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试述急性额窦炎周期性头痛形成的机制。

问答题
2021-12-29 08:50
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正确答案

晚间睡眠头部呈卧位使窦内脓性物难以排除而积蓄,晨起头部呈直立位,使脓性物积留于窦底和窦口,借重力和微弱的纤毛运动逐渐排出,其过程缓慢并使窦内产生负压甚至真空。因此,脓性物的刺激加之"真空性"头痛致早晨即出现头痛,并逐渐加重,持久。午后窦内脓性物逐渐排空,无论脓性物刺激或窦内"真空"均获改善。故午后逐渐缓解和消失。


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