. Physical diagnosis . Fig. —Sphygmographic Tracing of Low Tension Pulse. The pulse of low tension collapses between beats, so that the ar-tery is less palpable than usual or cannot be felt at all. Normally,the artery can just be made out between beats, and any consider-able lowering of arterial tension makes it altogether impalpableexcept during the period of the primary wave and of the dicroticwave, which is often very well marked in pulses of low tension.*^ Theshape of the wave under these conditions has already been described(see Fig. 90).. Fig. 91.—Sphygmographic Tracing of High Tensi
. Physical diagnosis . Fig. —Sphygmographic Tracing of Low Tension Pulse. The pulse of low tension collapses between beats, so that the ar-tery is less palpable than usual or cannot be felt at all. Normally,the artery can just be made out between beats, and any consider-able lowering of arterial tension makes it altogether impalpableexcept during the period of the primary wave and of the dicroticwave, which is often very well marked in pulses of low tension.*^ Theshape of the wave under these conditions has already been described(see Fig. 90).. Fig. 91.—Sphygmographic Tracing of High Tension Pulse. The pulse of high tension is perceptible between beats as a distinctcord which can be rolled between the fingers, like one of the tendonsof the wrist. It is also difficult to compress in most cases, but thismay depend rather on the hearts power than on the degree of vas-cular tension. A high-tension pulse is often indistinguishable fromone stiffened by arteriosclerosis (vide infra). The pulse wave isusually of moderate height or low, and falls away slowly with littleor no dicrotic wave (see Fig. 91). PALPATION AND THE STUDY OF THE PULSE 105 6. The Size and Position of the Artery. I have often known errors to occur because a small artery is mis-taken for a small pulse wave. The size of the branches of the arterialtree varies a great deal in different individuals of the same weightand height, and if the radial is unusually small and a hurried ob-servation gives us the impression (true, so far as it goes) that there isvery little i
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectdiagnos, bookyear1912