Secundum atrial septal defect in the adult. Clinical
... portion expands. The latter will form the primary common atrium and due to the looping it will have a posterior and superior position. At this stage there are two venous channels connected to the atrium, the right and left sinus horns. The former will develop to the right-sided caval veins while the ...
... portion expands. The latter will form the primary common atrium and due to the looping it will have a posterior and superior position. At this stage there are two venous channels connected to the atrium, the right and left sinus horns. The former will develop to the right-sided caval veins while the ...
Secundum atrial septal defect in the adult. Clinical
... portion expands. The latter will form the primary common atrium and due to the looping it will have a posterior and superior position. At this stage there are two venous channels connected to the atrium, the right and left sinus horns. The former will develop to the right-sided caval veins while the ...
... portion expands. The latter will form the primary common atrium and due to the looping it will have a posterior and superior position. At this stage there are two venous channels connected to the atrium, the right and left sinus horns. The former will develop to the right-sided caval veins while the ...
Document
... necessary to keep the insides of these cells relatively electronegative. These ions pass into and out of the cell through special ion channels in the cell membrane. The most common natural cause of sudden death in young persons is a disturbance in the electrical flow through the heart, called an arr ...
... necessary to keep the insides of these cells relatively electronegative. These ions pass into and out of the cell through special ion channels in the cell membrane. The most common natural cause of sudden death in young persons is a disturbance in the electrical flow through the heart, called an arr ...
ACC/AHA/ASE 2003 Guideline Update for the Clinical Application of
... Anesthesiologists (SCA). There are extensive revisions especially of the sections on ischemic heart disease; congestive heart failure, cardiomyopathy, and assessment of left ventricular function; and screening and echocardiography in the critically ill. There are new tables of evidence and extensive ...
... Anesthesiologists (SCA). There are extensive revisions especially of the sections on ischemic heart disease; congestive heart failure, cardiomyopathy, and assessment of left ventricular function; and screening and echocardiography in the critically ill. There are new tables of evidence and extensive ...
Segmental Analysis I
... The infundibular septum is between PV and AoV above crista. The membranous septum is between the AoV and TV. The inlet septum is related to the AV canal. ...
... The infundibular septum is between PV and AoV above crista. The membranous septum is between the AoV and TV. The inlet septum is related to the AV canal. ...
Comprehensive characterisation of hypertensive heart disease left
... *2Eccentric LVH versus Normal LV: p=0.035. *3Normal LV versus Concentric LVH: p=0.020 and Normal LV versus Eccentric LVH: p=0.016. *4Controls versus Normal LV: p=0.027. *5Controls versus Normal LV: p=0.017, Controls versus Concentric remodelling: p<0.0001, Controls versus Concentric LVH: p=0.001 and ...
... *2Eccentric LVH versus Normal LV: p=0.035. *3Normal LV versus Concentric LVH: p=0.020 and Normal LV versus Eccentric LVH: p=0.016. *4Controls versus Normal LV: p=0.027. *5Controls versus Normal LV: p=0.017, Controls versus Concentric remodelling: p<0.0001, Controls versus Concentric LVH: p=0.001 and ...
Effects of Ischemia and Hypercarbic Acidosis on Myocyte Calcium
... The time courses of changes in pHI and cytosolic calcium were compared in isolated perfused rabbit hearts with the use of the calcium-sensitive fluorescent indicator indo-1 and the pH indicator 2',7'-bis(2-carboxyethyl)-5(6)-carboxyfluorescein (BCECF). Cell-permeant forms of these indicators were lo ...
... The time courses of changes in pHI and cytosolic calcium were compared in isolated perfused rabbit hearts with the use of the calcium-sensitive fluorescent indicator indo-1 and the pH indicator 2',7'-bis(2-carboxyethyl)-5(6)-carboxyfluorescein (BCECF). Cell-permeant forms of these indicators were lo ...
Cross-Talk Between Cardiac Muscle and Coronary Vasculature
... proportional to ventricular pressure. They explain the global effects of contraction on coronary flow and the effects of contraction in the layers of the heart wall. The varying elastance model, the muscle shortening and thickening model, and the vascular deformation model are based on direct contac ...
... proportional to ventricular pressure. They explain the global effects of contraction on coronary flow and the effects of contraction in the layers of the heart wall. The varying elastance model, the muscle shortening and thickening model, and the vascular deformation model are based on direct contac ...
Chow Sample Chap 1
... activation nearly simultaneous throughout the ventricles. This rapid conduction, and simultaneous activation of the right and left ventricles, results in the narrow QRS complex seen on a normal ECG. If an impulse is transmitted throughout the ventricle without using the His-Purkinje system, it takes ...
... activation nearly simultaneous throughout the ventricles. This rapid conduction, and simultaneous activation of the right and left ventricles, results in the narrow QRS complex seen on a normal ECG. If an impulse is transmitted throughout the ventricle without using the His-Purkinje system, it takes ...
cellular update From syncitium to regulated pump: a cardiac muscle
... can represent findings that are decades old or more contemporary classic papers such as original experiments related to the discovery of Ca2⫹ sparks (3). This approach has allowed for the prioritization of necessary core concepts while assuring exposure to evolving information to expand currently ac ...
... can represent findings that are decades old or more contemporary classic papers such as original experiments related to the discovery of Ca2⫹ sparks (3). This approach has allowed for the prioritization of necessary core concepts while assuring exposure to evolving information to expand currently ac ...
Structural study of pulmonary circulation and of heart in total
... The inflow and outflow tracts of both ventricles and the ventricular free wall thickness were measured according to the method described by de la Cruz et al. (1960). The heart was weighed after being fixed for at least one week in buffered formol saline, Millard (1965) having shown that by this time ...
... The inflow and outflow tracts of both ventricles and the ventricular free wall thickness were measured according to the method described by de la Cruz et al. (1960). The heart was weighed after being fixed for at least one week in buffered formol saline, Millard (1965) having shown that by this time ...
REGULATION OF CARDIAC VOLTAGE GATED POTASSIUM
... Cardiovascular disease (CVD) is a major cause of mortality and morbidity worldwide. CVD accounts for more deaths than all forms of cancer in the United States. Hypertension, Heart Failure and Atrial Fibrillation are the most common diagnosis, hospitalization cause and the sustained cardiac arrhythmi ...
... Cardiovascular disease (CVD) is a major cause of mortality and morbidity worldwide. CVD accounts for more deaths than all forms of cancer in the United States. Hypertension, Heart Failure and Atrial Fibrillation are the most common diagnosis, hospitalization cause and the sustained cardiac arrhythmi ...
Cardiac Rhythm Management Devices (Part II)
... can be corrected by reprogramming.3 Oversensing. Any electrical signal of sufficient amplitude and frequency occurring during the pacemaker alert period can be sensed and can reset the timing. For example, ventricular depolarization sensed by an atrial demand pacemaker may cause inappropriate inhibi ...
... can be corrected by reprogramming.3 Oversensing. Any electrical signal of sufficient amplitude and frequency occurring during the pacemaker alert period can be sensed and can reset the timing. For example, ventricular depolarization sensed by an atrial demand pacemaker may cause inappropriate inhibi ...
PDF - Circulation: Arrhythmia and Electrophysiology
... Background—For patients with symptomatic New York Heart Association class III or IV, ejection fraction ⱕ35%, and QRS ⱖ130 ms, cardiac resynchronization therapy (CRT) has become an established treatment option. However, use of these implant criteria fails to result in clinical or echocardiographic im ...
... Background—For patients with symptomatic New York Heart Association class III or IV, ejection fraction ⱕ35%, and QRS ⱖ130 ms, cardiac resynchronization therapy (CRT) has become an established treatment option. However, use of these implant criteria fails to result in clinical or echocardiographic im ...
EACVI position paper:multimodality imaging in pericardial disease
... Transthoracic Doppler echocardiography is considered as the firstline imaging modality in almost all types of pericardial diseases because it is simple and quick to perform, widely available and safe.2 However, two-dimensional (2D) echocardiography has several weaknesses, mainly related to its depen ...
... Transthoracic Doppler echocardiography is considered as the firstline imaging modality in almost all types of pericardial diseases because it is simple and quick to perform, widely available and safe.2 However, two-dimensional (2D) echocardiography has several weaknesses, mainly related to its depen ...
Why, When and How Should Atrial Septal Defects Be
... Fig. 2. Bar diagram (constructed from the data of Murphy et al 1990) depicting 27-year survival rates following closure of atrial septal defect by surgery; these data were compared with those of normal population. If surgery is performed prior to 24 years of age, there was no significant difference ...
... Fig. 2. Bar diagram (constructed from the data of Murphy et al 1990) depicting 27-year survival rates following closure of atrial septal defect by surgery; these data were compared with those of normal population. If surgery is performed prior to 24 years of age, there was no significant difference ...
Validation of the Heart-Rate Signal Provided by the Zephyr
... and repolarization parameters such as QT interval [20] Twave alternans [21,22] and f99 [23]. Still, there are several important differences between BH3 and traditional clinical ECG devices. First of all, the latter provides only one lead ECG whereas the former provide at least 12-lead ECG, and repol ...
... and repolarization parameters such as QT interval [20] Twave alternans [21,22] and f99 [23]. Still, there are several important differences between BH3 and traditional clinical ECG devices. First of all, the latter provides only one lead ECG whereas the former provide at least 12-lead ECG, and repol ...
PDF Article
... an accumulation and enhanced dimension of collagen fibers, together with their realignment relative to muscle, have been observed in left ventricular pressure overload hypertrophy (see Ref. 6 for review). Initially, the physical transformation of collagen fibers is an adaptive process that facilitat ...
... an accumulation and enhanced dimension of collagen fibers, together with their realignment relative to muscle, have been observed in left ventricular pressure overload hypertrophy (see Ref. 6 for review). Initially, the physical transformation of collagen fibers is an adaptive process that facilitat ...
The Combinatorial Activities of Nkx2.5 and dHAND Are Essential for
... Nkx2.5/Csx and dHAND/Hand2 are conserved transcription factors that are coexpressed in the precardiac mesoderm and early heart tube and control distinct developmental events during cardiogenesis. To understand whether Nkx2.5 and dHAND may function in overlapping genetic pathways, we generated mouse ...
... Nkx2.5/Csx and dHAND/Hand2 are conserved transcription factors that are coexpressed in the precardiac mesoderm and early heart tube and control distinct developmental events during cardiogenesis. To understand whether Nkx2.5 and dHAND may function in overlapping genetic pathways, we generated mouse ...
Right ventricular remodeling and function in pulmonary arterial hypertension
... thickening, fibrosis of the adventitia, thrombotic lesions and the presence of plexiform lesions in the small pulmonary arteries which are thought to be major contributors to the elevated PVR3. PAH is a rare disease with an estimated prevalence of 15 cases per million in the general adult population ...
... thickening, fibrosis of the adventitia, thrombotic lesions and the presence of plexiform lesions in the small pulmonary arteries which are thought to be major contributors to the elevated PVR3. PAH is a rare disease with an estimated prevalence of 15 cases per million in the general adult population ...
Accuracy of ECG interpretation in competitive athletes: the impact of
... ECG criteria and recommendations for secondary evaluations of abnormal fi ndings.8 The most significant change from past ECG guidelines is the elimination of isolated QRS voltage criteria for left ventricular hypertrophy (LVH) as a cause for further evaluation. Isolated voltage criterion for LVH is an ...
... ECG criteria and recommendations for secondary evaluations of abnormal fi ndings.8 The most significant change from past ECG guidelines is the elimination of isolated QRS voltage criteria for left ventricular hypertrophy (LVH) as a cause for further evaluation. Isolated voltage criterion for LVH is an ...
Three-dimensional transmural organization of perimysial collagen in
... which interconnects adjacent myocytes, in considerable detail (6, 35) and also to visualize features of the perimysial collagen network (6, 27, 30, 35, 36). However, such studies have been limited to tissue volumes too small to capture the extensive nature of myolaminar architecture. High-resolution ...
... which interconnects adjacent myocytes, in considerable detail (6, 35) and also to visualize features of the perimysial collagen network (6, 27, 30, 35, 36). However, such studies have been limited to tissue volumes too small to capture the extensive nature of myolaminar architecture. High-resolution ...
ACCF/HRS/AHA/ASE/HFSA/SCAI/SCCT/SCMR 2013 Appropriate
... Jessup M, Kapa S, Kremers MS, Lindsay BD, Stevenson LW. ACCF/HRS/AHA/ ASE/HFSA/SCAI/SCCT/SCMR 2013 appropriate use criteria for implantable cardioverter-defibrillators and cardiac resynchronization therapy: a report of the American College of Cardiology Foundation Appropriate Use Criteria Task Force ...
... Jessup M, Kapa S, Kremers MS, Lindsay BD, Stevenson LW. ACCF/HRS/AHA/ ASE/HFSA/SCAI/SCCT/SCMR 2013 appropriate use criteria for implantable cardioverter-defibrillators and cardiac resynchronization therapy: a report of the American College of Cardiology Foundation Appropriate Use Criteria Task Force ...
The Effects of /3-Adrenergic Stimulation on the
... Patients were eligible for this prospective study if they had (1) clinical sustained VT, ventricular fibrillation, aborted sudden cardiac death, or syncope resulting from VT, (2) inducible sustained VT during baseline drug-free electrophysiologic study, and (3) they were treated for clinical indicat ...
... Patients were eligible for this prospective study if they had (1) clinical sustained VT, ventricular fibrillation, aborted sudden cardiac death, or syncope resulting from VT, (2) inducible sustained VT during baseline drug-free electrophysiologic study, and (3) they were treated for clinical indicat ...
Mechanisms of Long-Duration Ventricular€Fibrillation in Human
... OBJECTIVES This study sought to determine the characteristics of human LDVF, particularly as it contrasts with short-duration VF (SDVF), and evaluate the role of Purkinje fibers in its maintenance. BACKGROUND The electrophysiological mechanisms of long-duration ventricular fibrillation (LDVF) have not ...
... OBJECTIVES This study sought to determine the characteristics of human LDVF, particularly as it contrasts with short-duration VF (SDVF), and evaluate the role of Purkinje fibers in its maintenance. BACKGROUND The electrophysiological mechanisms of long-duration ventricular fibrillation (LDVF) have not ...
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.