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Fractional Flow Reserve

Abstract

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Diagnosis of ischemia-causing coronary stenoses by noninvasive fractional flow reserve computed from coronary computed tomographic angiograms. Results from the prospective multicenter DISCOVER-FLOW Experimental basis of determining maximum coronary, myocardial, and collateral blood flow by pressure measurements for assessing functional stenosis severity before and after percutaneous transluminal coronary angioplasty Machine Learning Approaches in Cardiovascular Imaging Long-term Variations of FFR and iFR After Transcatheter Aortic Valve Implantation Diagnostic performance of noninvasive fractional flow reserve derived from coronary computed tomography angiography in suspected coronary artery disease: the NXT trial (Analysis of Coronary Blood Flow Using CT Angiography: Next Steps) Five-Year Outcomes with PCI Guided by Fractional Flow Reserve Fractional Flow Reserve-Guided Complete Revascularization Improves the Prognosis in Patients With ST-Segment-Elevation Myocardial Infarction and Severe Nonculprit Disease: A DANAMI 3-PRIMULTI Substudy (Primary PCI in Patients With ST-Elevation Myocardial Infarction and Multivessel Disease: Treatment of Culprit Lesion Only or Complete Revascularization) Clinical Significance of Concordance or Discordance Between Fractional Flow Reserve and Coronary Flow Reserve for Coronary Physiological Indices, Microvascular Resistance, and Prognosis After Elective Percutaneous Coronary Intervention

Original Research2021 Jan 14;S0002-8703(21)00011-9.

JOURNAL:Am Heart J. Article Link

Late kidney injury after transcatheter aortic valve replacement

Y Adachi, M Yamamoto, OCEAN-TAVI investigators et al. Keywords: late kidney injury; TAVR; clinical outcome

ABSTRACT

BACKGROUND - Information on early to late-phase kidney damage in patients who underwent transcatheter aortic valve replacement (TAVR) is scarce. We aimed to identify the predictive factors for late kidney injury (LKI) at 1-year and patient prognosis beyond 1-year after TAVR.

 

METHODS - We retrospectively reviewed 1705 patientsdata from the Japanese TAVR multicenter registry. Acute kidney injury (AKI) and LKI, defined as an increase of at least 0.3 mg/dl in creatinine level, a relative 50% decrease in kidney function from baseline to 48-hours and 1-year, were evaluated. The patients were categorized into the four groups as AKI- /LKI- (n=1362), AKI+ /LKI- (n=95), AKI- /LKI+ (n=199), and AKI+ /LKI+ (n=46).

 

RESULTS - The cumulative 3-year mortality rates were significantly increased across the four groups (12.5%, 15.8%, 24.6%, 25.8%, p<0.001). Multivariate analysis revealed that chronic kidney disease, coronary artery disease, peri-procedural AKI, and heart failure-related re-admission within 1-year were significantly associated with LKI. The Cox regression analysis revealed that AKI- /LKI+ and AKI+ /LKI+ were independent predictors of increased late mortality beyond 1-year after TAVR (p=0.001 and p=0.01).

 

CONCLUSION - LKI was influenced by adverse cardio-renal events and was associated with increased risks of late mortality beyond 1-year after TAVR.