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目的 :探讨测量单侧鼻腔最大吸气流量 (PnIFR)的方法及其临床价值。方法 :使用在RHAT 30 1型数字式风速 /温度表基础上研制的流量计测量 10 0例 2 0 0侧麻黄素收缩鼻腔粘膜前、后单侧鼻腔PnIFR。并记录主观感觉鼻腔通气程度。结果 :单侧鼻腔PnIFR值 :男性组正常者明显高于女性组正常者 (P <0 .0 1) ;男性组正常者分别高于男性组轻、中、重度阻塞者 (P <0 .0 1) ;女性组正常者分别高于女性组轻、中、重度阻塞者 (P <0 .0 1) ;两组在麻黄素收缩鼻粘膜前与麻黄素收缩鼻粘膜后 ,差异均有显著性意义 (P <0 .0 1)。主观感觉鼻通气程度 (4级 ) :两组与单侧鼻腔PnIFR值均呈负相关 (P <0 .0 1)。结论 :测量单侧鼻腔PnIFR值可较准确地反映鼻腔通气程度及药物对鼻阻力的影响 ,改装后的热电流量计 ,使用方便 ,测量准确 ,适合于临床研究和日常检查应用
Objective: To investigate the method of measuring the maximal inspiratory flow (PnIFR) in unilateral nasal cavity and its clinical value. Methods: The nasal PnIFR was measured before and after nasal mucosa contractions of nasal mucosa using a flowmeter developed on the basis of RHAT 30 type 1 digital anemometer. And record the subjective feeling of nasal ventilation. Results: The unilateral nasal PnIFR values were significantly higher in normal male subjects than in normal female subjects (P <0.01); those in normal male subjects were significantly higher than those in mild, moderate and severe obstructive male patients (P <0.01) 1). The normal women in the female group were higher than those in the female group with mild, moderate and severe obstruction (P <0.01). There was significant difference between the two groups in the contraction of nasal mucosa before ephedrine and ephedrine Significance (P <0 .01). Subjective perception of nasal ventilation (Grade 4): Both groups had a negative correlation with unilateral nasal PnIFR (P <0.01). Conclusion: The measurement of unilateral nasal PnIFR can reflect the degree of nasal ventilation and the effect of drugs on nasal resistance more accurately. The modified thermoelectric flowmeter is easy to use and accurate to measure, suitable for clinical research and routine examination