Redalyc.Treatment of Chronic Atrial Fibrillation During Surgery for
... right and left atrial appendages. It uses a purse string suture, in the introduction of the cannula in the superior vena cava in the right atrium and by the closing of the ostium of the left atrial appendage by intra-atrial suture respectively; and facilitates to a broad internal exposure of the lef ...
... right and left atrial appendages. It uses a purse string suture, in the introduction of the cannula in the superior vena cava in the right atrium and by the closing of the ostium of the left atrial appendage by intra-atrial suture respectively; and facilitates to a broad internal exposure of the lef ...
Echocardiographic assessment of diastolic function Steve R. Ommen, MD
... than 30 ms had 86% survival at 2 years. This was the strongest predictor among the variables considered, including level of systolic function [24•]. Despite these important observations in the PV, some limitations must be realized. The most problematic limitation is the overall feasibility of obtain ...
... than 30 ms had 86% survival at 2 years. This was the strongest predictor among the variables considered, including level of systolic function [24•]. Despite these important observations in the PV, some limitations must be realized. The most problematic limitation is the overall feasibility of obtain ...
Impact of Longitudinal Myocardial Deformation on the Prognosis of
... reproducibility and ability to stratify the outcome of heart failure patients. The negative predictive value (84%) of global strain (<-9%) is particularly interesting in identifying patients at low risk of cardiac events. Despite, its limited specificity (54%) and positive predictive value (53%), a ...
... reproducibility and ability to stratify the outcome of heart failure patients. The negative predictive value (84%) of global strain (<-9%) is particularly interesting in identifying patients at low risk of cardiac events. Despite, its limited specificity (54%) and positive predictive value (53%), a ...
A Novel Method for Cine-CMR Automated Assessment of Left
... INTRODUCTION: Accurate assessment of left ventricular (LV) diastolic function is important for diagnosis and treatment of patients with congestive heart failure [1]. LV volumetric filling curves have been used to assess diastolic dysfunction [2, 3], but this has been impractical with CMR due to the ...
... INTRODUCTION: Accurate assessment of left ventricular (LV) diastolic function is important for diagnosis and treatment of patients with congestive heart failure [1]. LV volumetric filling curves have been used to assess diastolic dysfunction [2, 3], but this has been impractical with CMR due to the ...
Clinical aspects of hypertensive myocardial fibrosis
... absence of a cause other than arterial hypertension. However, it is now accepted that besides left ventricular hypertrophy (LVH), alterations in myocardial structure (Table 1) account for loss of tissue homogeneity and pathologic remodeling that appears in HHD. A growing body of evidence indicates t ...
... absence of a cause other than arterial hypertension. However, it is now accepted that besides left ventricular hypertrophy (LVH), alterations in myocardial structure (Table 1) account for loss of tissue homogeneity and pathologic remodeling that appears in HHD. A growing body of evidence indicates t ...
Pseudo-postpacing interval of diastolic potential after entrainment
... bystander pathway, for the following reasons. When entrainment pacing captures the critical isthmus and the remote bystander simultaneously (as illustrated in Fig. 5d), the Nth antidromic wavefront originating from pacing at the remote bystander collides constantly, probably outside the critical ist ...
... bystander pathway, for the following reasons. When entrainment pacing captures the critical isthmus and the remote bystander simultaneously (as illustrated in Fig. 5d), the Nth antidromic wavefront originating from pacing at the remote bystander collides constantly, probably outside the critical ist ...
Left Heart Failure With a Normal Ejection Fraction: Identification of
... syndrome, a single pathophysiologic mechanism, diastolic dysfunction, is often ascribed to explain this condition. In view of the clinical heterogeneity of these patients, we hypothesized that subgroups of HFNEF patients may have different underlying pathophysiologic mechanisms. Methods and Results: ...
... syndrome, a single pathophysiologic mechanism, diastolic dysfunction, is often ascribed to explain this condition. In view of the clinical heterogeneity of these patients, we hypothesized that subgroups of HFNEF patients may have different underlying pathophysiologic mechanisms. Methods and Results: ...
Coexistence of sudden cardiac death and end-stage heart
... at necropsy of an asymmetrically hypertrophied, nondilated left ventricle in the absence of another cardiovascular or systemic disease that could itself produce left ventricular hypertrophy (29) . Family members who died suddenly and unexpectedly before age 40 years (but in whom these morphologic fe ...
... at necropsy of an asymmetrically hypertrophied, nondilated left ventricle in the absence of another cardiovascular or systemic disease that could itself produce left ventricular hypertrophy (29) . Family members who died suddenly and unexpectedly before age 40 years (but in whom these morphologic fe ...
Pulsus paradoxus - European Respiratory Journal
... At the left side Increased abdominal pressure during inspiration increases the intraluminal pressure of the abdominal aorta and thus the impedance to left ventricular ejection, independently of the effect of decreased ITP [15]. Inspiratory increase in lung volume Effects on right ventricular afterlo ...
... At the left side Increased abdominal pressure during inspiration increases the intraluminal pressure of the abdominal aorta and thus the impedance to left ventricular ejection, independently of the effect of decreased ITP [15]. Inspiratory increase in lung volume Effects on right ventricular afterlo ...
New Targets to Treat the Structural Remodeling of the
... and Survival Study) studies support a beneficial role for mineralocorticoid receptor antagonists on extracellular matrix turnover, as assessed by circulating biomarkers of collagen metabolism, with a positive impact in post-infarct remodeling and clinical outcome (reviewed in [40]). The synthesis of ...
... and Survival Study) studies support a beneficial role for mineralocorticoid receptor antagonists on extracellular matrix turnover, as assessed by circulating biomarkers of collagen metabolism, with a positive impact in post-infarct remodeling and clinical outcome (reviewed in [40]). The synthesis of ...
An Inverse Finite Element Method for Determining the
... of the human heart. To obtain accurate properties especially for functional modeling of a heart, tissue properties have to be determined in vivo. At present, there are only few in vivo methods that can be applied to characterize the internal myocardium tissue mechanics. This work introduced and eval ...
... of the human heart. To obtain accurate properties especially for functional modeling of a heart, tissue properties have to be determined in vivo. At present, there are only few in vivo methods that can be applied to characterize the internal myocardium tissue mechanics. This work introduced and eval ...
Comparison of Contractile Performance of Canine Atrial and
... The muscles were mounted in an experimental apparatus that has been described previously (20, 25, 26). One end of the muscle was attached to a fixed force gauge with no measurable nonlinearity in the tension signal over applied forces up to 10 g. The other end of the muscle was attached to a light a ...
... The muscles were mounted in an experimental apparatus that has been described previously (20, 25, 26). One end of the muscle was attached to a fixed force gauge with no measurable nonlinearity in the tension signal over applied forces up to 10 g. The other end of the muscle was attached to a light a ...
Symptoms In Atrial Fibrillation: A Contemporary Review And
... for 12 months, asymptomatic atrial tachyarrhythmia occurred 12 times more often that symptomatic tachyarrhythmia.28 Later studies expanded upon this finding, estimating that even in patients with some symptomatic disease, asymptomatic AF was far more prevalent, accounting for 54-94% of all AF arrhyt ...
... for 12 months, asymptomatic atrial tachyarrhythmia occurred 12 times more often that symptomatic tachyarrhythmia.28 Later studies expanded upon this finding, estimating that even in patients with some symptomatic disease, asymptomatic AF was far more prevalent, accounting for 54-94% of all AF arrhyt ...
Arrhythmia ToolBox Resources
... educational content to support electrocardiogram (ECG) interpretation for a diverse audience. ECG interpretation has become a valuable and necessary skill for a wide audience. The audience may consist of registered nurses working in telemetry units, emergency departments, critical care units, postan ...
... educational content to support electrocardiogram (ECG) interpretation for a diverse audience. ECG interpretation has become a valuable and necessary skill for a wide audience. The audience may consist of registered nurses working in telemetry units, emergency departments, critical care units, postan ...
ABC of clinical electrocardiography Junctional tachycardias
... Clinical presentation The Wolff-Parkinson-White syndrome is sometimes an incidental electrocardiographic finding, but often patients present with tachyarrhythmias. Episodes tend to be more common in young people but may come and go through life. Patients may first present when they are old. When rap ...
... Clinical presentation The Wolff-Parkinson-White syndrome is sometimes an incidental electrocardiographic finding, but often patients present with tachyarrhythmias. Episodes tend to be more common in young people but may come and go through life. Patients may first present when they are old. When rap ...
SafeR Pacing Mode
... SafeR pacing mode has been designed to promote intrinsic atrioventricular (AV) conduction and minimize unnecessary right ventricular pacing. SafeR pacing mode provides AAI pacing while continuously monitoring AV conduction (ADI mode). The device temporarily switches to DDD mode upon the occurrence o ...
... SafeR pacing mode has been designed to promote intrinsic atrioventricular (AV) conduction and minimize unnecessary right ventricular pacing. SafeR pacing mode provides AAI pacing while continuously monitoring AV conduction (ADI mode). The device temporarily switches to DDD mode upon the occurrence o ...
Acute coronary syndromes
... future risk of sudden cardiac death after ACS? Methodology: Papers I, III and IV studied patients with ACS prospectively and consecutively included at the coronary care unit of Sahlgrenska University Hospital. Paper I deals with 2,329 patients who were followed for a median of 8 years. Paper III inc ...
... future risk of sudden cardiac death after ACS? Methodology: Papers I, III and IV studied patients with ACS prospectively and consecutively included at the coronary care unit of Sahlgrenska University Hospital. Paper I deals with 2,329 patients who were followed for a median of 8 years. Paper III inc ...
Failure to precondition pathological human myocardium
... protection of these hearts. There are very few studies in human diabetic tissue. Cleveland et al. (16) used a functional isolated atrial trabeculae model and showed that PC did not confer any protection of the myocardium on patients taking long-term oral hypoglycemic agents. They hypothesized that l ...
... protection of these hearts. There are very few studies in human diabetic tissue. Cleveland et al. (16) used a functional isolated atrial trabeculae model and showed that PC did not confer any protection of the myocardium on patients taking long-term oral hypoglycemic agents. They hypothesized that l ...
Ventricular Conduction Disturbances: Bundle Branch Blocks and
... Left bundle branch block (LBBB) also produces a pattern with a widened QRS complex. However, the QRS complex with LBBB is very different from that with RBBB. The major reason for this difference is that RBBB affects mainly the terminal phase of ventricular activation, whereas LBBB also affects the e ...
... Left bundle branch block (LBBB) also produces a pattern with a widened QRS complex. However, the QRS complex with LBBB is very different from that with RBBB. The major reason for this difference is that RBBB affects mainly the terminal phase of ventricular activation, whereas LBBB also affects the e ...
Takotsubo Cardiomyopathy
... plasma catecholamines are found in a majority of patients at presentation; however, their role in the pathogenesis remains poorly understood and these are not generally measured unless there is concern about pheochromocytoma. It is not clear whether serial measurements are of value for clinical deci ...
... plasma catecholamines are found in a majority of patients at presentation; however, their role in the pathogenesis remains poorly understood and these are not generally measured unless there is concern about pheochromocytoma. It is not clear whether serial measurements are of value for clinical deci ...
Evaluating strict and conventional left bundle
... This study demonstrates that the strict LBBB criteria are more specific (100% specificity) than conventional LBBB criteria (48% specificity), while both sets of criteria result in 100% sensitivity in diagnosing complete LBBB. Improvement in the diagnostic specificity for LBBB is likely to increase t ...
... This study demonstrates that the strict LBBB criteria are more specific (100% specificity) than conventional LBBB criteria (48% specificity), while both sets of criteria result in 100% sensitivity in diagnosing complete LBBB. Improvement in the diagnostic specificity for LBBB is likely to increase t ...
12 Lead EKG Interpretation
... is is in in fact fact actually actually rhythm rhythm strip strip interpretation. interpretation. ...
... is is in in fact fact actually actually rhythm rhythm strip strip interpretation. interpretation. ...
Mechanical Dyssynchrony Precedes QRS Widening in ATPSensitive
... Methods and Results-—High-resolution speckle-tracking echocardiography was applied in a knockout murine surrogate of adultonset human cardiomyopathy caused by mutations in cardioprotective ATP-sensitive K+ (KATP) channels. Preceding the established criteria of cardiac dyssynchrony, multiparametric s ...
... Methods and Results-—High-resolution speckle-tracking echocardiography was applied in a knockout murine surrogate of adultonset human cardiomyopathy caused by mutations in cardioprotective ATP-sensitive K+ (KATP) channels. Preceding the established criteria of cardiac dyssynchrony, multiparametric s ...
Mechanical Dyssynchrony Precedes QRS Widening in ATPSensitive
... Methods and Results-—High-resolution speckle-tracking echocardiography was applied in a knockout murine surrogate of adultonset human cardiomyopathy caused by mutations in cardioprotective ATP-sensitive K+ (KATP) channels. Preceding the established criteria of cardiac dyssynchrony, multiparametric s ...
... Methods and Results-—High-resolution speckle-tracking echocardiography was applied in a knockout murine surrogate of adultonset human cardiomyopathy caused by mutations in cardioprotective ATP-sensitive K+ (KATP) channels. Preceding the established criteria of cardiac dyssynchrony, multiparametric s ...
Latest data from Secondary Prevention Implantable Cardioverter
... patients at high risk for sudden death. Since overall survival was improved, the ICD may prolong life further through some undefined nonarrhythmic mechanism. Despite their smaller size and other problems in interpreting these trials, the results of CASH and CIDS support the findings of AVID. The res ...
... patients at high risk for sudden death. Since overall survival was improved, the ICD may prolong life further through some undefined nonarrhythmic mechanism. Despite their smaller size and other problems in interpreting these trials, the results of CASH and CIDS support the findings of AVID. The res ...
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.