A nurse is caring for a client who has respiratory acidosis. Which of the following pH levels should the nurse expect?

A. Moist mucous membranes: Moist mucous membranes are typically a sign of good hydration and are not usually associated with end-of-life stages. In fact, patients nearing the end of life often experience dryness of the mouth and mucous membranes due to decreased fluid intake and certain medications. This dryness can lead to discomfort and difficulties in swallowing or speaking, which is why oral care is an important part of end-of-life care.

B. Irregular respirations: This is correct. As the body’s systems start to shut down in the final stages of life, irregular respirations, including periods of rapid breathing and pauses (Cheyne-Stokes respirations), can be a common symptom. This happens because the body can no longer effectively remove carbon dioxide, and the automatic process of breathing becomes less coordinated. This can be distressing to witness, but it’s usually not uncomfortable for the patient.

C. Tachycardia: While some patients may experience changes in heart rate, tachycardia is not typically a consistent finding in patients at the end of life. As the body weakens, the heart has to work harder to pump blood, which can sometimes lead to a faster heart rate. However, as the end of life approaches, the heart rate often slows down, and blood pressure decreases.

D. Hypertension: Hypertension, or high blood pressure, is not typically a symptom associated with end-of-life care. In the final stages of life, the body’s systems begin to slow down, and blood pressure often decreases. This is due to a combination of factors, including a slower heart rate and a decrease in the body’s ability to regulate blood pressure. It’s also worth noting that pain, anxiety, and certain medications can temporarily increase blood pressure, even in the end-of-life stages.

Answer: C. Respiratory acidosis

Rationale:

A) Metabolic acidosis: This occurs when there is an excess of acid in the body or a loss of bicarbonate, often due to conditions such as renal failure or severe diarrhea. In chronic bronchitis, the primary issue is related to respiratory function rather than metabolic disturbances.

B) Respiratory alkalosis: This condition results from hyperventilation, leading to excessive loss of carbon dioxide. It is unlikely in a client with chronic bronchitis, who typically experiences difficulty in exhaling fully rather than hyperventilating.

C) Respiratory acidosis: In chronic bronchitis, airflow obstruction and reduced gas exchange can lead to carbon dioxide retention, resulting in respiratory acidosis. Symptoms like dyspnea and increased work of breathing support this imbalance, as the body is unable to adequately expel carbon dioxide.

D) Metabolic alkalosis: This imbalance results from excessive bicarbonate or loss of hydrogen ions, often related to prolonged vomiting or diuretics. It is not characteristic of chronic bronchitis, where the primary concern is respiratory function rather than metabolic processes.