Complete loss of the operative image requires checking which of the following first?

• A. Check for disconnected power cords, video cables
• B. Check for blown light source bulb
• C. Check for disconnected light cable
• D. Check gas level

Answer: (A)

When the operative image goes away, the first thing to check is the power and signal connections of the video system. The video feed travels from the camera through cables to the light source, video processor, and monitor. If a power cord has come loose or a video cable is unplugged or not firmly seated, the signal is lost immediately, resulting in a blank screen. So quickly verify that all power cords are plugged in and switched on and that every video cable between the camera, light source, processor, and monitor is securely connected and undamaged. If reseating or replacing a loose connection restores the image, that was the culprit and the safest, fastest fix.

The other possibilities—such as a blown light bulb or a disconnected light cable—can cause poor illumination or no light, but they are downstream of the power and signal chain and are less likely to produce a complete loss of image as the first cause. Gas level, while important for maintaining pneumoperitoneum, does not affect the video signal.