兩歲五個月幼兒感冒發燒嘔吐吃什麼飯好

鼻腔是相通的，連接中耳與呼吸道的通道是咽鼓管，連接眼部與呼吸道的通道是鼻淚管。咽鼓管開口在咽部，當打哈欠或吞咽時，咽鼓管開放，有少量氣體進入中耳，維持鼓膜內外氣壓的平衡。鼻淚管開口在鼻部，在正常情況下，淚腺分泌的淚液可通過鼻淚管流入鼻腔。由於小兒生長發育尚未成熟，咽鼓管比較短且直，感冒後，炎症極易波及短而直的咽鼓管，進而累及中耳。在門診耳鼻咽喉科就診的中耳炎小患者中，80％以上的是感冒導致的。

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