Left ventricular function: time-varying elastance and left
... perfect. Because of different strengths and weaknesses, different variants of ventricular pump function inputs and outputs can be chosen strategically to address specific questions. In a clinical context central venous pressure (right ventricular end-diastolic pressure) and cardiac output are readil ...
... perfect. Because of different strengths and weaknesses, different variants of ventricular pump function inputs and outputs can be chosen strategically to address specific questions. In a clinical context central venous pressure (right ventricular end-diastolic pressure) and cardiac output are readil ...
Influence of Psychological Stress on Systolic
... and with heart diseases [1-3]. Heart rate and ventricular repolarization characteristics were reported to be affected by stress in several studies [4, 5]. Increase in heart rate (i.e. decreases in RR interval in ECG), heart rate variability, alteration in QT interval (i.e. ventricular repolarization ...
... and with heart diseases [1-3]. Heart rate and ventricular repolarization characteristics were reported to be affected by stress in several studies [4, 5]. Increase in heart rate (i.e. decreases in RR interval in ECG), heart rate variability, alteration in QT interval (i.e. ventricular repolarization ...
Left anterior fascicular VT
... narrow QRS, response to verapamil and presentation in young patients without structural heart disease. The presence of ventriculoatrial dissociation in the ECG or during the EPS may clarify the diagnosis. It must also be distinguished from other forms of VT with narrow QRS. This is the case of VT re ...
... narrow QRS, response to verapamil and presentation in young patients without structural heart disease. The presence of ventriculoatrial dissociation in the ECG or during the EPS may clarify the diagnosis. It must also be distinguished from other forms of VT with narrow QRS. This is the case of VT re ...
Use of implantable cardioverter defibrillators in patients with left
... programming after LVAD implantation. Most ICDs detect VT/VF and deliver shock therapy before loss of consciousness. Consequently, ICD shocks are painful and associated with reduced quality of life.29 LVAD patients may have a high burden of non-sustained VT, especially in the early post-operative per ...
... programming after LVAD implantation. Most ICDs detect VT/VF and deliver shock therapy before loss of consciousness. Consequently, ICD shocks are painful and associated with reduced quality of life.29 LVAD patients may have a high burden of non-sustained VT, especially in the early post-operative per ...
Chronic Left Complete Bundle-branch Block - Heart
... cases of left complete bundle-branch block was considered together, the late left ventricular ejection was found to result both from a late onset and from a prolonged pre-ejection period of left ventricular contraction. These findings were confirmed by the comparison between the pre-operative and po ...
... cases of left complete bundle-branch block was considered together, the late left ventricular ejection was found to result both from a late onset and from a prolonged pre-ejection period of left ventricular contraction. These findings were confirmed by the comparison between the pre-operative and po ...
Slide 1 - Annals of Internal Medicine
... Threshold analysis of the effectiveness of ACE inhibitor and BB treatment for the overall cohort and anthracycline subgroups at a cost-effectiveness threshold of $100 000/QALY. Optimal strategy based on treatment effectiveness in a cost-effectiveness framework for 2 scenarios: when only 2D echo is a ...
... Threshold analysis of the effectiveness of ACE inhibitor and BB treatment for the overall cohort and anthracycline subgroups at a cost-effectiveness threshold of $100 000/QALY. Optimal strategy based on treatment effectiveness in a cost-effectiveness framework for 2 scenarios: when only 2D echo is a ...
Original Article
... to the local LV electrogram (QLV), was found in previous studies to be a strong predictor of short-term response to cardiac resynchronization therapy. We hypothesized that suboptimum electric position of the left ventricular lead is associated with an excess of heart failure events and mortality. Me ...
... to the local LV electrogram (QLV), was found in previous studies to be a strong predictor of short-term response to cardiac resynchronization therapy. We hypothesized that suboptimum electric position of the left ventricular lead is associated with an excess of heart failure events and mortality. Me ...
PDF
... Background: The functional status of heart failure (HF) is conventionally evaluated by peak exercise oxygen consumption (VO 2 max). Dobutamine echocardiography can be used to evaluate myocardial reserve. The aim of this study was to estimate the functional status of chronic HF in patients with dilat ...
... Background: The functional status of heart failure (HF) is conventionally evaluated by peak exercise oxygen consumption (VO 2 max). Dobutamine echocardiography can be used to evaluate myocardial reserve. The aim of this study was to estimate the functional status of chronic HF in patients with dilat ...
... the presence of elevated filling pressure, is often seen in patients with advanced cardiac disease'251. If both impaired relaxation and decreased compliance of the ventricle is present at the same time, the abnormalities will have opposing effects on the left ventricular filling pattern. The balance ...
Cardiac Channelopathies and Sudden Death: Recent Clinical and
... propagation of electrical activity. Changes in AP, synchronization, and/or propagation of electrical impulse predispose to potentially malignant arrhythmias [18,19]. These modifications may be induced by pathogenic variants in genes encoding ion channels or associated proteins. As mentioned above, t ...
... propagation of electrical activity. Changes in AP, synchronization, and/or propagation of electrical impulse predispose to potentially malignant arrhythmias [18,19]. These modifications may be induced by pathogenic variants in genes encoding ion channels or associated proteins. As mentioned above, t ...
Transthoracic echocardiography in the perioperative setting
... four-chamber view. Dilatation of the right ventricle, defined as a basal diameter more than 41 mm in the apical four-chamber or more than 30 mm in the parasternal long axis view [40 ], is a sign of either right-sided heart failure or pressure or volume overload [46]; this should prompt further inves ...
... four-chamber view. Dilatation of the right ventricle, defined as a basal diameter more than 41 mm in the apical four-chamber or more than 30 mm in the parasternal long axis view [40 ], is a sign of either right-sided heart failure or pressure or volume overload [46]; this should prompt further inves ...
Tissue doppler echocardiography for evaluating left ventricular
... which standard LV parameters were normal.1 In addition, when compared to conventional Doppler parameters, TDE data are relatively independent from preload and afterload so it is useful in assessment of diastolic functions. TDE is a recently used new technique; for that reason there are a few studies ...
... which standard LV parameters were normal.1 In addition, when compared to conventional Doppler parameters, TDE data are relatively independent from preload and afterload so it is useful in assessment of diastolic functions. TDE is a recently used new technique; for that reason there are a few studies ...
Contemporary Management of Acute Right Ventricular Failure: A
... systolic functional adaptation (Anrep’s law of the heart) within minutes of a rise in pulmonary artery pressure; chronically it implements a heterometric or dimensional adaptation (Starling’s law of the heart) to preserve flow output. Insufficient systolic functional adaptation will limit cardiac o ...
... systolic functional adaptation (Anrep’s law of the heart) within minutes of a rise in pulmonary artery pressure; chronically it implements a heterometric or dimensional adaptation (Starling’s law of the heart) to preserve flow output. Insufficient systolic functional adaptation will limit cardiac o ...
Chronic Coronary Artery Constriction Leads to Moderate
... OH). After monitoring arterial blood pressure, the catheter was advanced into the left ventricle for the evaluation of left ventricular pressures and dP/dt. Subsequently, a second catheter (Millar PR 249) with a 1200 curved tip was inserted in the right jugular vein and advanced through the superior ...
... OH). After monitoring arterial blood pressure, the catheter was advanced into the left ventricle for the evaluation of left ventricular pressures and dP/dt. Subsequently, a second catheter (Millar PR 249) with a 1200 curved tip was inserted in the right jugular vein and advanced through the superior ...
Cardiac function in diabetic and non
... coronary angiography were studied. After obtaining medical history and anthropometrical data and prior to coronary angiography, arterial blood samples were obtained and the electrocardiogram was evaluated. During coronary angiography hemodynamic parameters and various left ventricular (LV) systolic ...
... coronary angiography were studied. After obtaining medical history and anthropometrical data and prior to coronary angiography, arterial blood samples were obtained and the electrocardiogram was evaluated. During coronary angiography hemodynamic parameters and various left ventricular (LV) systolic ...
Assessment of systemic right ventricular function using tissue
... degree of hemodynamic disturbances affecting systemic ventricular function not only allows better investigation of the cardiovascular system but also helps determine prognostic factors to guide further therapeutic decisions. The role of tissue Doppler imaging (TDI) in paediatric patients with univen ...
... degree of hemodynamic disturbances affecting systemic ventricular function not only allows better investigation of the cardiovascular system but also helps determine prognostic factors to guide further therapeutic decisions. The role of tissue Doppler imaging (TDI) in paediatric patients with univen ...
chapter 1. overview - IMIB-CHD
... The most commonly used terms ‘criss-cross heart’ and ‘superoinferior ventricles’ describe the hearts with the same or similar pathology from the different points of view and perspectives. The term ‘crisscross heart’ describes the directions of the two blood streams from the atria to the ventricular ...
... The most commonly used terms ‘criss-cross heart’ and ‘superoinferior ventricles’ describe the hearts with the same or similar pathology from the different points of view and perspectives. The term ‘crisscross heart’ describes the directions of the two blood streams from the atria to the ventricular ...
Clinical Determinants of Left Ventricular Ejection Fraction
... by NYHA classification), and cardiac ischemic event can predispose LBBB patients to LV dysfunction indicated by decline LVEF. In fact, as confirmed by some previous studies, some cardiovascular risk profile leading to elevated LV mass, shortening LV filling time, prolongation of relaxation times, in ...
... by NYHA classification), and cardiac ischemic event can predispose LBBB patients to LV dysfunction indicated by decline LVEF. In fact, as confirmed by some previous studies, some cardiovascular risk profile leading to elevated LV mass, shortening LV filling time, prolongation of relaxation times, in ...
Right Ventricular End-Diastolic Volume Combined With
... cardioversion, ablation, implantation of a pacemaker, or a permanent change of antiarrhythmic medication. Patients had to be free from supraventricular arrhythmia for at least 1 year since inclusion for an episode to be considered a new event. Baffle leakage or stenosis, failing conduits, or valvular ...
... cardioversion, ablation, implantation of a pacemaker, or a permanent change of antiarrhythmic medication. Patients had to be free from supraventricular arrhythmia for at least 1 year since inclusion for an episode to be considered a new event. Baffle leakage or stenosis, failing conduits, or valvular ...
Anti-Inflammatory Strategies for Ventricular Remodeling Following ST-Segment Elevation Acute Myocardial Infarction
... Mechanisms of action for the different anti-inflammatory treatments. (Upper left) Glucocorticoids bind a receptor (GR) in the cytosol that homodimerizes and translocates to the nucleus to exert anti-inflammatory effects, whereas other nongenomic effects are related to endothelial nitric oxide synthase ...
... Mechanisms of action for the different anti-inflammatory treatments. (Upper left) Glucocorticoids bind a receptor (GR) in the cytosol that homodimerizes and translocates to the nucleus to exert anti-inflammatory effects, whereas other nongenomic effects are related to endothelial nitric oxide synthase ...
Beyond ejection fraction: an integrative approach for assessment of
... death (SCD), is currently the primary metric by which decisions regarding ICD placement are made. An LVEF ≤35% is the currently recommended treatment cut-off for ICD implantation for the primary prevention of SCD,1 primarily based on studies that utilized LVEF as the only common entry criterion and ...
... death (SCD), is currently the primary metric by which decisions regarding ICD placement are made. An LVEF ≤35% is the currently recommended treatment cut-off for ICD implantation for the primary prevention of SCD,1 primarily based on studies that utilized LVEF as the only common entry criterion and ...
review of the diagnosis and treatment of diastolic heart failure
... catheterization (Kraajj, D. J., Cols. 2002). ...
... catheterization (Kraajj, D. J., Cols. 2002). ...
Electrocardiography in horses – part 2
... is commonly mistaken for a QRS complex by the commercial software. For this reason, manual inspection of the analysis remains compulsory. Heart rhythm is assessed to determine whether it is regular or irregular although small deviations in the RR interval are physiological. It has been suggested tha ...
... is commonly mistaken for a QRS complex by the commercial software. For this reason, manual inspection of the analysis remains compulsory. Heart rhythm is assessed to determine whether it is regular or irregular although small deviations in the RR interval are physiological. It has been suggested tha ...
Cardiac arrhythmias in coronary heart disease.
... This guideline is not intended to be construed or to serve as a standard of care. Standards of care are determined on the basis of all clinical data available for an individual case and are subject to change as scientific knowledge and technology advance and patterns of care evolve. Adherence to gui ...
... This guideline is not intended to be construed or to serve as a standard of care. Standards of care are determined on the basis of all clinical data available for an individual case and are subject to change as scientific knowledge and technology advance and patterns of care evolve. Adherence to gui ...
Ventricular fibrillation
Ventricular fibrillation (V-fib or VF) is a condition in which there is uncoordinated contraction of the cardiac muscle of the ventricles in the heart, making them quiver rather than contract properly. Ventricular fibrillation is the most commonly identified arrhythmia in cardiac arrest patients. While there is some activity, the lay person is usually unable to detect it by palpating (feeling) the major pulse points of the carotid and femoral arteries. Such an arrhythmia is only confirmed by electrocardiography. Ventricular fibrillation is a medical emergency that requires prompt Advanced Life Support interventions. If this arrhythmia continues for more than a few seconds, it will likely degenerate further into asystole (""flatline""). This condition results in cardiogenic shock and cessation of effective blood circulation. As a consequence, sudden cardiac death (SCD) will result in a matter of minutes. If the patient is not revived after a sufficient period (within roughly 5 minutes at room temperature), the patient could sustain irreversible brain damage and possibly become brain-dead, due to the effects of cerebral hypoxia. On the other hand, death often occurs if sinus rhythm is not restored within 90 seconds of the onset of VF, especially if it has degenerated further into asystole.