Page 82 - Coronary hemodynamics in acute myocardial infarction - Matthijs Bax
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Chapter 5
between patients with and without a rapid DDT or SRF in the infarct-related artery (log-rank P=0.42 and P=0.23, respectively).
Clinical and Procedural Characteristics According to Reference Vessel CFVR and Extent of Myocardial Infarction
Differences in clinical and procedural characteristics between the 2 reference vessel CFVR groups are shown in Table 3, which includes known prognostic factors for mortality in STEMI patients.23–25 Notably, the impairment in reference vessel CFVR resulted primarily from a low hyperemic APV in the presence of high hyperemic microvascular resistance, in combination with a high baseline APV in the presence of a low baseline microvascular resistance in patients with an abnormal reference vessel CFVR (Table 3).
A
B
Figure. Kaplan-Meier estimates and log-rank comparison of cumulative cardiac mortality. A, Reference vessel coronary flow velocity reserve (refCFVR) and (B) Infarct-related artery (IRA) CFVR. High reference vessel CFVR values show significantly lower cardiac mortality rates as compared with low reference vessel CFVR values. No statistical difference was found between high and low infract-related artery CFVR values.
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