Trying to succeed when the right ventricle fails
... [10,16,18] of selected patients with ischemic or nonischemic cardiomyopathy, RV dysfunction, usually defined by right ventricular ejection fraction (RVEF) of less than 0.35, has been observed in more than 50%. Ghio et al. [10] demonstrated the independent and additive effects of RV dysfunction and p ...
... [10,16,18] of selected patients with ischemic or nonischemic cardiomyopathy, RV dysfunction, usually defined by right ventricular ejection fraction (RVEF) of less than 0.35, has been observed in more than 50%. Ghio et al. [10] demonstrated the independent and additive effects of RV dysfunction and p ...
Clinical Trials in Cardiac Rhythm Management
... 3 Kristensen L, Nielsen JC, Pedersen AK, Mortensen PT, Andersen HR. AV block and changes in pacing mode during long-term follow-up of 399 consecutive patients with sick sinus syndrome treated with an AAI/AAIR pacemaker.PACE 2001;24(3):358-365. 4 Andersen HR, Nielsen JC, Thomsen PE, et al. Long-term ...
... 3 Kristensen L, Nielsen JC, Pedersen AK, Mortensen PT, Andersen HR. AV block and changes in pacing mode during long-term follow-up of 399 consecutive patients with sick sinus syndrome treated with an AAI/AAIR pacemaker.PACE 2001;24(3):358-365. 4 Andersen HR, Nielsen JC, Thomsen PE, et al. Long-term ...
The Advanced Cardiovascular Life Support Guidelines
... Previously, 2 J/kg was the initial recommended dose, with 4 J/kg recommended for subsequent doses, whether the device was monophasic or biphasic. The new guidelines are 2 to 4 J/kg for the initial dose, and 4 J/kg or more for subsequent doses, with higher doses considered with a maximum of 10 J/kg o ...
... Previously, 2 J/kg was the initial recommended dose, with 4 J/kg recommended for subsequent doses, whether the device was monophasic or biphasic. The new guidelines are 2 to 4 J/kg for the initial dose, and 4 J/kg or more for subsequent doses, with higher doses considered with a maximum of 10 J/kg o ...
Implantable Cardioverter- Defibrillator Therapy in Clinical
... unavailable. Additional subgroups of LQTS patients at high risk of SCD who may benefit from ICD therapy include patients with known SCN5A mutations (these patients tend ...
... unavailable. Additional subgroups of LQTS patients at high risk of SCD who may benefit from ICD therapy include patients with known SCN5A mutations (these patients tend ...
The effect of thrombolytic therapy on QT dispersion in acute
... have a frequency of 2.3‑5.3% in day 1 and 2.5‑15% within the first 2 weeks.[2,3,28,30] In our study, none of the patients demonstrated VF within the 1st day; only one patient (5%) demonstrated VF within the 1st week after MI. In those studies, VT and AIVR frequencies have not been taken into conside ...
... have a frequency of 2.3‑5.3% in day 1 and 2.5‑15% within the first 2 weeks.[2,3,28,30] In our study, none of the patients demonstrated VF within the 1st day; only one patient (5%) demonstrated VF within the 1st week after MI. In those studies, VT and AIVR frequencies have not been taken into conside ...
Abnormal Myocardial and Coronary Vasculature Development in
... formation of ventricular conduction system. Hypoxia had a positive effect on normal sequence of maturation of the conduction system evaluated by optical mapping at ED7. In sections from ED9 hypoxic hearts we found, in addition to thinner ventricular walls, irregularities in development of coronary t ...
... formation of ventricular conduction system. Hypoxia had a positive effect on normal sequence of maturation of the conduction system evaluated by optical mapping at ED7. In sections from ED9 hypoxic hearts we found, in addition to thinner ventricular walls, irregularities in development of coronary t ...
Review on CFD simulation in heart with dilated cardiomyopathy and
... 112%) and ESV with thinner wall in anatomical data, while functionally with low EF (less than 45%) and decreased wall motion with fractional shortening less than 25%. Mitral regurgitation flow is considered to be a hemodynamic disorder [37]. MI is indicated by a bulge found at the affected area, thus ...
... 112%) and ESV with thinner wall in anatomical data, while functionally with low EF (less than 45%) and decreased wall motion with fractional shortening less than 25%. Mitral regurgitation flow is considered to be a hemodynamic disorder [37]. MI is indicated by a bulge found at the affected area, thus ...
Atrial Fibrillation After Lung Transplantation
... The mean age (±SD) of the population was 55 ± 11 years and 52% were male. A total of 48 patients (28%) developed AF in the postoperative period. Predictors of postoperative AF in multivariate analysis included: age (per decade) Odds Ratio (OR): 1.61, 95% confidence interval (CI) 1.10-2.34, p=0.01, p ...
... The mean age (±SD) of the population was 55 ± 11 years and 52% were male. A total of 48 patients (28%) developed AF in the postoperative period. Predictors of postoperative AF in multivariate analysis included: age (per decade) Odds Ratio (OR): 1.61, 95% confidence interval (CI) 1.10-2.34, p=0.01, p ...
1999 - Pediatrics
... but the persistence of the pressure overload results in a failure of or severe limitations in coronary artery development. These data support the hypothesis that vascular growth during this period of development is regulated, at least in part, by the rate and magnitude of myocardial growth. 1999 E ...
... but the persistence of the pressure overload results in a failure of or severe limitations in coronary artery development. These data support the hypothesis that vascular growth during this period of development is regulated, at least in part, by the rate and magnitude of myocardial growth. 1999 E ...
Cardiac magnetic resonance imaging for the diagnosis of
... using CMR imaging, but was seen in only one case by echocardiography. Again, we recommend CMR imaging diagnosis for cases where electrocardiography (ECG) and echocardiography data are discordant. CMR imaging allows noninvasive quantification of cardiac volumes and cardiac systolic function, which ar ...
... using CMR imaging, but was seen in only one case by echocardiography. Again, we recommend CMR imaging diagnosis for cases where electrocardiography (ECG) and echocardiography data are discordant. CMR imaging allows noninvasive quantification of cardiac volumes and cardiac systolic function, which ar ...
Back to the Basics: EKG Interpretation
... • P wave: the irritable junctional focus may also depolarize the atria from below in retrograde fashion; – Inverted P wave before each QRS – Inverted P wave after each QRS – Inverted P wave buried within each QRS • P-R: <0.12-0.20 sec • QRS: measures <0.12 sec ...
... • P wave: the irritable junctional focus may also depolarize the atria from below in retrograde fashion; – Inverted P wave before each QRS – Inverted P wave after each QRS – Inverted P wave buried within each QRS • P-R: <0.12-0.20 sec • QRS: measures <0.12 sec ...
The Effect of Conductivity Values on Activation Times and
... The activation time maps show significant differences depending on the conductivity set used, as do the defibrillation thresholds. The defibrillation thresholds vary by more than 20%, whereas the activation times for epicardial breakthrough and total depolarisation both vary by approximately 50%. It ...
... The activation time maps show significant differences depending on the conductivity set used, as do the defibrillation thresholds. The defibrillation thresholds vary by more than 20%, whereas the activation times for epicardial breakthrough and total depolarisation both vary by approximately 50%. It ...
in Patients with Severe Congestive Heart Failure
... of the nitroprusside dose that caused the closest numerical change in the variable being matched (i.e., mean aortic pressure or systemic vascular resistance). Of the 11 patients, one was excluded from this analysis because mean arterial pressure was not decreased by milrinone, and therefore, could n ...
... of the nitroprusside dose that caused the closest numerical change in the variable being matched (i.e., mean aortic pressure or systemic vascular resistance). Of the 11 patients, one was excluded from this analysis because mean arterial pressure was not decreased by milrinone, and therefore, could n ...
Guidelines ARVD New Criteria Circ 2010
... overt or severe end of the disease spectrum. Consequently, the 1994 criteria were highly specific but lacked sensitivity for early and familial disease. Methods and Results—Revision of the diagnostic criteria provides guidance on the role of emerging diagnostic modalities and advances in the genetic ...
... overt or severe end of the disease spectrum. Consequently, the 1994 criteria were highly specific but lacked sensitivity for early and familial disease. Methods and Results—Revision of the diagnostic criteria provides guidance on the role of emerging diagnostic modalities and advances in the genetic ...
Evaluation of Right and Left Ventricular Systolic and Diastolic
... and tissue Doppler echocardiographic imaging can predict early stage and progression of diabetic cardiomyopathic changes. Objective: The aim of this study is to assess the effect of type 1 diabetes on cardiac systolic and diastolic functions in both ventricles in patients without evidence of coronar ...
... and tissue Doppler echocardiographic imaging can predict early stage and progression of diabetic cardiomyopathic changes. Objective: The aim of this study is to assess the effect of type 1 diabetes on cardiac systolic and diastolic functions in both ventricles in patients without evidence of coronar ...
Bundle-Branch Block
... for age; R. wave voltage in lead Vi (V4R) > maximum normal for age; SV6 > maximum normal for age; qR in lead Vi (V4R) ; positive T wave in lead V1 (V4R) after the first 48 hours of life with R/S ratio > 1. We are currently engaged in an electrocardiographicpathologic correlation study of 180 infants ...
... for age; R. wave voltage in lead Vi (V4R) > maximum normal for age; SV6 > maximum normal for age; qR in lead Vi (V4R) ; positive T wave in lead V1 (V4R) after the first 48 hours of life with R/S ratio > 1. We are currently engaged in an electrocardiographicpathologic correlation study of 180 infants ...
Edwards, Daniel - Cardiff Metropolitan University
... describe the hypertrophy of the myocardium in response to repeated bouts of exercise (Maron, 1986). This hypertrophy of the myocardium allows for increased maximal stroke volume (SV ) and cardiac output (Q), both of which increase the ability of the heart to deliver more oxygen to the working muscle ...
... describe the hypertrophy of the myocardium in response to repeated bouts of exercise (Maron, 1986). This hypertrophy of the myocardium allows for increased maximal stroke volume (SV ) and cardiac output (Q), both of which increase the ability of the heart to deliver more oxygen to the working muscle ...
BASIC ECG INTERPRETATION
... cardiac events and both need urgent treatment. Normal serum potassium is 3.0-5.0 milliequivalents per litre of blood. ...
... cardiac events and both need urgent treatment. Normal serum potassium is 3.0-5.0 milliequivalents per litre of blood. ...
Copyright Information of the Article Published Online TITLE 12
... interval compared to the malignant form (horizontal/descending ST segment) which is associated with a significantly longer QRS duration (a prolonged QTc interval was defined as at least 440 ms for men and at least 460 ms for women). Therefore, benign ER appears to reflect earlier onset of repolariza ...
... interval compared to the malignant form (horizontal/descending ST segment) which is associated with a significantly longer QRS duration (a prolonged QTc interval was defined as at least 440 ms for men and at least 460 ms for women). Therefore, benign ER appears to reflect earlier onset of repolariza ...
NIH Public Access
... We were aware before study implementation that the use of the prehospital emergency care record to abstract data for inclusion in the study databases could be associated with incomplete data due to the need for rapid treatment in the field and consequent lack of time for EMS providers to complete th ...
... We were aware before study implementation that the use of the prehospital emergency care record to abstract data for inclusion in the study databases could be associated with incomplete data due to the need for rapid treatment in the field and consequent lack of time for EMS providers to complete th ...
Introduction - Australian Doctor
... If reversible causes have been corrected or excluded, then permanent pacemaker insertion in selected symptomatic patients is indicated. Some patients have an underlying neuromuscular disorder that predisposes them to cardiac disease and bundle branch block. These include myotonic dystrophy, Kearns–S ...
... If reversible causes have been corrected or excluded, then permanent pacemaker insertion in selected symptomatic patients is indicated. Some patients have an underlying neuromuscular disorder that predisposes them to cardiac disease and bundle branch block. These include myotonic dystrophy, Kearns–S ...
Long-term ventricular assist devices in current clinical
... the ascending aorta. Aortic valve may open, usually during exercise when veins contract and produce increased venous return to the heart. As a result of significant technological advancements with mechanical pumps in the last decade and their profound impact on the mainstream of our daily practice, ...
... the ascending aorta. Aortic valve may open, usually during exercise when veins contract and produce increased venous return to the heart. As a result of significant technological advancements with mechanical pumps in the last decade and their profound impact on the mainstream of our daily practice, ...
Early Repolarization Is an Independent Predictor of Occurrences of
... arly repolarization (ER), characterized by an elevation of the QRS-ST junction (J point) in leads other than V1 to V3 on the 12-lead ECG, has historically been regarded as an innocuous finding in healthy, young persons.1,2 While considered benign, the potential role of ER in arrhythmogenicity has be ...
... arly repolarization (ER), characterized by an elevation of the QRS-ST junction (J point) in leads other than V1 to V3 on the 12-lead ECG, has historically been regarded as an innocuous finding in healthy, young persons.1,2 While considered benign, the potential role of ER in arrhythmogenicity has be ...
Model versus non-model based left ventricular
... Accurate assessment of left ventricular (LV) indices is indispensable for children with cardiac disease having diagnostic and prognostic implications [1]. This is especially important for the decision making in small borderline ventricles as well as in dilated ventricles because of volume overload r ...
... Accurate assessment of left ventricular (LV) indices is indispensable for children with cardiac disease having diagnostic and prognostic implications [1]. This is especially important for the decision making in small borderline ventricles as well as in dilated ventricles because of volume overload r ...
Misdiagnosis of Arrhythmogenic Right Ventricular
... ARVD/C Misdiagnosis. Introduction: Diagnosis of arrhythmogenic right ventricular dysplasia/ cardiomyopathy (ARVD/C) has major implications for the management of patients and their first-degree relatives. Diagnosis is based on a set of criteria proposed by the International Task Force for Cardiomyopa ...
... ARVD/C Misdiagnosis. Introduction: Diagnosis of arrhythmogenic right ventricular dysplasia/ cardiomyopathy (ARVD/C) has major implications for the management of patients and their first-degree relatives. Diagnosis is based on a set of criteria proposed by the International Task Force for Cardiomyopa ...
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.