Final answer:
Using a too narrow BP cuff can result in falsely high blood pressure readings and may cause inaccurate measurement of blood pressure.
Step-by-step explanation:
The effect of using a too narrow BP cuff can result in falsely high blood pressure readings and may cause inaccurate measurement of blood pressure. When the cuff is too narrow, it can compress the artery too much, leading to restricted blood flow and artificially high blood pressure readings. Additionally, a too narrow cuff can cause inaccurate measurement of blood pressure as it may not cover the entire circumference of the arm, leading to inconsistent readings.