Focused update 2012 on atrial fibrillation
... and a three-fold incidence of congestive heart failure, and higher mortality. Hospitalization of patients with AF is also very common. This arrhythmia is a major cardiovascular challenge in modern society and its medical, social and economic aspects are all set to worsen over the coming decades. For ...
... and a three-fold incidence of congestive heart failure, and higher mortality. Hospitalization of patients with AF is also very common. This arrhythmia is a major cardiovascular challenge in modern society and its medical, social and economic aspects are all set to worsen over the coming decades. For ...
Left Ventricular Untwisting Is an Important Determinant of Early
... LV stiffness constant (: r ⫽ 0.11, p ⫽ NS) or the functional LV chamber stiffness (b: r ⫽ 0.11, p ⫽ NS) and untwisting. C O N C L U S I O N S Untwisting parameters are related to invasive indexes of LV relaxation and suction but not to LV stiffness. These data suggest that untwisting is an importan ...
... LV stiffness constant (: r ⫽ 0.11, p ⫽ NS) or the functional LV chamber stiffness (b: r ⫽ 0.11, p ⫽ NS) and untwisting. C O N C L U S I O N S Untwisting parameters are related to invasive indexes of LV relaxation and suction but not to LV stiffness. These data suggest that untwisting is an importan ...
Personalized management of atrial fibrillation
... The ECG may show signs of concomitant heart disease, such as LVH, conduction disease (AV block), possible heart failure (e.g. bundle branch block), myocardial ischaemia (ST-T segment changes), or inherited cardiomyopathies including channelopathies. Such disease states may guide the selection of ant ...
... The ECG may show signs of concomitant heart disease, such as LVH, conduction disease (AV block), possible heart failure (e.g. bundle branch block), myocardial ischaemia (ST-T segment changes), or inherited cardiomyopathies including channelopathies. Such disease states may guide the selection of ant ...
Current and Evolving Echocardiographic Techniques
... according to the application for measuring slopes and time intervals: high sweep speed for measuring slopes in a few beats and low sweep speed for measuring peak values in several beats. Some imaging systems enable retrospective adjustments of sweep speed in stored data without a loss of data qualit ...
... according to the application for measuring slopes and time intervals: high sweep speed for measuring slopes in a few beats and low sweep speed for measuring peak values in several beats. Some imaging systems enable retrospective adjustments of sweep speed in stored data without a loss of data qualit ...
EuroEcho-Imaging 2013, Istanbul, Final Programme
... young cardiologists and researchers will be stimulated and supported through the organisation of two (clinical and basic) young investigator award sessions. In addition, the best original researches will be acknowledged through dedicated initiatives. This congress is a unique opportunity for cardiol ...
... young cardiologists and researchers will be stimulated and supported through the organisation of two (clinical and basic) young investigator award sessions. In addition, the best original researches will be acknowledged through dedicated initiatives. This congress is a unique opportunity for cardiol ...
The Hemodynamic Effect of Intrinsic Conduction During Left
... of activation resulting from LV pacing compared to intrinsic conduction could necessitate earlier left-sided activation to restore balanced electrical activation of the left ventricle. Further, a previous study from our department showed that the optimal V-V interval was significantly longer, necess ...
... of activation resulting from LV pacing compared to intrinsic conduction could necessitate earlier left-sided activation to restore balanced electrical activation of the left ventricle. Further, a previous study from our department showed that the optimal V-V interval was significantly longer, necess ...
James M. Norton
... stress” in both definitions helps the student appreciate both the complexities of cardiac pathophysiology and the rationale for therapeutic intervention. ...
... stress” in both definitions helps the student appreciate both the complexities of cardiac pathophysiology and the rationale for therapeutic intervention. ...
ANTIARRHYTHMIC THERAPY FOR ATRIAL
... tachyarrhythmias such as atrial flutter (AFL) or atrial fibrillation (AF). The optimal use of antiarrhytmic drug therapy depends in part on understanding the underlying mechanisms of AFL and AF and pharmacodynamis of each antiarrhythmic drug. Currently, there is a large body of experimental and clin ...
... tachyarrhythmias such as atrial flutter (AFL) or atrial fibrillation (AF). The optimal use of antiarrhytmic drug therapy depends in part on understanding the underlying mechanisms of AFL and AF and pharmacodynamis of each antiarrhythmic drug. Currently, there is a large body of experimental and clin ...
How Harmful is Conventional Right Ventricular Apical Pacing
... patients with left ventricular dysfunction who do not “need” pacing. Taking into account that £10% of ICD patients have a class I pacing indication at the time of implant [51], physicians, when appropriate, should consider ICD programming that avoids frequent RV pacing. In the DAVID trial [29], VVI ...
... patients with left ventricular dysfunction who do not “need” pacing. Taking into account that £10% of ICD patients have a class I pacing indication at the time of implant [51], physicians, when appropriate, should consider ICD programming that avoids frequent RV pacing. In the DAVID trial [29], VVI ...
Universitat Autònoma de Barcelona
... have lost my patience many times in the unceasing visits to \the valley of shit"1 . However, she always gave me the best guidance, she cheered me no matter how hard I got locked. Although I might have seen constantly in distress, you made me enjoy every minute of this venture with your irreplaceable ...
... have lost my patience many times in the unceasing visits to \the valley of shit"1 . However, she always gave me the best guidance, she cheered me no matter how hard I got locked. Although I might have seen constantly in distress, you made me enjoy every minute of this venture with your irreplaceable ...
Current and Evolving Echocardiographic Techniques for the Quantitative Evaluation
... according to the application for measuring slopes and time intervals: high sweep speed for measuring slopes in a few beats and low sweep speed for measuring peak values in several beats. Some imaging systems enable retrospective adjustments of sweep speed in stored data without a loss of data qualit ...
... according to the application for measuring slopes and time intervals: high sweep speed for measuring slopes in a few beats and low sweep speed for measuring peak values in several beats. Some imaging systems enable retrospective adjustments of sweep speed in stored data without a loss of data qualit ...
PDF Article
... inner cavity area of Bio (12.6 6 0.20 mm2) did not differ significantly from that of F1B (13.8 6 0.21 mm2). However, the myocardial area of Bio (48.3 6 0.70 mm2) was significantly (p , 0.01) larger than that of F1B (38.9 6 0.69 mm2). The histological examination revealed focal myocyte degeneration w ...
... inner cavity area of Bio (12.6 6 0.20 mm2) did not differ significantly from that of F1B (13.8 6 0.21 mm2). However, the myocardial area of Bio (48.3 6 0.70 mm2) was significantly (p , 0.01) larger than that of F1B (38.9 6 0.69 mm2). The histological examination revealed focal myocyte degeneration w ...
The Only EKG Book You`ll Ever Need, 5th Edition
... almost before it becomes available, a simple little electrical gizm o, more than a century old, still holds the key to diagnosing so many critically important clinical disorders, from m ild palpitations and diz ziness to life-threatening heart attacks and arrhythmias. The EKG predates relativity, qu ...
... almost before it becomes available, a simple little electrical gizm o, more than a century old, still holds the key to diagnosing so many critically important clinical disorders, from m ild palpitations and diz ziness to life-threatening heart attacks and arrhythmias. The EKG predates relativity, qu ...
Cardiac phase-dependent time normalization reduces - VU-dare
... ARDIAC PUMP FUNCTION is essential to provide oxygen and nutrients to tissues. Changes, and especially a decrease, in pump function may be life threatening. Quantification of pump function in health and disease is, therefore, of great importance. Factors that affect pump function are heart rate, vent ...
... ARDIAC PUMP FUNCTION is essential to provide oxygen and nutrients to tissues. Changes, and especially a decrease, in pump function may be life threatening. Quantification of pump function in health and disease is, therefore, of great importance. Factors that affect pump function are heart rate, vent ...
Usefulness of the 12-lead electrocardiogram in the follow
... Cardiac resynchronization therapy (CRT) has added a new dimension to the electrocardiographic evaluation of pacemaker function. During left ventricular (LV) pacing from the posterior or posterolateral coronary vein, a correctly positioned lead V1 registers a tall R wave and there is right axis devia ...
... Cardiac resynchronization therapy (CRT) has added a new dimension to the electrocardiographic evaluation of pacemaker function. During left ventricular (LV) pacing from the posterior or posterolateral coronary vein, a correctly positioned lead V1 registers a tall R wave and there is right axis devia ...
L-Carnitine : Effect on Morbidities and Risk Factors Important to
... Figure 2 Effect of L-carnitine on glucose oxidation rates in control and diabetic rat heart hearts before and after ischaemia. Values are the means of 7 untreated control, 8 L-carnitine treated control, 8 untreated diabetic and 8 L-carnitine treated diabetic rat hearts. Error bars = SEM. Glucose oxi ...
... Figure 2 Effect of L-carnitine on glucose oxidation rates in control and diabetic rat heart hearts before and after ischaemia. Values are the means of 7 untreated control, 8 L-carnitine treated control, 8 untreated diabetic and 8 L-carnitine treated diabetic rat hearts. Error bars = SEM. Glucose oxi ...
Imaging cellular signals in the heart in vivo: Cardiac expression of
... peptide was introduced N-terminal to the original methionine reported as part of GCaMP1 (11). Mutations resulting in augmented brightness and thermal stability are shown in green. (b) Excitation and emission spectra for GCaMP2 in chelating (10 mM EGTA) and saturating (10 mM) Ca2⫹ solutions. At satur ...
... peptide was introduced N-terminal to the original methionine reported as part of GCaMP1 (11). Mutations resulting in augmented brightness and thermal stability are shown in green. (b) Excitation and emission spectra for GCaMP2 in chelating (10 mM EGTA) and saturating (10 mM) Ca2⫹ solutions. At satur ...
Myofiber prestretch magnitude determines regional systolic function
... remodeling (27, 40). Badke and coworkers (4) first described the effects of ectopic activation on regional mechanics in normal hearts. During ventricular epicardial pacing, early shortening (prior to aortic valve opening) occurs near the LV pacing site, whereas late-activated regions lengthen or “pr ...
... remodeling (27, 40). Badke and coworkers (4) first described the effects of ectopic activation on regional mechanics in normal hearts. During ventricular epicardial pacing, early shortening (prior to aortic valve opening) occurs near the LV pacing site, whereas late-activated regions lengthen or “pr ...
The Fontan circulation: who controls cardiac output?
... determinants mentioned w1, 2x. It is important to recognise that augmentation of cardiac output is extremely dependent upon preload reserve. Exercise induced increases in cardiac output are partly explained by the Frank Starling mechanism, but left ventricular filling is more important than myocardi ...
... determinants mentioned w1, 2x. It is important to recognise that augmentation of cardiac output is extremely dependent upon preload reserve. Exercise induced increases in cardiac output are partly explained by the Frank Starling mechanism, but left ventricular filling is more important than myocardi ...
Noninvasive single-beat determination of left ventricular end
... performance and heart interaction with the systemic vasculature (8 –13). However, Ees determination has generally required invasively measured LV pressure and volumes recorded over a range of cardiac loading. This has hampered the broader application of this parameter to clinical heart failure diagn ...
... performance and heart interaction with the systemic vasculature (8 –13). However, Ees determination has generally required invasively measured LV pressure and volumes recorded over a range of cardiac loading. This has hampered the broader application of this parameter to clinical heart failure diagn ...
NIH Public Access - IUPUI ScholarWorks
... using a canine model of myocardial infarction. The results show a persistent elevation of NGF levels in aorta and coronary sinus within 1 month after myocardial infarction. NGF and growth associated protein 43 are transported retrogradely to the left stellate ganglion through retrograde axonal trans ...
... using a canine model of myocardial infarction. The results show a persistent elevation of NGF levels in aorta and coronary sinus within 1 month after myocardial infarction. NGF and growth associated protein 43 are transported retrogradely to the left stellate ganglion through retrograde axonal trans ...
Assessment of Myocardial Fibrosis With Cardiovascular Magnetic
... During the chronic phase of infarction, when a dense fibrotic scar replaces the infarcted myocardium, Mahrholdt et al. (17) showed the accuracy and the clinical reproducibility of delayed enhancement for infarct size determination. Moreover, Ricciardi et al. (48) and Wu et al. (49) showed the higher ...
... During the chronic phase of infarction, when a dense fibrotic scar replaces the infarcted myocardium, Mahrholdt et al. (17) showed the accuracy and the clinical reproducibility of delayed enhancement for infarct size determination. Moreover, Ricciardi et al. (48) and Wu et al. (49) showed the higher ...
PDF Article - ScienceDirect
... age from a few months of fetal development to the ninth decade of life. For comparative purposes I have similarly studied hearts of monkeys, cows, horses, bats, rabbits, chickens and many dogs. The method for those studies has been previously published (1). In the standard process for preparing the ...
... age from a few months of fetal development to the ninth decade of life. For comparative purposes I have similarly studied hearts of monkeys, cows, horses, bats, rabbits, chickens and many dogs. The method for those studies has been previously published (1). In the standard process for preparing the ...
Atrioventricular Conduction
... in the conduction and/or formation of subsequent beats.1 The concept of concealed conduction can be applied to explain (1) post-extrasystolic prolongation of the P-R interval, (2) the irregularity of the ventricular response during atrial fibrillation, (3) the slower ventricular response during atri ...
... in the conduction and/or formation of subsequent beats.1 The concept of concealed conduction can be applied to explain (1) post-extrasystolic prolongation of the P-R interval, (2) the irregularity of the ventricular response during atrial fibrillation, (3) the slower ventricular response during atri ...
Chapter 35 - Extras Springer
... perfusion imaging to routine echocardiographic assessment of RWMAs and clinical variables in patients with suspected cardiac chest pain and nondiagnostic electrocardiograms improved the prediction of cardiac events. The addition of perfusion imaging in patients with suspected cardiac chest pain and ...
... perfusion imaging to routine echocardiographic assessment of RWMAs and clinical variables in patients with suspected cardiac chest pain and nondiagnostic electrocardiograms improved the prediction of cardiac events. The addition of perfusion imaging in patients with suspected cardiac chest pain and ...
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.