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atrial muscle

The sarcoplasmic reticulum plays a major role in isometric contraction in atrial muscle of yellowfin tuna

The sarcoplasmic reticulum plays a major role in isometric contraction in atrial muscle of yellowfin tuna

... Adrenergic desensitization could also account for the inability of adrenaline to offset the effects ryanodine. To test this possibility, we tested low frequencies (0.2 and 0.5 Hz) at the end of the force–frequency trial ...

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Cardio-Vascular.pdf

Cardio-Vascular.pdf

... •The electrical activity of the heart originates in the sino-atrial node. The impulse then rapidly spreads through the right atrium to the atrioventricular node. (It also spreads through the atrial ...

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Original Article Expression changes of small conductance Ca 2+ activated K channel in atrial myocytes caused by calumenin silence

Original Article Expression changes of small conductance Ca 2+ activated K channel in atrial myocytes caused by calumenin silence

... of atrial fibrillation included “Multiple-wavelet hypothesis” theory, “drive with fibrillation like conduction” theory, “pulmo- nary venous wave” theory and “atrial fibrillation begets atrial ...

6

Significance of Na+ current in the excitability of atrial and
ventricular myocardium of the fish heart

Significance of Na+ current in the excitability of atrial and ventricular myocardium of the fish heart

... excite atrial myocytes to produce fast but short-duration APs (Irisawa, 1978; Bouman and Jongsma, 1986; Golod et ...The atrial muscle excitation wave enters the ventricular myocardium, where it ...

9

Assessment of atrial regional and global electromechanical function by tissue velocity echocardiography: a feasibility study on healthy individuals

Assessment of atrial regional and global electromechanical function by tissue velocity echocardiography: a feasibility study on healthy individuals

... between atrial anatomy and its mechanical function has been poorly ...all atrial walls actively moved upwards from the region of the A-V ring at late diastole, with a reduction of this movement towards the ...

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Clinical implication of disturbed left atrial phasic functions in the heterogeneous population associated with hypertension or atrial fibrillation

Clinical implication of disturbed left atrial phasic functions in the heterogeneous population associated with hypertension or atrial fibrillation

... the atrial muscle, atrial shortening is augmented with chamber dilation until extreme dilation no longer provokes the Frank-Starling response ...

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Expression of SERCA and phospholamban in rainbow trout (Oncorhynchus mykiss) heart: comparison of atrial and ventricular tissue and effects of thermal acclimation

Expression of SERCA and phospholamban in rainbow trout (Oncorhynchus mykiss) heart: comparison of atrial and ventricular tissue and effects of thermal acclimation

... in atrial than ventricular tissue of the trout heart (Aho and Vornanen, ...that atrial muscle has faster myofibrils than ventricular muscle and that acclimation to cold increases the activity ...

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Assessment of left atrial mechanical functions and atrial electromechanical delay in Juvenile idiopathic arthritis by tissue Doppler echocardiography

Assessment of left atrial mechanical functions and atrial electromechanical delay in Juvenile idiopathic arthritis by tissue Doppler echocardiography

... peak atrial filling velocity (A; m/s), ratio of E to A (E/A), E ac- celeration time, E deceleration time (Edt; m/s), isovolumic relaxation time (IVRT) was measured in the apical five chamber view with the sample ...

8

Total average diastolic longitudinal displacement by colour tissue doppler imaging as an assessment of diastolic function

Total average diastolic longitudinal displacement by colour tissue doppler imaging as an assessment of diastolic function

... Even though it is agreed that no single current echocardiographic measure is sufficient for a diagnosis of LV diastolic dysfunction, the use of algorithms of many different echocardiographic parameters is also ...

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Original Article Fibroblast growth factor-21 is positively associated with atrial fibrosis in atrial fibrillation patients with rheumatic heart disease

Original Article Fibroblast growth factor-21 is positively associated with atrial fibrosis in atrial fibrillation patients with rheumatic heart disease

... left atrial diame- ter, which indicated that FGF-21 may be an independent risk factor for AF ...with atrial fibrosis as a biological indicator in patients with atrial fibrillation and rheumatic heart ...

8

Case series of cardiac myxomas: A single institutional experience

Case series of cardiac myxomas: A single institutional experience

... left atrium posterior to the interatrial groove. The point of attachment of the tumour to the atrium was determined by inspection and exploration of the tumour with the index finger. An oblique right atriotomy was made ...

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Atrial Fibrillation Induced by Commotio Cordis Secondary to a Blunt Chest Trauma in a Teenage Boy

Atrial Fibrillation Induced by Commotio Cordis Secondary to a Blunt Chest Trauma in a Teenage Boy

... (no syncope, no dizziness, no hemodynamic compromise) the occurrence of “atrial commotio cordis ” is underreported. Moreover, it is plausible that “ lone AF ” reported in otherwise healthy athletes could be ...

5

Morphology and Morphometric Analysis of the Human Mitral Valve Complex.

Morphology and Morphometric Analysis of the Human Mitral Valve Complex.

... papillary muscle bellies were mostly intraluminal in 14% and 11%, mostly intraluminal with the tip anchored in 19% and 28%, equally sessile and intraluminal in ...papillary muscle bellies arose from the ...

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Autocrine and paracrine effects of atrial natriuretic peptide gene transfer on vascular smooth muscle and endothelial cellular growth

Autocrine and paracrine effects of atrial natriuretic peptide gene transfer on vascular smooth muscle and endothelial cellular growth

... endothelial cells and vascular smooth muscle cells (VSMC) in culture. However, it is not known if the locally synthesized ANP would act similarly. Because cultured endothelial cells and VSMC have lost the ability ...

7

Feasibility and outcomes of combined transcatheter aortic valve replacement with other structural heart interventions in a single session: a matched cohort study

Feasibility and outcomes of combined transcatheter aortic valve replacement with other structural heart interventions in a single session: a matched cohort study

... frugal manner without general anaesthesia or TEE guid- ance, that is, under fl uoroscopy only: after accessing the left atrium through a trans-septal puncture or passage through a pre-existing PFO or ASD, the device size ...

7

Exploiting periodicity to extract the atrial activity in atrial arrhythmias

Exploiting periodicity to extract the atrial activity in atrial arrhythmias

... We will use simulated and real ECG data in order to test the performance of the algorithms under controlled (synthetic ECG) and real situations (real ECG). The simulated signals come from [11] (see Section 4.1 in [11] ...

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Assessment of atrial fibrosis for the rhythm control of atrial fibrillation

Assessment of atrial fibrosis for the rhythm control of atrial fibrillation

... left atrial fibrosis could have important clinical ...and atrial fibrosis were increased by ventricular tachypacing but this could be attenuated with ...reduced atrial fibrosis, conduction delay and ...

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Atrial Overdrive Pacing for Conversion of Atrial Flutter in Children

Atrial Overdrive Pacing for Conversion of Atrial Flutter in Children

... sustained atrial fibrillation or local areas of unrec- ognized atrial fibrillation, both resistant to conver- sion by pacing techniques.2 Although patients 3 and 8 manifested transient a[r] ...

9

Understanding Atrial Fibrillation/ Atrial Flutter (AF/AFL)

Understanding Atrial Fibrillation/ Atrial Flutter (AF/AFL)

... was in patients with recent myocardial infarction (DIAMOND MI) (of whom 40% had NYHA Class III or IV heart failure). Both groups were at relatively high risk of sudden death. The DIAMOND trials were intended to determine ...

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Left atrial appendage closure devices for cardiovascular risk reduction in atrial fibrillation patients

Left atrial appendage closure devices for cardiovascular risk reduction in atrial fibrillation patients

... Abstract: Atrial fibrillation (AF) is the most common sustained arrhythmia in clinical ...of atrial thrombi in nonvalvular AF patients originate from the left atrial appendage, leading to the ...

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