Caffeine and Cardiac Arrhythmias: A Review of the Evidence
... magnitude of the release is 6-fold less elevated than the increase noted during exercise.51 Several human epidemiologic studies have been performed to probe the link between caffeine and arrhythmia, with mixed results. An epidemiologic survey of 7311 healthy men aged 37-57 years who underwent 2-minu ...
... magnitude of the release is 6-fold less elevated than the increase noted during exercise.51 Several human epidemiologic studies have been performed to probe the link between caffeine and arrhythmia, with mixed results. An epidemiologic survey of 7311 healthy men aged 37-57 years who underwent 2-minu ...
Contemporary Pacemakers - CCM, University of Pittsburgh
... SPECIFIC INDICATIONS FOR USE SINUS NODE DISEASE Sinus node disease is currently the most common reason for pacemaker implantation. Electrocardiographic features include sinus bradycardia, sinoatrial block, sinus arrest, or alternating periods of atrial tachycardia (eg, atrial flutter or atrial fibri ...
... SPECIFIC INDICATIONS FOR USE SINUS NODE DISEASE Sinus node disease is currently the most common reason for pacemaker implantation. Electrocardiographic features include sinus bradycardia, sinoatrial block, sinus arrest, or alternating periods of atrial tachycardia (eg, atrial flutter or atrial fibri ...
Canadian Cardiovascular Society Consensus Conference
... and general practitioners (9,10). The majority of patients with heart failure in Canada are treated by PCPs (11). This can be advantageous because PCPs are familiar with a patient’s previous health and expectations, but may be challenging because many heart failure patients have several comorbiditie ...
... and general practitioners (9,10). The majority of patients with heart failure in Canada are treated by PCPs (11). This can be advantageous because PCPs are familiar with a patient’s previous health and expectations, but may be challenging because many heart failure patients have several comorbiditie ...
Gated blood pool SPECT improves reproducibility of right and left
... synchrony. However, FPA reproducibility using gated blood pool SPECT (GBPS) has not been fully evaluated. The present study evaluates whether by using GBPS, the reproducibility of FPA could be improved over that in planar radionuclide angiography (PRNA). Methods: Forty-three subjects underwent both ...
... synchrony. However, FPA reproducibility using gated blood pool SPECT (GBPS) has not been fully evaluated. The present study evaluates whether by using GBPS, the reproducibility of FPA could be improved over that in planar radionuclide angiography (PRNA). Methods: Forty-three subjects underwent both ...
Aldosterone Synthase Promoter Polymorphism Predicts Outcome in
... lower LVEF at 6 months. This was particularly significant for the subset on placebo and was not evident for subjects randomized to I/H. Of note, the impact of the C allele was also more pronounced for subjects on aldosterone receptor antagonists. Aldosterone receptor antagonists were not randomized ...
... lower LVEF at 6 months. This was particularly significant for the subset on placebo and was not evident for subjects randomized to I/H. Of note, the impact of the C allele was also more pronounced for subjects on aldosterone receptor antagonists. Aldosterone receptor antagonists were not randomized ...
Atrial Fibrillation Detection
... caused by chaotic atrial depolarization waves penetrating the AV node in an irregular manner. We can not see any consistent P wave due to chaotic atrial activity, replaced by a fibrillatory wave, caused by random reentry wavelets. These features enable automatic diagnosis of AF. This novel continuou ...
... caused by chaotic atrial depolarization waves penetrating the AV node in an irregular manner. We can not see any consistent P wave due to chaotic atrial activity, replaced by a fibrillatory wave, caused by random reentry wavelets. These features enable automatic diagnosis of AF. This novel continuou ...
Doppler echocardiographic evaluation of right and left
... during this time is the closure of the patent ductus arteriosus, which would represent an increase in left ventricular afterload and a decrease in left ventricular preload. One might hypothesize that the decrease in peak E/A ratio and E/A area ratio we observed was related to closure of the patent d ...
... during this time is the closure of the patent ductus arteriosus, which would represent an increase in left ventricular afterload and a decrease in left ventricular preload. One might hypothesize that the decrease in peak E/A ratio and E/A area ratio we observed was related to closure of the patent d ...
The prevalence, incidence, management and risks of atrial
... [6] and coronary heart disease [7] in the past two decades, the latter diseases have become the major cause of atrial fibrillation. Atrial fibrillation is one of the major causes of embolic stroke, and is associated with higher risks of cardiovascular events and mortality [8, 9]. Some atrial fibrill ...
... [6] and coronary heart disease [7] in the past two decades, the latter diseases have become the major cause of atrial fibrillation. Atrial fibrillation is one of the major causes of embolic stroke, and is associated with higher risks of cardiovascular events and mortality [8, 9]. Some atrial fibrill ...
Interpretation of the Electronic Fetal Heart Rate During Labor
... Nonreassuring patterns such as fetal tachycardia, bradycardia and late decelerations with good shortshort-term variability require intervention to rule out fetal acidosis. Ominous patterns require emergency intrauterine fetal resuscitation and immediate delivery. Differentiating between a reassuring ...
... Nonreassuring patterns such as fetal tachycardia, bradycardia and late decelerations with good shortshort-term variability require intervention to rule out fetal acidosis. Ominous patterns require emergency intrauterine fetal resuscitation and immediate delivery. Differentiating between a reassuring ...
Scientech 2138A AT Manual
... This spreads through out the right and left atrium, their wall tissues and results into contraction of atria. Now the waveform reaches to the A.V. node through special nerve fibers which provide the delay in propagation so as to have proper timing between the pumping action of atrium and ventricles. ...
... This spreads through out the right and left atrium, their wall tissues and results into contraction of atria. Now the waveform reaches to the A.V. node through special nerve fibers which provide the delay in propagation so as to have proper timing between the pumping action of atrium and ventricles. ...
Myocardial hypertrophy and its role in heart failure with preserved
... impaired longitudinal strain in HFpEF patients was not correlated to other markers of diastolic dysfunction, but associated with N-terminal prohormones of brain natriuretic peptide, which was interpreted as a sign of systolic dysfunction, despite preserved EF (60). However, others found a reduction ...
... impaired longitudinal strain in HFpEF patients was not correlated to other markers of diastolic dysfunction, but associated with N-terminal prohormones of brain natriuretic peptide, which was interpreted as a sign of systolic dysfunction, despite preserved EF (60). However, others found a reduction ...
PRELIMINARY VERSION Drug-Induced T-Wave Morphology Changes
... However, there have been an increasing number of reports of inconsistencies about whether the Tpe interval can be used to predict arrhythmia. It also remains controversial what the Tpe measurements actually represents. However, it is important to quantify how the Tpe interval is correlated with the ...
... However, there have been an increasing number of reports of inconsistencies about whether the Tpe interval can be used to predict arrhythmia. It also remains controversial what the Tpe measurements actually represents. However, it is important to quantify how the Tpe interval is correlated with the ...
A Matter of the Heart: The African Clawed Frog Xenopus as a Model
... have several benefits (reviewed in [13–15]) that include tissue-specific loss-of-function studies with dose-response effects. MOs can target multiple gene products allowing examination of functional gene redundancy. Additionally, multiple knockdowns by combinational MO injections combined with corre ...
... have several benefits (reviewed in [13–15]) that include tissue-specific loss-of-function studies with dose-response effects. MOs can target multiple gene products allowing examination of functional gene redundancy. Additionally, multiple knockdowns by combinational MO injections combined with corre ...
Ventricular tachycardia mapping and ablation in arrhythmogenic
... development of ventricular arrhythmias has become increasingly clear over the last 2 decades, our understanding of the arrhythmia mechanisms, underlying electrophysiologic substrate, and treatment strategies were significantly limited. Prospective studies performed in the electrophysiology laborator ...
... development of ventricular arrhythmias has become increasingly clear over the last 2 decades, our understanding of the arrhythmia mechanisms, underlying electrophysiologic substrate, and treatment strategies were significantly limited. Prospective studies performed in the electrophysiology laborator ...
Pathophysiology and current therapy of congestive heart failure
... may be deleterious in some patients with congestive cardiomyopathy. Tachycardia in and of itself not only increases myocardial oxygen demand, but also, by reducing diastolic time, can reduce coronary blood flow to the myocardium and contribute to an imbalance between supply and demand. Although some ...
... may be deleterious in some patients with congestive cardiomyopathy. Tachycardia in and of itself not only increases myocardial oxygen demand, but also, by reducing diastolic time, can reduce coronary blood flow to the myocardium and contribute to an imbalance between supply and demand. Although some ...
General Questions about AEDs 1. What does AED stand for? AED
... AEDs are important because they strengthen the Chain of Survival. They can restore a normal heart rhythm in victims of sudden cardiac arrest. New, portable AEDs enable more people to respond to a medical emergency that requires defibrillation. When a person suffers a sudden cardiac arrest, their ...
... AEDs are important because they strengthen the Chain of Survival. They can restore a normal heart rhythm in victims of sudden cardiac arrest. New, portable AEDs enable more people to respond to a medical emergency that requires defibrillation. When a person suffers a sudden cardiac arrest, their ...
How to Use An AED - Palm Beach State College
... 3. Lock your elbows. 4. Aim for the middle of the chest (on the sternum between the nipples). 5. Push as hard and as fast as you can (try for 100 compressions/minute). 6. Take turns with another person when tired. If two rescuers are available, switch every 200 compressions (~ two minutes) – reduces ...
... 3. Lock your elbows. 4. Aim for the middle of the chest (on the sternum between the nipples). 5. Push as hard and as fast as you can (try for 100 compressions/minute). 6. Take turns with another person when tired. If two rescuers are available, switch every 200 compressions (~ two minutes) – reduces ...
LQTS mutation N1325S in cardiac sodium channel gene SCN5A
... (Fig. 1 bottom panels, and Table 1). Left ventricular fractional shortening (LVFS) was significantly less in TG-NS mice than in NT mice: values of LVFS in TG-NSL12, TG-NSL3, and NT mice were 24.85 ± 5.64, 42.78 ± 1.95, and 60.0 ± 5.7%, respectively (P < 0.005 and P < 0.05 for TG lines 12 and 3 vs. NT ...
... (Fig. 1 bottom panels, and Table 1). Left ventricular fractional shortening (LVFS) was significantly less in TG-NS mice than in NT mice: values of LVFS in TG-NSL12, TG-NSL3, and NT mice were 24.85 ± 5.64, 42.78 ± 1.95, and 60.0 ± 5.7%, respectively (P < 0.005 and P < 0.05 for TG lines 12 and 3 vs. NT ...
Left Ventricular Hypertrophy in Obese Hypertensives: Is It Really
... and left atrial hypertrophy with the BMI values was considerably better in the group of moderate than in the group of mild hypertension. The r values were 0.62 vs. 0.22 for left ventricular mass and 0.64 vs. 0.26 for left atrial dimension. The group of patients with severe hypertension was character ...
... and left atrial hypertrophy with the BMI values was considerably better in the group of moderate than in the group of mild hypertension. The r values were 0.62 vs. 0.22 for left ventricular mass and 0.64 vs. 0.26 for left atrial dimension. The group of patients with severe hypertension was character ...
Electrical Cardioversion
... The immediate success rate of cardioversion (patients in NSR at time of discharge from the hospital) was 92% for those in the sotalol group, 81% in the amiodarone group, and 74% in the no-antiarrhythmic group. Unfortunately, the effects of the cardioversion did not last. Six weeks after DCC only 53% ...
... The immediate success rate of cardioversion (patients in NSR at time of discharge from the hospital) was 92% for those in the sotalol group, 81% in the amiodarone group, and 74% in the no-antiarrhythmic group. Unfortunately, the effects of the cardioversion did not last. Six weeks after DCC only 53% ...
Redefining the Blanking Period After Catheter Ablation for
... was also significantly lower in patients with ER (at any time during the blanking period) compared with those without ER (Figure II in the Data Supplement). Of the 179 patients with ER, the timing of the latest ER was during the first month post ablation in 53 patients, during the second month in 44 ...
... was also significantly lower in patients with ER (at any time during the blanking period) compared with those without ER (Figure II in the Data Supplement). Of the 179 patients with ER, the timing of the latest ER was during the first month post ablation in 53 patients, during the second month in 44 ...
Molecular Mechanisms of Myocardial Remodeling
... Early ventricular remodeling following coronary occlusion is dominated by infarct expansion, which is an acute dilation of the infarction area that cannot be explained by additional myocardial necrosis. Infarct expansion is caused by death and slippage of the myocytes; it usually predominates in the ...
... Early ventricular remodeling following coronary occlusion is dominated by infarct expansion, which is an acute dilation of the infarction area that cannot be explained by additional myocardial necrosis. Infarct expansion is caused by death and slippage of the myocytes; it usually predominates in the ...
Average T-wave alternans activity in ambulatory ECG records
... as death from cardiac causes, but excluding such vascular causes as pulmonary embolism, aortic aneurysm dissection/ aneurysm, or stroke. Sudden cardiac death was defined as (1) a witnessed death occurring within 60 minutes from the onset of new symptoms unless a cause other than cardiac failure was ...
... as death from cardiac causes, but excluding such vascular causes as pulmonary embolism, aortic aneurysm dissection/ aneurysm, or stroke. Sudden cardiac death was defined as (1) a witnessed death occurring within 60 minutes from the onset of new symptoms unless a cause other than cardiac failure was ...
Sudden Cardiac Death
... had a relative risk of sudden death that was 74.1 in the period during and 30 minutes after exertion. In comparison, men who exercise at least five times per week had a relative risk of 10.9, which was much lower. However, this risk was still significantly higher than during periods of lighter exert ...
... had a relative risk of sudden death that was 74.1 in the period during and 30 minutes after exertion. In comparison, men who exercise at least five times per week had a relative risk of 10.9, which was much lower. However, this risk was still significantly higher than during periods of lighter exert ...
Effect of 2,3,7,8-Tetrachlorodibenzo-p
... that was staining positive for the proliferation markers and thus, we report the cardiac proliferative index for all cardiac cells or cardiocytes on the section. Real-Time PCR. To quantify the expression of cardiac hypertrophy markers, total RNA was isolated from neonatal hearts on P 21 using Trizol ...
... that was staining positive for the proliferation markers and thus, we report the cardiac proliferative index for all cardiac cells or cardiocytes on the section. Real-Time PCR. To quantify the expression of cardiac hypertrophy markers, total RNA was isolated from neonatal hearts on P 21 using Trizol ...