![]() The problem only arises if a breath of compressed gas is taken at depth, which will then expand on ascent to more than the lung volume. This does not affect breath-hold skin divers as they bring a lungfull of air with them from the surface, which merely re-expands safely to near its original volume on ascent. The lungs do not sense pain when over-expanded giving the diver little warning to prevent the injury. The compressed gas in the lungs expands as the ambient pressure decreases causing the lungs to over expand and rupture unless the diver breathes out. Pulmonary (lung) pressure damage in scuba divers is usually caused by breath-holding on ascent. If a diver's mask is not equalized during descent the relative negative pressure can produce petechial hemorrhages in the area covered by the mask along with subconjunctival hemorrhages. This can result in pain as well as epistaxis. The sinuses similar to other air filled cavities are susceptible to barotrauma if their openings become obstructed. Mechanical trauma to the inner ear can lead to varying degrees of conductive and sensorineural hearing loss as well as vertigo. Inner ear barotrauma (IEBT) though much less common than MEBT shares a similar mechanism. External ear barotrauma may occur on ascent if high pressure air is trapped in the external auditory canal either by tight fitting SCUBA equipment or ear wax. Middle ear barotrauma (MEBT) is the most common being experienced by between 10% and 30% of divers and is due to insufficient equilibration of the middle ear. ![]() barometric pressure related dental pain, or dental fractures )īarotrauma can affect the external, middle, or inner ear. bone (bone necrosis and temporal lobe injury).skin (when wearing a diving suit which creates an air space). ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |