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《PEDIATRIC EMERGENCY MEDICINE》 1999-01
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The Clinical Significance of TFV Loops in Infants with Wheezing Pneumonia

Wu Jichuan Fan xunmei Liu xicheng ICU,Beijing Children's Hospital,Beijing 100045  
Objetive To investigate the changes of TFV loop and the related parameters in infants with wheezing pneumonia, Methods 50 infants with pneumonia were involved,including 27 cases with wheezing.The TFV loops and related parameters were measured by useing Sensor Medics 2 600 Pediatric pulmonary laboratory.Results were compared between wheezing and no wheezing groups,and infants with wheezing and after wheezing disappeared.Results In wheezing infants,the expiratory peak of TFV loop goes forward,the latter part of the expiratory curve become concave facing the volume axis,like “wave trough”.After wheezing disappeared,the concave cure rises upward and becomes convex.The TFV loop of no wheezing infant was “Shuttle” shape,and in %V PF、Tp/Te、25/PF and 50/PF.There were significant differences between wheezing and no wheezing groups.Conclusion The shape of TFV loop and %V PF Tp/Te 50/PF and 25/PF are reliable indicators for infants with lower airway obstruction.
【CateGory Index】: R725.631
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