Which of the following is not a desired characteristic of a suction device?

A suction device is an essential piece of equipment in emergency medical situations for clearing the airway of obstructions such as blood, vomit, or secretions. The ideal characteristics of such a device typically include portability, effectiveness in suction strength, versatility in power options, and the ability to integrate with other equipment.

Utilizing a portable oxygen cylinder to power a suction device is not a desired characteristic. While it might seem convenient, this reliance on an oxygen source can limit the device's versatility and independence. Unlike battery-powered or hand-powered devices, which can operate regardless of the oxygen supply status, a suction device that requires an oxygen cylinder could potentially become unusable if the oxygen supply runs out. This dependency not only complicates logistics but also increases the risk of failure during critical moments.

In contrast, other characteristics mentioned contribute positively to the functionality and accessibility of the suction device in various emergency scenarios. Portability ensures that it can be easily transported alongside other airway equipment, while sufficient suction capability is essential for effective clearance of potentially life-threatening obstructions. Power options that include both hand or battery capability enhance reliability in situations where electricity or gas sources are not available.