Aviat Space Envir Md
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A device was constructed which allowed subatomospheric pressures of up to -50 mm Hg to be applied to the neck, or to the head plus neck, of volunteer subjects riding on the USAFSAM centrifuge. Breathing pressures were always atmospheric. ⋯ Neck suction of -50 mm Hg induced less bradycardia when applied at +3 Gz than under 1-G conditions. These results were discussed in relation to intraocular tension, baroreceptor responsiveness, and jugular venous siphon effect.
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Twenty years of treatment records were searched for cases of serious decompression sickness (DCS). Spinal cord DCS was the most common presentation. ⋯ Using RN 61 (USN 5) to treat serious decompression sickness resulted in a high post-treatment relapse rate. Other inappropriate practices such as in-water air treatment and nontreatment of spontaneously recovering cases resulted in a high incidence of deterioration or relapse.
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Aviat Space Envir Md · Mar 1987
Historical ArticleReported in-flight incapacitation: the early birds of 1911.
Numerous fatal accidents marred the early years of aviation, but not until 1911 was the first accident attributed to inflight incapacitation of the pilot. Two such accidents occurred in 1911 and were reported due to medical causes. ⋯ We believe them to have been caused by pilot error, and not by medical causes. So the first accident due to inflight incapacitation of the aircrew for medical reasons still remains unknown.
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Aviat Space Envir Md · Feb 1987
Case ReportsCases from the aerospace medicine residents' teaching file. Case #16. A student pilot with an avulsion fracture of C5.
A student pilot presented to the emergency room with neck pain after having received a blow to the back of the head during participation in a sports event. The clinical presentation, diagnosis, and aeromedical disposition of this patient are discussed. A review of radiologic findings in cervical fractures is also presented.