The sphygmograph and the physiology of the circulation : a monograph read before the Medical Society of New Jersey, upon investigations made preparatory to a larger work on the practical value of the sphygmograph . tions. Onefeature seems certainly to belong to them, viz: that thenearer to the ventricle the obstruction happens to be, the moredefinite, ceteris paribus, becomes the flattening of the apex ofthe first curve of the tracing, distant obstructions as in thecapillaries of the extremities seem to exhibit themselves inthe second wave of the writing or in the interspace betweenthe first a
The sphygmograph and the physiology of the circulation : a monograph read before the Medical Society of New Jersey, upon investigations made preparatory to a larger work on the practical value of the sphygmograph . tions. Onefeature seems certainly to belong to them, viz: that thenearer to the ventricle the obstruction happens to be, the moredefinite, ceteris paribus, becomes the flattening of the apex ofthe first curve of the tracing, distant obstructions as in thecapillaries of the extremities seem to exhibit themselves inthe second wave of the writing or in the interspace betweenthe first and second, or sometimes by a tremulous waviness AND THE PHYSIOLOGY OF THE CIRCULATION. 27 of line toward its end. In proximate obstruction, such as hasbeen already described, or that produced by want of elasticityin the large arterial trunks, or by congestion and disorgan-izing diseases of organs liberally supplied with blood, as thespleen or kidneys, many observations and careful study ofthe tracings will be necessary to establish rules for interpre-tation. Still, even to an unskilled observer, the differencebetween the following records taken from Dr. Burdon San-dersons work, will be sufficiently Hypertrophy of the Left Ventricle, with Dilatation.
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Keywords: ., bookcentury1800, bookdecade1870, bookpublishern, booksubjectpulse
