+ Site Statistics
References:
54,258,434
Abstracts:
29,560,870
PMIDs:
28,072,757
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Computation of the equivalent airway resistance: a comparison with routine evaluations of plethysmographic measurements



Computation of the equivalent airway resistance: a comparison with routine evaluations of plethysmographic measurements



Respiration; International Review of Thoracic Diseases 36(2): 64-72



Equivalent (effective) values of airway resistance were determined for total breaths, inspiration and expiration in spontaneously breathing patients by means of an off-line processing system. An improvement in the alveolar pressure determination was achieved by subtracting thermal pressure drifts of the pressure plethysmograph and by taking into account instantaneous values of the intrathoracic gas volume. Equivalent resistance values were compared with the results of several simulated routine evaluations. It was found that the equivalent resistance is best approximated by the graphical procedure using average pressure points at +/- 0.5 liter/sec flow levels.

(PDF emailed within 1 workday: $29.90)

Accession: 005024613

Download citation: RISBibTeXText

PMID: 663423


Related references

Comparison of plethysmographic and impulse-oscillometric measurements of total airway resistance in children. European Respiratory Journal Supplement 10(25): 30S-31S, Sept, 1997

Computation of the Equivalent Airway Resistance. Respiration 36(2): 64-72, 1978

Thermal artifacts in plethysmographic airway resistance measurements. Journal of Applied Physiology 79(6): 1958-1965, 1995

Correction of thermal artifacts in plethysmographic airway resistance measurements. Journal of Applied Physiology 80(6): 2198-2203, 1996

Effect of electronic compensation on plethysmographic airway resistance measurements. Pediatric Pulmonology 42(9): 764-772, 2007

Plethysmographic measurements of specific airway resistance in young children. Chest 128(1): 355-362, 2005

Plethysmographic measurements using electronic BTPS compensation overestimate the specific airway resistance in children. European Respiratory Journal Supplement 10(25): 83S, Sept, 1997

Variability of plethysmographic measurements of airway resistance during the day in normal subjects and in patients with bronchial asthma and chronic bronchitis. Respiration; International Review of Thoracic Diseases 28(2): 158-166, 1971

Comparison between forced random noise impedance parameters and plethysmographic airway resistance. Clinical Research 28(2): 426A, 1980

Comparison of single-breath and plethysmographic measurements of resistance in infancy. American Journal of Respiratory and Critical Care Medicine 151(5): 1451-1458, 1995

Plethysmographic measurements of airway obstruction. Medicinski Razgledi 25(2): 191-205, 1986

Airway resistance measurements in the internist's office. Routine determination in the diagnosis and care of breathless patients. Journal of Asthma Research 6(1): 23-35, 1968

Body plethysmographic measurements of airway conductance in obstructive pulmonary disease. American Review of Respiratory Disease 99(2): 194-204, 1969

Plethysmographic specific airway resistance. Paediatric Respiratory Reviews 7 Suppl 1: S17-S19, 2006

Measurement of airway resistance with non-plethysmographic methods. Praxis und Klinik der Pneumologie 38(8): 366-371, 1984