Ventricular fibrillation: evolution of the multiple
... simulations showed that such irregular activity can be self-sustaining if the size of the tissue and the number of wavelets are su¯ ciently large. Moe’s hypothesis was put on a solid theoretical basis by Krinsky (1966). In his seminal work, scarcely known in Western literature, Krinsky studied a cla ...
... simulations showed that such irregular activity can be self-sustaining if the size of the tissue and the number of wavelets are su¯ ciently large. Moe’s hypothesis was put on a solid theoretical basis by Krinsky (1966). In his seminal work, scarcely known in Western literature, Krinsky studied a cla ...
THE CARDIAC IMPULSE AND THE MOTION OF THE HEART
... The amplitude of the impulse in the normal subject was not large, the greatest excursion in the impulse cardiogram being 1 cm. The influence of nutrition upon the amplitude of the apical impulse was not found to be important in the group of healthy subjects examined, there being no general relation ...
... The amplitude of the impulse in the normal subject was not large, the greatest excursion in the impulse cardiogram being 1 cm. The influence of nutrition upon the amplitude of the apical impulse was not found to be important in the group of healthy subjects examined, there being no general relation ...
Rhythm management devices
... A fixed-rate pacemaker is one that fires at a specific preset rate, regardless of the patient's own heart rate. II. A demand pacemaker literally functions "on demand" (i.e., only when the patient's heart rate falls below a preset value). A demand pacemaker has two distinct aspects: I. a sensing mech ...
... A fixed-rate pacemaker is one that fires at a specific preset rate, regardless of the patient's own heart rate. II. A demand pacemaker literally functions "on demand" (i.e., only when the patient's heart rate falls below a preset value). A demand pacemaker has two distinct aspects: I. a sensing mech ...
Post-mortem study of the association between cardiac iron and
... burden of morbidity and mortality, of which thalassaemia is the commonest single gene disorder worldwide [1]. The transfusions that are necessary for survival cause tissue iron loading, and this ultimately results in heart failure as the major cause of death [2, 3]. Histopathological studies of pati ...
... burden of morbidity and mortality, of which thalassaemia is the commonest single gene disorder worldwide [1]. The transfusions that are necessary for survival cause tissue iron loading, and this ultimately results in heart failure as the major cause of death [2, 3]. Histopathological studies of pati ...
Atrial Septal defect (ASD) Device Closure in Detail
... we do not claim the same. This site should not be used as an alternative to medical advice in any way be any one. ...
... we do not claim the same. This site should not be used as an alternative to medical advice in any way be any one. ...
as PDF
... Millions of pacemakers have been implanted worldwide and, as a result the quality of life for these patients has been drastically improved, not forgetting the reduced morbidity and mortality. The first stimulations through transthoracic electrodes were pioneered by Zoll in the early fifties (Zoll, 1 ...
... Millions of pacemakers have been implanted worldwide and, as a result the quality of life for these patients has been drastically improved, not forgetting the reduced morbidity and mortality. The first stimulations through transthoracic electrodes were pioneered by Zoll in the early fifties (Zoll, 1 ...
SYMPOSIUM ON CONGESTIVE HEART FAILURE
... group. For example, the behavior of endocardial fibroelastosis in a given ease may classify it in any of the first 3 groups. Functional derangements of the heart or eirculatioln (vaso-vagal syncope, rapid heart action, cardiac arrest) also may result in circulatory failure in the absence of myocardi ...
... group. For example, the behavior of endocardial fibroelastosis in a given ease may classify it in any of the first 3 groups. Functional derangements of the heart or eirculatioln (vaso-vagal syncope, rapid heart action, cardiac arrest) also may result in circulatory failure in the absence of myocardi ...
incidence and course of acute myocardial infarction complicated by
... ischemia of the sinus and atrioventricular nodes or atrial myocardium. In later period of AMI SVT develop due to early remodelling of left ventricle, dilatation of atria, development of congestive heart failure.1,3 The most common sustained SVT complicating AMI is atrial fibrillation. Atrial flutter ...
... ischemia of the sinus and atrioventricular nodes or atrial myocardium. In later period of AMI SVT develop due to early remodelling of left ventricle, dilatation of atria, development of congestive heart failure.1,3 The most common sustained SVT complicating AMI is atrial fibrillation. Atrial flutter ...
Pacemaker Lead Perforation during Right Ventricular Outflow Tract
... et al., demonstrated that septal RV outflow tract stimulation did not always lead to a negative complex in lead I [9]. It was not possible to develop an algorithm that correlates ECG parameters with lead position because QRS morphology of RV outflow tract pacing sites may be due to variations in bas ...
... et al., demonstrated that septal RV outflow tract stimulation did not always lead to a negative complex in lead I [9]. It was not possible to develop an algorithm that correlates ECG parameters with lead position because QRS morphology of RV outflow tract pacing sites may be due to variations in bas ...
Long-term Use of Anti-inflammatory Drugs and Risk of Atrial Fibrillation
... Patients had to be registered with the general practitioner for at least 2 years, and individuals with a history of cancer or heart rhythm disorders were not included. For the purposes of the studies, patients whose arrhythmia persisted for more than 1 week were classified as having chronic AF. Thos ...
... Patients had to be registered with the general practitioner for at least 2 years, and individuals with a history of cancer or heart rhythm disorders were not included. For the purposes of the studies, patients whose arrhythmia persisted for more than 1 week were classified as having chronic AF. Thos ...
Percussion pacing*an almost forgotten procedure for
... haemodynamically unstable bradyarrhythmias, in particular in CHB with or without ventricular escape rhythm (‘P wave asystole’). the presence of atrial activity is regarded as a prerequisite for successful stimulation. Instantly started percussion pacing can bridge the time it takes to establish tran ...
... haemodynamically unstable bradyarrhythmias, in particular in CHB with or without ventricular escape rhythm (‘P wave asystole’). the presence of atrial activity is regarded as a prerequisite for successful stimulation. Instantly started percussion pacing can bridge the time it takes to establish tran ...
Complete Heart Block Complicating Acute Myocardial Infarction: A
... for patients with inferior infarct where 40 of the 48 patients reverted to normal sinus rhythm within a week. In patients with complete heart block and inferior infarct, the idioventricular rate ranges from 40 to 70/min., which is usually sufficient to maintain an effective circulation for a patient ...
... for patients with inferior infarct where 40 of the 48 patients reverted to normal sinus rhythm within a week. In patients with complete heart block and inferior infarct, the idioventricular rate ranges from 40 to 70/min., which is usually sufficient to maintain an effective circulation for a patient ...
Classification of Electrocardiogram (ECG) Waveforms for the
... the Bandpass filter & differentiation this suppresses P and T waves. Squaring makes all the results positive and emphasising from large differences arising for the QRS complexes ...
... the Bandpass filter & differentiation this suppresses P and T waves. Squaring makes all the results positive and emphasising from large differences arising for the QRS complexes ...
T H E T R U T H THE HEART TRUTH
... Calcifications are an early sign of CHD. The test can show whether you’re at increased risk for a heart attack or other heart problems before other signs and symptoms occur. EBCT isn’t routinely used to diagnose CHD because its accuracy isn’t yet known. Unfortunately, standard tests for CHD aren’t d ...
... Calcifications are an early sign of CHD. The test can show whether you’re at increased risk for a heart attack or other heart problems before other signs and symptoms occur. EBCT isn’t routinely used to diagnose CHD because its accuracy isn’t yet known. Unfortunately, standard tests for CHD aren’t d ...
Caffeine and Ventricular Arrhythmias
... went electrophysiological testing before and 1 hour after coffee ingestion. Mean ( \m=+-\SEM) plasma caffeine level achieved after coffee consumption was 6.2 \m=+-\0.5 mg/L. Mean plasma catecholamine and potassium values were not altered significantly 1 hour following caffeine ingestion. The number ...
... went electrophysiological testing before and 1 hour after coffee ingestion. Mean ( \m=+-\SEM) plasma caffeine level achieved after coffee consumption was 6.2 \m=+-\0.5 mg/L. Mean plasma catecholamine and potassium values were not altered significantly 1 hour following caffeine ingestion. The number ...
Congestive Heart Failure
... Congestive heart failure is a common condition that affects about 5 million Americans every year. Although it is more common in older people, heart failure can happen at any age. It is possible to control this disease of the heart. If not successfully controlled, heart failure can cause serious disa ...
... Congestive heart failure is a common condition that affects about 5 million Americans every year. Although it is more common in older people, heart failure can happen at any age. It is possible to control this disease of the heart. If not successfully controlled, heart failure can cause serious disa ...
DIasToLIC HEaRT FaILuRE – EmERgIng TREnDs
... a substantial increase in left atrial and pulmonary acute venous pressures and may result in pulmonary oedema15,16. A substantial number of patients with diastolic heart failure have reduced stroke volume and reduced cardiac output despite normal ejection fraction.The capacity to augment cardiac out ...
... a substantial increase in left atrial and pulmonary acute venous pressures and may result in pulmonary oedema15,16. A substantial number of patients with diastolic heart failure have reduced stroke volume and reduced cardiac output despite normal ejection fraction.The capacity to augment cardiac out ...
A comparative study of contractility of the heart ventricle in some
... not statistically significant. Possible causes for these differences are discussed. We suppose a large variety in ventricular contractility among amphibian and reptilian species having the same ventricular activation pattern. This variety may be conditioned by heart anatomy, intracardiac shunting, l ...
... not statistically significant. Possible causes for these differences are discussed. We suppose a large variety in ventricular contractility among amphibian and reptilian species having the same ventricular activation pattern. This variety may be conditioned by heart anatomy, intracardiac shunting, l ...
Diurnal variations of the dominant cycle length of chronic atrial
... and heart rate. There was a significant correlation between the mean R-R interval and DACL (r ⫽ 0.30, P ⬍ 0.000001), with long DACL corresponding to long R-R intervals. The correlation was higher during the night (r ⫽ 0.44, P ⫽ 0.000001) than during the day (r ⫽ ...
... and heart rate. There was a significant correlation between the mean R-R interval and DACL (r ⫽ 0.30, P ⬍ 0.000001), with long DACL corresponding to long R-R intervals. The correlation was higher during the night (r ⫽ 0.44, P ⫽ 0.000001) than during the day (r ⫽ ...
Victoria Yuskaitis Biology 111: Briggs The effects of exercise, gender
... rates. In addition, Sloan et. al. (2009) suggest that estrogen causes diminished autonomic responses in women. My data correlated with the above findings, as men were shown to have lower heart rates and faster recovery rates than women. According to Table 3, athletes’ pulse rates, resting rates, and ...
... rates. In addition, Sloan et. al. (2009) suggest that estrogen causes diminished autonomic responses in women. My data correlated with the above findings, as men were shown to have lower heart rates and faster recovery rates than women. According to Table 3, athletes’ pulse rates, resting rates, and ...
Effectiveness of Implantable Cardioverter
... in the prevention of sudden cardiac death in patients with heart failure. However, questions remain that regard the clinical benefit of these therapies in different patient subgroups. Specifically, the role of implantable cardioverterdefibrillators in women with heart failure for the primary prevent ...
... in the prevention of sudden cardiac death in patients with heart failure. However, questions remain that regard the clinical benefit of these therapies in different patient subgroups. Specifically, the role of implantable cardioverterdefibrillators in women with heart failure for the primary prevent ...
The Heart as a Pump
... A. Misconceptions frequently present before carrying out the exercise: 1. The only way to increase cardiac output is via an increased heart rate: Rate is the cardiac variable that we are most aware of. Not surprisingly, most students usually identify only this variable when asked about how the heart ...
... A. Misconceptions frequently present before carrying out the exercise: 1. The only way to increase cardiac output is via an increased heart rate: Rate is the cardiac variable that we are most aware of. Not surprisingly, most students usually identify only this variable when asked about how the heart ...