What Researchers Did
Researchers in Taiwan conducted a retrospective study to identify factors associated with failure during a pressure test for Navy recruits between 2010 and 2015, simulating a depth of 112 feet of seawater at 25 fsw/minute.
What They Found
Out of 3,608 recruits, 435 failed the pressure test, an overall failure rate of 12.06%, with 95% of these failures occurring within a simulated depth of 60 fsw. The most common causes of failure were ear barotrauma (96.56%) and sinus barotrauma (2.65%). Factors significantly linked to a higher incidence of middle ear barotrauma included recent upper respiratory tract infection, allergic rhinitis, and cigarette smoking.
What This Means for Canadian Patients
While this study focuses on military personnel, its findings on risk factors for ear and sinus barotrauma during pressure changes could inform Canadian individuals preparing for activities involving similar pressure exposures, such as diving or aviation. Maintaining good upper respiratory health and avoiding smoking may reduce the risk of barotrauma.
Canadian Relevance
No direct Canadian connection identified.
Study Limitations
The study was retrospective, meaning it looked back at existing data, and the specific causes of failure were not recorded for all participants.