Results 61 to 70 of about 67,999 (231)

Novel imaging revealing inner dynamics for cardiovascular waveform analysis via unsupervised manifold learning [PDF]

open access: yesarXiv, 2019
Cardiovascular waveforms contain information for clinical diagnosis. By "learning" and organizing the subtle change of waveform morphology from large amounts of raw waveform data, unsupervised manifold learning helps delineate a high-dimensional structure and display it as a novel three-dimensional (3D) image.
arxiv  

Intramyocardial Hematoma After Percutaneous Coronary Intervention for Chronic Total Occlusion: Two Case Reports

open access: yesCatheterization and Cardiovascular Interventions, EarlyView.
ABSTRACT Percutaneous coronary intervention (PCI) for chronic total occlusion (CTO) is an extremely challenging procedure, with intramyocardial hematoma (IMH) being one of its rare yet severe complications. In this report, we detail two cases of IMH occurring during PCI for CTO, emphasizing the importance of avoiding catheter pressure entrapment and ...
Xuefei Mu   +3 more
wiley   +1 more source

Effect of Glucose - Insulin - Potassium (Gik) Solution on Short Term Prognosis of Unstable Angina

open access: yesMajallah-i Dānishgāh-i ’Ulūm-i Pizishkī-i Shahīd Ṣadūqī Yazd, 2007
Introduction: Unstable angina as a clinical condition includes a major group of patients manifested with acute coronary syndrome. Misdiagnosis of this clinical syndrome causes myocardial infarction (MI) and death.
A Azimi   +4 more
doaj  

Echocardiography in Unstable Angina

open access: yesCardiology, 1981
This study was undertaken to determine whether abnormalities on the echocardiograms of patients with unstable angina have any prognostic significance. 27 male patients, mean age 53 years, who fulfilled criteria for unstable angina and who responded to medical therapy, had echocardiograms within 48 h of admission and at discharge.
J. V. Nixon   +3 more
openaire   +3 more sources

Diagnostic Accuracy of Angiography‐Derived Murray Law‐Based Quantitative Flow Ratio (μQFR) Versus Pressure‐Derived Fractional Flow Reserve (FFR) in Moderate to Severe Calcified Coronary Lesions—The DIAMOND Study

open access: yesCatheterization and Cardiovascular Interventions, EarlyView.
ABSTRACT Background Murray law‐based Quantitative Flow Ratio (μQFR) is an innovative AI‐driven method for evaluating coronary lesions using contrast flow velocity estimates. Unlike traditional approaches, μQFR does not require pressure wires or hyperemia induction.
Wesley Bennar   +9 more
wiley   +1 more source

FUNCTIONAL CONDITION OF THE MYOCARDIUM IN ACUTE CORONARY SYNDROME

open access: yesРоссийский кардиологический журнал, 2001
The study included 127 patients with various courses of angina and was targeted at the evaluation of myocardial functional condition with the usage of Doppler echo and Holter monitoring.
A. N. Zakirova   +2 more
doaj  

Extracellular Vesicle cystatin c is associated with unstable angina in troponin negative patients with acute chest pain.

open access: yesPLoS ONE, 2020
BackgroundDespite the use of high-sensitive cardiac troponin there remains a group of high-sensitive cardiac troponin negative patients with unstable angina with a non-neglectable risk for future adverse cardiovascular events, emphasising the need for ...
Mirthe Dekker   +10 more
doaj   +1 more source

Sub-additive unstable topological pressure on saturated subsets [PDF]

open access: yesarXiv, 2022
In this paper, we continue our investigation on sub-additive pressures for $C^1$-smooth partially hyperbolic diffeomorphisms. Under the assumption of unstable almost product property, we show that the unstable Bowen topological pressure on the saturated set of a given non-empty compact connected set of invariant measures equals the infimum of the ...
arxiv  

Non-Linear Dynamics In Patients With Stable Angina Pectoris [PDF]

open access: yesarXiv, 2001
We investigate the clinical and prognostic significance of fractal dimension and detrended fluctuation analysis by comparing the group of patients with stable angina pectoris without previous myocardial infarction with the group of age-matched healthy controls.
arxiv  

Association of the 894G>T polymorphism of the endothelial constitutive nitric oxide synthase gene with unstable angina

open access: yesBrazilian Journal of Medical and Biological Research, 2007
The 894G>T polymorphism of the endothelial constitutive nitric oxide synthase gene consists of the substitution of a guanine base by a thymine at the 894th nucleotide of the gene. An association of this polymorphism with acute coronary syndromes has been
G.R. Iturry-Yamamoto   +4 more
doaj  

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