Results 31 to 40 of about 177,330 (252)

Diastolic Dysfunction in Neonates With Hypoxic-Ischemic Encephalopathy During Therapeutic Hypothermia: A Tissue Doppler Study

open access: yesFrontiers in Pediatrics, 2022
Diastolic dysfunction often complicates myocardial ischemia with increased mortality rates. However, less is known about diastolic function after perinatal asphyxia in neonates with hypoxic-ischemic encephalopathy (HIE) during therapeutic hypothermia (TH)
Maria Jose Rodriguez   +4 more
doaj   +1 more source

The Impact of Delivery Type on Ventricular Performances of Healthy Neonates

open access: yesGynecology Obstetrics & Reproductive Medicine, 2020
Objective: The present study aims to evaluate how the mode of delivery affects the alterations in myocar­dial functions of healthy newborns within the first month of life.
Erman Cilsal
doaj   +1 more source

Association between Functional Variables and Heart Failure after Myocardial Infarction in Rats

open access: yesArquivos Brasileiros de Cardiologia, 2016
Background: Heart failure prediction after acute myocardial infarction may have important clinical implications. Objective: To analyze the functional echocardiographic variables associated with heart failure in an infarction model in rats. Methods: The
Bertha F. Polegato   +9 more
doaj   +1 more source

Is High Temporal Resolution Achievable for Paediatric Cardiac Acquisitions during Several Heart Beats? Illustration with Cardiac Phase Contrast Cine-MRI. [PDF]

open access: yesPLoS ONE, 2015
During paediatric cardiac Cine-MRI, data acquired during cycles of different lengths must be combined. Most of the time, Feinstein's model is used to project multiple cardiac cycles of variable lengths into a mean cycle.To assess the effect of Feinstein ...
Laurent Bonnemains   +5 more
doaj   +1 more source

Validity of tissue Doppler markers in the assessment of pulmonary hypertension

open access: yesThe Egyptian Heart Journal, 2014
The accuracy of tissue Doppler parameters of right ventricular function including Isovolumic relaxation time (IVRT) and Isovolumic contraction time (IVCT) have not been validated sufficiently in pulmonary hypertensive patients (pts).
Abdo Nasr   +3 more
doaj   +1 more source

Myocardial Motion Analysis for Determination of Tei-Index of Human Heart

open access: yesSensors, 2010
The Tei index, an important indicator of heart function, lacks a direct method to compute because it is difficult to directly evaluate the isovolumic contraction time (ICT) and isovolumic relaxation time (IRT) from which the Tei index can be obtained. In
Jianwei Zhang   +6 more
doaj   +1 more source

Relation between intraventricular pressure and volume in diastole [PDF]

open access: yes, 1990
The pressure-volume curves for 10 patients with various types of heart disease were studied throughout mid to late diastole when both pressure and volume were increasing.
Dawson, JR   +3 more
core   +2 more sources

Heterogeneity of the regional isovolumic relaxation time of the left ventricular by pulsed doppler tissue imaging

open access: closedJournal of the American College of Cardiology, 1998
M. Moreno   +5 more
openaire   +3 more sources

Will the real ventricular architecture please stand up? [PDF]

open access: yes, 2017
Ventricular twisting, essential for cardiac function, is attributed to the contraction of myocardial helical fibers. The exact relationship between ventricular anatomy and function remains to be determined, but one commonly used explanatory model is the ...
Hoffman, Julien IE
core   +1 more source

Reference Values and Repeatability of Pulsed Wave Doppler Echocardiography Parameters in Normal Donkeys

open access: yesAnimals, 2022
In the present study, thirty clinically healthy donkeys were used to establish the reference values and repeatability for Pulsed Wave Doppler echocardiographic variables of the mitral valve, aortic valve and myocardial performance.
Mohamed Marzok   +7 more
doaj   +1 more source

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