A nurse working in the cardiac icu is caring for client with suspected left sided heart failure. For which clinical manifestation should the nurse assess for?

A) Go to the emergency department:
An immediate trip to the emergency department is generally not required for a peak expiratory flow rate (PEFR) of 82%. The PEFR of 82% indicates that the client’s airflow is reduced, but it is not necessarily an emergency. PEFR readings are typically classified into zones: green (80-100% of personal best), yellow (50-79% of personal best), and red (below 50% of personal best). A reading of 82% is in the yellow zone, which suggests that the client is experiencing some degree of airway obstruction or worsening asthma symptoms

B) Continue to use salmeterol and fluticasone as prescribed:
While salmeterol (a long-acting beta agonist) and fluticasone (a corticosteroid) are important for long-term asthma control, continuing their use without additional intervention is not the most appropriate action when the PEFR is 82%. A PEFR of 82% indicates that the client’s asthma is not well controlled at the moment, and the nurse should recommend additional short-acting relief to help open the airways (e.g., a rescue inhaler like albuterol.

C) Administer an additional rescue dose of Albuterol:
The correct immediate action is to administer a rescue dose of albuterol. Albuterol is a short-acting beta-agonist that helps open the airways quickly during an asthma exacerbation. A PEFR of 82% falls in the yellow zone, suggesting some obstruction but not an emergency situation. In this case, administering an additional rescue dose of albuterol can help improve airflow and bring the PEFR closer to normal.

D) Call the physician:
While it may be necessary to call the physician if the client’s asthma symptoms do not improve after using a rescue inhaler or if there is a significant decline in symptoms, the first immediate action should be to use a rescue medication like albuterol. Calling the physician may be appropriate after assessing the response to the rescue medication, but it is not the first step in managing a PEFR of 82%.

A) Respiratory acidosis:
This condition is characterized by an increase in PaCO2 and a decrease in pH, which is exactly what is seen in these ABG results. The pH of 7.21 indicates acidosis (normal pH range is 7.35–7.45), and the PaCO2 of 50 is elevated (normal PaCO2 range is 35–45 mmHg), indicating that carbon dioxide retention is contributing to the acidosis. In respiratory acidosis, the lungs are unable to adequately expel CO2, leading to an accumulation of CO2 in the blood, which decreases the pH. The HCO3 (bicarbonate) is within normal range (22–28 mEq/L), suggesting that there has not yet been compensation by the kidneys, which would typically increase bicarbonate levels to buffer the acidosis.

B) Metabolic alkalosis:
Metabolic alkalosis is characterized by an elevated pH (above 7.45) and an elevated HCO3 (above 28 mEq/L). In this case, the pH is low (7.21), and the bicarbonate level (HCO3) is normal (26), so metabolic alkalosis is not the correct diagnosis.

C) Respiratory alkalosis:
Respiratory alkalosis occurs when there is decreased PaCO2 (below 35 mmHg) and an elevated pH (above 7.45), typically due to hyperventilation. Since the PaCO2 is elevated (50 mmHg) in this case, it rules out respiratory alkalosis.

D) Metabolic acidosis:
Metabolic acidosis is characterized by a low pH (below 7.35) and a low HCO3 (below 22 mEq/L). While the pH is low in this case, the HCO3 is normal (26 mEq/L), which suggests that the acidosis is not metabolic in origin. Metabolic acidosis would typically show a low bicarbonate level, indicating that the kidneys are not able to compensate effectively.