Which of the following are the most common manifestations of COPD? (Select all that apply.)
 

Choice A Reason:

Respiratory alkalosis is incorrect. Tension pneumothorax typically leads to respiratory distress and hypoxemia rather than respiratory alkalosis. The respiratory alkalosis may occur initially due to hyperventilation in response to hypoxemia but would not be directly related to tracheal deviation.

Choice B Reason:

Increased venous return is incorrect. Tension pneumothorax actually leads to decreased venous return due to compression of the great vessels in the thorax, particularly the superior vena cava and the inferior vena cava. This compression results from the increased pressure within the thorax, which impedes blood flow back to the heart.

Choice C Reason:

Decreased cardiac output is incorrect. Tension pneumothorax can indeed lead to decreased cardiac output due to compression of the heart and the great vessels by the accumulating air in the pleural space. This compression decreases venous return and impairs cardiac function.

Choice D Reason:

Dilated ventricles is incorrect. As mentioned earlier, tension pneumothorax can lead to compression of the heart, including the ventricles. This compression can cause dilatation of the ventricles, particularly the right ventricle, due to increased afterload and decreased venous return.

Choice A Reason:

Bronchopneumonia is incorrect. Bronchopneumonia is characterized by patchy areas of consolidation involving multiple lobules scattered throughout the lungs. It typically results from bronchial obstruction and aspiration of infected material into the smaller airways and alveoli.

Choice B Reason:

Severe pneumonia is incorrect. "Severe pneumonia" is a broad term that can refer to pneumonia with various degrees of severity. It does not specifically describe the pattern of consolidation involving the entire lobe of the lung.

Choice C Reason:

Empyema is incorrect. Empyema refers to the accumulation of pus in the pleural cavity, often as a complication of pneumonia. It does not describe the pattern of consolidation within the lung tissue.

Choice D Reason:

Lobar pneumonia is correct. Lobar pneumonia is characterized by consolidation involving an entire lobe or lobes of the lung. It typically results from infection by a single pathogen, such as Streptococcus pneumoniae, which leads to inflammation and consolidation of an entire lobe of the lung.