Spontaneous resolution of ventricular tachycardia with right bundle
... posterior fascicle. Although the mechanism of this tachycardia may not always be uniform, investigators have found that idiopathic left ventricular tachycardia can be reentrant1,2,5. Moreover, it has been observed that small intramyocardial tumors were the source of permanent VT in infants despite a ...
... posterior fascicle. Although the mechanism of this tachycardia may not always be uniform, investigators have found that idiopathic left ventricular tachycardia can be reentrant1,2,5. Moreover, it has been observed that small intramyocardial tumors were the source of permanent VT in infants despite a ...
Myocardium 2013
... End-stage heart failure can be accompanied by dilatation. The major problems in HCM are: – atrial fibrillation with mural thrombus formation, – embolization from the mural thrombi, – infective endocarditis on the mitral valve, – intractable cardiac failure, – sudden death (most common cause of deat ...
... End-stage heart failure can be accompanied by dilatation. The major problems in HCM are: – atrial fibrillation with mural thrombus formation, – embolization from the mural thrombi, – infective endocarditis on the mitral valve, – intractable cardiac failure, – sudden death (most common cause of deat ...
The Three-Dimensional Arrangement of the Myocytes Aggregated
... Histological studies show that the myocardium making up the ventricular wall of mammals is composed of elongated contractile cells, the myocytes, which are embedded in a matrix of connective tissue (Lev and Simkins, 1956; Grant, 1965). According to traditional views, the myocytes are connected end-t ...
... Histological studies show that the myocardium making up the ventricular wall of mammals is composed of elongated contractile cells, the myocytes, which are embedded in a matrix of connective tissue (Lev and Simkins, 1956; Grant, 1965). According to traditional views, the myocytes are connected end-t ...
The Architecture of the Right Ventricular Outflow Tract
... A word about the embryogenesis of the interventricular septum may be appropriate for understanding these studies. It has been known for more than a century that two different muscular tissues join to form the septum.4 One, growing from below, arises as an invaginating septum at the apex of the ventr ...
... A word about the embryogenesis of the interventricular septum may be appropriate for understanding these studies. It has been known for more than a century that two different muscular tissues join to form the septum.4 One, growing from below, arises as an invaginating septum at the apex of the ventr ...
Amiodarone role in ventricular arrhythmias in aortic Stenosis
... During conduction of the impulse, axial current flows from one myocardial cell to an adjacent cell through the gap junctions of the intercalated disks. The anisotropic properties involved are determined by the alignment of cardiac myocytes, the distribution of gap junctions, and the geometry of extr ...
... During conduction of the impulse, axial current flows from one myocardial cell to an adjacent cell through the gap junctions of the intercalated disks. The anisotropic properties involved are determined by the alignment of cardiac myocytes, the distribution of gap junctions, and the geometry of extr ...
Atrial Fibrillation - St. Joseph`s Healthcare Hamilton
... applied to the heart through the chest wall. The shock is given at a specific time during the heart’s rhythm to return your heart to a normal or sinus rhythm. This is a safe procedure carried out in hospital in a monitored setting with sedation. 3. Atrial fibrillation ablation ...
... applied to the heart through the chest wall. The shock is given at a specific time during the heart’s rhythm to return your heart to a normal or sinus rhythm. This is a safe procedure carried out in hospital in a monitored setting with sedation. 3. Atrial fibrillation ablation ...
Sonographic screening examination of the fetal heart
... be evaluated easily even if the four-chamber view is not visualized satisfactorily50 . Situs abnormalities should be suspected when the fetal heart and/or stomach are not found on the left side. Abnormal axis increases the risk of a cardiac malformation, especially involving the outflow tracts. This ...
... be evaluated easily even if the four-chamber view is not visualized satisfactorily50 . Situs abnormalities should be suspected when the fetal heart and/or stomach are not found on the left side. Abnormal axis increases the risk of a cardiac malformation, especially involving the outflow tracts. This ...
Diagnostic Value of Cardiovascular Magnetic
... with unrecognised ischemic event. Silent myocardial infarctions are prevalent among diabetic patients and inflict significant morbidity and mortality (14). In this study, 4.4% of the patients had unrecognised myocardial infarction that were identified by subendocardial late enhancement. CMR is an el ...
... with unrecognised ischemic event. Silent myocardial infarctions are prevalent among diabetic patients and inflict significant morbidity and mortality (14). In this study, 4.4% of the patients had unrecognised myocardial infarction that were identified by subendocardial late enhancement. CMR is an el ...
Heterogeneous responses of systolic and diastolic left ventricular
... criteria established by the European Society of Cardiology (ESC).20 However, it can be difficult to establish a diagnosis in patients who are asymptomatic at rest but suffer from exercise intolerance despite preserved ejection fraction (EF) without evidence of left ventricular (LV) hypertrophy or lef ...
... criteria established by the European Society of Cardiology (ESC).20 However, it can be difficult to establish a diagnosis in patients who are asymptomatic at rest but suffer from exercise intolerance despite preserved ejection fraction (EF) without evidence of left ventricular (LV) hypertrophy or lef ...
The P-Wave - Journal of the Advanced Practitioner in Oncology
... other”? If intermittently present, mark. Assess PR interval in EACH complex, observing for variations in P-waves, or length of interval. Normal is 0.12–0.20 sec [3–5 small boxes]. Assess QRS interval in several complexes, noting if any are greatly at variance to the routine. Normal is 0.04–0.10 sec ...
... other”? If intermittently present, mark. Assess PR interval in EACH complex, observing for variations in P-waves, or length of interval. Normal is 0.12–0.20 sec [3–5 small boxes]. Assess QRS interval in several complexes, noting if any are greatly at variance to the routine. Normal is 0.04–0.10 sec ...
Associations Between Cardiac Fibrosis and
... to corresponding atria (Fig. 1). Representative images of CTGF expression in RA are shown in Figure 2. CTGF was expressed by cardiomyocytes from atrial myocardium of both groups (Fig. 2C, 2D). The level of CTGF immunoreactivity in individual cardiomyocytes within one sample was very similar. However ...
... to corresponding atria (Fig. 1). Representative images of CTGF expression in RA are shown in Figure 2. CTGF was expressed by cardiomyocytes from atrial myocardium of both groups (Fig. 2C, 2D). The level of CTGF immunoreactivity in individual cardiomyocytes within one sample was very similar. However ...
Form and Function in Reptilian Circulations1
... tilian families. In addition to two atrial the pulmonary circulation. Under these chambers, the heart is completely divided conditions, the crocodilian heart operates into a thick-walled left ventricle, from as a dual pressure pump with complete anawhich the right aorta arises, and a thinner- tomica ...
... tilian families. In addition to two atrial the pulmonary circulation. Under these chambers, the heart is completely divided conditions, the crocodilian heart operates into a thick-walled left ventricle, from as a dual pressure pump with complete anawhich the right aorta arises, and a thinner- tomica ...
How to diagnose diastolic heart failure: a consensus statement on
... Structural, functional, and molecular biological arguments support the theory that clinical heart failure presents and evolves not as a single syndrome but as two syndromes, one with depressed LVEF and other with normal LVEF and specific mechanisms responsible for diastolic LV dysfunction (Figure 1). ...
... Structural, functional, and molecular biological arguments support the theory that clinical heart failure presents and evolves not as a single syndrome but as two syndromes, one with depressed LVEF and other with normal LVEF and specific mechanisms responsible for diastolic LV dysfunction (Figure 1). ...
How to diagnose diastolic heart failure: a consensus
... Structural, functional, and molecular biological arguments support the theory that clinical heart failure presents and evolves not as a single syndrome but as two syndromes, one with depressed LVEF and other with normal LVEF and specific mechanisms responsible for diastolic LV dysfunction (Figure 1). ...
... Structural, functional, and molecular biological arguments support the theory that clinical heart failure presents and evolves not as a single syndrome but as two syndromes, one with depressed LVEF and other with normal LVEF and specific mechanisms responsible for diastolic LV dysfunction (Figure 1). ...
Intraoperative Recording of Specialized Atrioventricular Conduction
... Two patients had double outlet right ventricle with ventricular septal defect and pulmonary artery band, and one patient each had Ebstein's anomaly and single atrium with AV canal defect. Results In 39 of the 47 patients studied, specialized atrial ventricular conduction tissue was identified by the ...
... Two patients had double outlet right ventricle with ventricular septal defect and pulmonary artery band, and one patient each had Ebstein's anomaly and single atrium with AV canal defect. Results In 39 of the 47 patients studied, specialized atrial ventricular conduction tissue was identified by the ...
Technique and Outcomes of Pulmonary Endarterectomy Surgery
... aorta is cross-clamped and a single dose of cold cardioplegia solution is adm in istered. Additiona l myocardial protection is obtained by the use of a cooling jacket wrapped around the heart. The entire procedure is now performed with a single aortic crossclamp period with no further administration ...
... aorta is cross-clamped and a single dose of cold cardioplegia solution is adm in istered. Additiona l myocardial protection is obtained by the use of a cooling jacket wrapped around the heart. The entire procedure is now performed with a single aortic crossclamp period with no further administration ...
Arrhythmias
... o Progressive prolongation of PR interval leading finally to the dropout of a QRS complex & then the cycle is repeated. ( notice that there is irregular pulse ). o This condition is not too serious and may occur physiologically during sleep in athletes. Type II 2nd degree ( Mobitz II ) : ...
... o Progressive prolongation of PR interval leading finally to the dropout of a QRS complex & then the cycle is repeated. ( notice that there is irregular pulse ). o This condition is not too serious and may occur physiologically during sleep in athletes. Type II 2nd degree ( Mobitz II ) : ...
cardiovascular dynamics of the chelonia during apnoea and lung
... The blood pressures in the arteries were measured with Sanborn 267 B transducers.. When these manometers were connected to cannulae of PP25 tubing 25-35 c m l° n 8 the undamped natural frequency of the whole recording system was 45 c/s, with a damping value 37 % of critical. Bio-Tech BT 70 transduce ...
... The blood pressures in the arteries were measured with Sanborn 267 B transducers.. When these manometers were connected to cannulae of PP25 tubing 25-35 c m l° n 8 the undamped natural frequency of the whole recording system was 45 c/s, with a damping value 37 % of critical. Bio-Tech BT 70 transduce ...
The Pulmonary Circulation in Pulmonary Hypertension Novel insights into
... parameters such as right ventricular end-diastolic and end-systolic volume have shown their importance in predicting survival in PAH13,14,20,21,23,25,31,32. It is thus evident that the RV plays an essential role in disease progression in pulmonary hypertension patients. However, the problem with the ...
... parameters such as right ventricular end-diastolic and end-systolic volume have shown their importance in predicting survival in PAH13,14,20,21,23,25,31,32. It is thus evident that the RV plays an essential role in disease progression in pulmonary hypertension patients. However, the problem with the ...
Assessment of pulmonary artery pressure by echocardiography—A
... by right heart catheterisation [1]. Pulmonary hypertension could be a complication of cardiac or pulmonary disease or a primary disorder of small pulmonary arteries. Transthoracic echocardiography (TTE) can be used to investigate and quantify pulmonary artery pressure (PAP). Elevated pulmonary press ...
... by right heart catheterisation [1]. Pulmonary hypertension could be a complication of cardiac or pulmonary disease or a primary disorder of small pulmonary arteries. Transthoracic echocardiography (TTE) can be used to investigate and quantify pulmonary artery pressure (PAP). Elevated pulmonary press ...
Cardiac Arrhythmias (Part 2)
... atrial pacing alone to increase the ventricular rate: increases in heart rate from 80 to 121 beats/min altered cardiac index from 3.67 to 3.72 liters/ min/m2. Further increases in atrial pacing rate caused a small decrease in flow to 3.2 liters/min/m2. Stein et al.9 reported similar results. On the ...
... atrial pacing alone to increase the ventricular rate: increases in heart rate from 80 to 121 beats/min altered cardiac index from 3.67 to 3.72 liters/ min/m2. Further increases in atrial pacing rate caused a small decrease in flow to 3.2 liters/min/m2. Stein et al.9 reported similar results. On the ...
EuroEcho-Imaging 2013, Istanbul, Final Programme
... Association of Cardiovascular Imaging (EACVI). The aim of EuroEcho-Imaging 2013 is to create an exciting forum for both clinicians and scientists to present and discuss the most up-to-date research and clinical findings on the broad spectrum of echocardiography and other cardiovascular imaging modal ...
... Association of Cardiovascular Imaging (EACVI). The aim of EuroEcho-Imaging 2013 is to create an exciting forum for both clinicians and scientists to present and discuss the most up-to-date research and clinical findings on the broad spectrum of echocardiography and other cardiovascular imaging modal ...
STUDIES ON THE CONSECUTIVE PHASES OF THE CARDIAC
... tension) as expressi,ng the nature of ventricular contraction during the ejection phase. This phrase, however, is also not quite descriptive of the dynamic conditions of the normal heart which cont,racts first against an increasing but later against a decreasing load. If a general term is desirable, ...
... tension) as expressi,ng the nature of ventricular contraction during the ejection phase. This phrase, however, is also not quite descriptive of the dynamic conditions of the normal heart which cont,racts first against an increasing but later against a decreasing load. If a general term is desirable, ...
Pulmonary hypertension at exercise in COPD: does it matter? EDITORIAL
... disease severity. Pulmonary hypertension defined by a mPAP higher than 25 mmHg was identified at rest in 27% of the patients, increasing to approximately half of those in GOLD stage IV. This is in keeping with previous reports of increased PAP in proportion to COPD severity [1, 2]. More original was ...
... disease severity. Pulmonary hypertension defined by a mPAP higher than 25 mmHg was identified at rest in 27% of the patients, increasing to approximately half of those in GOLD stage IV. This is in keeping with previous reports of increased PAP in proportion to COPD severity [1, 2]. More original was ...
A case of Tetralogy of Fallot with left coronary artery to pulmonary
... blood pressure of 100/70 mmHg. There was cyanosis, pan digital clubbing and polycythemia (hematocrit of 68%). Cardiovascular system examination revealed normal first heart sound, single second sound and continuous murmur best heard in left 3rd intercostal space in the parasternal area. Chest X-ray s ...
... blood pressure of 100/70 mmHg. There was cyanosis, pan digital clubbing and polycythemia (hematocrit of 68%). Cardiovascular system examination revealed normal first heart sound, single second sound and continuous murmur best heard in left 3rd intercostal space in the parasternal area. Chest X-ray s ...
Mitral insufficiency
Mitral insufficiency (MI), mitral regurgitation or mitral incompetence is a disorder of the heart in which the mitral valve does not close properly when the heart pumps out blood. It is the abnormal leaking of blood backwards from the left ventricle, through the mitral valve, into the left atrium, when the left ventricle contracts, i.e. there is regurgitation of blood back into the left atrium. MI is the most common form of valvular heart disease.