Slow and Long-Lasting Modulation of
... Prolonged ventricular pacing induces T wave polarity changes that persist long after cessation of pacing. To examine how ventricular repolarization is modulated by prolonged changes in activation sequence, we studied the effect of ectopic pacing on the distribution of action potential durations (APD ...
... Prolonged ventricular pacing induces T wave polarity changes that persist long after cessation of pacing. To examine how ventricular repolarization is modulated by prolonged changes in activation sequence, we studied the effect of ectopic pacing on the distribution of action potential durations (APD ...
Arrhythmias and EKGs
... Wide QRS with a regular pattern and a rate of 150200 Patient will usually lose consciousness Treated with lidocaine; may help to have patient cough if they are still conscious May require DC shock ...
... Wide QRS with a regular pattern and a rate of 150200 Patient will usually lose consciousness Treated with lidocaine; may help to have patient cough if they are still conscious May require DC shock ...
Print - Circulation
... ABSTRACT Although the measurement of transmural pressure is important, calculation of transmural pressure is complicated by the difficulties in measuring pericardial pressure. Recently, flat balloons have been proposed to measure pericardial pressure. Over a wide range of volumes, right ventricular ...
... ABSTRACT Although the measurement of transmural pressure is important, calculation of transmural pressure is complicated by the difficulties in measuring pericardial pressure. Recently, flat balloons have been proposed to measure pericardial pressure. Over a wide range of volumes, right ventricular ...
ICH E10
... other risk factors (e.g., hypokalemia, structural heart disease, bradycardia). Thus, much emphasis has been placed on the potential proarrhythmic effects of pharmaceuticals that are associated with QT interval prolongation. Ventricular repolarization, determined by the duration of the cardiac action ...
... other risk factors (e.g., hypokalemia, structural heart disease, bradycardia). Thus, much emphasis has been placed on the potential proarrhythmic effects of pharmaceuticals that are associated with QT interval prolongation. Ventricular repolarization, determined by the duration of the cardiac action ...
Predictive Value of Beat-to-Beat QT Variability across Continuum of
... amplified QTVI separates 97.5% of healthy individuals from HF patients at risk, and therefore QTVI could be recommended for screening of cardiovascular death risk in the general population. Increased QT variability index: absolute increase in repolarization lability or predominantly decreased heart ...
... amplified QTVI separates 97.5% of healthy individuals from HF patients at risk, and therefore QTVI could be recommended for screening of cardiovascular death risk in the general population. Increased QT variability index: absolute increase in repolarization lability or predominantly decreased heart ...
Occurrence and predictors of left ventricular systolic dysfunction at
... identified as an important marker of poor prognosis. Aim: To assess the prevalence and course of LVSD at hospital discharge and in long-term follow-up in STEMI patients treated with primary percutaneous coronary intervention (pPCI). Methods: We enrolled 205 patients (157 male, 48 female) with a firs ...
... identified as an important marker of poor prognosis. Aim: To assess the prevalence and course of LVSD at hospital discharge and in long-term follow-up in STEMI patients treated with primary percutaneous coronary intervention (pPCI). Methods: We enrolled 205 patients (157 male, 48 female) with a firs ...
Current Perceptions of the Epidemiology of Atrial Fibrillation
... ratio [OR] 5 1.4) but was just short of significance on adjustment for other risk factors. Neither obesity nor alcohol intake seemed to be independently associated with the short-term risk for AF incidence in either gender. In other studies with sufficient power and numbers of individuals who consum ...
... ratio [OR] 5 1.4) but was just short of significance on adjustment for other risk factors. Neither obesity nor alcohol intake seemed to be independently associated with the short-term risk for AF incidence in either gender. In other studies with sufficient power and numbers of individuals who consum ...
Underuse of Oral Anticoagulation for Individuals with Atrial
... within 1 year in 25.4% of these patients, 45.7% were still taking warfarin at the end of follow-up (3.4 years).17 This rate of anticoagulation was lower (42%) in another population of 429 individuals with AF selected from 21 long-term care homes.18 According to the literature, factors that affect an ...
... within 1 year in 25.4% of these patients, 45.7% were still taking warfarin at the end of follow-up (3.4 years).17 This rate of anticoagulation was lower (42%) in another population of 429 individuals with AF selected from 21 long-term care homes.18 According to the literature, factors that affect an ...
comparison of blood pool gated spect with three diffe
... Materials and Methods: Forty patients whose gMPS were seen to be normal were included. Rest blood pool studies were performed in patients 3 days after the evaluation of gMPS, and the data were processed with 3 different programs: Emory Cardiac Toolbox (ECT), Quantitative Gated SPECT (QGS), and 4D-MS ...
... Materials and Methods: Forty patients whose gMPS were seen to be normal were included. Rest blood pool studies were performed in patients 3 days after the evaluation of gMPS, and the data were processed with 3 different programs: Emory Cardiac Toolbox (ECT), Quantitative Gated SPECT (QGS), and 4D-MS ...
All Hands Meeting 2005
... Heart disease is an important health problem. Worldwide, cardiovascular disease causes 19 million deaths annually, over 5 million between the ages of 30 and 69 years. Spectrum of acquired and congenital heart disease, multiple disease mechanisms. All disease mechanisms are difficult to study ...
... Heart disease is an important health problem. Worldwide, cardiovascular disease causes 19 million deaths annually, over 5 million between the ages of 30 and 69 years. Spectrum of acquired and congenital heart disease, multiple disease mechanisms. All disease mechanisms are difficult to study ...
Left Atrial Remodeling and Response to Valsartan in the Prevention
... randomization were considered in the multivariable models. The prognostic value of each echocardiographic variable was evaluated separately. Changes of echocardiografic variables from baseline to 12 months follow up were normally distributed, therefore analysis of covariance (ANCOVA) was used to eva ...
... randomization were considered in the multivariable models. The prognostic value of each echocardiographic variable was evaluated separately. Changes of echocardiografic variables from baseline to 12 months follow up were normally distributed, therefore analysis of covariance (ANCOVA) was used to eva ...
Shot Through the Heart and I`m OK : Procainamide Cardioversion of
... • No thromboembolic events were reported with 660 ED cardioversions • Few new, dangerous arrhythmias observed • Majority of patients (97%) discharged home ...
... • No thromboembolic events were reported with 660 ED cardioversions • Few new, dangerous arrhythmias observed • Majority of patients (97%) discharged home ...
Basic Life Support
... This ASHI Basic Life Support Version 8.0 Student Book is solely intended to facilitate certification in an ASHI Basic Life Support training class. The information in this handbook is furnished for that purpose and is subject to change without notice. ASHI certification may only be issued when an ASH ...
... This ASHI Basic Life Support Version 8.0 Student Book is solely intended to facilitate certification in an ASHI Basic Life Support training class. The information in this handbook is furnished for that purpose and is subject to change without notice. ASHI certification may only be issued when an ASH ...
Attitudes of Doctors Working in Abant Izzet Baysal
... improvements in the European Resuscitation Council guideline that is published every five years, and they do not receive sufficient education on this subject. In a study conducted on nurses, the rate of those who knew the correct number of cardiac compressions per minute was 66%, which was similar t ...
... improvements in the European Resuscitation Council guideline that is published every five years, and they do not receive sufficient education on this subject. In a study conducted on nurses, the rate of those who knew the correct number of cardiac compressions per minute was 66%, which was similar t ...
Ventricular Fibrillation and the Use of Automated
... downregulate the energy delivered by AEDs to allow their use in children. Pediatricians are now being asked whether AED programs should be implemented, and where they are being implemented, pediatricians are being asked to provide guidance on the use of AEDs in children. As AED programs expand, pedi ...
... downregulate the energy delivered by AEDs to allow their use in children. Pediatricians are now being asked whether AED programs should be implemented, and where they are being implemented, pediatricians are being asked to provide guidance on the use of AEDs in children. As AED programs expand, pedi ...
Pericardial Effusions – Diagnosis and Treatment
... corresponding pressures of the left atrium and ventricle; because of this, the right side of the heart is affected initially by tamponade. Progressive increases in intrapericardial pressure cause equalization of left and right ventricular filling pressures after which further increases in IPP cause ...
... corresponding pressures of the left atrium and ventricle; because of this, the right side of the heart is affected initially by tamponade. Progressive increases in intrapericardial pressure cause equalization of left and right ventricular filling pressures after which further increases in IPP cause ...
The Role Of Renin Angiotensin System In Atrial Fibrillation
... in the regulation of multiple cardiovascular, pulmonary and renal processes in humans.22 Systemic hypertension and heart failure are the most important risk factors associated with the development of AF.3,6,23,24 The activation of RAS plays an integral part in the neurohumoral processes leading to c ...
... in the regulation of multiple cardiovascular, pulmonary and renal processes in humans.22 Systemic hypertension and heart failure are the most important risk factors associated with the development of AF.3,6,23,24 The activation of RAS plays an integral part in the neurohumoral processes leading to c ...
Clinical use of ultrashort-lived radionuclide krypton-81m for
... results of both right heart catheterization and exercise radionuclide imaging studies for diagnostic evaluation of suspected cardiac disease were normal. Group II consisted of 18 patients (13 men and 5 women), aged 24 to 66 years (mean 45), with predominantly right ventricular abnormalities, and inc ...
... results of both right heart catheterization and exercise radionuclide imaging studies for diagnostic evaluation of suspected cardiac disease were normal. Group II consisted of 18 patients (13 men and 5 women), aged 24 to 66 years (mean 45), with predominantly right ventricular abnormalities, and inc ...
Modelling cardiac mechanical properties in three
... One of the simplest and most widely used material testing protocols is the uniaxial tension test. Laser di¬raction also makes it possible to measure sarcomere length under these conditions in small multicellular preparations like right ventricular trabeculae (ter Keurs 1995). However, such uniaxial ...
... One of the simplest and most widely used material testing protocols is the uniaxial tension test. Laser di¬raction also makes it possible to measure sarcomere length under these conditions in small multicellular preparations like right ventricular trabeculae (ter Keurs 1995). However, such uniaxial ...
Influence of Right Ventricular Filling Pressure on Left Ventricular
... of the wire was then brought out retrograde across the mitral valve following the finger and out the atrial appendage. Silastic tubing (1 mm in diameter) attached to a steel marker was tied to the wire and pulled back through the left atrium and the left ventricle so that it extended through the wal ...
... of the wire was then brought out retrograde across the mitral valve following the finger and out the atrial appendage. Silastic tubing (1 mm in diameter) attached to a steel marker was tied to the wire and pulled back through the left atrium and the left ventricle so that it extended through the wal ...
CORONARY ARTERIES
... SA Node (Sinoatrial Node) – Main pacemaker of the heart – in a healthy heart the SA node is in charge. The impulse starts here and has an intrinsic rate of 60100 beats per minute. Internodal tracts and Bachmann’s Bundle- impulse travels through the right and left atrium causing depolarization AV No ...
... SA Node (Sinoatrial Node) – Main pacemaker of the heart – in a healthy heart the SA node is in charge. The impulse starts here and has an intrinsic rate of 60100 beats per minute. Internodal tracts and Bachmann’s Bundle- impulse travels through the right and left atrium causing depolarization AV No ...
Role of autonomic reflexes in syncope associated with
... al . (1) did not find any difference in heart rate among patients with and without a history of syncope when atrial fibrillation was induced during electrophysiologic study . They therefore suggested that other factors may play a role in the genesis of the syncope . ...
... al . (1) did not find any difference in heart rate among patients with and without a history of syncope when atrial fibrillation was induced during electrophysiologic study . They therefore suggested that other factors may play a role in the genesis of the syncope . ...
Atrial Fibrillation Begets Heart Failure and Vice Versa
... Background—Atrial fibrillation (AF) and heart failure (HF) frequently coexist and together confer an adverse prognosis. The association of AF with HF subtypes has not been well described. We sought to examine differences in the temporal association of AF and HF with preserved versus reduced ejection ...
... Background—Atrial fibrillation (AF) and heart failure (HF) frequently coexist and together confer an adverse prognosis. The association of AF with HF subtypes has not been well described. We sought to examine differences in the temporal association of AF and HF with preserved versus reduced ejection ...
Arrhythmogenic Right Ventricular Dysplasia/Cardiomyopathy
... ARVD/C based on criteria of the International Task Force [Marcus et al 2010], but who do not meet criteria for a definite clinical diagnosis. For some of these individuals, identification of a disease-causing mutation in one of the ARVD/C-related genes fulfills the remaining criteria. 6. Although so ...
... ARVD/C based on criteria of the International Task Force [Marcus et al 2010], but who do not meet criteria for a definite clinical diagnosis. For some of these individuals, identification of a disease-causing mutation in one of the ARVD/C-related genes fulfills the remaining criteria. 6. Although so ...
Left ventricular long-axis changes in early diastole
... are available that relate long-axis changes in systole with those in diastole, particularly in subjects with diastolic dysfunction and a ‘ normal ’ left ventricular (LV) ejection fraction. A total of 311 subjects (including 105 normal healthy volunteers) aged 20–89 years with variable degrees of sys ...
... are available that relate long-axis changes in systole with those in diastole, particularly in subjects with diastolic dysfunction and a ‘ normal ’ left ventricular (LV) ejection fraction. A total of 311 subjects (including 105 normal healthy volunteers) aged 20–89 years with variable degrees of sys ...
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.