Analysis of phasic flow velocity dynamics in the left anterior descending coronary artery before and after angioplasty using transthoracic echocardiography in patients with stable angina pectoris.
High-frequency transthoracic Doppler echocardiography was used to determine the effects of significant stenosis on distal coronary blood flow velocity profiles. Before coronary angioplasty there was a reduction in diastolic and systolic flow and diastolic/systolic peak velocity ratio. After successful angioplasty velocity ratios returned to normal.
Crowley
J J
JJ
Regional Cardiac Unit, Papworth Hospital, Cambridge, United Kingdom.
Shapiro
L M
LM
D000368:Aged; D000787:Angina Pectoris / Q000000981:diagnostic imaging / Q000503:physiopathology*; D015906:Angioplasty, Balloon, Coronary; D003331:Coronary Vessels / Q000000981:diagnostic imaging / Q000502:physiology*; D004452:Echocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012039:Regional Blood Flow; D014655:Vascular Resistance