Pacemaker syndrome
... with a VVIR pacemaker and the disappearance of all or most of the symptoms with upgrading of the pacemaker to a dual chamber one. Plasma ANP levels have also been used a marker of non-physiological pacing in the PASE trial and elevated levels (>90pgml) can be helpful in the diagnosis. On upgrading t ...
... with a VVIR pacemaker and the disappearance of all or most of the symptoms with upgrading of the pacemaker to a dual chamber one. Plasma ANP levels have also been used a marker of non-physiological pacing in the PASE trial and elevated levels (>90pgml) can be helpful in the diagnosis. On upgrading t ...
COMPLICATIONS OF AF ABLATION AFA Booklet
... A side effect of Atrial Fibrillation ablation is a consequence other than the one for which the ablation procedure was intended. A side effect may not necessarily be regarded as a complication. An example of a side effect is post-operative chest discomfort during the first 48 hours after an ablation ...
... A side effect of Atrial Fibrillation ablation is a consequence other than the one for which the ablation procedure was intended. A side effect may not necessarily be regarded as a complication. An example of a side effect is post-operative chest discomfort during the first 48 hours after an ablation ...
CARDIAC POWER OUTPUT, ITS ROLE IN DEFINING HEART
... remaining contractile reserve in the studied population. Hemodynamic information was initially gathered at baseline (no inotropic treatment), which consisted of subjects on standard HF medications, ß-blocker, diuretics, ACE inhibitors, and ARBs. The second stage (Initial Inotropic Treatment) was the ...
... remaining contractile reserve in the studied population. Hemodynamic information was initially gathered at baseline (no inotropic treatment), which consisted of subjects on standard HF medications, ß-blocker, diuretics, ACE inhibitors, and ARBs. The second stage (Initial Inotropic Treatment) was the ...
Electrophysiological Effects of MS
... Effects of MS-551 and dl-sotalol on QT and QTc. The QT intervals were measured at base line and during right ventricular pacing at a basic cycle length of 700 msec. Both the uncorrected QT interval and QTc according to the Bazett’s formula demonstrated variable increases induced by MS-551 as well as ...
... Effects of MS-551 and dl-sotalol on QT and QTc. The QT intervals were measured at base line and during right ventricular pacing at a basic cycle length of 700 msec. Both the uncorrected QT interval and QTc according to the Bazett’s formula demonstrated variable increases induced by MS-551 as well as ...
Total heart volume variation throughout the cardiac cycle in humans
... Volumetric measurements. A ROI was drawn around the pericardial border (Image software; Scion Image, Scion) of the heart in each image of the cine-loop throughout the heart (Fig. 1, C and D). The ROI included all structures within the pericardium: the atria, ventricles, and the roots of the aorta an ...
... Volumetric measurements. A ROI was drawn around the pericardial border (Image software; Scion Image, Scion) of the heart in each image of the cine-loop throughout the heart (Fig. 1, C and D). The ROI included all structures within the pericardium: the atria, ventricles, and the roots of the aorta an ...
Rate vs rhythm control in patients with atrial fibrillation
... patients. None of the studies individually showed statistically significant differences but AF–CHF showed benefit of rate control in the first year after enrolment (p = 0.001) and a tendency favouring rate control (p = 0.06) when the study was analysed in full length. AF–CHF was the study that provided ...
... patients. None of the studies individually showed statistically significant differences but AF–CHF showed benefit of rate control in the first year after enrolment (p = 0.001) and a tendency favouring rate control (p = 0.06) when the study was analysed in full length. AF–CHF was the study that provided ...
Search for HRV‐parameters that detect a sympathetic - UvA-DARE
... spikes globally, making it easier for the second step which is required to preserve continuity of the time series. Calculation of HRV parameters Linear methods Since we derived heart periods from blood pressure recordings rather than from an ECG, we cannot call them NN‐intervals (normal to norm ...
... spikes globally, making it easier for the second step which is required to preserve continuity of the time series. Calculation of HRV parameters Linear methods Since we derived heart periods from blood pressure recordings rather than from an ECG, we cannot call them NN‐intervals (normal to norm ...
The Heart and Cardiac Output
... As blood is ejected, ventricular pressure falls. When ventricular pressure is below the pulmonary artery pressure, the pulmonic valve closes to prevent back flow of blood into the right ventricle. As mentioned in chapter one, the closure of the AV valves (tricuspid and mitral valves) normally produc ...
... As blood is ejected, ventricular pressure falls. When ventricular pressure is below the pulmonary artery pressure, the pulmonic valve closes to prevent back flow of blood into the right ventricle. As mentioned in chapter one, the closure of the AV valves (tricuspid and mitral valves) normally produc ...
Activating Transcription Factor 3 Protects against Pressure
... mice. Twenty-four hours after TAB, we observed an approximately 4-fold increase in the cardiac ATF3 mRNA levels in the study mice compared with controls. This enhanced expression of ATF3 persisted for 7 days after TAB (Fig. 1A). Immunohistochemical data and Western blot analysis from left ventricle ...
... mice. Twenty-four hours after TAB, we observed an approximately 4-fold increase in the cardiac ATF3 mRNA levels in the study mice compared with controls. This enhanced expression of ATF3 persisted for 7 days after TAB (Fig. 1A). Immunohistochemical data and Western blot analysis from left ventricle ...
Dynamics of pure parasystole
... are of major clinical importance because of their role in the pathogenesis of the sudden cardiac death syndrome. Ventricular ectopic beats may be due to at least one of the two following major mechanisms (4): abnormalities in cardiac conduction (e.g., reentry) and abnormalities in impulse formation ...
... are of major clinical importance because of their role in the pathogenesis of the sudden cardiac death syndrome. Ventricular ectopic beats may be due to at least one of the two following major mechanisms (4): abnormalities in cardiac conduction (e.g., reentry) and abnormalities in impulse formation ...
1 - McGraw Hill Higher Education
... • Impulse is slowed as it passes from atria to ventricles through AV node • On ECG impulse traveling through His-Purkinje system is seen as a flat line following the P wave • QRS complex is generated and ventricles contract as a result of electrical impulse stimulating ventricles • ST segment and T ...
... • Impulse is slowed as it passes from atria to ventricles through AV node • On ECG impulse traveling through His-Purkinje system is seen as a flat line following the P wave • QRS complex is generated and ventricles contract as a result of electrical impulse stimulating ventricles • ST segment and T ...
Left Anterior Fascicular Block (LAFB)-KH
... If there is no isoelectric lead, there are usually two leads that are nearly isoelectric, and these are always 30o apart. Find the perpendiculars for each lead and chose an approximate QRS axis within the 30o range. Occasionally each of the 6 frontal plane leads is small and/or isoelectric. The axis ...
... If there is no isoelectric lead, there are usually two leads that are nearly isoelectric, and these are always 30o apart. Find the perpendiculars for each lead and chose an approximate QRS axis within the 30o range. Occasionally each of the 6 frontal plane leads is small and/or isoelectric. The axis ...
The Association between the Pattern of Premature Ventricular
... pattern characterize right ventricular ectopic contractions and the RBBB pattern characterize left ventricular ectopic contractions13, 19, 20). In addition, PVCs originating within the anterior division of the left bundle branch or the anterior left ventricular wall present the RBBB pattern with lef ...
... pattern characterize right ventricular ectopic contractions and the RBBB pattern characterize left ventricular ectopic contractions13, 19, 20). In addition, PVCs originating within the anterior division of the left bundle branch or the anterior left ventricular wall present the RBBB pattern with lef ...
Na/K pump regulation of cardiac repolarization
... Single-cell simulations revealed that the APD shortening caused by Na/K inhibition is due to a cascade-like mechanism initiated by the progressive accumulation of intracellular Na+ within the membrane cytoplasm [59], in agreement with [38]. The decreased transarcolemmal Na+ gradient (driving force o ...
... Single-cell simulations revealed that the APD shortening caused by Na/K inhibition is due to a cascade-like mechanism initiated by the progressive accumulation of intracellular Na+ within the membrane cytoplasm [59], in agreement with [38]. The decreased transarcolemmal Na+ gradient (driving force o ...
Full-Text PDF
... hearts lack the sinu-ventricular ligament and posses a sinus cord. They show, however, dystopic PE-derived tissue bridges, which connect the sinus cord or the blocking membrane with the developing ventricles. The points of attachment of such dystopic cardiac ligaments to the ventricles usually lie c ...
... hearts lack the sinu-ventricular ligament and posses a sinus cord. They show, however, dystopic PE-derived tissue bridges, which connect the sinus cord or the blocking membrane with the developing ventricles. The points of attachment of such dystopic cardiac ligaments to the ventricles usually lie c ...
Understanding Heart Failure
... An abnormal heart rhythm is called an arrhythmia. Arrhythmias occur when the heart’s electrical signals become interrupted or disorganized, causing the heart to beat too quickly or too slowly. When your heart beats out of rhythm, it may impair the heart’s ability to pump properly. Some arrhythmias t ...
... An abnormal heart rhythm is called an arrhythmia. Arrhythmias occur when the heart’s electrical signals become interrupted or disorganized, causing the heart to beat too quickly or too slowly. When your heart beats out of rhythm, it may impair the heart’s ability to pump properly. Some arrhythmias t ...
Improved Diastolic Function Is Associated With Higher Cardiac
... Key Words: cardiac output • diastolic dysfunction • heart failure ...
... Key Words: cardiac output • diastolic dysfunction • heart failure ...
X35129134
... cardiac abnormalities. In this paper, attempts have been made to identify Intracardiac atria fibrillation from ECG time series in terms of Fractal Dimension. It has been seen that many Physical, Bio-physical, Geo-physical signals are irregular and in many times these follow Gaussian distribution [11 ...
... cardiac abnormalities. In this paper, attempts have been made to identify Intracardiac atria fibrillation from ECG time series in terms of Fractal Dimension. It has been seen that many Physical, Bio-physical, Geo-physical signals are irregular and in many times these follow Gaussian distribution [11 ...
Amiodarone-Induced Postrepolarization Refractoriness Suppresses
... was connected to a pressure transducer and placed into the left ventricle to monitor left ventricular pressure. A volume-conducted six-lead ECG was recorded from a solution-filled tissue bath (Kirchhof et al., 1998). All data were acquired using a 24-channel EP lab system (EP system version 2.51; Ba ...
... was connected to a pressure transducer and placed into the left ventricle to monitor left ventricular pressure. A volume-conducted six-lead ECG was recorded from a solution-filled tissue bath (Kirchhof et al., 1998). All data were acquired using a 24-channel EP lab system (EP system version 2.51; Ba ...
Atrial Fibrillation Associated with Heart Failure, Stroke and
... this observation, a prevalence model estimated in the total U.S. population an AF prevalence of 2,1% in the 1980s and of 2,5% in the year 2000. The same model, applied to the demographic projections for the U.S., predicted an estimate of 12,1 millions AF patients in 2050, but this number rose up to ...
... this observation, a prevalence model estimated in the total U.S. population an AF prevalence of 2,1% in the 1980s and of 2,5% in the year 2000. The same model, applied to the demographic projections for the U.S., predicted an estimate of 12,1 millions AF patients in 2050, but this number rose up to ...
Electrophysiology Pacemaker Worksheet
... 3. Seen on the ECG monitor is an absence of pacemaker spikes even though the patient’s intrinsic rate is less than that of the pacemaker and a return of the underlying rhythm for which the pacemaker was implanted is known as a. Failure to pace b. Failure to sense c. Oversensing 4. Complications of t ...
... 3. Seen on the ECG monitor is an absence of pacemaker spikes even though the patient’s intrinsic rate is less than that of the pacemaker and a return of the underlying rhythm for which the pacemaker was implanted is known as a. Failure to pace b. Failure to sense c. Oversensing 4. Complications of t ...
presentation source
... the wave of depolarization is generally moving away from the positive sensing electrode, then the electrode will record a negative deflection below the isoelectric line on the EKG ...
... the wave of depolarization is generally moving away from the positive sensing electrode, then the electrode will record a negative deflection below the isoelectric line on the EKG ...
The Autonomic Nervous System and Heart Failure
... norepinephrine on acetylcholine stimulation of the nicotinic cholinergic receptors present on their cell membranes.2 Thus, all of the epinephrine in the body and a significant amount of circulating norepinephrine derive from the adrenal medulla, and the total amount of catecholamines presented to ca ...
... norepinephrine on acetylcholine stimulation of the nicotinic cholinergic receptors present on their cell membranes.2 Thus, all of the epinephrine in the body and a significant amount of circulating norepinephrine derive from the adrenal medulla, and the total amount of catecholamines presented to ca ...
Associations Between Cardiac Fibrosis and
... (age 51.6±8.9 y; long-standing AF in 10 patients; sinus rhythm in 11 patients) with advanced HF who underwent heart transplantation at Institute for Clinical and Experimental Medicine (IKEM) in Prague. The underlying etiology of HF was coronary artery disease (10 patients), dilated cardiomyopathy (9 ...
... (age 51.6±8.9 y; long-standing AF in 10 patients; sinus rhythm in 11 patients) with advanced HF who underwent heart transplantation at Institute for Clinical and Experimental Medicine (IKEM) in Prague. The underlying etiology of HF was coronary artery disease (10 patients), dilated cardiomyopathy (9 ...
Antifailure Therapy Including Spironolactone Improves Left
... ≥3 months. Exclusion criteria were potentially reversible causes of HF, such as myocarditis and peripartum cardiomyopathy, need for an implantable cardioverter-defibrillator, myocardial infarction on electrocardiogram (ECG), a positive stress test or angiographic coronary artery stenosis ≥50% in a ma ...
... ≥3 months. Exclusion criteria were potentially reversible causes of HF, such as myocarditis and peripartum cardiomyopathy, need for an implantable cardioverter-defibrillator, myocardial infarction on electrocardiogram (ECG), a positive stress test or angiographic coronary artery stenosis ≥50% in a ma ...