Literature DB >> 2817951

Pressure flow characteristics of the valve in spacer devices.

F H Sennhauser1, P D Sly.   

Abstract

The valve system in the mouth piece of two spacer devices was analysed. Pressures required to open and close the non-rebreathing valve were very low (less than 0.1 kPa). Inspiratory flow requirements were within physiological limits for infants' normal tidal breathing. Expiratory flow requirements varied significantly, and the flow required to prevent rebreathing from the chamber may exceed the physiological flow limits for normal tidal breathing.

Entities:  

Mesh：

Substances：

Year:  1989        PMID： 2817951      PMCID： PMC1792748          DOI： 10.1136/adc.64.9.1305

Source DB:  PubMed          Journal:  Arch Dis Child        ISSN： 0003-9888            Impact factor:   3.791


  5 in total

1.  Oropharyngeal deposition and delivery aspects of metered-dose inhaler aerosols.

Authors:  C S Kim; M A Eldridge; M A Sackner
Journal:  Am Rev Respir Dis       Date:  1987-01

2.  A method for ventilatory measurements in subjects 1 month--5 years of age: Normal results and observations in disease.

Authors:  C F Doershuk; T D Downs; L W Matthews; M D Lough
Journal:  Pediatr Res       Date:  1970-03       Impact factor: 3.756

3.  Bronchodilators for wheezy infants?

Authors:  M Silverman
Journal:  Arch Dis Child       Date:  1984-01       Impact factor: 3.791

4.  Tidal pressure/volume and flow/volume respiratory loop patterns in human neonates.

Authors:  A D Milner; R A Saunders; I E Hopkin
Journal:  Clin Sci Mol Med       Date:  1978-03

5.  Pulmonary mechanics in early infancy. Subclinical grunting in low-birth-weight infants.

Authors:  M Lindroth; B Johnson; H Ahlström; N W Svenningsen
Journal:  Pediatr Res       Date:  1981-07       Impact factor: 3.756
  5 in total
  5 in total

1.  Inhalation devices.

Authors: 
Journal:  CMAJ       Date:  2005-09-13       Impact factor: 8.262

2.  Drug delivery from holding chambers with attached facemask.

Authors:  M L Everard; A R Clark; A D Milner
Journal:  Arch Dis Child       Date:  1992-05       Impact factor: 3.791

3.  Pressure flow characteristics of the valve in spacer devices.

Authors:  M Everard; A D Milner
Journal:  Arch Dis Child       Date:  1990-01       Impact factor: 3.791

4.  A new baby-spacer device for aerosolized bronchodilator administration in infants with bronchopulmonary disease.

Authors:  R Kraemer; P Birrer; K Modelska; C C Aebischer; M H Schöni
Journal:  Eur J Pediatr       Date:  1992-01       Impact factor: 3.183

5.  Inhalational drug delivery from seven different spacer devices.

Authors:  P W Barry; C O'Callaghan
Journal:  Thorax       Date:  1996-08       Impact factor: 9.139
  5 in total

北京卡尤迪生物科技股份有限公司 © 2022-2023.