A nurse is reviewing the arterial blood gas values for a client. The nurse should recognize that the values indicate which of the following acid-base imbalances?

The values are:

• pH: 7.56
• PaCO2: 55 mmHg
• HCO3: 33 mEq/L

Normal ranges:

• pH: 7.35-7.45
• PaCO2: 35-45 mmHg
• HCO3: 22-28 mEq/L

Choice A Reason:

Hyperkalosis is incorrect. Hyperkalosis refers to an elevated level of potassium in the blood, which is not directly related to the pH level. While hyperkalemia can occur in acidosis, it is not the primary condition indicated by a low pH

Choice B Reason:

Hyponatremia is incorrect. Hyponatremia refers to low sodium levels in the blood. It does not directly affect the pH level and is not indicated by the pH value provided.

Choice C Reason:

Acidosis is correct. The normal pH range for arterial blood is 7.35 to 7.45. A pH of 7.10 is below this range, indicating that the blood is too acidic. This condition is known as acidosis.

Choice D Reason:

Alkalosis is incorrect. Alkalosis refers to a condition where the blood pH is higher than the normal range, indicating that the blood is too basic. A pH of 7.10 is too low, not too high, and therefore indicates acidosis.

Choice A Reason:

Cardiac monitoring involves the continuous observation of the heart’s electrical activity, typically using an electrocardiogram (ECG). While cardiac monitoring is essential for detecting arrhythmias and other cardiac events, it does not directly measure fluid retention. Fluid retention in CHF patients can lead to symptoms such as edema and weight gain, which are not directly assessed through cardiac monitoring.

Choice B Reason:

Daily weight measurement is a reliable and practical method for assessing fluid retention in clients with congestive heart failure. Fluid retention leads to an increase in body weight, and monitoring daily weight changes can help detect fluid accumulation early. A sudden weight gain of more than 2-3 pounds in a day or 5 pounds in a week is a significant indicator of fluid retention and worsening heart failure. This method is non-invasive, easy to perform, and provides valuable information for managing CHF.

Choice C Reason:

Blood pressure monitoring is crucial for managing clients with CHF, as hypertension can exacerbate heart failure. However, blood pressure readings alone do not provide a direct measure of fluid retention. While fluid overload can affect blood pressure, it is not a specific or sensitive indicator of fluid status. Blood pressure monitoring should be used in conjunction with other assessment tools to manage CHF effectively.

Choice D Reason:

Urine output measurement is an important parameter for assessing kidney function and fluid balance. In clients with CHF, reduced urine output can indicate worsening heart failure and fluid retention. However, urine output alone may not provide a complete picture of fluid status, especially if the client is on diuretic therapy. Daily weight measurement remains a more direct and reliable method for assessing fluid retention in CHF patients.