What is the consequence of using a BP cuff that is too large?

Using a blood pressure cuff that is too large can result in a falsely low blood pressure reading. This phenomenon occurs because the larger cuff has a greater surface area, which can distribute pressure over a wider area of the arm. As a result, there is less pressure applied to the arteries, leading to an underestimate of the actual blood pressure. Accurate blood pressure assessment is crucial in patients undergoing hemodialysis, as it can influence treatment decisions, fluid management, and overall patient monitoring. Proper cuff sizing is essential to ensure that measurements reflect the true hemodynamic status of the patient.