Nasal pinch

The method of pinching nose and closing breath is also called Valsava. It is through the patient's fingers to compress the two nasal wings to the nasal septum, close the mouth and exhale at the same time, the air will enter the eustachian tube without other channels to evacuate. At this time, the tympanic membrane suddenly bulges outward, and the examiner listens from the auscultation tube. The sound of vibration to the eardrum.

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