Predicting arterial oxygen tension from maximum expiratory flow volume curves in cystic fibrosis

1989 ◽  
Vol 6 (1) ◽  
pp. 27-30 ◽  
Author(s):  
Arlene A. Stecenko ◽  
Linda Postotnik ◽  
Ronald G. Thomas
Keyword(s):  
Cystic Fibrosis ◽  
Oxygen Tension ◽  
Arterial Oxygen Tension ◽  
Arterial Oxygen ◽  
Flow Volume ◽  
Maximum Expiratory Flow ◽  
Expiratory Flow

scholarly journals Re-evaluation of Mist Therapy in Children with Cystic Fibrosis Using Maximum Expiratory Flow-volume Curves

1970 ◽  
Vol 4 (5) ◽  
pp. 478-478
Author(s):  
Etsuro K Motoyama ◽  
Lewis E Gibson ◽  
Charlene J Zigas ◽  
Charles D Cook
Keyword(s):  
Cystic Fibrosis ◽  
Flow Volume ◽  
Maximum Expiratory Flow ◽  
Expiratory Flow

EVALUATION OF MIST TENT THERAPY IN CYSTIC FIBROSIS USING MAXIMUM EXPIRATORY FLOW VOLUME CURVE

PEDIATRICS ◽  
1972 ◽  
Vol 50 (2) ◽  
pp. 299-306
Author(s):  
E. K. Motoyama ◽  
L. E. Gibson ◽  
C. J. Zigas
Keyword(s):  
Cystic Fibrosis ◽  
Initial Period ◽  
Forced Expiratory Volume ◽  
Lower Airway ◽  
Flow Volume ◽  
Ventilatory Function ◽  
Volume Curve ◽  
Maximum Expiratory Flow ◽  
Expiratory Flow ◽  
Lower Airway Obstruction

The effect of home mist tent therapy in cystic fibrosis was reexamined using the measurement of maximum expiratory flow volume (MEFV) curves, forced expiratory volume (FEV1), and vital capacity (VC) in 16 patients every 2 weeks during a period of 4 to 5 months. In half of the patients the studies were made during an initial period of 8 to 12 weeks off and then a similar period on nocturnal mist tent therapy; in the other half the test conditions were reversed. No evidence of improvement in ventilatory function was found in these patients during the use of a mist tent; instead there was a small but significant decline in their ventilatory function. Home visits were made and bacterial contamination of mist tent equipment was noted in more than two-thirds of the tents in spite of careful cleaning instructions to the parents. The MEFV curve was found to be a simple yet sensitive test of evaluating lower airway obstruction in cystic fibrosis.

PULMONARY MECHANICS IN ASTHMA AND CYSTIC FIBROSIS

PEDIATRICS ◽  
1971 ◽  
Vol 48 (1) ◽  
pp. 64-72
Author(s):  
Alois Zapletal ◽  
Etsuro K. Motoyama ◽  
Lewis E. Gibson ◽  
Arend Bouhuys
Keyword(s):  
Cystic Fibrosis ◽  
Maximum Flow ◽  
Pulmonary Mechanics ◽  
Flow Volume ◽  
Flow Rates ◽  
Normal Limits ◽  
Children With Asthma ◽  
Maximum Expiratory Flow ◽  
Expiratory Flow ◽  
Expiratory Flow Rates

Maximum expiratory flow rates on flow-volume curves are often decreased below normal limits in children with asthma or cystic fibrosis who are clinically well and whose standard spirometric tests are within normal limits. In particular, maximum flow rates at small lung volumes (25% of vital capacity) are decreased. Maximum expiratory flow-volume (MEFV) curves provide a sensitive and quantitative assessment of small airway obstruction in these and other obstructive lung conditions.

Analysis of Maximum Expiratory Flow Volume Curves Using Canonical Correlation Analysis

1985 ◽  
Vol 24 (02) ◽  
pp. 91-100 ◽  
Author(s):  
W. van Pelt ◽  
Ph. H. Quanjer ◽  
M. E. Wise ◽  
E. van der Burg ◽  
R. van der Lende
Keyword(s):  
Correlation Analysis ◽  
Canonical Correlation Analysis ◽  
Canonical Correlation ◽  
Flow Volume ◽  
Non Linear ◽  
Maximum Expiratory Flow ◽  
Expiratory Flow ◽  
Relationship Of ◽  
The Relationship ◽  
Age And Sex

SummaryAs part of a population study on chronic lung disease in the Netherlands, an investigation is made of the relationship of both age and sex with indices describing the maximum expiratory flow-volume (MEFV) curve. To determine the relationship, non-linear canonical correlation was used as realized in the computer program CANALS, a combination of ordinary canonical correlation analysis (CCA) and non-linear transformations of the variables. This method enhances the generality of the relationship to be found and has the advantage of showing the relative importance of categories or ranges within a variable with respect to that relationship. The above is exemplified by describing the relationship of age and sex with variables concerning respiratory symptoms and smoking habits. The analysis of age and sex with MEFV curve indices shows that non-linear canonical correlation analysis is an efficient tool in analysing size and shape of the MEFV curve and can be used to derive parameters concerning the whole curve.

Intra-arterial Oxygen Tension Monitoring

1987 ◽  
Vol 25 (3) ◽  
pp. 199-208 ◽  
Author(s):  
STEVEN J. BARKER ◽  
KEVIN K. TREMPER
Keyword(s):  
Oxygen Tension ◽  
Arterial Oxygen Tension ◽  
Arterial Oxygen

Effect of pre-operative starvation on intra-operative arterial oxygen tension in horses

1996 ◽  
Vol 23 (2) ◽  
pp. 75-77
Author(s):  
P. Dobromylskyj ◽  
P.M. Taylor ◽  
J.C. Brearley ◽  
C.B. Johnson ◽  
S.P.L. Luna
Keyword(s):  
Oxygen Tension ◽  
Arterial Oxygen Tension ◽  
Arterial Oxygen

PERIODIC BREATHING AND APNEA IN PRETERM INFANTS. II. HYPOXIA AS A PRIMARY EVENT

PEDIATRICS ◽  
1972 ◽  
Vol 50 (2) ◽  
pp. 219-228
Author(s):  
Henrique Rigatto ◽  
June P. Brady
Keyword(s):  
Preterm Infants ◽  
Oxygen Tension ◽  
Minute Ventilation ◽  
Arterial Oxygen Tension ◽  
Blood Gases ◽  
Periodic Breathing ◽  
Capillary Blood ◽  
Arterial Oxygen ◽  
Primary Event ◽  
The Relationship

We studied nine healthy preterm infants during the first 35 days of life to define the relationship between periodic breathing, apnea, and hypoxia. For this purpose we compared ventilation/apnea (V/A), minute ventilation, and alveolar and capillary blood gases during periodic breathing induced by hypoxia and during spontancous periodic breathing in room air. We induced periodic breathing by giving the baby in sequence 21, 19, 17, and 15% O2 to breathe for 5 minutes each, and also by giving 21, 15, and 21% O2. We measured ventilation with a nosepiece and a screen flowmeter. With a decrease in arterial oxygen tension, preterm infants (1) hypoventilated, (2) breathed periodically more frequently, and (3) showed a decrease in V/A due to an increase in the apneic interval. In one baby this led to apnea lasting 30 seconds. These findings support our hypothesis that preterm infants breathing periodically hypoventilate and suggest that hypoxia may be a primary event leading to periodic breathing and apnea.

Sign in / Sign up

Export Citation Format

Share Document