A nurse is collecting data from a client prior to administering atenolol.
For which of the following findings should the nurse withhold the medication?

The correct answer is: C.

Choice A reason: A pH of 7.50 and HCO3 of 31 mm Hg suggest a metabolic alkalosis due to the high bicarbonate level. However, during a panic attack, hyperventilation leads to respiratory alkalosis, not metabolic, due to the excessive exhalation of CO2, which is not consistent with this option.

Choice B reason: A pH of 7.30 and HCO3 of 19 mm Hg indicate a metabolic acidosis due to the low bicarbonate level. This is not typically associated with hyperventilation during a panic attack, which usually causes respiratory alkalosis, characterized by a decrease in CO2 levels and an increase in pH.

Choice C reason: A pH of 7.47 and PaCO2 of 31 mm Hg are indicative of respiratory alkalosis, which is expected during hyperventilation as a result of a panic attack. Hyperventilation causes a decrease in carbon dioxide (PaCO2) levels, leading to an increase in pH. The normal ranges for arterial blood gases are: pH 7.35-7.45, PaCO2 35-45 mm Hg, and HCO3 22-26 mEq/L.

Choice D reason: A pH of 7.32 and PaCO2 of 50 mm Hg suggest respiratory acidosis due to the elevated PaCO2 level. This would be more consistent with hypoventilation, which is not the case during a panic attack where hyperventilation occurs.

Choice A rationale:

Facial flushing. Facial flushing is not typically associated with atelectasis. Atelectasis is the collapse of a portion of the lung, which can lead to decreased oxygenation and respiratory distress but does not directly cause facial flushing. Flushing may be related to other factors such as fever or allergic reactions.

Choice B rationale:

Dry cough. A dry cough can be a common symptom of atelectasis. As the lung tissue collapses and airways become obstructed, it can lead to irritation and a dry, non-productive cough as the body attempts to clear the airway. So, a dry cough is an expected finding in a client with atelectasis.

Choice C rationale:

Decreasing respiratory rate. A decreasing respiratory rate is not typically associated with atelectasis. In fact, atelectasis often leads to an increased respiratory rate as the body tries to compensate for the reduced oxygen exchange. The patient may experience tachypnea (rapid breathing) as a result.

Choice D rationale:

Increasing dyspnea. Increasing dyspnea is a common and expected finding in a client with atelectasis. As lung tissue collapses and oxygen exchange is compromised, the patient will likely experience worsening shortness of breath. This is a concerning symptom and should be closely monitored, as it may indicate a need for intervention to improve lung expansion and oxygenation.