Decreasing bubble volume
If the temperature remains constant, the volume of a gas is inversely proportional to the absolute pressure.
Boyle’s Law (named after Robert Boyle) is fundamental to hyperbaric and undersea medicine because it explains the pathophysiology of barotrauma.
Divers can develop bubbles in their bodies during a fast surface ascension or when they stay in the deep too long, a condition called decompression sickness, in which nitrogen dissolved in the blood and tissues by high-pressure forms bubbles as pressure decreases.
Bubbles that have been formed in the body can be reduced in size with hyperbaric chamber pressure. Decreasing bubble size is a primary therapy for decompression sickness.
The effects of Boyle’s law can be felt during chamber pressurization and depressurization. During pressurization, a patient’s ears will feel full, similar to the feeling experienced when traveling in an airplane. The pressure in the ears must be relieved during pressurization using recommended methods.