Pt has respiratory acidosis (low blood pH) due to his asthma exacerbation. What will the nurse expect to see?

Choice A reason: This is not an adverse effect of ACE inhibitors. Insomnia is a common side effect of stimulant medications, such as caffeine or amphetamine, which increase the activity of the central nervous system and cause difficulty falling or staying asleep.

Choice B reason: This is not an adverse effect of ACE inhibitors. Bradycardia is a slow heart rate, usually below 60 beats per minute. ACE inhibitors do not cause bradycardia, but rather lower the blood pressure by blocking the formation of angiotensin II, a potent vasoconstrictor.

Choice C reason: This is not an adverse effect of ACE inhibitors. Chest pain is a sign of angina or myocardial infarction, which are caused by reduced blood flow to the heart muscle. ACE inhibitors can actually prevent or treat these conditions by improving the blood flow and reducing the workload of the heart.

Choice D reason: This is an adverse effect of ACE inhibitors. Hyperkalemia is a high level of potassium in the blood, which can cause cardiac arrhythmias and muscle weakness. ACE inhibitors can cause hyperkalemia by reducing the secretion of aldosterone, a hormone that regulates the sodium and potassium balance in the body.

Choice A reason: This is not the cause of airway obstruction in asthma. Collapse of the cartilaginous rings in the bronchi is a feature of tracheobronchomalacia, a condition in which the airways are weak and floppy.

Choice B reason: This is not the cause of airway obstruction in asthma. Type II alveolar cell injury and decreased surfactant are associated with acute respiratory distress syndrome (ARDS), a condition in which the alveoli are damaged and filled with fluid.

Choice C reason: This is not the cause of airway obstruction in asthma. Alveolar changes and pulmonary congestion are seen in chronic obstructive pulmonary disease (COPD), a condition in which the alveoli are enlarged and lose their elasticity.

Choice D reason: This is the correct cause of airway obstruction in asthma. Asthma is a chronic inflammatory disorder of the airways, characterized by mucus secretion, bronchoconstriction, and airway edema. These factors reduce the diameter of the airways and increase the resistance to airflow.