Coronary Blood Flow Velocity and Coronary Flow Reserve in Normal Left anterior Descending Coronary Arteries

2000 ◽  
Vol 8 (2) ◽  
pp. 146
Author(s):  
Seong Mi Park ◽  
Wan Joo Shim ◽  
Jeong Ho Shin ◽  
Jeong Seong Won ◽  
Jin Seok Kim ◽  
...  
Keyword(s):  
Blood Flow ◽  
Flow Velocity ◽  
Coronary Blood Flow ◽  
Coronary Flow Reserve ◽  
Coronary Arteries ◽  
Blood Flow Velocity ◽  
Coronary Flow ◽  
Flow Reserve ◽  
Coronary Blood Flow Velocity

Regional coronary blood flow velocity and vasodilator reserve in patients with angiographically normal coronary arteries

1990 ◽  
Vol 1 (5) ◽  
pp. 579-590 ◽  
Author(s):  
Morton J. Kern ◽  
Satyam Tatineni ◽  
Chalapathirao Gudipati ◽  
Frank Aguirre ◽  
Michael E. Ring ◽  
...  
Keyword(s):  
Blood Flow ◽  
Flow Velocity ◽  
Coronary Blood Flow ◽  
Coronary Arteries ◽  
Blood Flow Velocity ◽  
Normal Coronary Arteries ◽  
Vasodilator Reserve ◽  
Coronary Blood Flow Velocity

scholarly journals Role of Variability in Microvascular Resistance on Fractional Flow Reserve and Coronary Blood Flow Velocity Reserve in Intermediate Coronary Lesions

Circulation ◽  
2001 ◽  
Vol 103 (2) ◽  
pp. 184-187 ◽  
Author(s):  
Martijn Meuwissen ◽  
Steven A. J. Chamuleau ◽  
Maria Siebes ◽  
Carl E. Schotborgh ◽  
Karel T. Koch ◽  
...  
Keyword(s):  
Blood Flow ◽  
Flow Velocity ◽  
Coronary Blood Flow ◽  
Blood Flow Velocity ◽  
Fractional Flow ◽  
Flow Reserve ◽  
Coronary Lesions ◽  
Microvascular Resistance ◽  
Coronary Blood Flow Velocity

Increased basal coronary blood flow as a cause of reduced coronary flow reserve in diabetic patients

2011 ◽  
Vol 301 (6) ◽  
pp. H2279-H2284 ◽  
Author(s):  
Andrea Picchi ◽  
Ugo Limbruno ◽  
Marta Focardi ◽  
Bernardo Cortese ◽  
Andrea Micheli ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Blood Flow ◽  
Coronary Blood Flow ◽  
Coronary Flow Reserve ◽  
Coronary Arteries ◽  
Coronary Flow ◽  
Interquartile Range ◽  
Homa Index ◽  
Fractional Flow ◽  
Flow Reserve

A reduced coronary flow reserve (CFR) has been demonstrated in diabetes, but the underlying mechanisms are unknown. We assessed thermodilution-derived CFR after 5-min intravenous adenosine infusion through a pressure-temperature sensor-tipped wire in 30 coronary arteries without significant lumen reduction in 30 patients: 13 with and 17 without a history of diabetes. We determined CFR as the ratio of basal and hyperemic mean transit times (Tmn); fractional flow reserve (FFR) as the ratio of distal and proximal pressures at maximal hyperemia to exclude local macrovascular disease; and an index of microvascular resistance (IMR) as the distal coronary pressure at maximal hyperemia divided by the inverse of the hyperemic Tmn. We also assessed insulin resistance by the homeostasis model assessment (HOMA) index. FFR was normal in all investigated arteries. CFR was significantly lower in diabetic vs. nondiabetic patients [median (interquartile range): 2.2 (1.4–3.2) vs. 4.1 (2.7–4.4); P = 0.02]. Basal Tmn was lower in diabetic vs. nondiabetic subjects [median (interquartile range): 0.53 (0.25–0.71) vs. 0.64 (0.50–1.17); P = 0.04], while hyperemic Tmn and IMR were similar. We found significant correlations at linear regression analysis between logCFR and the HOMA index ( r2 = 0.35; P = 0.0005) and between basal Tmn and the HOMA index ( r2 = 0.44; P < 0.0001). In conclusion, compared with nondiabetic subjects, CFR is lower in patients with diabetes and epicardial coronary arteries free of severe stenosis, because of increased basal coronary flow, while hyperemic coronary flow is similar. Basal coronary flow relates to insulin resistance, suggesting a key role of cellular metabolism in the regulation of coronary blood flow.

Changes in Phasic Coronary Blood Flow Velocity Profile and Relative Coronary Flow Reserve in Patients With Hypertrophic Obstructive Cardiomyopathy

Circulation ◽  
1997 ◽  
Vol 96 (3) ◽  
pp. 834-841 ◽  
Author(s):  
Michael K. Kyriakidis ◽  
John M. Dernellis ◽  
Aristides E. Androulakis ◽  
Glafkos A. Kelepeshis ◽  
John Barbetseas ◽  
...  
Keyword(s):  
Blood Flow ◽  
Velocity Profile ◽  
Flow Velocity ◽  
Blood Flow Velocity ◽  
Coronary Flow ◽  
Hypertrophic Obstructive Cardiomyopathy ◽  
Flow Reserve ◽  
Flow Velocity Profile ◽  
Phasic Coronary Blood Flow ◽  
Coronary Blood Flow Velocity

scholarly journals Phasic coronary blood flow velocity pattern and flow reserve in the atrium: regulation of left atrial myocardial perfusion

2003 ◽  
Vol 41 (4) ◽  
pp. 674-680 ◽  
Author(s):  
Emmanuel I Skalidis ◽  
George E Kochiadakis ◽  
Nikolaos E Igoumenidis ◽  
Konstantinos E Vardakis ◽  
Panos E Vardas
Keyword(s):  
Blood Flow ◽  
Myocardial Perfusion ◽  
Flow Velocity ◽  
Coronary Blood Flow ◽  
Blood Flow Velocity ◽  
Left Atrial ◽  
Velocity Pattern ◽  
Flow Reserve ◽  
Phasic Coronary Blood Flow ◽  
Coronary Blood Flow Velocity
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