Questions: What device is MOST likely to help you visualize veins when starting a peripheral IV? Pulse oximetry Pen light Vein illuminator Doppler

The answer is the third one: Vein illuminator.

Explanation for each option:

1. Pulse oximetry: This device is used to measure the oxygen saturation level in the blood and pulse rate. It does not help in visualizing veins.

2. Pen light: A pen light is typically used for examining the eyes, throat, or other areas where focused light is needed. It is not designed to visualize veins.

3. Vein illuminator: This device is specifically designed to help healthcare professionals visualize veins beneath the skin. It uses near-infrared light to highlight veins, making it easier to locate them for procedures like starting a peripheral IV.

4. Doppler: A Doppler device is used to measure blood flow and detect blood flow abnormalities. While it can help locate veins by detecting blood flow, it is not primarily used for visualizing veins in the way a vein illuminator is.

In summary, the vein illuminator is the most suitable device for visualizing veins when starting a peripheral IV.