What is the priority assessment for a nurse administering a high-dose diuretic to a client?

The priority assessment for a nurse administering a high-dose diuretic to a client is electrolyte levels. Diuretics increase the excretion of water and electrolytes through the kidneys, which can lead to significant imbalances in important electrolytes such as potassium, sodium, and magnesium. Monitoring electrolyte levels is essential because imbalances can result in serious complications, including arrhythmias, muscle weakness, and metabolic disturbances.

While urine output is also important to assess, it serves more as a secondary indicator of the diuretic's effectiveness and the client’s fluid status rather than a direct assessment of potential complications from electrolyte disturbances. Blood glucose levels may be relevant in some clinical contexts but are not a primary concern related to the immediate effects of diuretic therapy. Fluid intake is important for overall management but does not directly address the immediate risks associated with high-dose diuretic use. Thus, focusing on electrolyte levels allows for timely intervention to prevent significant morbidity.