TY - JOUR T1 - Penh is not a measure of airway resistance! JF - European Respiratory Journal JO - Eur Respir J SP - 805 LP - 805 DO - 10.1183/09031936.00091307 VL - 30 IS - 4 AU - L. K. A. Lundblad AU - C. G. Irvin AU - Z. Hantos AU - P. Sly AU - W. Mitzner AU - J. H. T. Bates Y1 - 2007/10/01 UR - http://erj.ersjournals.com/content/30/4/805.1.abstract N2 - To the Editors: We wish to express serious concern about an article in the current issue of the European Respiratory Journal, in which Mehta et al. 1 reported the effects of choline treatment on airway hyperresponsiveness using unrestrained plethysmography to derive enhanced pause (Penh) as a measure of lung function. In the Methods section of their paper, Mehta et al. [1] refer to a previous study by Lundblad et al. 2 in support of their … ER -