Vicious circles in disease / by Jamieson B. Hurry.

  • Jamieson Boyd Hurry
Date:
1913
Catalogue details

Licence: Public Domain Mark

Credit: Vicious circles in disease / by Jamieson B. Hurry. Source: Wellcome Collection.

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    As Gradle points out : “ Hypertrophic processes accompanied by inflammation thus tend to perpetuation, by reason of the Vicious Circle to which they give rise.” 1 When once established, the stenosis may seriously interfere with the removal of secretions and thus lead to an accumulation which increases the obstruction. The pathological sequences are well described by Ashhurst : “ Obstruction, by preventing or interfering with the expulsive forces of the expiratory current, prevents the removal of the usually abnormal amount of secretion, either by blowing the nose or otherwise ; its accumulation is in its turn an efficient factor in producing obstruction, and a Vicious Circle .... is thus established.” 2 Watson Williams has pointed out that deflection of the septum and nasal obstruction react on each other. The deflection causes stenosis on the side of the convexity, leading to diminished pressure behind the obstruction, which diminution tends to increase the deflection : “ As a consequence of the partial nasal obstruction from deflected septum, inspiration causes a rarefaction of the air behind the obstruction : as a consequence over-filling of the vessels, and constant hyperaemia with chronic rhinitis and further increase of the nasal stenosis may result.” 3 1 Diseases of the Nose, Pharynx and Ear, p. 46. 2 Cyclopedia of Surgery, Vol. V., p. 404. 3 Diseases of the Upper Respiratory Tract, p. 337.