An MRI Comparison of Quantitative Left Ventricular Structure
... were able to tolerate MR imaging within seven days of the event (with the acknowledgment that this cohort would be clinically more diverse than the others); and (iv) HNV cohort – only those individuals with no medical history of cardiovascular disease of any sort. Each individual was imaged on a 1.5 ...
... were able to tolerate MR imaging within seven days of the event (with the acknowledgment that this cohort would be clinically more diverse than the others); and (iv) HNV cohort – only those individuals with no medical history of cardiovascular disease of any sort. Each individual was imaged on a 1.5 ...
Action of verapamil on sinus node, atrioventricular, and
... intervals considerably decreased when compared to had been pretreated with a beta-blocker and atropine the values measured immediately before atropine seem to indicate that even in humans verapamil has (Fig. 2). Second-degree AV block was present in an intrinsic action not mediated by autonomic thes ...
... intervals considerably decreased when compared to had been pretreated with a beta-blocker and atropine the values measured immediately before atropine seem to indicate that even in humans verapamil has (Fig. 2). Second-degree AV block was present in an intrinsic action not mediated by autonomic thes ...
Sudden cardiac death
... is due to ischemic heart disease in 80% of victims [31,32]. Patients with arrhythmogenic right ventricular dysplasia may also account for a small number of cases of cardiac arrest and sudden death usually in young adults. The ventricular tachycardia that these patients typically present exhibits a l ...
... is due to ischemic heart disease in 80% of victims [31,32]. Patients with arrhythmogenic right ventricular dysplasia may also account for a small number of cases of cardiac arrest and sudden death usually in young adults. The ventricular tachycardia that these patients typically present exhibits a l ...
Circulation: Arrhythmia and Electrophysiology Topic Review
... Summary: Nonsustained ventricular tachycardia (VT) occurs frequently in patients hospitalized with acute coronary syndromes, although the clinical implications of VT remain uncertain, in particular relative to the absolute risk of sudden cardiac death in patients with shorter episodes of ventricular ...
... Summary: Nonsustained ventricular tachycardia (VT) occurs frequently in patients hospitalized with acute coronary syndromes, although the clinical implications of VT remain uncertain, in particular relative to the absolute risk of sudden cardiac death in patients with shorter episodes of ventricular ...
GIANT TRUE CYST OF THE MITRAL VALVE WITH OBSTRUCTION
... after chest trauma [20] or surgery for the heart valves [21]. Typically, these cysts are small and asymptomatic. They can disappear spontaneously in childhood [1], and become large in adulthood and depending on the location, be accompanied by symptoms of valve dysfunction and/or left ventricular out ...
... after chest trauma [20] or surgery for the heart valves [21]. Typically, these cysts are small and asymptomatic. They can disappear spontaneously in childhood [1], and become large in adulthood and depending on the location, be accompanied by symptoms of valve dysfunction and/or left ventricular out ...
Bradycardia and atrial fibrillation in patients with stable CAD treated
... Methods and Results Emergent bradycardia (resting heart rate <50 bpm on 12-lead electrocardiogram) with ivabradine was reported in 3572 patients (37.4%) overall, and in 2242 (37.2%) of patients with Canadian Cardiovascular Society (CCS) class ≥2 angina. There was no difference in outcomes over the c ...
... Methods and Results Emergent bradycardia (resting heart rate <50 bpm on 12-lead electrocardiogram) with ivabradine was reported in 3572 patients (37.4%) overall, and in 2242 (37.2%) of patients with Canadian Cardiovascular Society (CCS) class ≥2 angina. There was no difference in outcomes over the c ...
Intraprocedural left ventricular free wall rupture diagnosed by left
... of intravenous catecholamines to stabilize hemodynamic function during percutaneous coronary interventions. In this case, the insertion of an IABP and the implant of a temporary pacemaker should have been considered before proceeding with angioplasty since, in patients presenting with inferior AMI, ...
... of intravenous catecholamines to stabilize hemodynamic function during percutaneous coronary interventions. In this case, the insertion of an IABP and the implant of a temporary pacemaker should have been considered before proceeding with angioplasty since, in patients presenting with inferior AMI, ...
Association of prolapse of posterior cusp of mitral - Heart
... with prolapse could be a random association of two fairly common abnormalities. However, the authors have performed many left ventricular angiograms in patients with ventricular septal defects and have found the association of a ballooned-posterior cusp to be extremely rare, suggesting that the asso ...
... with prolapse could be a random association of two fairly common abnormalities. However, the authors have performed many left ventricular angiograms in patients with ventricular septal defects and have found the association of a ballooned-posterior cusp to be extremely rare, suggesting that the asso ...
Left ventricular filling in hypertrophic cardiomyopathy - Heart
... filling rate was 770±260 ml s-' (mean 1 standard deviation), not significantly different from nornal. Mitral valve opening was delayed, occurring 140 ± 40 ms after time of minimum cavity area, compared with 93±14 msec in normals (P<0-01), indicating abnormal relaxation. Peak left ventricular filling ...
... filling rate was 770±260 ml s-' (mean 1 standard deviation), not significantly different from nornal. Mitral valve opening was delayed, occurring 140 ± 40 ms after time of minimum cavity area, compared with 93±14 msec in normals (P<0-01), indicating abnormal relaxation. Peak left ventricular filling ...
Comparison of four right ventricular systolic echocardiographic
... TAPSE had a lower sensitivity. This discrepancy may result from the higher variability and difficulties of acquiring this measurement than PSVtdi. In our study, we found that 13.5mm was the best threshold value for prediciting outcome. Interestingly Ghio et al used a similar threshold in their study ...
... TAPSE had a lower sensitivity. This discrepancy may result from the higher variability and difficulties of acquiring this measurement than PSVtdi. In our study, we found that 13.5mm was the best threshold value for prediciting outcome. Interestingly Ghio et al used a similar threshold in their study ...
Marathon run: cardiovascular adaptation and
... hypertrophic cardiomyopathy.21 Nevertheless, ever since its first description by Henschen in 1899,22 the athlete’s heart has provoked controversial discussions with respect to its health-related consequences. Although professional young athletes may also experience serious cardiovascular maladaptati ...
... hypertrophic cardiomyopathy.21 Nevertheless, ever since its first description by Henschen in 1899,22 the athlete’s heart has provoked controversial discussions with respect to its health-related consequences. Although professional young athletes may also experience serious cardiovascular maladaptati ...
Transthoracic three-dimensional echocardiography in adult
... efforts to produce three-dimensional reconstruction of cardiac ultrasound images, and numerous techniques have been applied (2,3). However, these efforts have been hampered by limited precordial acoustic windows (4), inadequate display (5) and amount of time requested for reconstruction (6). From ou ...
... efforts to produce three-dimensional reconstruction of cardiac ultrasound images, and numerous techniques have been applied (2,3). However, these efforts have been hampered by limited precordial acoustic windows (4), inadequate display (5) and amount of time requested for reconstruction (6). From ou ...
ACC/AHA/ESC 2006 Guidelines for Management of
... Cardiac catheterization should be performed to exclude significant coronary artery disease, which may first require revascularization. Invasive electrophysiological testing may be performed to evaluate for significant conduction system disease or inducible sustained ventricular arrhythmias. However, ...
... Cardiac catheterization should be performed to exclude significant coronary artery disease, which may first require revascularization. Invasive electrophysiological testing may be performed to evaluate for significant conduction system disease or inducible sustained ventricular arrhythmias. However, ...
Pacing System Malfunction: Evaluation and Troubleshooting
... eliminate baseline noise (Sheffield et al, 1985).These filters can markedly reduce the size of pacing artifact in the unipolar pacing system and effectively erase the pacing stimuli in the ...
... eliminate baseline noise (Sheffield et al, 1985).These filters can markedly reduce the size of pacing artifact in the unipolar pacing system and effectively erase the pacing stimuli in the ...
Aetiology of sudden cardiac death in sport: a histopathologist`s
... coroner is responsible for establishing the cause of death. They will ask a consultant pathologist to carry out an autopsy in order to ascertain when, where and how that person died. Once the cause of death is established and is due to natural causes, the coroner can issue a death certificate. Import ...
... coroner is responsible for establishing the cause of death. They will ask a consultant pathologist to carry out an autopsy in order to ascertain when, where and how that person died. Once the cause of death is established and is due to natural causes, the coroner can issue a death certificate. Import ...
Abnormal C-ommunication between the Aorta and Left Ventricle
... ci-irves were obtained, and there vas a small systolic gradienit betveen the left venitriele and the aorta. Fltuoroscopy, hovever, slioved the distal end of the catheter to be cuirved vith the poinlt extendiing npxx ards anid towards the left as slhowIn in figure 4 A
... ci-irves were obtained, and there vas a small systolic gradienit betveen the left venitriele and the aorta. Fltuoroscopy, hovever, slioved the distal end of the catheter to be cuirved vith the poinlt extendiing npxx ards anid towards the left as slhowIn in figure 4 A
influence of sound and light on heart rate variability
... values of HF in males compared with those in females. Plots belonging to subjects under OEC were located to the upper-left of plots belonging to those under CEC, in both male and female subjects. This figure also shows that changes in HF in standard measure were greater than those in LF/HF in standa ...
... values of HF in males compared with those in females. Plots belonging to subjects under OEC were located to the upper-left of plots belonging to those under CEC, in both male and female subjects. This figure also shows that changes in HF in standard measure were greater than those in LF/HF in standa ...
Pericardial Disease:
... from around the heart. This is called a pericardiocentesis (pericardial “tap”). This is a moderately invasive procedure that involves the temporary placement of a catheter into the pericardial space with which the fluid is drained off with a syringe. We recommend that patients that have had a perica ...
... from around the heart. This is called a pericardiocentesis (pericardial “tap”). This is a moderately invasive procedure that involves the temporary placement of a catheter into the pericardial space with which the fluid is drained off with a syringe. We recommend that patients that have had a perica ...
Heart and Circulation of the African Lungfish
... solution of tricaine methanesulfonate (MS 222) in tap water, for 10 to 15 minutes. After anesthesia, the fish were removed from the water and wrapped in moist towels, and their gills were bathed in fresh tap water at room temperature using retrograde perfusion of the gill chambers via the opercula; ...
... solution of tricaine methanesulfonate (MS 222) in tap water, for 10 to 15 minutes. After anesthesia, the fish were removed from the water and wrapped in moist towels, and their gills were bathed in fresh tap water at room temperature using retrograde perfusion of the gill chambers via the opercula; ...
Growth differentiation factor-15 predicts mortality and
... The study group consisted of patients with heart failure undergoing CRT in a single centre, from June 2002 to February 2007. The last follow-up visit was in February 2008. Over this period, 299 patients underwent implantation. For logistical reasons, however, only patients (n ¼ 165) who underwent a ...
... The study group consisted of patients with heart failure undergoing CRT in a single centre, from June 2002 to February 2007. The last follow-up visit was in February 2008. Over this period, 299 patients underwent implantation. For logistical reasons, however, only patients (n ¼ 165) who underwent a ...
Antifailure Therapy Including Spironolactone Improves Left
... Table 1. The median age was 52 years, and all took both a beta-blocker and either an ACE-I or ARB drug. Before study entry, the median duration of taking any of these therapies was 21 weeks, and the median duration on stable doses of beta-blocker was 16 weeks. There was a median of 10 weeks (IQR, 6 ...
... Table 1. The median age was 52 years, and all took both a beta-blocker and either an ACE-I or ARB drug. Before study entry, the median duration of taking any of these therapies was 21 weeks, and the median duration on stable doses of beta-blocker was 16 weeks. There was a median of 10 weeks (IQR, 6 ...
Shock – manifestation of pulmonary atresia with aorto
... about 2 % of cases of congenital heart disease. Most of the cases have intracardiac anatomy of Tetralogy Fallot and present with cyanosis in neonatal age. Objectives: To report a case of a newborn with rare combination of pulmonary atresia, ventricular septal defect and single ventricle physiology p ...
... about 2 % of cases of congenital heart disease. Most of the cases have intracardiac anatomy of Tetralogy Fallot and present with cyanosis in neonatal age. Objectives: To report a case of a newborn with rare combination of pulmonary atresia, ventricular septal defect and single ventricle physiology p ...
Presentation1
... Close blood relatives (parents, children or siblings) of such persons often have enlarged septums, although they may have no symptoms. This disease is most common in young adults. ...
... Close blood relatives (parents, children or siblings) of such persons often have enlarged septums, although they may have no symptoms. This disease is most common in young adults. ...
Electrocardiography
Electrocardiography (ECG or EKG*) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on a patient's body. These electrodes detect the tiny electrical changes on the skin that arise from the heart muscle depolarizing during each heartbeat.In a conventional 12 lead ECG, ten electrodes are placed on the patient's limbs and on the surface of the chest. The overall magnitude of the heart's electrical potential is then measured from twelve different angles (""leads"") and is recorded over a period of time (usually 10 seconds). In this way, the overall magnitude and direction of the heart's electrical depolarization is captured at each moment throughout the cardiac cycle. The graph of voltage versus time produced by this noninvasive medical procedure is referred to as an electrocardiogram (abbreviated ECG or EKG).During each heartbeat, a healthy heart will have an orderly progression of depolarization that starts with pacemaker cells in the sinoatrial node, spreads out through the atrium, passes through the atrioventricular node down into the bundle of His and into the Purkinje fibers spreading down and to the left throughout the ventricles. This orderly pattern of depolarization gives rise to the characteristic ECG tracing. To the trained clinician, an ECG conveys a large amount of information about the structure of the heart and the function of its electrical conduction system. Among other things, an ECG can be used to measure the rate and rhythm of heartbeats, the size and position of the heart chambers, the presence of any damage to the heart's muscle cells or conduction system, the effects of cardiac drugs, and the function of implanted pacemakers.