Full Article (PDF file)
... GERD, it may present with a wide spectrum of manifestations mimicking those of cardiovascular pathology such as postprandial syncope, angina-like chest pain, recurrent dyspnea and acute heart failure due to HH induced cardiac compression [11-13]. Further, HH may simulate the appearance of an intra-a ...
... GERD, it may present with a wide spectrum of manifestations mimicking those of cardiovascular pathology such as postprandial syncope, angina-like chest pain, recurrent dyspnea and acute heart failure due to HH induced cardiac compression [11-13]. Further, HH may simulate the appearance of an intra-a ...
Sudden Cardiac Death Thirty Years Ago and at Present. The Role of
... as standards to evaluate results of their experiments. The first group comprised dogs with preserved sympathetic innervation of the heart (Group S). The other group was made up by dogs with bilateral extirpation of the upper thoracic sympathetic ganglia 2 months before the actual experiment (Group D ...
... as standards to evaluate results of their experiments. The first group comprised dogs with preserved sympathetic innervation of the heart (Group S). The other group was made up by dogs with bilateral extirpation of the upper thoracic sympathetic ganglia 2 months before the actual experiment (Group D ...
2nd Announcement - Istituto di Medicina e Scienza dello Sport
... recognize the «Cardiostim style» by the principles that made it a success: a strong presence outside the EU, especially North Americans, a large emphasis placed on innovation and education, a forum for industry. You will find just as much of the scientific and academic EHRA hand, and all activities ...
... recognize the «Cardiostim style» by the principles that made it a success: a strong presence outside the EU, especially North Americans, a large emphasis placed on innovation and education, a forum for industry. You will find just as much of the scientific and academic EHRA hand, and all activities ...
Print - Circulation Research
... to overcome both these limitations by allowing noninvasive characterization of cardiac tissue structure.25,26 In this technique, a tensor that represents the 3D diffusion of water in each image voxel is estimated. The primary eigenvector of this tensor points in the direction in which the rate of di ...
... to overcome both these limitations by allowing noninvasive characterization of cardiac tissue structure.25,26 In this technique, a tensor that represents the 3D diffusion of water in each image voxel is estimated. The primary eigenvector of this tensor points in the direction in which the rate of di ...
2011 Supraventricular tachycardia causing heart failure
... of ages, from in-utero to the elderly, and is generally thought to take months of a fairly persistent arrhythmia to develop [14,15]. The type of arrhythmias causing TIC varies with the age of the patient, with certain forms of PSVT being more common in younger patients and atrial fibrillation and fl ...
... of ages, from in-utero to the elderly, and is generally thought to take months of a fairly persistent arrhythmia to develop [14,15]. The type of arrhythmias causing TIC varies with the age of the patient, with certain forms of PSVT being more common in younger patients and atrial fibrillation and fl ...
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 ...
A Meta-Analysis Of Quadripolar Versus Bipolar Left
... compared with BL placement. Our data supports and extends the current notion that optimal lead implantation using QL is easier than BL. A significantly lower fluoroscopy and procedure time was noted with QL when compared with BL with a mean difference -5.21 minutes and -10.33 minutes respectively. T ...
... compared with BL placement. Our data supports and extends the current notion that optimal lead implantation using QL is easier than BL. A significantly lower fluoroscopy and procedure time was noted with QL when compared with BL with a mean difference -5.21 minutes and -10.33 minutes respectively. T ...
Staphylococcus epi
... magnet over the pacer Often a very poorly understood concept by the non-cardiologist Does not inactivate the pacer as is commonly believed Activate a lead switch present in the pacemaker which converts the pacer to a asynchronous or fixed-rate pacing mode Inhibits the sensing function of a p ...
... magnet over the pacer Often a very poorly understood concept by the non-cardiologist Does not inactivate the pacer as is commonly believed Activate a lead switch present in the pacemaker which converts the pacer to a asynchronous or fixed-rate pacing mode Inhibits the sensing function of a p ...
Formation of the Ventricles
... Knockout studies in mice have shown that several cardiac transcription factors are essential for appropriate looping morphogenesis and their loss of function tends also to be characterized by a single, common, hypoplastic ventricular chamber. In mouse embryos lacking the early cardiac homeobox gene ...
... Knockout studies in mice have shown that several cardiac transcription factors are essential for appropriate looping morphogenesis and their loss of function tends also to be characterized by a single, common, hypoplastic ventricular chamber. In mouse embryos lacking the early cardiac homeobox gene ...
The Effect of Right Ventricular Filling on the Pressure
... the amount of air above the left ventricular volumetric cylinder. Loops were recorded after a steady state had been achieved (approximately 2-3 minutes). Data were accepted for analysis if the pressure at any time in the initial pressure-volume loop did not differ by more than 5% from pressures obta ...
... the amount of air above the left ventricular volumetric cylinder. Loops were recorded after a steady state had been achieved (approximately 2-3 minutes). Data were accepted for analysis if the pressure at any time in the initial pressure-volume loop did not differ by more than 5% from pressures obta ...
Upstream therapeutic strategies of Valsartan and Fluvastatin on
... Clinical follow-up using standardized questionnaires will be performed every 3 months during the 2 years follow-up period from the assignment of each patient. The dosages and types of all other anti-hypertensive, anti-hyperlipidemia, and anti-arrhythmic drugs used during the follow-up will be record ...
... Clinical follow-up using standardized questionnaires will be performed every 3 months during the 2 years follow-up period from the assignment of each patient. The dosages and types of all other anti-hypertensive, anti-hyperlipidemia, and anti-arrhythmic drugs used during the follow-up will be record ...
Clarkson University
... is the primary means of stopping an SCD, or giving therapy, however it is still difficult to clearly identify those patients who are to have a cardiac arrest. (5)(6) Furthermore the defibrillators used in the current research at Clarkson do not incorporate any sort of TWA algorithms or use TWA as a ...
... is the primary means of stopping an SCD, or giving therapy, however it is still difficult to clearly identify those patients who are to have a cardiac arrest. (5)(6) Furthermore the defibrillators used in the current research at Clarkson do not incorporate any sort of TWA algorithms or use TWA as a ...
Measurement of Left Ventricular Wall Thickness and
... Echocardiographic measurements of minor axis and wall thickness and calculations from these two measurements of left ventricular end-diastolic volume and mass were performed in 24 patients and compared with angiocardiographic measurements of the same variables in corresponding patients. The echo-mea ...
... Echocardiographic measurements of minor axis and wall thickness and calculations from these two measurements of left ventricular end-diastolic volume and mass were performed in 24 patients and compared with angiocardiographic measurements of the same variables in corresponding patients. The echo-mea ...
ACLS Rhythms for the ACLS Algorithms
... A — Normal impulse comes down Purkinje fibers to join muscle fibers. B — One impulse (B1) encounters an area of one-way (unidirectional) block (B2) and stops. C — Meanwhile, the normally conducted impulse (C1) has moved down the Purkinje fiber, into the muscle fiber (C2); and as a retrograde impulse ...
... A — Normal impulse comes down Purkinje fibers to join muscle fibers. B — One impulse (B1) encounters an area of one-way (unidirectional) block (B2) and stops. C — Meanwhile, the normally conducted impulse (C1) has moved down the Purkinje fiber, into the muscle fiber (C2); and as a retrograde impulse ...
Influences of Physical Training on the Heart of Dogs
... Received February 4, 1974. Accepted for publication August 27, 1974. Circulation Research, VoL 35, December 197i ...
... Received February 4, 1974. Accepted for publication August 27, 1974. Circulation Research, VoL 35, December 197i ...
Overview of implantable cardioverter defibrillator
... fraction of ≤ 35%; and NYHA Class II or III status, with good functional capacity or life expectancy of more than one year (for patients with ischaemic LV dysfunction, the index acute myocardial infarction should be 40 days or longer). European guidelines further recommend that patients should be on ...
... fraction of ≤ 35%; and NYHA Class II or III status, with good functional capacity or life expectancy of more than one year (for patients with ischaemic LV dysfunction, the index acute myocardial infarction should be 40 days or longer). European guidelines further recommend that patients should be on ...
Atrial fibrillation – etiology and pathogenesis
... in easier and more stable induction of arrhythmia. Electrical remodeling in sustained AF impairs atrial contractility, which is an important clinical fact when returning to sinus rhythm. The disease lasting over weeks/months leads to structural remodeling (15). In structural remodeling, the presence ...
... in easier and more stable induction of arrhythmia. Electrical remodeling in sustained AF impairs atrial contractility, which is an important clinical fact when returning to sinus rhythm. The disease lasting over weeks/months leads to structural remodeling (15). In structural remodeling, the presence ...
Distribution of normal human left ventricular myofiber stress at end
... Laboratory of Cardiac Energetics, Bethesda, MD) (44, 45). Throughplane motion was accounted for by including both the short-axis and long-axis tag lines in the analysis. FE modeling. We used the FE method to calculate the mechanical response of the LV of each subject due to volume and pressure chang ...
... Laboratory of Cardiac Energetics, Bethesda, MD) (44, 45). Throughplane motion was accounted for by including both the short-axis and long-axis tag lines in the analysis. FE modeling. We used the FE method to calculate the mechanical response of the LV of each subject due to volume and pressure chang ...
Similarities and differences between ECG signs of left bundle
... Because it is crucial for this study that the effect of tissue conductivity on action potential propagation and on volume conduction is accurately represented, we used a reaction-diffusion model of the human ventricles coupled to a detailed human torso model. This combination of models has been used ...
... Because it is crucial for this study that the effect of tissue conductivity on action potential propagation and on volume conduction is accurately represented, we used a reaction-diffusion model of the human ventricles coupled to a detailed human torso model. This combination of models has been used ...
Clinical Role of Atrial Arrhythmias in Patients With Arrhythmogenic
... 18 (20%) patients experienced AF-AFl during a median follow-up of 5.8 years (interquartile range 2.0–10.4). KaplanMeier analysis revealed reduced times to AF-AFl among patients with echocardiographic RV fractional area change <27% (P<0.001), left atrial diameter ≥24.4 mm/m2 (parasternal long-axis, P ...
... 18 (20%) patients experienced AF-AFl during a median follow-up of 5.8 years (interquartile range 2.0–10.4). KaplanMeier analysis revealed reduced times to AF-AFl among patients with echocardiographic RV fractional area change <27% (P<0.001), left atrial diameter ≥24.4 mm/m2 (parasternal long-axis, P ...
Assessment of Heart Rate Variabilit in Hypertrophic
... Methods and Results. To determine the clinical significance of HRV and its relation to markers of electrical and hemodynamic instability in 1CM, the 24-hour Holter recordings of 104 patients in sinus rhythm and off medication were analyzed. Five nonspectral measures of HRV were computed. The frequen ...
... Methods and Results. To determine the clinical significance of HRV and its relation to markers of electrical and hemodynamic instability in 1CM, the 24-hour Holter recordings of 104 patients in sinus rhythm and off medication were analyzed. Five nonspectral measures of HRV were computed. The frequen ...
Measurement of Left Ventricular Diameter In the Dog by Cardiac
... oscilloscope to provide a visible echo at a point corresponding to the actual distance traversed by the sound through blood or water. The physical placement of the catheter is similar to that commonly used in diagnostic right heart catheterization and, particularly, in longterm endocardial pacing. S ...
... oscilloscope to provide a visible echo at a point corresponding to the actual distance traversed by the sound through blood or water. The physical placement of the catheter is similar to that commonly used in diagnostic right heart catheterization and, particularly, in longterm endocardial pacing. S ...
Participate in Work
... measured by an AED’s electrocardiogram to determine if a shock is necessary. ...
... measured by an AED’s electrocardiogram to determine if a shock is necessary. ...
Population prevalence, incidence, and predictors of
... there are few large epidemiological studies of its prevalence, incidence, and risk factors. The epidemiological features of AF are described in one of the largest population cohorts ever studied. Methods—The prevalence and incidence of AF were studied in the Renfrew/Paisley population cohort of 15 4 ...
... there are few large epidemiological studies of its prevalence, incidence, and risk factors. The epidemiological features of AF are described in one of the largest population cohorts ever studied. Methods—The prevalence and incidence of AF were studied in the Renfrew/Paisley population cohort of 15 4 ...
Effects of Increasing Left Ventricular Filling Pressure in Patients with
... of blood volume (8) as contributing to inadequate cardiac performance in acute myocardial infarction, several investigators have advocated blood volume expansion in the management of left ventricular power failure (2, 913). Infusion of dextran has been advocated for treating shock and (or) severe he ...
... of blood volume (8) as contributing to inadequate cardiac performance in acute myocardial infarction, several investigators have advocated blood volume expansion in the management of left ventricular power failure (2, 913). Infusion of dextran has been advocated for treating shock and (or) severe he ...
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.