Early patency of the infarct-related artery after myocardial infarction preserves diastolic filling

Levy, Wayne C.; Cerqueira, Manuel D.; Weaver, W. Douglas; Stratton, John R.

doi:10.1016/s0002-9149(01)01428-x

Cited by 5 publications

(5 citation statements)

References 27 publications

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“…Diastolic dysfunction has been shown to have important prognostic value in AMI. [24][25][26][27] Using tissue Doppler imaging, myocardial velocities at the mitral annulus have been shown to be useful for quantifying global systolic and diastolic left ventricular function. E , in particular, reflects myocardial relaxation and is relatively load-independent.…”

Section: Ventricular Filling Pressures and Nt-pro Bnp Levelsmentioning

confidence: 99%

Correlation between NT‐pro BNP Levels and Early Mitral Annulus Velocity (E′) in Patients with Non–ST‐Segment Elevation Acute Coronary Syndrome

et al. 2008

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Section: Ventricular Filling Pressures and Nt-pro Bnp Levelsmentioning

confidence: 99%

Correlation between NT‐pro BNP Levels and Early Mitral Annulus Velocity (E′) in Patients with Non–ST‐Segment Elevation Acute Coronary Syndrome

et al. 2008

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“…The LV radionuclide activity-versus-time curve is a well-validated method for noninvasively determining the rate of volume changes in the LV with PER used as a measure of systolic function [14][15][16] and PFR established as a measure of diastolic function [17][18][19]. Doppler echocardiography has shown that the mitral valve inflow pattern may be normal when left atrial pressure is increased [20].…”

Section: Study Limitationsmentioning

confidence: 99%

Combined systolic and diastolic dysfunction in the presence of preserved left ventricular ejection fraction

Clements

2005

European J of Heart Fail

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Background: Heart failure with preserved left ventricular ejection fraction (LVEF) suggests isolated diastolic dysfunction. Aim: The purpose of this study was to determine if systolic and diastolic dysfunction occurred with preserved LVEF. Methods: Equilibrium resting radionuclide ventriculograms from 439 patients with an LVEF z0.50 were used to determine LV peak filling rate (PFR) and peak ejection rate ( Conclusions:The results indicate that a preserved LVEF was often associated with LV systolic dysfunction (enlarged LV end-systolic volume and low PER) and LV diastolic dysfunction (decreased PFR).

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“…PV loops contain a considerable amount of information about cardiac performance and its analysis can clarify pathophysiological mechanisms of HF, including HFpEF, myocardial and valvular heart diseases. [9][10][11] VA coupling, mechanical potential energy (PE), ventricular efficiency (𝜂) and other parameters obtained from PV loops can be used to evaluate cardiac function and provide guidance for clinical diagnosis. 12,13 Although a lot of literature has studied the relationship between PV loops and HF, it does not specifically quantify the importance of PV loops parameters to the classification of HF, that is give the importance ranking of the parameters.…”

Section: Introductionmentioning

confidence: 99%

“…Hence, PV loops have been the gold standard for assessing direct, real‐time heart function that may be characterized by ventricular changes in pressure and volume. PV loops contain a considerable amount of information about cardiac performance and its analysis can clarify pathophysiological mechanisms of HF, including HFpEF, myocardial and valvular heart diseases 9–11 . VA coupling, mechanical potential energy (PE), ventricular efficiency (η) and other parameters obtained from PV loops can be used to evaluate cardiac function and provide guidance for clinical diagnosis 12,13 .…”

Section: Introductionmentioning

confidence: 99%

Heart failure classifications via non‐invasive pressure volume loops from echocardiography

Liu,

Chen,

Xia

et al. 2023

Echocardiography

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BackgroundLeft ventricular pressure‐volume (LV‐PV) loops provide comprehensive characterization of cardiovascular system in both health and disease, which are the essential element of the hemodynamic evaluation of heart failure (HF). This study attempts to achieve more detailed HF classifications by non‐invasive LV‐PV loops from echocardiography and analyzes contribution of parameters to HF classifications.MethodsFirstly, non‐invasive PV loops are established by time‐varying elastance model where LV volume curves were extracted from apical‐four‐chambers view of echocardiographic videos. Then, 16 parameters related to cardiac structure and functions are automatically acquired from PV loops. Next, we applied six machine learning (ML) methods to divide four categories. On this premise, we choose the best performing classifier among machine learning approaches for feature ranking. Finally, we compare the contributions of different parameters to HF classifications.ResultsBy the experimental, the PV loops were successfully acquired in 1076 cases. When single left ventricular ejection fraction (LVEF) is used for HF classifications, the accuracy of the model is 91.67%. When added parameters extracted from ML‐derived LV‐PV loops, the classification accuracy is 96.57%, which improved by 5.1%. Especially, our parameters have a great improvement in the classification of non‐HF controls and heart failure with preserved ejection fraction (HFpEF).ConclusionsWe successfully presented the classification of HF by machine derived non‐invasive LV‐PV loops, which has the potential to improve the diagnosis and management of heart failure in clinic. Moreover, ventriculo‐arterial (VA) coupling and ventricular efficiency were demonstrated important factors for ML‐based HF classification model besides LVEF.

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Early patency of the infarct-related artery after myocardial infarction preserves diastolic filling

Cited by 5 publications

References 27 publications

Correlation between NT‐pro BNP Levels and Early Mitral Annulus Velocity (E′) in Patients with Non–ST‐Segment Elevation Acute Coronary Syndrome

Correlation between NT‐pro BNP Levels and Early Mitral Annulus Velocity (E′) in Patients with Non–ST‐Segment Elevation Acute Coronary Syndrome

Combined systolic and diastolic dysfunction in the presence of preserved left ventricular ejection fraction

Heart failure classifications via non‐invasive pressure volume loops from echocardiography

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