A patient with atrial fibrillation and a serum potassium level of 3.0 mEq/L takes digoxin (Lanoxin), ASA (aspirin), KCL (potassium chloride), and warfarin (Coumadin) daily. The patient reports visual disturbances. The nurse suspects problems with which medication?

Choice B rationale:

The patient's tachycardia, pale, cool skin, and decreased urine output are signs of the body's natural compensatory mechanisms in response to fluid volume deficit. When the body

experiences a decrease in fluid volume, it tries to compensate by increasing heart rate (tachycardia) to maintain blood flow to vital organs and constricting blood vessels to preserve fluid and maintain blood pressure. Pale, cool skin is a result of vasoconstriction, and decreased urine output is a way the body conserves water during dehydration.

Choice A rationale:

Effects of rapidly infused intravenous fluids are not the cause of the patient's current findings. In fact, the nurse's notes indicate that the IV fluid therapy (0.9% sodium chloride) was initiated at 125 mL/hr, which is a relatively standard and cautious rate. Rapidly infused fluids could potentially cause fluid overload, but that is not the situation here.

Choice C rationale:

Pharmacological effects of a diuretic are not relevant to this patient's presentation. There is no mention of diuretic use in the nurse's notes, and the symptoms presented are more consistent with fluid volume deficit and dehydration rather than diuretic use.

Choice D rationale:

Cardiac failure is not the correct answer, as there is no indication of heart failure in the patient's presentation or nurse's notes. The symptoms and findings described are more indicative of fluid volume deficit, which is not synonymous with cardiac failure.

Choice A rationale:

Fluid volume overload is an excess of fluid in the intravascular and/or interstitial spaces. One of the hallmark signs of fluid volume overload is distended neck veins, which indicates increased venous pressure due to the accumulation of fluid. The neck veins become more visible and prominent, especially when the patient is in a semi-Fowler's position.

Choice B rationale:

Poor skin turgor is a sign of dehydration, not fluid volume overload. It is characterized by the skin's inability to return to its normal position after being gently pinched. In fluid volume overload, the skin may become edematous and puffy, but it does not exhibit poor turgor.

Choice C rationale:

Concentrated hemoglobin and hematocrit levels are seen in conditions of dehydration or hemoconcentration, not in fluid volume overload. In fluid volume overload, there is excess fluid, which may lead to dilutional effects, resulting in decreased concentration of blood components.

Choice D rationale:

Decreased urine output is associated with fluid volume deficit (dehydration) rather than fluid volume overload. In fluid volume overload, there is often an increase in urine output as the body tries to eliminate the excess fluid.