American Medical Technologist (AMT) Practice Exam

For which type of patient is a butterfly needle least likely to be used?

1. A patient with resilient and bouncy veins

2. A pediatric patient

3. An elderly patient with fragile veins

4. A patient undergoing frequent blood draws

The correct answer is: A patient with resilient and bouncy veins

The use of a butterfly needle, also known as a winged infusion set, is specifically designed for venipuncture in situations where the veins may be difficult to access or when precise control is needed. This type of needle is often employed for patients such as pediatric patients or elderly patients with fragile veins, where traditional needles may cause issues, or in cases requiring repeat blood draws to minimize discomfort and vascular trauma. In the case of a patient with resilient and bouncy veins, these characteristics generally indicate good venous access where traditional larger-gauge needles can be used effectively and safely. Therefore, a butterfly needle is least likely to be necessary in this situation, as the more stable and healthier veins do not present the same challenges that butterfly needles are designed to address.