A client who has atrial fibrillation is prescribed warfarin therapy.

Which of the following statements by the client indicates an understanding of the medication?

The correct answer is choice C: Increase rate of ventilation.

Choice A rationale:

Decreasing expiratory flow time would not directly address the elevated PaCO2 levels. This intervention is more related to managing expiratory phase issues rather than correcting respiratory acidosis.

Choice B rationale:

Decreasing expiratory pressure might help with certain ventilation issues, but it does not specifically target the elevated PaCO2 and resulting acidosis.

Choice C rationale:

Increasing the rate of ventilation helps to blow off more CO2, thereby reducing PaCO2 levels and correcting the respiratory acidosis indicated by the pH of 7.26 and PaCO2 of 68 mm Hg.

Choice D rationale:

Increasing the ventilator tidal volume could also help reduce PaCO2 by increasing the amount of air exchanged with each breath. However, increasing the rate of ventilation is generally a more immediate and effective intervention for acute respiratory acidosis.

The observation(s) by the nurse that require immediate intervention to reduce the likelihood of harm to this client are:

A. The client’s oxygen saturation level is 85%. This is a sign of hypoxemia, which can lead to tissue hypoxia, organ damage, and cardiac arrest. The nurse should administer oxygen therapy and monitor the client’s respiratory status closely.

C. The client’s heart rate is 110 beats per minute. This is a sign of tachycardia, which can indicate worsening heart failure, dehydration, infection, or anxiety. The nurse should assess the client’s fluid balance, vital signs, and symptoms and report any changes to the physician. The nurse should also administer medications as prescribed to control the heart rate and reduce the cardiac workload.

E. The client’s blood pressure is 160/90 mmHg. This is a sign of hypertension, which can increase the risk of stroke, myocardial infarction, and renal failure. The nurse should administer antihypertensive medications as prescribed and monitor the client’s blood pressure and urine output. The nurse should also educate the client on lifestyle modifications to lower blood pressure, such as reducing salt intake, exercising, and managing stress .

The other observations do not require immediate intervention, but they should be addressed as part of the comprehensive nursing care plan for the client with heart failure and COPD. These include:

B. The client is eating less than half of meals. This can indicate poor appetite, nausea, dyspnea, or fatigue, which can affect the client’s nutritional status and energy level. The nurse should encourage the client to eat small, frequent, and balanced meals that are low in sodium, fat, and cholesterol. The nurse should also provide oral hygiene and offer supplements or enteral feeding if needed .

D. The client is reading a book. This can indicate that the client is coping well with the condition and engaging in leisure activities that promote relaxation and mental health. The nurse should praise the client for this positive behavior and provide emotional support and counseling as needed. The nurse should also teach the client about the signs and symptoms of exacerbation and when to seek medical help .