A nursing instructor is teaching a group of nursing students about antihistamines. Which statement by a student indicates an understanding of the mechanism of action of the antihistamines?

Loop diuretics, such as furosemide, are known to cause potassium loss as they increase urine output. A potassium level of 1.5 mEq/L indicates severe hypokalemia (low potassium levels), which can be potentially dangerous and lead to various complications, including cardiac arrhythmias.

Hence, it is important to hold the dose of the loop diuretic and notify the physician so that appropriate interventions can be taken to address the low potassium level, such as prescribing potassium supplementation or adjusting the dosage of the loop diuretic.

A sodium level of 144 is within the normal range (135-145 mEq/L) and does not require immediate action.

A blood pressure of 102/78, although it may indicate hypotension, does not necessarily require holding the dose of the loop diuretic unless it is accompanied by other significant symptoms or clinical concerns.

A calcium level of 9 mg/dL falls within the normal range (8.5-10.5 mg/dL) and does not necessitate holding the loop diuretic dose.

Low oxygen saturation: Low oxygen saturation indicates a potential respiratory compromise and should be addressed promptly to ensure adequate oxygenation and prevent further deterioration.

Previous injection drug user and alcohol misuse: Past injection drug use and alcohol misuse can have significant implications for the patient's health, including increased risk of infections, compromised immune function, and potential withdrawal symptoms. It is crucial for the nurse to be aware of these factors in order to provide appropriate care and support. Has productive cough severe enough to keep her awake: A severe productive cough that disrupts the patient's sleep suggests respiratory distress or possible worsening of the underlying condition. The nurse should assess the patient's respiratory status and implement interventions to alleviate the cough and improve rest.

Elevated temperature, pulse, and respiratory rate: An elevation in vital signs, including temperature, pulse, and respiratory rate, can indicate an infectious or inflammatory process. This warrants further assessment and intervention to manage the underlying condition. Diagnosis pneumonia: The diagnosis of pneumonia indicates a respiratory infection that requires close monitoring and appropriate treatment. The nurse should assess the patient's respiratory status, administer prescribed medications, and implement respiratory hygiene measures.

The following options are not immediate concerns or relevant assessment information:

Appointment the next day: While follow-up appointments are important, they do not require immediate attention upon receiving a hand-off report.

Marital status: Marital status is not typically an immediate concern for the nurse's assessment and care planning.

Daughter's name: The patient's family member's name is not an immediate concern or relevant assessment information for the nurse's immediate care.

Fever is present: While a fever is a symptom of an underlying condition, it is not the most critical concern.