Asthma and Tightness in the Chest
More confusion and
contradictions:
I submit that the below in red conclusions are DEAD WRONG. Tightness in the chest is
and does cause shortness of breath often associated with asthma, bronchoconstriction, emphysema and all COPD.
Remove the tightness and you often remove all of some of the shortness of breath symptoms
associated with "asthma". This is from time to time one
way most breathing problems get confused with one another.
More
about
"Tightness" sensation of asthma does not arise from the work of breathing." Binks AP, Moosavi SH, Banzett RB, Schwartzstein RM.
Physiology Program, Harvard School of Public Health, Harvard Medical School, Boston, Massachusetts 02115, USA. abinks@hsph.harvard.edu
Asthma evokes several uncomfortable sensations including increased
"effort to breathe" and chest "tightness." We have
tested the hypotheses that "effort" and "tightness"
are due to perception of increased work performed by the respiratory
muscles. Bronchoconstriction was induced by inhaled methacholine in 15
subjects with mild asthma (FEV(1)/FVC baseline = 81.9% +/- 5.8;
bronchoconstriction = 64.0% +/- 8.6). To relieve the work of breathing,
and thereby minimize activation of respiratory muscle afferents and motor
command, subjects were mechanically ventilated. Subjects separately rated
effort to breathe and tightness during mechanical ventilation and during
spontaneous breathing. Bronchoconstriction produced elevated
end-expiratory lung volume (279 +/- 62 ml); in a control study,
end-expiratory lung volume was increased equally in the absence of
bronchoconstriction by increasing end-expiratory pressure. During
bronchoconstriction, ratings of effort were greater during spontaneous
breathing than during mechanical ventilation (p < 0.05). Ratings of
tightness were unchanged by the absence of respiratory muscle activity (p
= 0.12). Hyperinflation alone did not produce tightness or effort. We
conclude that tightness is not related to the increase in respiratory work
during bronchoconstriction. PMID 11779734 [PubMed - indexed for MEDLINE]
Am
J Respir Crit Care Med. 2002 Jan 1;165(1)2-3.
"Mike White is a genius at his work.
Recommendation:
In-office breathing work
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