Expiratory apnea
Expiratory apnea is a voluntary condition performed by a patient during a doctor's examination. By breathing out and then holding one's breath, it gets easier for the doctor to perform an auscultation of the heart with a stethoscope.
See also
This article is issued from Wikipedia - version of the 1/8/2013. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.