A nurse assesses a diabetic client who is admitted with an acid-base imbalance. The client's arterial blood gas values are pH 7.39, PaCO2 27 mm Hg, and HCO3 19 mEq/L. Which sign or symptom does the nurse identify as an example of the client's compensatory mechanisms?

A. Assessing the airway is always a priority in any client care situation, especially when there are respiratory abnormalities such as respiratory acidosis. Ensuring a patent airway is crucial to maintain adequate oxygenation and ventilation.
B. Bronchodilators are typically used to treat conditions such as bronchoconstriction in asthma or chronic obstructive pulmonary disease (COPD). However, in the context of respiratory acidosis with an elevated PaCO2, the primary issue is not bronchoconstriction but rather impaired gas exchange due to inadequate ventilation.
C. Mucolytics are medications used to thin mucus and facilitate its removal from the respiratory tract. While they can be beneficial in conditions with thick secretions, they do not address the underlying cause of respiratory acidosis, which is inadequate CO2 elimination.
D. Providing oxygen can help improve oxygenation in clients with respiratory acidosis. However, it is important to note that oxygen alone will not correct the underlying cause of respiratory acidosis (elevated PaCO2). Oxygen therapy is supportive and helps to improve oxygen delivery to tissues while other interventions are addressed.

A. Fever can cause tachycardia (increased heart rate) rather than bradycardia. It is not typically associated with slowing of the heart rate unless there are other complicating factors such as severe infection or medication side effects.
B. Significant blood loss can lead to hypovolemia (low blood volume), which can result in bradycardia as a compensatory mechanism to maintain blood pressure. However, the blood pressure in this scenario is

normal (120/80), which makes severe hemorrhage less likely unless compensated by fluid resuscitation or other factors.
C. COPD can cause chronic hypoxia and respiratory acidosis, which can lead to chronic respiratory compensation and potentially bradycardia. However, COPD alone is less likely to cause bradycardia in the absence of severe exacerbation or other complicating factors.
D. Calcium channel blockers (CCBs) are medications commonly prescribed for conditions such as hypertension, angina, and arrhythmias. They work by blocking calcium channels in cardiac and smooth muscle cells, resulting in decreased heart rate and vasodilation. Bradycardia is a known side effect of CCBs, especially when taken in excess or in combination with other medications that affect heart rate.