A client receiving mechanical ventilation has a pH of 7.26, PaCO2 of 68 mm Hg, and a PaO2 of 92 mm Hg. Which intervention should the nurse implement?

Choice A rationale:

A pH level of 7.35 to 7.45 and HCO3- level of 22 to 26 mEq/L indicate a resolution of ketoacidosis. The normal pH range for the body is 7.35 to 7.45, and a return to this range indicates that the body’s acid-base balance has been restored. The bicarbonate (HCO3-) level is a measure of the metabolic component of the body’s acid-base balance, and the normal range is 22 to 26 mEq/L. A return to this range indicates that the metabolic acidosis caused by the ketoacidosis has been resolved.

Choice B rationale:

A pH level of 7.25 to 7.35 and HCO3- level of 18 to 22 mEq/L would indicate that the client is still in a state of mild acidosis, as the pH is below the normal range and the bicarbonate level is also slightly low, indicating a metabolic acidosis.

Choice C rationale:

A pH level of 7.15 to 7.25 and HCO3- level of 14 to 18 mEq/L would indicate a moderate acidosis. Both the pH and bicarbonate levels are significantly below their normal ranges, indicating a significant disruption in the body’s acid-base balance.

Choice D rationale:

A pH level of 7.05 to 7.15 and HCO3- level of 10 to 14 mEq/L would indicate severe acidosis, which would be life-threatening if not corrected. Both the pH and bicarbonate levels are far below their normal ranges, indicating a severe disruption in the body’s acid-base balance. In conclusion, choice A is correct because it represents values within the normal ranges for both pH and bicarbonate, indicating a resolution of ketoacidosis.

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 .