What is the immediate action in case of TACO?

In cases of Transfusion-Associated Circulatory Overload (TACO), the immediate action is to stop the infusion of blood products and administer Lasix (furosemide), a diuretic. TACO occurs when there is an excess volume of blood, often related to rapid transfusion, leading to fluid overload and symptoms such as dyspnea, hypertension, and pulmonary edema.

Stopping the infusion is essential to prevent further fluid accumulation in the circulatory system, which can exacerbate the patient's condition. The administration of Lasix helps to promote diuresis, which assists the body in eliminating excess fluid. This dual approach quickly addresses the underlying issue of fluid overload, alleviating symptoms and preventing further complications.

The other actions like administering IV fluids, continuing to monitor vital signs, or starting an additional IV line may not address the immediate risk posed by TACO and could potentially worsen the patient's situation. Therefore, halting the transfusion and managing the fluid overload with Lasix is the most appropriate immediate response.