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Asymptomatic microscopic hematuria in pilots.
Aviation, Space, and Environmental Medicine
|May 1, 1987
Summary
Air duty does not appear to cause microscopic hematuria in pilots. Studies found no increased incidence or prevalence of blood in urine among fighter, helicopter, or transport pilots.
Area of Science:
- Aerospace Medicine
- Urology
Background:
- Microscopic hematuria, defined as blood in urine detectable only by microscope, is a common finding.
- Its association with occupational exposures, such as air duty, requires investigation.
Purpose of the Study:
- To determine if air duty is associated with the cumulative incidence or point prevalence of asymptomatic microscopic hematuria in pilots.
Main Methods:
- Evaluated cumulative incidence of recurrent microscopic hematuria over 12-15 years in fighter, helicopter, and transport pilots.
- Assessed point prevalence of microscopic hematuria in pilots who flew the day prior to urinalysis, comparing them to a control group.
Main Results:
- Cumulative incidence of recurrent microscopic hematuria was 11.3% in fighter pilots, 10.0% in helicopter pilots, and 13.8% in transport pilots.
- Point prevalence of microscopic hematuria was not higher in pilots who flew recently compared to controls.
Conclusions:
- Air duty is not causally linked to chronic or acute microscopic hematuria in pilots.
- Occupational flight stress does not appear to induce microscopic hematuria.