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  • Poster presentation
  • Open Access

Effects of abdominal compression on respiratory parameters in normal volunteers

  • 1,
  • 2 and
  • 1
Critical Care20048 (Suppl 1) :P167

https://doi.org/10.1186/cc2634

  • Published:

Keywords

  • Public Health
  • Respiratory Rate
  • Emergency Medicine
  • Tidal Volume
  • Force Vital Capacity

Objectives

To analyse the effects of 10% and 15% of the baseline abdominal circumference compression with a band in the respiratory rate (RR), tidal volume (TV), forced vital capacity (FVC) and maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP) in normal volunteers.

Methods

Twenty-six normal volunteers, mean age of 24 years, 14 female and 12 male, in spontaneous breathing were submitted to abdominal circumference measurement. Thereafter, we obtained their RR, TV, FVC, MIP and MEP. Then, we repeated the measures after compression of abdomen using an external band to achieve -10% and -15% of the basal abdominal circumference. Then, we took out the band and measured the respiratory parameters again.

Results

See Table 1.

Table 1

 

Baseline compression

 

Abdominal compression

of 10%

 

Abdominal compression

of 15%

 

Baseline

compression

Abdominal circumference (cm)

81.7 ± 9.3

→*

73.7 ± 8.6

→*

69.6 ± 8.2

→*

81.7 ± 9.3

Respiratory rate

15.2 ± 2.4

15.65 ± 2.1

16.23 ± 2.3

15.69 ± 2.7

Tidal volume (ml)

517 ± 109

→*

456 ± 86

458 ± 157

→*

543 ± 105

Forced vital capacity (ml)

4146 ± 870

4097 ± 906

3973 ± 880

4113 ± 963

Maximal inspiratory pressure (cmH2O)

111 ± 27

→*

96 ± 27

94 ± 28

→*

109 ± 29

Maximal expiratory pressure (cmH2O)

115 ± 27

104 ± 28

101 ± 28

→*

116 ± 29

*P < 0.005.

Conclusion

The abdominal compression of -10% and -15% with an external band decreased TV, MIP and MEP (the last one only with -5% compression) and did not affect RR and FVC.

Authors’ Affiliations

(1)
University of São Paulo, Brazil
(2)
University of Bandeirantes of São Paulo, Brazil

Copyright

© BioMed Central Ltd. 2004

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