Certified Hyperbaric Technologist Practice Test

Flying within 4 hours of finishing your last dive is an action that does not help minimize the risk of decompression sickness (DCS). After completing a dive, particularly deeper dives or dives that involve multiple levels of nitrogen saturation in the body, it is crucial to allow ample surface time for the body to off-gas the absorbed nitrogen. The commonly accepted guideline is to wait at least 24 hours before flying after a series of dives, especially if those dives are more than a single shallow dive, to minimize the risk of DCS. In contrast, staying hydrated, ascending slowly, and monitoring dive tables are all actions that significantly contribute to reducing the risk of DCS. Proper hydration helps maintain blood circulation and may assist in nitrogen off-gassing. Slow ascents and safety stops allow for gradual release of nitrogen from the tissues, lowering the likelihood of bubble formation which can lead to DCS. Accurate monitoring of dive tables ensures that divers remain aware of their diving limits and helps track the appropriate ascent rates and stop requirements, thus avoiding potential DCS scenarios.