Conduction Defects
... an increase in its duration. On the other hand, some normal subjects, with no evidence of heart disease, do have a small notch at the peak of the P-wave, which is probably related to the normal asynchronism of activation between both atria. The question remains whether or not by itself notching of t ...
... an increase in its duration. On the other hand, some normal subjects, with no evidence of heart disease, do have a small notch at the peak of the P-wave, which is probably related to the normal asynchronism of activation between both atria. The question remains whether or not by itself notching of t ...
Transvenous Temporary Cardiac Pacing
... heart block, who have increased propensity to develop TdP unassociated with QT prolonging drugs.16 Thus, in patients presenting with acquired complete heart block and low heart rate, even when hemodynamically stable or oligosymptomatic, it may be prudent to use prophylactic transvenous TCP in all of ...
... heart block, who have increased propensity to develop TdP unassociated with QT prolonging drugs.16 Thus, in patients presenting with acquired complete heart block and low heart rate, even when hemodynamically stable or oligosymptomatic, it may be prudent to use prophylactic transvenous TCP in all of ...
The Role of the Frank–Starling Law in the Transduction of Cellular
... integrated a wide range of experimental data into a common and consistent modelling framework representing the cardiac electrical and mechanical systems. We have used this model to investigate how feedback loops regulate heart contraction. These results show that feedback from muscle length on tensi ...
... integrated a wide range of experimental data into a common and consistent modelling framework representing the cardiac electrical and mechanical systems. We have used this model to investigate how feedback loops regulate heart contraction. These results show that feedback from muscle length on tensi ...
SessionProgramme 14 April - Scientific Events
... P Agostoni (Milan, IT)(OK) - I Pina (Bronx, US)(OK) ...
... P Agostoni (Milan, IT)(OK) - I Pina (Bronx, US)(OK) ...
Cardiac Effects of Cupping: Myocardial Infarction, Arrhythmias, Heart
... Ischemia-induced ventricular arrhythmias were determined in accordance with the Lambeth conventions (16): ventricular ectopic beat (VEB) as a discrete and identifiable premature QRS complex (premature with respect to the P wave), ventricular tachycardia (VT) as a run of four or more VEB at a rate fa ...
... Ischemia-induced ventricular arrhythmias were determined in accordance with the Lambeth conventions (16): ventricular ectopic beat (VEB) as a discrete and identifiable premature QRS complex (premature with respect to the P wave), ventricular tachycardia (VT) as a run of four or more VEB at a rate fa ...
Heart rate variability - European Society of Cardiology
... Other commonly used statistical variables calculated from segments of the total monitoring period include SDANN, the standard deviation of the average NN interval calculated over short periods, usually 5 min, which is an estimate of the changes in heart rate due to cycles longer than 5 min, and the ...
... Other commonly used statistical variables calculated from segments of the total monitoring period include SDANN, the standard deviation of the average NN interval calculated over short periods, usually 5 min, which is an estimate of the changes in heart rate due to cycles longer than 5 min, and the ...
TITLE The effect of caffeine on heart rate OBJECTIVES To
... Caffeine is now a common ingredient of soft drinks such as cola, originally prepared from kola nuts. Research which was carried out shows that soft drinks typically contain about 10 to 15 milligrams of caffeine per serving. Besides, chocolate bars have a high percentage of caffeine content especial ...
... Caffeine is now a common ingredient of soft drinks such as cola, originally prepared from kola nuts. Research which was carried out shows that soft drinks typically contain about 10 to 15 milligrams of caffeine per serving. Besides, chocolate bars have a high percentage of caffeine content especial ...
a finite element model of the human left ventricular systole, taking
... The SPOT method (fibre Strand Peel-Off Technique) was applied to obtain a representative fibre architecture of the human heart. The data contained the coordinates of several thousand myocardial fibres, whereby each fibre, in turn, was represented by a number of points. The fibre orientation in the m ...
... The SPOT method (fibre Strand Peel-Off Technique) was applied to obtain a representative fibre architecture of the human heart. The data contained the coordinates of several thousand myocardial fibres, whereby each fibre, in turn, was represented by a number of points. The fibre orientation in the m ...
Right Bundle Branch Block
... ventricles that pump arterial blood. The pulmonary circulation cycle can be described as follows. Oxygen-depleted blood (as a result of tissue respiration) enters the right atrium via the superior and inferior vena cava. This blood enters the right ventricle and then is pumped into the pulmonary art ...
... ventricles that pump arterial blood. The pulmonary circulation cycle can be described as follows. Oxygen-depleted blood (as a result of tissue respiration) enters the right atrium via the superior and inferior vena cava. This blood enters the right ventricle and then is pumped into the pulmonary art ...
Cardiac sympathetic afferent stimulation impairs - AJP
... Effects of epicardial application of capsaicin on arterial baroreflex function. Table 1 shows the effects of epicardial application of capsaicin on MAP, HR, RSNA, and several baroreflex curve parameters. Although there were no significant differences in HR, MAP and RSNA were significantly higher dur ...
... Effects of epicardial application of capsaicin on arterial baroreflex function. Table 1 shows the effects of epicardial application of capsaicin on MAP, HR, RSNA, and several baroreflex curve parameters. Although there were no significant differences in HR, MAP and RSNA were significantly higher dur ...
Situs Inversus Totalis- A Case Report Abstract Introduction Case
... Situs Inversus Totalis is a rare congenital recessively inherited condition in which there occurs transposition of all viscera with right sided heart (dextrocardia) in a mirror image form. The term Situs Inversus is of Latin origin meaning inverted position of the internal organs. Generally individu ...
... Situs Inversus Totalis is a rare congenital recessively inherited condition in which there occurs transposition of all viscera with right sided heart (dextrocardia) in a mirror image form. The term Situs Inversus is of Latin origin meaning inverted position of the internal organs. Generally individu ...
Impact of ejection on magnitude and time course of ventricular
... mainly on how loading conditions influence peak contractile strength with less attention given to understanding how load impacts on the dynamics of contraction under the same conditions. Several studies have also indicated that there are differences in features of the contraction time course between ...
... mainly on how loading conditions influence peak contractile strength with less attention given to understanding how load impacts on the dynamics of contraction under the same conditions. Several studies have also indicated that there are differences in features of the contraction time course between ...
I IIa IIb III - Heart Rhythm Society
... associated with bradycardia with symptoms (including heart failure) or ventricular arrhythmias presumed to be due to AV block. Permanent pacemaker implantation is indicated for third-degree and advanced second-degree AV block at any anatomic level associated with arrhythmias and other medical condit ...
... associated with bradycardia with symptoms (including heart failure) or ventricular arrhythmias presumed to be due to AV block. Permanent pacemaker implantation is indicated for third-degree and advanced second-degree AV block at any anatomic level associated with arrhythmias and other medical condit ...
Lead aVR: The Neglected Lead - The Association of Physicians of
... more localized information than the bipolar leads I, II and III could offer. For this purpose from the existing limb electrodes, new leads aVR, aVF and aVL were constructed, being unipolar leads looking at the right, left and lower part of the heart with the reference electrode constructed from the ...
... more localized information than the bipolar leads I, II and III could offer. For this purpose from the existing limb electrodes, new leads aVR, aVF and aVL were constructed, being unipolar leads looking at the right, left and lower part of the heart with the reference electrode constructed from the ...
Implantable cardioverter defibrillators (ICDs)
... The heart is a pump that is driven by a series of electrical impulses produced by a bunch of special cells in the right atrium, called the sinus node. (The right atrium is one of the four chambers of the heart. See the illustration on the next page.) The sinus node is sometimes called the heart’s ‘n ...
... The heart is a pump that is driven by a series of electrical impulses produced by a bunch of special cells in the right atrium, called the sinus node. (The right atrium is one of the four chambers of the heart. See the illustration on the next page.) The sinus node is sometimes called the heart’s ‘n ...
Repolarization Changes Underlying Long
... Background—Cardiac memory refers to the observation that altered cardiac electrical activation results in repolarization changes that persist after the restoration of a normal activation pattern. Animal studies, however, have yielded disparate conclusions, both regarding the spatial pattern of repol ...
... Background—Cardiac memory refers to the observation that altered cardiac electrical activation results in repolarization changes that persist after the restoration of a normal activation pattern. Animal studies, however, have yielded disparate conclusions, both regarding the spatial pattern of repol ...
The Hand1 and Hand2 transcription factors regulate
... Studies in chick and zebrafish embryos have also revealed potential functions of Hand genes in cardiac development. Exposure of chick embryos to antisense oligonucleotides for Hand1 and Hand2 together, but not separately, perturbs heart development at the looping stage, suggesting that these factors ...
... Studies in chick and zebrafish embryos have also revealed potential functions of Hand genes in cardiac development. Exposure of chick embryos to antisense oligonucleotides for Hand1 and Hand2 together, but not separately, perturbs heart development at the looping stage, suggesting that these factors ...
acc/aha/esc practice guidelines—executive
... node, the level of vagal and sympathetic tone, and the action of drugs (2). Regular RR intervals are possible in the presence of AV block or interference by ventricular or junctional tachycardia. A rapid, irregular, sustained, wideQRS-complex tachycardia strongly suggests AF with conduction over an ...
... node, the level of vagal and sympathetic tone, and the action of drugs (2). Regular RR intervals are possible in the presence of AV block or interference by ventricular or junctional tachycardia. A rapid, irregular, sustained, wideQRS-complex tachycardia strongly suggests AF with conduction over an ...
Atrial Remodeling and Atrial Fibrillation
... Atrial Remodeling and Reentry Figure 3 illustrates the fundamental determinants of reentry and the effects of atrial remodeling. Figure 3A shows the initiation of reentry in a schematic circuit. An ectopic beat encounters refractory tissue when propagating in one direction, while able to conduct in ...
... Atrial Remodeling and Reentry Figure 3 illustrates the fundamental determinants of reentry and the effects of atrial remodeling. Figure 3A shows the initiation of reentry in a schematic circuit. An ectopic beat encounters refractory tissue when propagating in one direction, while able to conduct in ...
Sudden Cardiac Death in the Young
... acquired cardiomyopathies and arrhythmia syndromes (channelopathies), structural congenital heart diseases, myocarditis, and coronary abnormalities. In any given patient, these underlying diagnoses may be known, or they may be undiagnosed and presymptomatic. The proportion of detected versus undetec ...
... acquired cardiomyopathies and arrhythmia syndromes (channelopathies), structural congenital heart diseases, myocarditis, and coronary abnormalities. In any given patient, these underlying diagnoses may be known, or they may be undiagnosed and presymptomatic. The proportion of detected versus undetec ...
Living with a Pacemaker
... means the heart rate is too slow or irregular to meet the demands of the body during normal daily living activities or exercise. Symptoms of bradycardia may include dizziness, extreme fatigue, shortness of breath, or fainting spells. Bradycardia often occurs because of a heart rhythm disturbance. Th ...
... means the heart rate is too slow or irregular to meet the demands of the body during normal daily living activities or exercise. Symptoms of bradycardia may include dizziness, extreme fatigue, shortness of breath, or fainting spells. Bradycardia often occurs because of a heart rhythm disturbance. Th ...
Maintaining Contact for Effective Mapping and Ablation
... may still be prone to lateral sliding throughout the cardiac cycle.1,8 The combination of all the aforementioned innovations along with the use of ICE may help identify and limit the degree of sliding. However, when this is not possible because of excess cardiac or respiratory motion, energy should ...
... may still be prone to lateral sliding throughout the cardiac cycle.1,8 The combination of all the aforementioned innovations along with the use of ICE may help identify and limit the degree of sliding. However, when this is not possible because of excess cardiac or respiratory motion, energy should ...
Early repolarization in the inferolateral leads of the
... pointed to an associated locus in KCND3 (Kv4.3) gene, which encodes a subunit of the Ito channel, but the association did not reach genome-wide significance and could not be replicated in all study populations. In conclusion, the results of these studies demonstrated that the ER ECG pattern with hor ...
... pointed to an associated locus in KCND3 (Kv4.3) gene, which encodes a subunit of the Ito channel, but the association did not reach genome-wide significance and could not be replicated in all study populations. In conclusion, the results of these studies demonstrated that the ER ECG pattern with hor ...
Assessment of Heart Rates and Blood Pressure in
... rate4). Therefore meditation can be used as a therapy for patients who have heart problems such as hypertension or problems with their musculoskeletal system5). Heart rate (HR) is an indicator of cardiac function and a parameter of the heart’s performance. It can be observed non-invasively using an ...
... rate4). Therefore meditation can be used as a therapy for patients who have heart problems such as hypertension or problems with their musculoskeletal system5). Heart rate (HR) is an indicator of cardiac function and a parameter of the heart’s performance. It can be observed non-invasively using an ...
The impact of age on cardiac excitation
... heart, even in the absence of overt cardiovascular disease.1 Left ventricular wall thickness increases with age in the human heart.1 This occurs even though the total number of viable ventricular myocytes actually declines with age because the remaining cells hypertrophy.1,2 Increased accumulation o ...
... heart, even in the absence of overt cardiovascular disease.1 Left ventricular wall thickness increases with age in the human heart.1 This occurs even though the total number of viable ventricular myocytes actually declines with age because the remaining cells hypertrophy.1,2 Increased accumulation o ...