Penh is not a measure of airway resistance!

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Penh is not a measure of airway resistance!

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 LUNDBL...

متن کامل

When a software measure is not a measure

A recent interesting paper by Melton et al. [ 11 discussed finding measures which preserve intuitive orderings on software documents. Informally, if 5 is such an ordering, then they argue that a measure M is a real-valued function defined on documents such that M(F) < M(F')whenever F< F. However, in measurement theory, this is only a necessary condition for a measure M. The representation condi...

متن کامل

Concept of Atherosclerosis Velocity: Is It a Better Measure of Cardiovascular Risk?

In most cases atherosclerosis is the underlying cause of vascular diseases, including heart disease and stroke. It is believed that endothelial injury is the earliest change in the artery wall and that this precedes the formation of lesions of atherosclerosis. Recent developments in the field of atherosclerosis have led to a renewed interest in the recognition of the parameter of time in the at...

متن کامل

p-HARMONIC MEASURE IS NOT SUBADDITIVE

When 1 < p < ∞ and p 6= 2 the p-harmonic measure on the boundary of the half plane R+ is not subadditive. In fact, there are finitely many sets E1, E2,...,Eκ on R, of p-harmonic measure zero, such that E1 ∪ E2 ∪ ... ∪ Eκ = R.

متن کامل

The forced expiratory time as a measure of small airway resistance.

1. In five subjects, ten consecutive forced expiratory spirograms were recorded on each of 6 different days and the total forced expiratory time (FET) on each spirogram was measured. The mean overall coefficient of variation of the FET was 11.3% and of the ratio forced vital capacity (FVC)/FET was 8%. 2. Twenty-two subjects with probable small (less than 2 mm diameter) airway dysfunction as man...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: European Respiratory Journal

سال: 2007

ISSN: 0903-1936,1399-3003

DOI: 10.1183/09031936.00091307