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Acoustic shock is the set of symptoms a person may experience after hearing an unexpected, loud sound. The loud sound, called an acoustic incident, can be caused by feedback oscillation, fax tones, or signalling tones. Telemarketers and call centre employees are thought to be most at risk. [1]
The model details how symptoms may be initiated by tensor tympani muscle damage or overload due to acoustic shock or trauma. Hypercontraction or hyperactivity of the muscle may cause an "ATP energy crisis." The muscle is then forced to create energy without sufficient oxygen, which results in the release of lactic acid into the middle ear space.
Tonic tensor tympani syndrome is a disease of the tensor tympani muscle, described by Klochoff et al. in 1971. [ 1 ] [ 2 ] The tensor tympani muscle is one of the two middle ear muscles that support the three middle ear bones, called the ossicles .
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An 8-year-old Colorado girl's suspected food allergy turned out to be a life-threatening diagnosis that is often linked to the use of tampons.
Toxic shock syndrome (TSS) is a condition caused by bacterial toxins. [1] Symptoms may include fever , rash , skin peeling , and low blood pressure . [ 1 ] There may also be symptoms related to the specific underlying infection such as mastitis , osteomyelitis , necrotising fasciitis , or pneumonia .
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Examples of the onset and recovery of the acoustic reflex measured with a laser Doppler velocimetry system. Thus, the reflex most likely developed to protect early humans from loud thunder claps which do not happen in a split second. [7] [8] The reflex works by contracting the muscles of the middle ear, the tensor tympani and the stapedial muscle.