True or False: The Haldanean decompression model helps prevent decompression sickness by maintaining the pressure gradient within acceptable limits.

The Haldanean decompression model is designed to help prevent decompression sickness (DCS) by providing guidelines for safe ascent rates and allowing sufficient time for nitrogen to off-gas from the body as pressure decreases. This model acknowledges that divers absorb inert gases, primarily nitrogen, under pressure, and that controlled ascent can mitigate the risk of bubbles forming in the tissues or bloodstream, which is the major cause of DCS.

Maintaining the pressure gradient within acceptable limits is essential because if a diver ascends too quickly, the nitrogen that was absorbed could form bubbles as the surrounding pressure decreases too rapidly for the body to release the gas. The Haldanean model factors in various variables, including the time spent at depth and the rate of ascent, to create a comprehensive set of dive tables that divers can use to plan their ascents safely.

Thus, the statement aligns with how the Haldanean model operates to enhance diver safety during and after dives, ensuring a progressive decrease in pressure to allow the body to adapt appropriately.