Venous hum is accentuated by deep inspiration in most patients and may be obliterated by the Valsalva maneuver or by pressure on the internal jugular vein .

多数病人在深吸气时 静脉 嗡 鸣 音明显，用瓦尔萨尔瓦手法或按压颈内静脉即或消除。