"To an extent, an increased degree (percentage occlusion) of stenosis corresponds to increased PSV and EDV 5. In near occlusion (>99%), flow velocity indices become unreliable (may be high, low or absent) 5. In this setting, a significant reduction in post-stenotic flow velocity is termed “trickle flow” 6. PSV and EDV are absent in complete occlusion 5."
Expected headings
"Explanation"
"Factors that influence flow velocity indices"
"To an extent, an increased degree (percentage occlusion) of stenosis corresponds to increased PSV and EDV 5. In near occlusion (>99%), flow velocity indices become unreliable (may be high, low or absent) 5. In this setting, a significant reduction in post-stenotic flow velocity is termed “trickle flow” 6. PSV and EDV are absent in complete occlusion 5."