Isometric and Dynamic Contractile Properties of Porcine Skinned Cardiac Myocytes After Stunning | Circulation Research
myocardial contraction. *myocardial ischemia. *myocardial reperfusion injury. Myocardial stunning is a form of reversible ... Effect of global myocardial stunning on Ca2+-sensitive myofibrillar ATPase activity and creatine kinase kinetics. Am J Physiol. ... In group 4, myocardial oxygen demand during ischemia was further increased by atrial pacing at ≈150 bpm. Group 4 is the only ... Marban E. Myocardial stunning and hibernation: the physiology behind the colloquialisms. Circulation. 1991;83:681-688. ...http://circres.ahajournals.org/content/77/5/964
Impact of Cardiac Contractility Modulation on Left Ventricular Global and Regional Function and Remodeling | JACC:...
Improvement in Regional Myocardial Contraction But Not Relaxation After CCM Therapy Defined by Tissue Doppler Imaging ... Myocardial contraction was improved in all LV walls, including sites remote from CCM delivery (all p , 0.05); hence, the mean ... Myocardial performance index was also calculated by dividing the sum of isovolumic contraction and relaxation periods by the ... and it had no impact on the degree of synchrony of myocardial contraction. Additional studies are underway to assess the long- ...http://imaging.onlinejacc.org/content/2/12/1341
Myocardial reverse remodeling after pressure unloading is associated with maintained cardiac mechanoenergetics in a rat model...
... improvement in Eff implies that a greater portion of the total myocardial oxygen consumption is devoted to cardiac contractions ... Novel Mechanisms of Myocardial Ischemia, Ischemia - Reperfusion, and Protection by Myocardial Conditioning. Deadline February 1 ... Hypertensive left ventricular hypertrophy is associated with abnormal myocardial fatty acid metabolism and myocardial ... attenuated myocardial fibrosis) and preserved cardiac function. However, the effect of myocardial reverse remodeling on cardiac ...http://ajpheart.physiology.org/content/311/3/H592
Single-Beat Estimation of End-Systolic Elastance Using Bilinearly Approximated Time-Varying Elastance Curve | Circulation
... during the isovolumic contraction phase. The end of the isovolumic contraction phase (tad) is defined as the moment when the ... Mirsky et al15 16 developed a single-beat method to assess myocardial contractility by fitting a model to late systolic data ... where Ees(SB) is the single-beat estimation of Ees, Pad is the pressure at the end of isovolumic contraction, Ped is end- ... where Ead is the elastance value at the end of the isovolumic contraction phase, Eed is end-diastolic elastance, PEP is the ...http://circ.ahajournals.org/content/102/16/1983
Frontiers | A N-terminal truncated intracellular isoform of matrix metalloproteinase-2 impairs contractility of mouse...
Impaired muscle activation with decreased Ca2+ transients may play a role in the reduced myocardial contraction caused by NTT- ... The major findings of this study were that transgenic expression of NTT-MMP-2 impaired myocardial contraction, and that ... These findings are in contrast to our previous findings that FL-MMP-2 expression resulted in decreased myocardial contraction ... Cell contraction and Fura-2 fluorescence were monitored using an IonOptix Hyperswitch system (Milton, MA). Cell contraction was ...https://www.frontiersin.org/articles/10.3389/fphys.2014.00363/full
Myocardial contraction Protocols and Video Articles
A Model of Post-myocardial Infarction Remodelling and Heart Failure', 'Analysis of Tubular Membrane Networks in Cardiac ... In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed ... Transthoracic Speckle Tracking Echocardiography for the Quantitative Assessment of Left Ventricular Myocardial Deformation', ' ... Assessment of Myofilament Ca2+ Sensitivity Underlying Cardiac Excitation-contraction Coupling', ' ...https://www.jove.com/search?q=myocardial%20contraction
Specific inhibition by burimamide of histamine effects on myocardial contraction and cyclic AMP | SpringerLink
... the increases in isotonic contraction and in cyclic AMP, produced by 2 μg of histamine were significantly and almost completely ... Specific inhibition by burimamide of histamine effects on myocardial contraction and cyclic AMP. ... Heart-Contraction Cyclic AMP Histamine Burimamide This work was supported by grant Nr. 1301 of the Fonds zur Förderung der ... Klein, I., Levey, G. S.: Activation of myocardial adenylate cyclase by histamine in guinea-pig, cat, and human heart. J. clin. ...https://link.springer.com/article/10.1007/BF00499184
Abstract 2829: Decreased Left Ventricular Myocardial Contraction Fraction Predicts Excess Cardiovascular Morbidity and...
INTRODUCTION: Myocardial contraction fraction (MCF) is the ratio of left ventricular (LV) stroke volume to myocardial volume ... LV and myocardial volumes were determined from volumetric breathold-cine SSFP CMR datasets. MACE were: CV death, myocardial ... Abstract 2829: Decreased Left Ventricular Myocardial Contraction Fraction Predicts Excess Cardiovascular Morbidity and ... Abstract 2829: Decreased Left Ventricular Myocardial Contraction Fraction Predicts Excess Cardiovascular Morbidity and ...http://circ.ahajournals.org/content/118/Suppl_18/S_782.4
Reversal of Isoflurane-Induced Depression of Myocardial Contraction by Nitroxyl via Myofilament Sensitization to Ca2+ | Journal...
Reversal of Isoflurane-Induced Depression of Myocardial Contraction by Nitroxyl via Myofilament Sensitization to Ca2+. Wengang ... The effects of inhalational anesthetic agents on myocardial contraction have been the focus of extensive investigations for ... Reversal of Isoflurane-Induced Depression of Myocardial Contraction by Nitroxyl via Myofilament Sensitization to Ca2+ ... all together these data strongly support our initial hypothesis that the ISO-induced negative effect on myocardial contraction ...http://jpet.aspetjournals.org/content/339/3/825.long
Severity of contraction abnormalities after acute myocardial infarction in man: response to nitroglycerin. | Circulation
Severity of contraction abnormalities after acute myocardial infarction in man: response to nitroglycerin.. K B Ramanathan, M M ... Severity of contraction abnormalities after acute myocardial infarction in man: response to nitroglycerin. ... Severity of contraction abnormalities after acute myocardial infarction in man: response to nitroglycerin. ... Severity of contraction abnormalities after acute myocardial infarction in man: response to nitroglycerin. ...http://circ.ahajournals.org/content/60/6/1230
Assessment of left ventricular long axis contraction can detect early myocardial dysfunction in asymptomatic patients with...
Assessment of left ventricular long axis contraction can detect early myocardial dysfunction in asymptomatic patients with ... Assessment of left ventricular long axis contraction can detect early myocardial dysfunction in asymptomatic patients with ... and short axis contraction. However, patients in group II had reduced long axis contraction compared with group I: peak ... From the spectral traces we measured peak velocities during early filling (ETDE) and atrial contraction (ATDE). The ETDE:ATDE ...http://heart.bmj.com/content/85/1/30
Quantification of Myocardial Segmental Function in Acute and Chronic Ischemic Heart Disease and Implications for Cardiovascular...
Segmental myocardial contraction. Assessment of regional myocardial function can be improved by characterization of segmental ... Myocardial contraction is a complex process that occurs in 4 dimensions in both a global and segmental domain. Since segmental ... These newer measures of segmental myocardial contraction have been used in many different ways to evaluate patients with ... This may be particularly true in the setting of acute myocardial infarction where hyperdynamic contraction of remote regions ...http://imaging.onlinejacc.org/content/4/6/671
Biochemistry Flashcards by Kedar Sankholkar | Brainscape
does angiotensin II induce myocardial contraction? no 5 what are adrenergic receptors all coupled to? ...https://www.brainscape.com/flashcards/biochemistry-2769835/packs/4390139
Chapter 5 - Regulation Of The Heart Flashcards by Tanaka Makamure | Brainscape
The ventricular filling pressure just before ventricular contraction constitutes the preload for the myocardial fibers in the ... 1. progressive increase in developed force induced by a change in contraction frequency is known as the staircase, or Treppe, ...https://www.brainscape.com/flashcards/chapter-5-regulation-of-the-heart-6145395/packs/9460358
Functional Myocardial Perfusion Abnormality Induced by Left Ventricular Asynchronous Contraction: Experimental Study Using...
Myocardial perfusion was assessed by using myocardial contrast echocardiography (MCE) in dogs with asynchronous contraction ... Functional Myocardial Perfusion Abnormality Induced by Left Ventricular Asynchronous Contraction: Experimental Study Using ... Functional Myocardial Perfusion Abnormality Induced by Left Ventricular Asynchronous Contraction: Experimental Study Using ... Functional Myocardial Perfusion Abnormality Induced by Left Ventricular Asynchronous Contraction: Experimental Study Using ...http://www.onlinejacc.org/content/29/7/1632
Late effects of cardiomyoplasty on left v... & related info | Mendeley
BACKGROUND: Dynamic cardiomyoplasty is a relatively new surgical procedure proposed for treatment of severe myocardial failure ... BACKGROUND: Dynamic cardiomyoplasty is a relatively new surgical procedure proposed for treatment of severe myocardial failure ... and an increase of flow area during atrial contraction (39 +/- 4 versus 88 +/- 9 mL, P = .001). CONCLUSIONS: Our detailed ...https://www.mendeley.com/research-papers/late-effects-cardiomyoplasty-left-ventricular-mechanics-diastolic-filling/
Constitutive phosphorylation of cardiac myosin regulatory light chain prevents development of hypertrophic cardiomyopathy in...
60 APPLIED LIFE SCIENCES; cardiomyopathy; hemodynamics; myocardial contraction; X-ray structure; myosin RLC. ...https://www.osti.gov/scitech/biblio/1212938-constitutive-phosphorylation-cardiac-myosin-regulatory-light-chain-prevents-development-hypertrophic-cardiomyopathy-mice
Invasive hemodynamic assessment in heart ... & related info | Mendeley
Myocardial Contraction/*physiology. *Stroke Volume. *Systole/physiology. *Ventricular Function, Left/physiology. *Ventricular ...https://www.mendeley.com/research-papers/invasive-hemodynamic-assessment-heart-failure/
C-Cardiac Muscle Myocyte Structure & Function Flashcards by MO ROUTH | Brainscape
The effect of increasing preload on force of contraction:. the greater the volume of blood entering the heart during diastole ( ... The triggering of force generation and contraction is governed by Ca2+ fluxes determined by the dynamics of electrochemical ... actin (thin) filaments of muscle fibres slide past the myosin (thick) filaments during muscle contraction, while at constant ... end-diastolic volume), the greater the volume of blood ejected during systolic contraction (stroke volume) and vice versa.. ...https://www.brainscape.com/flashcards/c-cardiac-musclemyocyte-structure-amp-fun-3555689/packs/5457783
Clinical Summaries | Circulation
Left ventricular contraction pattern by strain was assessed as time from the ECG Q wave to maximum myocardial shortening in 16 ... Transmural Differences in Myocardial Contraction in Long-QT Syndrome : Mechanical Consequences of Ion Channel Dysfunction. The ... Transmural Differences in Myocardial Contraction in Long-QT Syndrome : Mechanical Consequences of Ion Channel Dysfunction ... Transmural Differences in Myocardial Contraction in Long-QT Syndrome : Mechanical Consequences of Ion Channel Dysfunction ...http://circ.ahajournals.org/content/122/14/1351
Evaluation of left ventricular torsion by cardiovascular magnetic resonance.
Torsion gives useful additional information about myocardial tissue performance in both systolic and diastolic fu ... Myocardial Contraction*. Systole. Torsion Abnormality / complications, diagnosis*, physiopathology. Ventricular Dysfunction, ... Leung MC CBG,Carbone A,Young AA,Cowan BR,Pontre B,Teo K,St Pierre T,Worthley SG,Myocardial T2* affects 3D MRI myocardial strain ... Cardiac systolic rotation and contraction before and after valve replacement for aortic stenosis: a myocardial tagging study ...http://www.biomedsearch.com/nih/Evaluation-left-ventricular-torsion-by/22827856.html
Cardiac phase-dependent time normalization reduces load dependence of time-varying elastance.
Myocardial Contraction*. Sheep. Signal Processing, Computer-Assisted. Stroke Volume*. Time Factors. Ventricular Function, Left* ... Next Document: Midkine prevents ventricular remodeling and improves long-term survival after myocardial infarction.. ... isovolumic contraction, ejection, isovolumic relaxation, filling) individually. With this normalization, isophase lines are ...http://www.biomedsearch.com/nih/Cardiac-phase-dependent-time-normalization/19060125.html
Sudden death in hypertrophic and dilated cardiomyopathy.
Myocardial Contraction. Physical Exertion. Prognosis. Risk Factors. Survival Rate. Tachycardia / mortality. From MEDLINE®/ ... Since exercise-induced myocardial ischemia rather than ventricular arrhythmias appears to be the more likely mechanism for SD ... 15101025 - Myocardial perfusion reserve and oxidative metabolism contribute to exercise capacity i.... 2738255 - Left ...http://www.biomedsearch.com/nih/Sudden-death-in-hypertrophic-dilated/2632825.html
A new quantification method for mechanical dyssynchrony with three-dimensional echocardiography; segmental time and volume loss...
Myocardial Contraction. Predictive Value of Tests. Sensitivity and Specificity. Software. Stroke Volume. Time Factors. ... delay between contraction of the earliest and latest segment (L-E); and standard deviation of segmental time-to-contraction ( ... The rationale of Pre- and Post-STV is that they do not only assess time to contraction but also segmental LV function. This way ... The abovementioned methods are based on measurement of timing of contraction of individual LV segments, but it appears that ...http://www.biomedsearch.com/nih/new-quantification-method-mechanical-dyssynchrony/22302648.html
Reproducibility of dobutamine digital stress echocardiography.
Myocardial Contraction. Myocardial Infarction / physiopathology, ultrasonography. Observer Variation. Reproducibility of ... 9429826 - Dobutamine echocardiography versus nuclear cardiac imaging for evaluation of myocardial.... 12053386 - Identification ... 10922446 - Noninvasive risk stratification in women with uncomplicated acute myocardial infarction.. 10946036 - Neuroadrenergic ... in 15 patients with previous myocardial infarction at a mean of 19 days apart. Two observers assessed the wall motion using a ...http://www.biomedsearch.com/nih/Reproducibility-dobutamine-digital-stress-echocardiography/9168356.html