pericarditis in younger individuals. Heart failure, Acute MI, and Hypertension are not common causes of pericarditis in young patients. In older adults, acute myocardial infarction (MI) is a more common cause of pericarditis.

Correct Answer: C

Rationale: In the management of acute bronchitis, antibiotics are not typically prescribed unless there is a confirmed bacterial infection. Acute bronchitis is usually caused by a virus, so antibiotics are not effective in treating it. The primary focus is on symptom management and supportive care. Increased fluid intake helps keep the airway moist and liquefy secretions, aiding in their removal. Cough medications can help relieve cough symptoms. The use of a vaporizer can help moisten the air, making breathing more comfortable for the patient. It is crucial to differentiate between viral and bacterial causes of respiratory infections to avoid unnecessary antibiotic use and prevent antibiotic resistance. Therefore, the correct answer is 'Antibiotics.' Increased fluid intake, cough medications, and the use of a vaporizer are commonly recommended for managing symptoms and improving comfort in patients with acute bronchitis.

Correct Answer: A

Rationale: Rapid bronchospasms are a symptom of an early-phase reaction in an asthmatic patient. During the early phase, bronchospasms occur due to immediate hypersensitivity reactions. Inflammatory epithelial lesions, increased secretions, and increased mucosal edema are typically seen in late-phase reactions as part of the inflammatory response that occurs later. Therefore, rapid bronchospasms are most indicative of an early-phase reaction.

Correct Answer: C

Rationale: Clinical manifestations of asthma include increased use of accessory muscles, increased expiratory time, increased peak expiratory flow, and decreased oxygen saturation. Choice A, 'Decreased expiratory time,' is incorrect because asthma typically presents with increased expiratory time due to airway obstruction. Choice B, 'Increased peak expiratory flow,' is incorrect as asthma commonly leads to decreased peak expiratory flow due to airway constriction. Choice D, 'Increased oxygen saturation,' is incorrect because asthma exacerbations often result in decreased oxygen saturation levels.

Correct Answer: A

Rationale: In patients with advanced chronic respiratory failure, such as those with chronic obstructive pulmonary disease (COPD), the respiratory drive shifts from being primarily stimulated by high levels of carbon dioxide (hypercapnia) to being driven by low oxygen levels (hypoxemia). This shift is due to the body's adaptation to chronic respiratory acidosis and hypoxemia. As a result, hypoxemia becomes the primary stimulus for respiration in these patients. Hypocapnia, a low level of carbon dioxide, is not a common driver of respiration in patients with advanced chronic respiratory failure. Therefore, the correct answer is hypoxemia.