Deceleration
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Coronary Angiography | |
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General Principles | |
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Anatomy & Projection Angles | |
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Normal Anatomy | |
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Anatomic Variants | |
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Projection Angles | |
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Epicardial Flow & Myocardial Perfusion | |
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Epicardial Flow | |
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Myocardial Perfusion | |
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Lesion Complexity | |
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ACC/AHA Lesion-Specific Classification of the Primary Target Stenosis | |
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Lesion Morphology | |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: ; Vanessa Cherniauskas, M.D. [2]
Synonyms and keywords:
Overview
Definition
- Deceleration is defined as when dye flow down the artery is slowed at any point during the course of flow.
- The diastolic deceleration rate (m/s2) refers to the calculation of the rate of decline in flow velocity in diastole.[1]
Pathophysiology
Example
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Clinical Significance
The coronary blood flow velocity pattern of no-reflow in patients with reperfused AMI is characterized by the occurrence of:
- systolic retrograde flow[1]
- diminished systolic antegrade flow[1]
- rapid deceleration of diastolic flow[1]
- may occur immediately after reperfusion or shortly thereafter.[2]
References
- ↑ 1.0 1.1 1.2 1.3 Iwakura, K.; Ito, H.; Takiuchi, S.; Taniyama, Y.; Nakatsuchi, Y.; Negoro, S.; Higashino, Y.; Okamura, A.; Masuyama, T. (1996). "Alternation in the coronary blood flow velocity pattern in patients with no reflow and reperfused acute myocardial infarction". Circulation. 94 (6): 1269–75. PMID 8822979. Unknown parameter
|month=ignored (help) - ↑ Iwakura, K.; Ito, H.; Nishikawa, N.; Hiraoka, K.; Sugimoto, K.; Higashino, Y.; Masuyama, T.; Hori, M.; Fujii, K. (1999). "Early temporal changes in coronary flow velocity patterns in patients with acute myocardial infarction demonstrating the no-reflow phenomenon". Am J Cardiol. 84 (4): 415–9. PMID 10468079. Unknown parameter
|month=ignored (help)