presystolicadj.
/ˌpriːsᵻˈstɒlɪk/, U.S. /ˌprisəˈstɑlɪk/ Physiology and Medicine.
Occurring immediately before systole; late diastolic.
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the world > life > the body > vascular system > circulation > pulsation > [adjective] > intervals
presystolic1849
perisystolic1853
peridiastolic1875
1849 Western Jrnl. Med. & Surg. 4 123 A souffle accompanying the second sound, indicates arterial insufficiency, or, more rarely, an auriculo-ventricular narrowing. The sign of this last alteration, is frequently a pre-systolic souffle.
1872 Lancet 25 May 715/2 However we may explain the mode of origin of the presystolic murmur, its diagnostic significance remains wholly unaffected.
1897 T. C. Allbutt et al. Syst. Med. III. 58 He has..a well-marked presystolic thrill.
1943 Jrnl. Inst. Electr. Engineers 90 iii. 39/2 The frequency of pre-systolic murmurs lies mainly below 140c./s.
1996 Circulation 94 1125 Presystolic potentials..were identified in 58% of the tachycardia episodes mapped.
This entry has been updated (OED Third Edition, March 2007; most recently modified version published online March 2022).
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