the cardiovascular system: the heart
... QRS complex -- The QRS complex, the second wave, begins as a small deflection down, followed by a large deflection upward, and ends with a small deflection down. It represents ventricular depolarization, the spread of excitation through the ventricles. T wave -- The T wave, the third wave, is a smal ...
... QRS complex -- The QRS complex, the second wave, begins as a small deflection down, followed by a large deflection upward, and ends with a small deflection down. It represents ventricular depolarization, the spread of excitation through the ventricles. T wave -- The T wave, the third wave, is a smal ...
Pulmonary Atresia and Intact Ventricular Septum
... (B) Shunting across the atrial septum is required to maintain cardiac output. (C) Functional PA is seen with high pulmonary artery pressure with poor RV function, or very severe TR. (D) Coronary artery stenosis or interruption can not be reliably seen by echo. (E) Prostaglandins typically increase O ...
... (B) Shunting across the atrial septum is required to maintain cardiac output. (C) Functional PA is seen with high pulmonary artery pressure with poor RV function, or very severe TR. (D) Coronary artery stenosis or interruption can not be reliably seen by echo. (E) Prostaglandins typically increase O ...
Atrial Septal Defects in Adults
... Embryologically, the septum between the atria is made of septum primum covering the ostium primum orfice, and the septum secundum covering the ostium secundum orfice. In 70% of the population, these septa fuse. A patent foramen ovale exists if the space is covered but the septa are not fused. An ASD ...
... Embryologically, the septum between the atria is made of septum primum covering the ostium primum orfice, and the septum secundum covering the ostium secundum orfice. In 70% of the population, these septa fuse. A patent foramen ovale exists if the space is covered but the septa are not fused. An ASD ...
Heart Murmur in Neonates
... 47 (51.6%) newborns[8]. Rein et al found that 24% of heart murmur in neonates was innocent[9]. Another study has shown the prevalence of heart murmur in 13.7 per 1000 neonates. If a murmur is heard, there is a 42.5% chance of being an underlying cardiac malformation[10]. Yet another study stated tha ...
... 47 (51.6%) newborns[8]. Rein et al found that 24% of heart murmur in neonates was innocent[9]. Another study has shown the prevalence of heart murmur in 13.7 per 1000 neonates. If a murmur is heard, there is a 42.5% chance of being an underlying cardiac malformation[10]. Yet another study stated tha ...
Left Bundle Branch Block, an Old–New Entity | SpringerLink
... successful introduction of cardiac resynchronization therapy (CRT) as a new, device-based treatment option for patients with end-stage heart failure and ventricular conduction delays in the mid-1990s [2, 3]. Several randomized clinical trials have now shown its beneficial potential in patients with ...
... successful introduction of cardiac resynchronization therapy (CRT) as a new, device-based treatment option for patients with end-stage heart failure and ventricular conduction delays in the mid-1990s [2, 3]. Several randomized clinical trials have now shown its beneficial potential in patients with ...
New Cardiac Magnetic Resonance Reference Ranges for Right
... prognostic information in a wide range of conditions. In the case of heart failure, a preserved RV ejection fraction (RVEF) is associated with improved long-term survival.1 The most recent task force criteria for the diagnosis of arrhythmogenic RV cardiomyopathy require the presence of abnormal meas ...
... prognostic information in a wide range of conditions. In the case of heart failure, a preserved RV ejection fraction (RVEF) is associated with improved long-term survival.1 The most recent task force criteria for the diagnosis of arrhythmogenic RV cardiomyopathy require the presence of abnormal meas ...
Atrial Fibrillation
... impulse generating a QRS (others are blocked in the AV node as the node repolarizes). ...
... impulse generating a QRS (others are blocked in the AV node as the node repolarizes). ...
Radiofrequency ablation of premature ventricular contractions
... discern because of their anatomic vicinity, in particular if arising from the right ventricular outflow tract, aortic sinus cusps, and aortomitral continuity (AMC).1–3 A new approach to accurately diagnose ventricular arrhythmias based on noninvasive electrocardiographic imaging was recently introduc ...
... discern because of their anatomic vicinity, in particular if arising from the right ventricular outflow tract, aortic sinus cusps, and aortomitral continuity (AMC).1–3 A new approach to accurately diagnose ventricular arrhythmias based on noninvasive electrocardiographic imaging was recently introduc ...
The effects of 12 weeks aerobic continue exercise on
... cardiovascular function, left ventricular systolic function and remodeling in patients with coronary heart disease after successful angioplasty.In this quasi-experimental study, 30 patients who had undergone coronary artery angioplasty were enrolled. In the pre-test phase, exercise tolerance test an ...
... cardiovascular function, left ventricular systolic function and remodeling in patients with coronary heart disease after successful angioplasty.In this quasi-experimental study, 30 patients who had undergone coronary artery angioplasty were enrolled. In the pre-test phase, exercise tolerance test an ...
Introduction: Eligibility Recommendations for Competitive
... of exercise is reflected in the Task Force 8: Classification of Sports. Training demands vary considerably even within the same sport and the intensity of conditioning regimens often exceed that of competition itself. However, it is often difficult to accurately grade such differences in exercise in ...
... of exercise is reflected in the Task Force 8: Classification of Sports. Training demands vary considerably even within the same sport and the intensity of conditioning regimens often exceed that of competition itself. However, it is often difficult to accurately grade such differences in exercise in ...
the cardiovascular system: the heart
... QRS complex -- The QRS complex, the second wave, begins as a small deflection down, followed by a large deflection upward, and ends with a small deflection down. It represents ventricular depolarization, the spread of excitation through the ventricles. T wave -- The T wave, the third wave, is a smal ...
... QRS complex -- The QRS complex, the second wave, begins as a small deflection down, followed by a large deflection upward, and ends with a small deflection down. It represents ventricular depolarization, the spread of excitation through the ventricles. T wave -- The T wave, the third wave, is a smal ...
CONGESTIVE HEART FAILURE
... heart failure but have never had symptoms of heart failure (usually by finding an ejection fraction of less than 40% on echocardiogram). ...
... heart failure but have never had symptoms of heart failure (usually by finding an ejection fraction of less than 40% on echocardiogram). ...
- British Heart Valve Society
... Valve disease means that the valve has developed abnormally or that it has developed abnormal thickening or become damaged. This may ultimately lead to failure of complete opening of the valve or leakage or sometimes both. Minor leakage can be normal and minor thickening without limitation of openin ...
... Valve disease means that the valve has developed abnormally or that it has developed abnormal thickening or become damaged. This may ultimately lead to failure of complete opening of the valve or leakage or sometimes both. Minor leakage can be normal and minor thickening without limitation of openin ...
Surgical Ventricular Restoration
... Posterior MI is characterized by a flattening of the inferior wall curvature (loss of the physiologic inward bending) that is responsible for the higher incidence of mitral regurgitation compared with anterior MI. A total of 105 patients (59%) were in New York Heart Association (NYHA) functional cla ...
... Posterior MI is characterized by a flattening of the inferior wall curvature (loss of the physiologic inward bending) that is responsible for the higher incidence of mitral regurgitation compared with anterior MI. A total of 105 patients (59%) were in New York Heart Association (NYHA) functional cla ...
Subdivisions of mediastinum
... Left ventricle (LV) • One inlet－left atrioventricular orifice 左房室口 • One outlet－aortic orifice 主动脉口 • Two parts – Inflow tract－rough walls – Outflow tract – aortic vestibule 主动脉前庭, smooth area leading to aortic orifice ...
... Left ventricle (LV) • One inlet－left atrioventricular orifice 左房室口 • One outlet－aortic orifice 主动脉口 • Two parts – Inflow tract－rough walls – Outflow tract – aortic vestibule 主动脉前庭, smooth area leading to aortic orifice ...
Ebstein anomaly
... – At least 50% delamination of anterior leaflet Multiple attachments of anterior leaflet ( most probably mobilization will be inadequate and coaptation with septum ineffective); – Free leading edge of anterior leaflet Papillary muscle attachment to the leaflet prohibit good repair TV displacement: – ...
... – At least 50% delamination of anterior leaflet Multiple attachments of anterior leaflet ( most probably mobilization will be inadequate and coaptation with septum ineffective); – Free leading edge of anterior leaflet Papillary muscle attachment to the leaflet prohibit good repair TV displacement: – ...
Cardiac Devices and Peri-Operative Cardiac Surgery Appearances
... • Findings of near perforation (lead tip close to the epicardium) are not an indication alone for lead removal ...
... • Findings of near perforation (lead tip close to the epicardium) are not an indication alone for lead removal ...
PDF - Circulation: Heart Failure
... Permissions: Requests for permissions to reproduce figures, tables, or portions of articles originally published in Circulation: Heart Failure can be obtained via RightsLink, a service of the Copyright Clearance Center, not the Editorial Office. Once the online version of the published article for w ...
... Permissions: Requests for permissions to reproduce figures, tables, or portions of articles originally published in Circulation: Heart Failure can be obtained via RightsLink, a service of the Copyright Clearance Center, not the Editorial Office. Once the online version of the published article for w ...
Redalyc.Transapical Closure of Left Ventricular to Right Atrial Shunt
... Transapical Closure of Left Ventricular to Right Atrial Shunt Following Endocarditis The communication between the left ventricle (LV) and the right atrium (RA) (Gerbode defect) is a very rare congenital or acquired defect of the septum dividing the right heart from the left heart. In recent years, ...
... Transapical Closure of Left Ventricular to Right Atrial Shunt Following Endocarditis The communication between the left ventricle (LV) and the right atrium (RA) (Gerbode defect) is a very rare congenital or acquired defect of the septum dividing the right heart from the left heart. In recent years, ...
Electrical Activation Of The Ventricular Myocardium
... The purposes of the present investigation were to determine the sequence of ventricular myocardial activation and to look for any specialized conductive tissue pathways in the crocodilian ventricular myocardium. The use of penetrating multi-point electrodes to investigate the spread of electrical ac ...
... The purposes of the present investigation were to determine the sequence of ventricular myocardial activation and to look for any specialized conductive tissue pathways in the crocodilian ventricular myocardium. The use of penetrating multi-point electrodes to investigate the spread of electrical ac ...
The effect of aerobic continuous training and detraining on left
... an increase in the left ventricular mass index, which can be regarded as an adverse precursor of left ventricular hypertrophy. After detraining interventricular septum thickness and posterior wall thickness decreased no significantly. After eight weeks training the left atrium diameter (LA) showed n ...
... an increase in the left ventricular mass index, which can be regarded as an adverse precursor of left ventricular hypertrophy. After detraining interventricular septum thickness and posterior wall thickness decreased no significantly. After eight weeks training the left atrium diameter (LA) showed n ...
Derived copy of Cardiac Cycle
... the chordae tendineae. S3 may be heard in youth, some athletes, and pregnant women. If the sound is heard later in life, it may indicate congestive heart failure, warranting further tests. Some cardiologists refer to the collective S1 , S2 , and S3 sounds as the Kentucky gallop, because they mimic ...
... the chordae tendineae. S3 may be heard in youth, some athletes, and pregnant women. If the sound is heard later in life, it may indicate congestive heart failure, warranting further tests. Some cardiologists refer to the collective S1 , S2 , and S3 sounds as the Kentucky gallop, because they mimic ...
Cardiac Resynchronization Therapy
... retractable/extendable screws, which are built into their tips. Timed electrical impulses are sent from the pulse generator down the leads to the heart, where stimulation results in heart muscle contraction. The most recent guidelines stress that asymptomatic bradycardia rarely qualifies as a class ...
... retractable/extendable screws, which are built into their tips. Timed electrical impulses are sent from the pulse generator down the leads to the heart, where stimulation results in heart muscle contraction. The most recent guidelines stress that asymptomatic bradycardia rarely qualifies as a class ...
Type of article: Original
... houre before the procedure. I.V lines secured and all monitors were connected.Base line readings were recorded. Patient was preoxygenated with 100% oxygen for 5 min and was induced with inj. propofol after premedicating with inj.glycopyrrolate 0.2 mg I.V,Inj midazolam 2 mg I.V, Inj. Fentanyl 150 mcg ...
... houre before the procedure. I.V lines secured and all monitors were connected.Base line readings were recorded. Patient was preoxygenated with 100% oxygen for 5 min and was induced with inj. propofol after premedicating with inj.glycopyrrolate 0.2 mg I.V,Inj midazolam 2 mg I.V, Inj. Fentanyl 150 mcg ...
Hypertrophic cardiomyopathy
Hypertrophic cardiomyopathy (HCM) is a primary disease of the myocardium (the muscle of the heart) in which a portion of the myocardium is hypertrophied (thickened) without any obvious cause, creating functional impairment of the cardiac muscle. It is a leading cause of sudden cardiac death in young athletes.The occurrence of hypertrophic cardiomyopathy is a significant cause of sudden unexpected cardiac death in any age group and as a cause of disabling cardiac symptoms. Younger people are likely to have a more severe form of hypertrophic cardiomyopathy.HCM is frequently asymptomatic until sudden cardiac death, and for this reason some suggest routinely screening certain populations for this disease.A cardiomyopathy is a disease that affects the muscle of the heart. With HCM, the myocytes (cardiac contractile cells) in the heart increase in size, which results in the thickening of the heart muscle. In addition, the normal alignment of muscle cells is disrupted, a phenomenon known as myocardial disarray. HCM also causes disruptions of the electrical functions of the heart. HCM is most commonly due to a mutation in one of nine sarcomeric genes that results in a mutated protein in the sarcomere, the primary component of the myocyte (the muscle cell of the heart). These are predominantly single-point missense mutations in the genes for beta-myosin heavy chain (MHC), myosin-binding protein C, cardiac troponinT, or tropomyosin. These mutations cause myofibril and myocyte structural abnormalities and possible deficiencies in force generation. Not to be confused with dilated cardiomyopathy or any other cardiomyopathy.While most literature so far focuses on European, American, and Japanese populations, HCM appears in all ethnic groups. The prevalence of HCM is about 0.2% to 0.5% of the general population.