Prevalence of Left Ventricular Regional Dysfunction in
... to have probable ARVD. Probable ARVD may represent an early spectrum of the disease with possible progression to diagnostically more overt forms with time. In a high risk population (such as positive mutation carrier status or positive family history), the classification of probable ARVD may be part ...
... to have probable ARVD. Probable ARVD may represent an early spectrum of the disease with possible progression to diagnostically more overt forms with time. In a high risk population (such as positive mutation carrier status or positive family history), the classification of probable ARVD may be part ...
Subpulmonary Obstruction Due to Aneurysmal Ventricular Septum
... normally related great arteries36,38 and constitute one of the most common mechanisms by which the ventricular septal defects close spontaneously. Although popularly called “ventricular septal aneurysm,” it may not be a true aneurysm, nor derived from the ventricular septum. The origin of the aneury ...
... normally related great arteries36,38 and constitute one of the most common mechanisms by which the ventricular septal defects close spontaneously. Although popularly called “ventricular septal aneurysm,” it may not be a true aneurysm, nor derived from the ventricular septum. The origin of the aneury ...
this PDF file
... are major criteria in the definition of arrhythmogenic cardiomyopathy very well characterising conduction delay of the right ventricle. Another clue for ECG definition is QRS fragmentation is all leads including “pre-silons” (QRS fragmentation in the Q wave), “topsilons” (QRS fragmentation in the R ...
... are major criteria in the definition of arrhythmogenic cardiomyopathy very well characterising conduction delay of the right ventricle. Another clue for ECG definition is QRS fragmentation is all leads including “pre-silons” (QRS fragmentation in the Q wave), “topsilons” (QRS fragmentation in the R ...
A Study of Left ventricular hypertrophy in hypertension
... Abstract- Introduction: Increased arterial pressure is one of the most important public health problem in developed as well as in developing countries.It is common , asympomatic, readily detectable,easily treatabale. Burden of hypertension increases with age among individuals aged above 60 years, th ...
... Abstract- Introduction: Increased arterial pressure is one of the most important public health problem in developed as well as in developing countries.It is common , asympomatic, readily detectable,easily treatabale. Burden of hypertension increases with age among individuals aged above 60 years, th ...
PDF - Circulation: Arrhythmia and Electrophysiology
... Methods and Results—We conducted a multicenter cohort study in patients with transposition of the great arteries to determine actuarial rates of implantable cardioverter defibrillator shocks, identify risk factors, assess underlying arrhythmias, and characterize complications. Overall, 37 patients ( ...
... Methods and Results—We conducted a multicenter cohort study in patients with transposition of the great arteries to determine actuarial rates of implantable cardioverter defibrillator shocks, identify risk factors, assess underlying arrhythmias, and characterize complications. Overall, 37 patients ( ...
Analysis of the Underlying Mechanism of Frank
... In this study, a human infantile hemodynamics model proposed by Nobuaki et al.[5] (Nobuaki model) was used with some modifications. Nobuaki model, which can simulate baroreceptor reflex against modulations of the head-up tilt angle of the body, is composed of a vascular system model, a left ventricu ...
... In this study, a human infantile hemodynamics model proposed by Nobuaki et al.[5] (Nobuaki model) was used with some modifications. Nobuaki model, which can simulate baroreceptor reflex against modulations of the head-up tilt angle of the body, is composed of a vascular system model, a left ventricu ...
A Pocket Guide to Common Arrhythmias
... Contraction and relaxation of cardiac muscle occurs as a result of electrical changes within the myocardial cells, referred to as depolarisation and re-polarisation. Electrodes attached to the skin on the limbs and chest wall can sense this electrical activity and transmit it to an electrocardiograp ...
... Contraction and relaxation of cardiac muscle occurs as a result of electrical changes within the myocardial cells, referred to as depolarisation and re-polarisation. Electrodes attached to the skin on the limbs and chest wall can sense this electrical activity and transmit it to an electrocardiograp ...
SAED Guide revised Jan 2008 - Grampians Region Health
... the ECG from the pads applied to the chest. Some AEDs have screens that show the rhythms, some do not. The AED identifies the heart rhythms. The operator does not need to be able to identify the hearts rhythm or whether there is a need for defibrillation. It is however useful to have a basic knowled ...
... the ECG from the pads applied to the chest. Some AEDs have screens that show the rhythms, some do not. The AED identifies the heart rhythms. The operator does not need to be able to identify the hearts rhythm or whether there is a need for defibrillation. It is however useful to have a basic knowled ...
Properties of Cardiac Muscle
... the stronger will be the force of its contraction; However, overstretching the fiber as in heart failure its power of contractility decreases’ i.e. within limits, the power of contraction is directly proportional to the initial length of the ms. ■ Cardiac ms accommodates itself (up to certain limit) ...
... the stronger will be the force of its contraction; However, overstretching the fiber as in heart failure its power of contractility decreases’ i.e. within limits, the power of contraction is directly proportional to the initial length of the ms. ■ Cardiac ms accommodates itself (up to certain limit) ...
ECG TUTORIAL: How to Analyze A Rhythm - sha
... • P Waves: No true P waves; chaotic atrial activity • PR Interval: None • QRS: Normal (0.06–0.10 sec) ...
... • P Waves: No true P waves; chaotic atrial activity • PR Interval: None • QRS: Normal (0.06–0.10 sec) ...
Emergencies related to implantable cardioverter
... needed. Benzodiazepines have no proarrhythmic effects and may help ameliorate ventricular arrhythmias facilitated by high sympathetic tone (14). Methohexital is a safe short-acting anesthetic agent in patients with ICDs (15). Tricyclic antidepressants and neuroleptics can exacerbate cardiac arrhythm ...
... needed. Benzodiazepines have no proarrhythmic effects and may help ameliorate ventricular arrhythmias facilitated by high sympathetic tone (14). Methohexital is a safe short-acting anesthetic agent in patients with ICDs (15). Tricyclic antidepressants and neuroleptics can exacerbate cardiac arrhythm ...
Lesson №1 Anatomy of cardiovascular system. The coronary
... 1) less than 20/min; 2) 20-30/min; 3) 40-50/min 4) 60-80/min 5) 90-100/min 7. For the substitute rhythm of Purkinje fibers is characterized by the frequency of: 1) less than 20/min; 2) 20-30/min; 3) 40-50/min 4) 60-80/min 8. Speed of the impulse depends on: 1) the rate and amplitude of the “0” phase ...
... 1) less than 20/min; 2) 20-30/min; 3) 40-50/min 4) 60-80/min 5) 90-100/min 7. For the substitute rhythm of Purkinje fibers is characterized by the frequency of: 1) less than 20/min; 2) 20-30/min; 3) 40-50/min 4) 60-80/min 8. Speed of the impulse depends on: 1) the rate and amplitude of the “0” phase ...
Gene Therapy in Large Animal Models of Human Cardiovascular
... Definition and Classification of Cardiomyopathies recommended updating its classification system to better reflect the current understanding of the etiology and pathogenesis of cardiomyopathies, which are now classified by dominant pathophysiology (Richardson et al. 1996). Dilated cardiomyopathy may ...
... Definition and Classification of Cardiomyopathies recommended updating its classification system to better reflect the current understanding of the etiology and pathogenesis of cardiomyopathies, which are now classified by dominant pathophysiology (Richardson et al. 1996). Dilated cardiomyopathy may ...
Atrial Fibrillation Management: 2005
... • No effective or safe medications for atrial fibrillation • Anti-arrhythmics may increase mortality or expose patient to significant toxicities • Increasing risk factors: age, hypertension, heart failure JACC 2003;41:2185-2196, Circulation 2004;110:1042-1046 ...
... • No effective or safe medications for atrial fibrillation • Anti-arrhythmics may increase mortality or expose patient to significant toxicities • Increasing risk factors: age, hypertension, heart failure JACC 2003;41:2185-2196, Circulation 2004;110:1042-1046 ...
Preexcitation syndrome in Children
... and WPW may be at a higher risk to develop symptoms.6 These patients frequently have dilated cardiac chambers which provide for atrial or ventricular extrasystole and initiate reentrant tachycardia. In these patients, tachycardia may produce a low cardiac output state or significant cyanosis from a ...
... and WPW may be at a higher risk to develop symptoms.6 These patients frequently have dilated cardiac chambers which provide for atrial or ventricular extrasystole and initiate reentrant tachycardia. In these patients, tachycardia may produce a low cardiac output state or significant cyanosis from a ...
ASSOCIATION OF SYSTOLIC DYSFUNCTION WITH LEFT
... function of the left ventricle. Although left ventricular hypertrophy and diastolic dysfunction affect different parameters of left ventricular systolic function, the combination of both phenomena is the scenario with further deterioration of left ventricular inotropic properties. The left ventricle ...
... function of the left ventricle. Although left ventricular hypertrophy and diastolic dysfunction affect different parameters of left ventricular systolic function, the combination of both phenomena is the scenario with further deterioration of left ventricular inotropic properties. The left ventricle ...
Influence of pneumoperitoneum on left ventricular filling pressures
... natriuretic peptide in estimation LV filling pressures in patients presenting with dyspnea. Laparoscopic surgery involves less trauma than open operation. However, there is concern about the cardiovascular changes that may be induced by the carbon dioxide pneumoperitoneum (Pnp) needed to create work ...
... natriuretic peptide in estimation LV filling pressures in patients presenting with dyspnea. Laparoscopic surgery involves less trauma than open operation. However, there is concern about the cardiovascular changes that may be induced by the carbon dioxide pneumoperitoneum (Pnp) needed to create work ...
Clinical Management of the Patient with Atrial Fibrillation
... be considered in patients where anesthesia is either unavailable or unsafe. Ibutilide, a Class III antiarrhythmic, is the most commonly used agent for pharmacological conversion of AF. Ibutilide is a potassium channel blocker, prolongs the action potential and increases atrial refractoriness resulti ...
... be considered in patients where anesthesia is either unavailable or unsafe. Ibutilide, a Class III antiarrhythmic, is the most commonly used agent for pharmacological conversion of AF. Ibutilide is a potassium channel blocker, prolongs the action potential and increases atrial refractoriness resulti ...
Pacemaker Syndrome During Managed Ventricular
... pacing is scheduled to occur after any A–A interval in which there is no ventricular sensed event, and occurs 80 ms after the scheduled atrial pace (i.e., 80 ms after the escape A–A interval). MVP switches the device from AAI(R) to DDD(R) when there is evidence of persistent loss of AV conduction de ...
... pacing is scheduled to occur after any A–A interval in which there is no ventricular sensed event, and occurs 80 ms after the scheduled atrial pace (i.e., 80 ms after the escape A–A interval). MVP switches the device from AAI(R) to DDD(R) when there is evidence of persistent loss of AV conduction de ...
COMMON CARDIAC ARRHYTHMIAS
... sinus node (sinus tachycardia or sinus bradycardia), the atrioventricular (AV) node, or the myocardium. Abnormal beats (more appropriately called depolarizations rather than beats or contractions) may arise through this mechanism from the atria, the AV junction, or the ventricles. Abnormal rhythms, ...
... sinus node (sinus tachycardia or sinus bradycardia), the atrioventricular (AV) node, or the myocardium. Abnormal beats (more appropriately called depolarizations rather than beats or contractions) may arise through this mechanism from the atria, the AV junction, or the ventricles. Abnormal rhythms, ...
When the Heart Stops
... AEDs are portable electronic devices that analyze the heart’s rhythm and provide an electrical shock. Defibrillation is the delivery of an electrical shock that may help re-establish an effective rhythm. Each minute that CPR and defibrillation are delayed, the victim’s chance for survival is red ...
... AEDs are portable electronic devices that analyze the heart’s rhythm and provide an electrical shock. Defibrillation is the delivery of an electrical shock that may help re-establish an effective rhythm. Each minute that CPR and defibrillation are delayed, the victim’s chance for survival is red ...
Ventricular Arrhythmias in Adult Aortic Stenosis
... ventricle and the consequent myocardial ischemia may trigger ventricular arrhythmias or bradyarrhythmias similar to those seen in acute myocardial infarc¬ tion, even in absence of significant coronary artery ...
... ventricle and the consequent myocardial ischemia may trigger ventricular arrhythmias or bradyarrhythmias similar to those seen in acute myocardial infarc¬ tion, even in absence of significant coronary artery ...
Comments on the 2015 ESC Guidelines for the Management of
... The writing has been simplified in this section and is more precise. The LVEF range of 30% to 40% and the differences between ischemic and nonischemic cardiomyopathy have been eliminated, and the same recommendations have been established for the 2 substrates (LVEF <35%). The new guidelines maintain ...
... The writing has been simplified in this section and is more precise. The LVEF range of 30% to 40% and the differences between ischemic and nonischemic cardiomyopathy have been eliminated, and the same recommendations have been established for the 2 substrates (LVEF <35%). The new guidelines maintain ...
Ventricular Electrical Heterogeneity in Experimental Diabetes
... The diabetic cardiomyopathy is associated with the electrophysiological alterations in the myocardium. The DM-related changes in the cardiac electrical properties, specifically the prolongation of action potential durations, have been well documented at the cellular level (Magyar et al. 1992, Zhang ...
... The diabetic cardiomyopathy is associated with the electrophysiological alterations in the myocardium. The DM-related changes in the cardiac electrical properties, specifically the prolongation of action potential durations, have been well documented at the cellular level (Magyar et al. 1992, Zhang ...
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.