Spotlight on atrial fibrillation—the `complete arrhythmia`
... conduction delays and fragmented electrograms are more common in AF. Brundel et al. discuss the available information regarding molecular mechanisms of remodeling in human AF [33]. The evidence for ion-channel remodeling at the mRNA and protein levels is reviewed, as are changes in proteins determin ...
... conduction delays and fragmented electrograms are more common in AF. Brundel et al. discuss the available information regarding molecular mechanisms of remodeling in human AF [33]. The evidence for ion-channel remodeling at the mRNA and protein levels is reviewed, as are changes in proteins determin ...
Print - Circulation Research
... facilitate the induction of sustained AV nodal reentrant tachycardia,33 and in some patients with AV nodal reentrant tachycardia, programmed stimulation fails to induce the tachycardia unless isoproterenol is infused.34-36 ,-Blockade slows AV nodal conduction37 and can prevent the induction3839 and ...
... facilitate the induction of sustained AV nodal reentrant tachycardia,33 and in some patients with AV nodal reentrant tachycardia, programmed stimulation fails to induce the tachycardia unless isoproterenol is infused.34-36 ,-Blockade slows AV nodal conduction37 and can prevent the induction3839 and ...
Heart Rate Variability Analysis System
... between 0.0033 and 0.04 Hz. Generally it is known this parameter indicates overall activity of various slow mechanisms of sympathetic function. Very Low Frequency band is calculated in milliseconds squared (ms2). Low Frequency (LF) - Low Frequency is a band of power spectrum range between 0.04 and 0 ...
... between 0.0033 and 0.04 Hz. Generally it is known this parameter indicates overall activity of various slow mechanisms of sympathetic function. Very Low Frequency band is calculated in milliseconds squared (ms2). Low Frequency (LF) - Low Frequency is a band of power spectrum range between 0.04 and 0 ...
RegMed_Article File - Spiral
... improved vascularization of the infarct region and reduced infarct expansion leading to reduced remodelling ...
... improved vascularization of the infarct region and reduced infarct expansion leading to reduced remodelling ...
Adverse Effect of Ventricular Pacing on Heart Failure and
... time to event as the dependent variable and Cum%VP as a timedependent covariate. HFH models were extended to include multiple HFHs by use of Cox models that allow multiple events per patient.6 Both unadjusted models (Cum%VP as the only predictor) and adjusted models (adjusted for other known baselin ...
... time to event as the dependent variable and Cum%VP as a timedependent covariate. HFH models were extended to include multiple HFHs by use of Cox models that allow multiple events per patient.6 Both unadjusted models (Cum%VP as the only predictor) and adjusted models (adjusted for other known baselin ...
Pathophysiological role and clinical relevance of cytokines
... heterogeneous and the underlying mechanism may differ greatly from one cause to another and between the young and the elderly. The portfolio of cytokines includes at least tumor necrosis factor α and interleukin-6 in the cardiovascular system. These have been referred to as proinflammatory cytokines ...
... heterogeneous and the underlying mechanism may differ greatly from one cause to another and between the young and the elderly. The portfolio of cytokines includes at least tumor necrosis factor α and interleukin-6 in the cardiovascular system. These have been referred to as proinflammatory cytokines ...
New methods of studying affections of the heart.
... dlsease, I had noted an increase in the a-c interval for some years. During labour it frequently happens that the pulse becomes irregular, the irregularity often being of a respiratory type. The radial tracing in Fig. 5 shows such an irregularity. The tracing of the carotid and jugular slhows a rise ...
... dlsease, I had noted an increase in the a-c interval for some years. During labour it frequently happens that the pulse becomes irregular, the irregularity often being of a respiratory type. The radial tracing in Fig. 5 shows such an irregularity. The tracing of the carotid and jugular slhows a rise ...
Recommendations for interpretation of 12
... the definition of sinus arrhythmia used by the various authors. Like bradycardia, sinus arrhythmia is believed to reflect an increased vagal tone. ...
... the definition of sinus arrhythmia used by the various authors. Like bradycardia, sinus arrhythmia is believed to reflect an increased vagal tone. ...
High sugar intake exacerbates cardiac reperfusion injury in perinatal
... Perinatal taurine depletion and high sugar diets blunted baroreflex function and heightens sympathetic nerve activity in adult rats. Cardiac ischemia/reperfusion also produces these disorders and taurine treatment appears to improve these effects. This study tests the hypothesis that perinatal tauri ...
... Perinatal taurine depletion and high sugar diets blunted baroreflex function and heightens sympathetic nerve activity in adult rats. Cardiac ischemia/reperfusion also produces these disorders and taurine treatment appears to improve these effects. This study tests the hypothesis that perinatal tauri ...
Intermediate-Signal-Intensity Late Gadolinium
... without these arrhythmias. In HCM patients with either nonsustained ventricular tachycardia, couplets, or premature ventricular contractions, the extent of intermediate LGE-SI exceeded that of high LGE-SI (17⫾7 versus 15⫾6 g, 16⫾10 versus 14⫾9 g, and 13⫾8 versus 12⫾7 g, respectively; P⫽0.01– 0.04). ...
... without these arrhythmias. In HCM patients with either nonsustained ventricular tachycardia, couplets, or premature ventricular contractions, the extent of intermediate LGE-SI exceeded that of high LGE-SI (17⫾7 versus 15⫾6 g, 16⫾10 versus 14⫾9 g, and 13⫾8 versus 12⫾7 g, respectively; P⫽0.01– 0.04). ...
reperfusion dysrhythmia - McGraw Hill Higher Education
... © 2013 The McGraw-Hill Companies, Inc. All rights reserved. ...
... © 2013 The McGraw-Hill Companies, Inc. All rights reserved. ...
Your guide to heart failure
... Over time: The heart muscle weakens and may not be strong enough to pump enough blood to meet all your body’s needs, particularly during exercise. It is at this stage that you may notice symptoms with activity. The heart keeps pumping, but with much less power and efficiency. The heart may beat fast ...
... Over time: The heart muscle weakens and may not be strong enough to pump enough blood to meet all your body’s needs, particularly during exercise. It is at this stage that you may notice symptoms with activity. The heart keeps pumping, but with much less power and efficiency. The heart may beat fast ...
Carotid Sinus Syndrome as a Manifestation of Head and Neck Cancer
... Efferent fibers transmit impulses through sympathetic adrenergic nerves and the Vagus nerve, affecting the sinus node (of the heart), AV node and other blood vessels in the body [2]. ...
... Efferent fibers transmit impulses through sympathetic adrenergic nerves and the Vagus nerve, affecting the sinus node (of the heart), AV node and other blood vessels in the body [2]. ...
CCS Consensus Cover.qxd
... common clinical conditions such as aging, thromboembolism, hypertension, valvular heart disease and heart failure and is responsible for substantial morbidity and increased mortality. Consequently, AF places a tremendous burden on our health care resources. Thus, the management of AF is complex and ...
... common clinical conditions such as aging, thromboembolism, hypertension, valvular heart disease and heart failure and is responsible for substantial morbidity and increased mortality. Consequently, AF places a tremendous burden on our health care resources. Thus, the management of AF is complex and ...
Automated External Defibrillators (AEDs): Guidelines For Recreation
... electrical chaos, and allow the normal electrical sequencing of the heart and pumping action to resume. An AED is designed for use by a layperson or a "first responder" (a person with AED training). No “medical” training is required to use an AED. ...
... electrical chaos, and allow the normal electrical sequencing of the heart and pumping action to resume. An AED is designed for use by a layperson or a "first responder" (a person with AED training). No “medical” training is required to use an AED. ...
CPR Course
... and chaotic quivering of the ventricles, which can be triggered by episodes of VT. ...
... and chaotic quivering of the ventricles, which can be triggered by episodes of VT. ...
Preview of the Medifocus Guidebook on: Atrial Fibrillation Updated
... two upper chambers are called the left and the right atria and the two lower chambers called the right and left ventricles. The right side of the heart pumps blood to the lungs to pick up oxygen, while the left side of the heart pumps blood rich in oxygen to all parts of the body. The left ventricle ...
... two upper chambers are called the left and the right atria and the two lower chambers called the right and left ventricles. The right side of the heart pumps blood to the lungs to pick up oxygen, while the left side of the heart pumps blood rich in oxygen to all parts of the body. The left ventricle ...
age changes in the structure of human atrioventricular annuli
... Anatomical features of the annuli such as circumference, organization of connective tissue fibers, myocardium and cellularity may predispose to annular insufficiency and valvular incompetence. These pathologies increase with age and are more common in females, although the anatomical basis for this ...
... Anatomical features of the annuli such as circumference, organization of connective tissue fibers, myocardium and cellularity may predispose to annular insufficiency and valvular incompetence. These pathologies increase with age and are more common in females, although the anatomical basis for this ...
Inotropic, chronotropic, and dromotropic effects - AJP
... CVS and AVPS were not affected by trimethaphan injected into the SAPS locus. We also studied the effects of lidocaine injected into the SAPS locus on the cardiac responses to CVS, SAPS, or AVPS (Fig. 5). Topical injection of lidocaine at a dose of 3.0 mg in a volume of 0.2 ml saline into the SAPS lo ...
... CVS and AVPS were not affected by trimethaphan injected into the SAPS locus. We also studied the effects of lidocaine injected into the SAPS locus on the cardiac responses to CVS, SAPS, or AVPS (Fig. 5). Topical injection of lidocaine at a dose of 3.0 mg in a volume of 0.2 ml saline into the SAPS lo ...
Julia AMoffitt CV short - St. Ambrose University
... Northern Illinois University, “Cardiovascular deconditioning, depression and cardiac arrhythmias: Mechanisms and targets.” DMU Research Symposium: “Hindlimb unloading results in an increased predisposition to cardiac arrhythmias and changes in left ventricular connexin43 expression.” Science Center ...
... Northern Illinois University, “Cardiovascular deconditioning, depression and cardiac arrhythmias: Mechanisms and targets.” DMU Research Symposium: “Hindlimb unloading results in an increased predisposition to cardiac arrhythmias and changes in left ventricular connexin43 expression.” Science Center ...
Heart Rate Monitoring and PQRST Detection Based on
... Whether there has been a prior heart attack. Whether there may be coronary artery disease. Whether there are “conduction abnormalities” (abnormalities in how the electrical impulse spreads across the heart). All of these traits can be significant and important.When the ECG indicates a heart at ...
... Whether there has been a prior heart attack. Whether there may be coronary artery disease. Whether there are “conduction abnormalities” (abnormalities in how the electrical impulse spreads across the heart). All of these traits can be significant and important.When the ECG indicates a heart at ...
Provocation of Ventricular Ectopy by Cheyne-Stokes
... RR interval.15 The frequency of VPB during apneas and hypopneas was compared with that during hyperpneas. Because there is a tendency for mean HR to increase during hyperpnea, this comparison was also performed with VPB frequency expressed per 100 heart beats in order to correct for differences in H ...
... RR interval.15 The frequency of VPB during apneas and hypopneas was compared with that during hyperpneas. Because there is a tendency for mean HR to increase during hyperpnea, this comparison was also performed with VPB frequency expressed per 100 heart beats in order to correct for differences in H ...
PDF
... atrial sites and of activation frequency during AF. Although sympathetic stimulation also decreases atrial ERP, it has no significant effect on these indexes of ERP heterogeneity.27 Perhaps because of its lack of effect on spatial ERP dispersion, sympathetic stimulation was much less effective than ...
... atrial sites and of activation frequency during AF. Although sympathetic stimulation also decreases atrial ERP, it has no significant effect on these indexes of ERP heterogeneity.27 Perhaps because of its lack of effect on spatial ERP dispersion, sympathetic stimulation was much less effective than ...
ACC/AHA/ESC guidelines for the management of patients with
... Class III: Conditions for which there is evidence and/or general agreement that the procedure or treatment is not useful/effective and in some cases may be harmful. ...
... Class III: Conditions for which there is evidence and/or general agreement that the procedure or treatment is not useful/effective and in some cases may be harmful. ...