| 释义 | dicrotic, a. Phys. and Path.|daɪˈkrɒtɪk|
[f. Gr. δίκροτ-ος double-beating (f. δι- twice + κρότ-ος rattling noise, beat) + -ic: in mod.F. dicrote, med. or mod.L. dicrotus.]
Of the pulse (or a sphygmographic tracing of its motion): Exhibiting a double beat or wave for each beat of the heart; applied esp. to a pathological pulse in which the secondary wave which follows the primary is more marked than usual.
(Etymologically ‘dicrotic’ might be applied to any double-beating pulse, whether the secondary wave occurs in the rise or in the fall of the main wave; it is, in use, restricted to the latter case, the former being called anacrotic.)
[1706Phillips (ed. Kersey), Dicrotus, a Pulse that beats twice. (So in Bailey; in Ash dicrotos). 1741Jas. Nihell Crises of the Pulse 1 The Pulsus Dicrotus of the Ancients, which in English may be properly called the Rebounding Pulse.] 1811Hooper Med. Dict., Dicrotic, a term given to a pulse in which the artery rebounds after striking, so as to convey the sensation of a double pulsation. 1822Good Stud. Med. II. 26 When..we come to a distinction between the free and dilated pulse..the quick and the frequent..the dicrotic, coturnising, and inciduous..proposed by Solano, as mere subvarieties of the rebounding, or redoubling. 1857Dunglison Med. Dict. 772 Pulse, dicrotic..that in which the finger is struck twice at each pulsation, once lightly, the other time more strongly. 1865New Syd. Soc. Year-bk. Med. 11 On the other hand, increase in the heart's force..makes the pulse dicrotic. 1875H. C. Wood Therap. (1879) 140 Some of his sphygmographic tracings are markedly dicrotic.
b. Of or pertaining to a dicrotic pulse or tracing, as a dicrotic notch, or dicrotic wave.
1869New Syd. Soc. Retrospect Med. 149 The correspondence between the depth of the dicrotic notch and the severity of the pyrexia. 1878Foster Phys. i. iv. §3. 137 The dicrotic wave occurring towards the end of the descent. 1883Syd. Soc. Lex., Dicrotic wave, a secondary wave which follows more or less quickly the primary wave of the pulse in sphygmographic tracings. |
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