One man was driving when he experienced a pneumothorax, characterised by breathlessness and chest pain. Doctors linked it to a 1,000 watt "bass box" fitted to his car to boost the power of his stereo.
It is thought the intense pulses of low-frequency, high-energy sound causes the lung to rupture because air and tissue respond differently to sound. The usual risk factors for collapsed lungs are smoking, illness that has weakened the patient, chronic obstructive lung disease or use of drugs that depress alertness or consciousness, such as sedatives, barbiturates, tranquilizers, or alcohol.
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