Myocardial perfusion during transient slow-flow in the patient with old vein graft intervention: assessment by serial measurement of pressure-derived fractional flow reserve and thermodilution-derived coronary flow reserve.
A patient with distal slow-flow after stenting in the old vein graft intervention was reported. This case is a first in whom guidewire-based serial measurement of pressure-derived fractional flow reserve (FFR(myo)) and thermodilution-based coronary flow reserve (CFR(thermo)) clearly demonstrated the serial change of microvascular circulation. During slow-flow, CFR(thermo) remained in low value despite significant improvement of FFR(myo) from 0.61 to 0.90. After thrombus aspiration and nicorandil injection, coronary flow reestablished immediately. CFR(thermo) improved significantly from 1.3 during slow-flow to 3.6 after restoration of flow.
Matsuo
Hitoshi
H
Department of Cardiology, Gifu Prefectural Hospital, Gifu City, Gifu, Japan. matsuo@iri.rd.pref.gifu.jp
Watanabe
Sachiro
S
Yasuda
Shinji
S
Hirose
Takeshi
T
Iwama
Makoto
M
Tanaka
Shinichiro
S
Yamaki
Takahiko
T
Ono
Kouji
K
Takahashi
Haruki
H
Segawa
Tomonori
T
Matsuno
Yukihiko
Y
Minatoguchi
Shinya
S
Fujiwara
Hisayoshi
H
D000368:Aged; D015906:Angioplasty, Balloon, Coronary; D001783:Blood Flow Velocity / Q000502:physiology; D001794:Blood Pressure / Q000502:physiology; D017023:Coronary Angiography; D003326:Coronary Circulation / Q000502:physiology*; D023903:Coronary Restenosis / Q000175:diagnosis / Q000503:physiopathology* / Q000628:therapy*; D004562:Electrocardiography; D006801:Humans; D008297:Male; D008833:Microcirculation / Q000502:physiology; D015425:Myocardial Reperfusion; D013815:Thermodilution