![Response of recurrent sustained ventricular tachycardia to verapamil](http://s1.studyres.com/store/data/003253399_1-f7b547bfdccadd940e6d389e35da65d3-300x300.png)
Response of recurrent sustained ventricular tachycardia to verapamil
... aimaline restored sinus rhythm after progressive slowing of the tachycardia (Fig. 1). Verapamil was the only drug administered in the six subsequent attacks and always terminated the tachycardia within three minutes of injection. Maintenance treatment with oral quinidine sulphate (1200 mg/day) faile ...
... aimaline restored sinus rhythm after progressive slowing of the tachycardia (Fig. 1). Verapamil was the only drug administered in the six subsequent attacks and always terminated the tachycardia within three minutes of injection. Maintenance treatment with oral quinidine sulphate (1200 mg/day) faile ...
Guidelines for Pharmacotherapy of Atrial Fibrillation (JCS 2008)
... while those specified in the Hisayama Study, an epidemiological survey in Hisayama town, Kyushu, Japan include aging, heart diseases (ischemic and valvular diseases), and alcohol consumption. ...
... while those specified in the Hisayama Study, an epidemiological survey in Hisayama town, Kyushu, Japan include aging, heart diseases (ischemic and valvular diseases), and alcohol consumption. ...
THE ACTION OF MAGNESIUM ON THE HEART
... was a progressive increase in the P-R interval as the concentration increased, until A-V block of various grades and widening of QRS appeared. If the concentration was raised sufficiently, cardiac arrest resulted. Except for the initial tachycardia, similar results were obtained in cats. In the auth ...
... was a progressive increase in the P-R interval as the concentration increased, until A-V block of various grades and widening of QRS appeared. If the concentration was raised sufficiently, cardiac arrest resulted. Except for the initial tachycardia, similar results were obtained in cats. In the auth ...
Action of verapamil on sinus node, atrioventricular, and
... the mode of antiarrhythmic action of verapamil. Finally the pacemaker was switched off while continuing ...
... the mode of antiarrhythmic action of verapamil. Finally the pacemaker was switched off while continuing ...
Non-Invasive Transcutaneous Pacing
... With the pacer on, the defibrillator marks intrinsic beats on the R-wave with an arrow on the Efficia DFM100. The intrinsic beats are also marked in the print strip. When an intrinsic beat is detected, the time interval for the next pace pulse starts at the intrinsic beat. If no intrinsic beat is de ...
... With the pacer on, the defibrillator marks intrinsic beats on the R-wave with an arrow on the Efficia DFM100. The intrinsic beats are also marked in the print strip. When an intrinsic beat is detected, the time interval for the next pace pulse starts at the intrinsic beat. If no intrinsic beat is de ...
Prognostic value of Holter monitoring in congestive heart failure
... [10–19]. AF was found to be an independent predictor of mortality in the Framingham study [10]. In heart failure populations of the Vasodilators in Heart Failure Trial (V-HeFT) [11] and the Prospective Randomized Study of Ibopamine on Mortality and Efficacy (PRIME) [12] studies, AF was not identifie ...
... [10–19]. AF was found to be an independent predictor of mortality in the Framingham study [10]. In heart failure populations of the Vasodilators in Heart Failure Trial (V-HeFT) [11] and the Prospective Randomized Study of Ibopamine on Mortality and Efficacy (PRIME) [12] studies, AF was not identifie ...
Review Article Percutaneous device closure of secundum atrial
... untreated ASD diagnosed in childhood is well studied and percutaneous device closure of these ASDs has evolved to become the standard of care in both pediatric and young adult populations. There is a growing body of literature that suggests the benefits of ASD closure are not restricted to younger p ...
... untreated ASD diagnosed in childhood is well studied and percutaneous device closure of these ASDs has evolved to become the standard of care in both pediatric and young adult populations. There is a growing body of literature that suggests the benefits of ASD closure are not restricted to younger p ...
Complications of transcatheter atrial septal defect closure
... effects occurred in 6.6% of patients between 20 and 39 years of age, 7.2% of patients between 40 and 59 years and 10.6% in those older than 60 years. Although increasing age was of course associated with a greater number of comorbidities, this did not entirely account for the relationship between ag ...
... effects occurred in 6.6% of patients between 20 and 39 years of age, 7.2% of patients between 40 and 59 years and 10.6% in those older than 60 years. Although increasing age was of course associated with a greater number of comorbidities, this did not entirely account for the relationship between ag ...
Fetal Arrhythmias: A Clinical Review
... are most common cause of fetal arrhythmias, and are most often premature atrial contractions (PACs), what are usually identified in third trimester fetuses and their frequency may be highly variable. These are usually benign, resolving just before or shortly after birth. The follow-up is necessary, ...
... are most common cause of fetal arrhythmias, and are most often premature atrial contractions (PACs), what are usually identified in third trimester fetuses and their frequency may be highly variable. These are usually benign, resolving just before or shortly after birth. The follow-up is necessary, ...
Electrocardiographic Characteristics and SCN5A Mutations in
... variants in SCN5A (resulting in A226D, L846R, and R367H) in 3 unrelated patients. These variants occur at residues that are highly conserved across mammals. His-ventricular interval was prolonged in all of the patients carrying an SCN5A mutation. Sodium channel blocker challenge resulted in an augme ...
... variants in SCN5A (resulting in A226D, L846R, and R367H) in 3 unrelated patients. These variants occur at residues that are highly conserved across mammals. His-ventricular interval was prolonged in all of the patients carrying an SCN5A mutation. Sodium channel blocker challenge resulted in an augme ...
Electrocardiographic Characteristics and SCN5A Mutations in
... variants in SCN5A (resulting in A226D, L846R, and R367H) in 3 unrelated patients. These variants occur at residues that are highly conserved across mammals. His-ventricular interval was prolonged in all of the patients carrying an SCN5A mutation. Sodium channel blocker challenge resulted in an augme ...
... variants in SCN5A (resulting in A226D, L846R, and R367H) in 3 unrelated patients. These variants occur at residues that are highly conserved across mammals. His-ventricular interval was prolonged in all of the patients carrying an SCN5A mutation. Sodium channel blocker challenge resulted in an augme ...
Regulation of Cardiac Output by Stroke Volume and Heart Rate in
... not have been surprising to find that volume loading increased cardiac output in the conscious dog as a result of increased in both heart rate and stroke volume, as has been observed previously.l0~12 However, we did not expect to find, in the conscious dog, that the maximum tolerable saline infusion ...
... not have been surprising to find that volume loading increased cardiac output in the conscious dog as a result of increased in both heart rate and stroke volume, as has been observed previously.l0~12 However, we did not expect to find, in the conscious dog, that the maximum tolerable saline infusion ...
Rhythm management devices
... stands for DUAL, so this pacemaker, paces both the atrium and the ventricle. The second letter stands for Area SENSED, so this pacemaker senses both the atrium and the ventricle. The third letter stands for what it does, and the D stands for Dual inhibited. This pacemaker can be INHIBITED by: ...
... stands for DUAL, so this pacemaker, paces both the atrium and the ventricle. The second letter stands for Area SENSED, so this pacemaker senses both the atrium and the ventricle. The third letter stands for what it does, and the D stands for Dual inhibited. This pacemaker can be INHIBITED by: ...
an account of a seven year experience with
... Our observation confirms that ischemia is very common in pulmonary edema (37). It has etiologic and therapeutic significance, being also the useful marker of the worse inhospital prognosis (37). Amiodarone may decrease the incidence of sudden cardiac death (presumably arrhythmic) in the congestive h ...
... Our observation confirms that ischemia is very common in pulmonary edema (37). It has etiologic and therapeutic significance, being also the useful marker of the worse inhospital prognosis (37). Amiodarone may decrease the incidence of sudden cardiac death (presumably arrhythmic) in the congestive h ...
Atrial Fibrillation in the Wolff-Parkinson-White Syndrome
... ago, there has been an overwhelming interest and a dramatic increase in AF investigation. AF has a different dimension in the context of the Wolff-Parkinson-White (WPW) syndrome. Indeed, AF may be a nightmare in a young person that has an accessory pathway (AP) with fast anterograde conduction. It m ...
... ago, there has been an overwhelming interest and a dramatic increase in AF investigation. AF has a different dimension in the context of the Wolff-Parkinson-White (WPW) syndrome. Indeed, AF may be a nightmare in a young person that has an accessory pathway (AP) with fast anterograde conduction. It m ...
PDF poster 347KB - University of Oxford
... Figure 3A. Raw-90data trace showing the effect of 20mmol/L SNP on the heart rate response to vagal stimulation at 10Hz in a SHR and WKY rat atrial preparation. Figure 3B. SNP significantly enhanced the response at 10Hz in WKY (n=7) but not SHR (n=6) preparations (p<0.05). SNP significantly increased ...
... Figure 3A. Raw-90data trace showing the effect of 20mmol/L SNP on the heart rate response to vagal stimulation at 10Hz in a SHR and WKY rat atrial preparation. Figure 3B. SNP significantly enhanced the response at 10Hz in WKY (n=7) but not SHR (n=6) preparations (p<0.05). SNP significantly increased ...
Pharmacologic prophylaxis for atrial fibrillation following cardiac
... mortality. Effective treatment for prophylaxis of postoperative AF is vital as reduces hospitalization and overall morbidity. Beta - blockers, have been proved to prevent effectively atrial fibrillation following cardiac surgery and should be routinely used if there are no contraindications. Sotalol ...
... mortality. Effective treatment for prophylaxis of postoperative AF is vital as reduces hospitalization and overall morbidity. Beta - blockers, have been proved to prevent effectively atrial fibrillation following cardiac surgery and should be routinely used if there are no contraindications. Sotalol ...
correspondence course of the
... breathing and heartbeat) has demonstrated that a significant number of casualties can be successfully resuscitated if CPR is provided promptly and followed by more advanced cardiac life support. Prompt response is critical. The American Heart Association reports that the longer CPR is delayed, the l ...
... breathing and heartbeat) has demonstrated that a significant number of casualties can be successfully resuscitated if CPR is provided promptly and followed by more advanced cardiac life support. Prompt response is critical. The American Heart Association reports that the longer CPR is delayed, the l ...
Electroanatomical Mapping Systems and Cardiac Arrhythmias
... the lung, followed by bone marrow and breast [17]. They concluded that the increased risk of malignancy after a single RFA procedure in children is low. Recently Tomà et al. pointed up that proper balance between risks and benefits is crucial for an optimal outcome and that radiation exposure during ...
... the lung, followed by bone marrow and breast [17]. They concluded that the increased risk of malignancy after a single RFA procedure in children is low. Recently Tomà et al. pointed up that proper balance between risks and benefits is crucial for an optimal outcome and that radiation exposure during ...
Diagnosis and Treatment of Sick Sinus Syndrome -
... when they are having symptoms. For this procedure to be successful, the arrhythmia must last for at least one minute. Another approach is to have patients activate a recording device to monitor the events of cardiac dysrhythmias when they are having symptoms.2 There are several other methods of diag ...
... when they are having symptoms. For this procedure to be successful, the arrhythmia must last for at least one minute. Another approach is to have patients activate a recording device to monitor the events of cardiac dysrhythmias when they are having symptoms.2 There are several other methods of diag ...
Fibrosis: a structural modulator of sinoatrial node physiology and
... several extensions into the surrounding atrial myocardium, forming the specialized sinoatrial conduction pathways (SACPs) (Lev, 1954; Hudson, 1960; Demoulin and Kulbertus, 1978; Fedorov et al., 2010b) (Figure 1A). Importantly, the SAN consists of small clusters of pacemaker myocytes, arranged in par ...
... several extensions into the surrounding atrial myocardium, forming the specialized sinoatrial conduction pathways (SACPs) (Lev, 1954; Hudson, 1960; Demoulin and Kulbertus, 1978; Fedorov et al., 2010b) (Figure 1A). Importantly, the SAN consists of small clusters of pacemaker myocytes, arranged in par ...
Not Enough QRS Shortening? Keep Calm and Add Another Lead
... failure, left ventricular (LV) dysfunction and left bundle branch block [1]. However, up to one third of patients do not respond to CRT. In that regard, few initial studies presenting multisite pacing have shown encouraging results [2], demonstrating both feasibility and safety in placing a second C ...
... failure, left ventricular (LV) dysfunction and left bundle branch block [1]. However, up to one third of patients do not respond to CRT. In that regard, few initial studies presenting multisite pacing have shown encouraging results [2], demonstrating both feasibility and safety in placing a second C ...
Inability of Potassium Canrenoate to Convert Experimentally
... The antiarrhythmic effects of potassium canrenoate were examined in 20 closedchest, pentobarbital-anesthetized dogs with ouabain-induced ventricular tachycardia. In a group of 8 dogs, a mean dose of ouabain of 64.4 ± 3.7 /ig/kg induced sustained ventricular tachycardia. Subsequent administration of ...
... The antiarrhythmic effects of potassium canrenoate were examined in 20 closedchest, pentobarbital-anesthetized dogs with ouabain-induced ventricular tachycardia. In a group of 8 dogs, a mean dose of ouabain of 64.4 ± 3.7 /ig/kg induced sustained ventricular tachycardia. Subsequent administration of ...
Correlation of Atrial Natriuretic Peptide and Cyclic
... under exercise than under resting conditions (r = 0.71; fig. 1). These effects could be due to the regulation for atrial natriuretic peptide receptors. Changing or chronically elevated atrial natriuretic peptide concentrations might cause down regulation of the atrial natriuretic peptide receptor nu ...
... under exercise than under resting conditions (r = 0.71; fig. 1). These effects could be due to the regulation for atrial natriuretic peptide receptors. Changing or chronically elevated atrial natriuretic peptide concentrations might cause down regulation of the atrial natriuretic peptide receptor nu ...
Coagulation activity is increased in the left atrium of patients
... antiplatelet drugs or hemorrheologically active agents, such as analgesic agents and estrogen-containing drugs. According to the practice of our cardiac catheterization laboratory, warfarin administration was stopped on the day of valvuloplasty. Nine patients were in New York Heart Association funct ...
... antiplatelet drugs or hemorrheologically active agents, such as analgesic agents and estrogen-containing drugs. According to the practice of our cardiac catheterization laboratory, warfarin administration was stopped on the day of valvuloplasty. Nine patients were in New York Heart Association funct ...
Atrial fibrillation
Atrial fibrillation (AF or A-fib) is an abnormal heart rhythm characterized by rapid and irregular beating. Often it starts as brief periods of abnormal beating which become longer and possibly constant over time. Most episodes have no symptoms. Occasionally there may be heart palpitations, fainting, shortness of breath, or chest pain. The disease increases the risk of heart failure, dementia, and stroke.Hypertension and valvular heart disease are the most common alterable risk factors for AF. Other heart-related risk factors include heart failure, coronary artery disease, cardiomyopathy, and congenital heart disease. In the developing world valvular heart disease often occurs as a result of rheumatic fever. Lung-related risk factors include COPD, obesity, and sleep apnea. Other factors include excess alcohol intake, diabetes mellitus, and thyrotoxicosis. However, half of cases are not associated with one of these risks. A diagnosis is made by feeling the pulse and may be confirmed using an electrocardiogram (ECG). The typical ECG shows no P waves and an irregular ventricular rate.AF is often treated with medications to slow the heart rate to a near normal range (known as rate control) or to convert the rhythm to normal sinus rhythm (known as rhythm control). Electrical cardioversion can also be used to convert AF to a normal sinus rhythm and is often used emergently if the person is unstable. Ablation may prevent recurrence in some people. Depending on the risk of stroke either aspirin or anti-clotting medications such as warfarin or a novel oral anticoagulant may be recommended. While these medications reduce this risk, they increase rates of major bleeding.Atrial fibrillation is the most common serious abnormal heart rhythm. In Europe and North America, as of 2014, it affects about 2% to 3% of the population. This is an increase from 0.4 to 1% of the population around 2005. In the developing world about 0.6% of males and 0.4% of females are affected. The percentage of people with AF increases with age with 0.14% under 50 years old, 4% between 60 and 70 years old, and 14% over 80 years old being affected. A-fib and atrial flutter resulted in 112,000 deaths in 2013, up from 29,000 in 1990. The first known report of an irregular pulse was by John Baptist Senac in 1749. This was first documented by ECG in 1909 by Thomas Lewis.