Implantable Defibrillators for Secondary Prevention of Sudden
... had cardiac surgery between 1999 and 2005 and an ICD implanted within 3 months of surgery. One hundred sixty-four patients were identified; 93/164 had an ICD for sustained pre- or postoperative ventricular tachycardia or fibrillation requiring resuscitation. Records were reviewed for the following: pr ...
... had cardiac surgery between 1999 and 2005 and an ICD implanted within 3 months of surgery. One hundred sixty-four patients were identified; 93/164 had an ICD for sustained pre- or postoperative ventricular tachycardia or fibrillation requiring resuscitation. Records were reviewed for the following: pr ...
Supravalvular aortic stenosis Echocardiographicfeatures
... The diagnosis was confirmed by cardiac catheterization in both and at operation in I. A systematic echocardiographic approach to such patients is described. The characteristic finding in these patients was the narrowing of the diameter of the aortic lumen at the stenotic area just distal to the aort ...
... The diagnosis was confirmed by cardiac catheterization in both and at operation in I. A systematic echocardiographic approach to such patients is described. The characteristic finding in these patients was the narrowing of the diameter of the aortic lumen at the stenotic area just distal to the aort ...
Minimally Invasive Mitral Valve Surgery
... minimally invasive technique for mitral valve surgery is to provide some benefit to the patient in terms of minimized both musculoskeletal and cardiac trauma by performing a small chest wall incision. Another potential advantage of the less invasive approach includes reduce pain, reduce bleeding, lo ...
... minimally invasive technique for mitral valve surgery is to provide some benefit to the patient in terms of minimized both musculoskeletal and cardiac trauma by performing a small chest wall incision. Another potential advantage of the less invasive approach includes reduce pain, reduce bleeding, lo ...
Assessment of systemic right ventricular function using tissue
... ventricle as well as regional wall motion abnormalities may develop in patients with functionally single ventricle following the Fontan procedure. This is related to persisting abnormal filling of the ventricle that was previously volume overloaded. Diastolic dysfunction may be diagnosed based on a ...
... ventricle as well as regional wall motion abnormalities may develop in patients with functionally single ventricle following the Fontan procedure. This is related to persisting abnormal filling of the ventricle that was previously volume overloaded. Diastolic dysfunction may be diagnosed based on a ...
Imaging pitfalls, normal anatomy, and anatomical variants that can
... The prominent muscular bands within the right ventricle are composed of the parietal band, septomarginal band, septal band, and moderator band (28,29). The most commonly seen septomarginal trabeculation is the moderator band, a heavily trabeculated muscle and a unique feature of the right ventricle ...
... The prominent muscular bands within the right ventricle are composed of the parietal band, septomarginal band, septal band, and moderator band (28,29). The most commonly seen septomarginal trabeculation is the moderator band, a heavily trabeculated muscle and a unique feature of the right ventricle ...
Ventricular Assist Devices in Heart Failure: How to Support the Heart
... (beta1-antagonist) treatment, both alone and in combination, led to decreased apoptosis levels in the ischemic heart failure rat model. Remarkably, effects of the combined treatment with clenbuterol and metoprolol were additive (Xydas et al. 2006). Nevertheless, the usefulness of clenbuterol adminis ...
... (beta1-antagonist) treatment, both alone and in combination, led to decreased apoptosis levels in the ischemic heart failure rat model. Remarkably, effects of the combined treatment with clenbuterol and metoprolol were additive (Xydas et al. 2006). Nevertheless, the usefulness of clenbuterol adminis ...
Neurocirculatory asthenia
... and alcohol, might explain the great frequency of this ailment,but actually the revers,e Was found, and it was observed that the victims of this disorder, realizing their sensi tj.veness, indulged in these things less than did the average sold-ler. ...
... and alcohol, might explain the great frequency of this ailment,but actually the revers,e Was found, and it was observed that the victims of this disorder, realizing their sensi tj.veness, indulged in these things less than did the average sold-ler. ...
mechanical properties of the heart
... chamber increases and decreases muscle length, and therefore sarcomere lengths, increase and decreases. Complex mathematical models are available to interrelate muscle length and force generation to ventricular chamber pressure and volumes, but there are still many unanswered questions about this tr ...
... chamber increases and decreases muscle length, and therefore sarcomere lengths, increase and decreases. Complex mathematical models are available to interrelate muscle length and force generation to ventricular chamber pressure and volumes, but there are still many unanswered questions about this tr ...
Indian Pacing and Electrophysiology Journal - Antzelevitch
... ventricles. Our study is unique in highlighting the sequence in change in the LV and RV diastolic and systolic function in a serial fashion in VVI paced patients. There is often a debate whether LV dysfunction after long term ventricular pacing is real or is dependent on pre-existing disease. Mohan ...
... ventricles. Our study is unique in highlighting the sequence in change in the LV and RV diastolic and systolic function in a serial fashion in VVI paced patients. There is often a debate whether LV dysfunction after long term ventricular pacing is real or is dependent on pre-existing disease. Mohan ...
Tissue pathways for cardiovascular pathology
... mononuclear, giant cell or granulomatous. Associated muscle damage/necrosis must be documented. For a diagnosis of myocarditis, the Dallas Criteria are used: “an inflammatory infiltrate of the myocardium with necrosis and/or muscle degeneration of myocytes not typical of ischaemic damage associated ...
... mononuclear, giant cell or granulomatous. Associated muscle damage/necrosis must be documented. For a diagnosis of myocarditis, the Dallas Criteria are used: “an inflammatory infiltrate of the myocardium with necrosis and/or muscle degeneration of myocytes not typical of ischaemic damage associated ...
Endocarditis - Hatzalah of Miami-Dade
... majority of cases of endocarditis • tricuspid valve, either alone or in combination, us most often infected ...
... majority of cases of endocarditis • tricuspid valve, either alone or in combination, us most often infected ...
SERIES ‘‘PHYSIOLOGY IN RESPIRATORY MEDICINE’’ A.T. Dinh-Xuan
... versa, the question remains to be answered whether an optimal description also should incorporate ventricular direct and/or series interdependency [36, 37]. Ventricular interdependency in pulmonary hypertension needs further studies, but accounting for this effect will increase complexity, which may ...
... versa, the question remains to be answered whether an optimal description also should incorporate ventricular direct and/or series interdependency [36, 37]. Ventricular interdependency in pulmonary hypertension needs further studies, but accounting for this effect will increase complexity, which may ...
Feature Extraction for Detection of Ventricular Tachycardia and
... heart is disturbed. Among various types of arrhythmias, ventricular arrhythmias such as ventricular tachycardia (VT) and ventricular fibrillation (VFIB) are life threatening. Hence, it is very important to detect features that can be used to differentiate between the two for reliable design of an ar ...
... heart is disturbed. Among various types of arrhythmias, ventricular arrhythmias such as ventricular tachycardia (VT) and ventricular fibrillation (VFIB) are life threatening. Hence, it is very important to detect features that can be used to differentiate between the two for reliable design of an ar ...
A histological study on the ventricle of convict cichlid, Amatitlania
... show a great variability in different fish. Depending on their shapes, the ventricle can be differentiated as pyramidal, tubular and saccular (Santer, 1985; Sánchez-Quintana et al., 1995; Simões et al., 2002). The pyramidal ventricles were reported in the members of Salmonidae and Scombridae (Farrel ...
... show a great variability in different fish. Depending on their shapes, the ventricle can be differentiated as pyramidal, tubular and saccular (Santer, 1985; Sánchez-Quintana et al., 1995; Simões et al., 2002). The pyramidal ventricles were reported in the members of Salmonidae and Scombridae (Farrel ...
Myxomatous mitral valve disease in dogs
... is no recommended treatment at this time that would prolong this asymptomatic period. At this stage, only periodic assessment is recommended in order to identify dogs that have a progression of the disease. B2 patients have mitral regurgitation and cardiomegaly, but no clinical signs. As mentioned a ...
... is no recommended treatment at this time that would prolong this asymptomatic period. At this stage, only periodic assessment is recommended in order to identify dogs that have a progression of the disease. B2 patients have mitral regurgitation and cardiomegaly, but no clinical signs. As mentioned a ...
Sonographic screening examination of the fetal heart
... apex of the heart. Both ventricles should appear similar in size and have no evidence of thickened walls. Although mild ventricular disproportion can occur as a normal variant in the third trimester of pregnancy, overt right–left asymmetry in midgestation warrants further examination56 ; left-sided ...
... apex of the heart. Both ventricles should appear similar in size and have no evidence of thickened walls. Although mild ventricular disproportion can occur as a normal variant in the third trimester of pregnancy, overt right–left asymmetry in midgestation warrants further examination56 ; left-sided ...
The Pacmaker document
... A cardiac Pacemaker is an implanted device that assists cardiac functions when the underlying pathologies make the intrinsic heartbeats low. The Pacemaker runs in either a programming mode or in one of operational modes. During programming, the programmer specifies the type of the operation mode in ...
... A cardiac Pacemaker is an implanted device that assists cardiac functions when the underlying pathologies make the intrinsic heartbeats low. The Pacemaker runs in either a programming mode or in one of operational modes. During programming, the programmer specifies the type of the operation mode in ...
instruction manual - University of South Alabama
... (tachycardia) cardiac output falls off dramatically. In the normal range (60-100 b/m) cardiac output is relatively independent of heart rate. In contrast to tachycardias generated by an ectopic focus as in the above example, tachycardia resulting from sympathetic stimulation is well tolerated becaus ...
... (tachycardia) cardiac output falls off dramatically. In the normal range (60-100 b/m) cardiac output is relatively independent of heart rate. In contrast to tachycardias generated by an ectopic focus as in the above example, tachycardia resulting from sympathetic stimulation is well tolerated becaus ...
Cardiac Biomechanics
... review see Streeter) [7]. Although the myocytes are relatively short, they are connected such that at any point in the normal heart wall there is a clear predominant fiber axis that is approximately tangent with the wall (within 3 to 5◦ in most regions, except near the apex and papillary muscle inse ...
... review see Streeter) [7]. Although the myocytes are relatively short, they are connected such that at any point in the normal heart wall there is a clear predominant fiber axis that is approximately tangent with the wall (within 3 to 5◦ in most regions, except near the apex and papillary muscle inse ...
Ventricular haemodynamics in Python molurus: separation of
... of flow separation between the systemic and pulmonary circulations (Wang et al., 2002). During in situ perfusion, right atrial inflow was predominantly directed to the pulmonary circulation, whereas left atrial inflow was directed primarily to the systemic circulation, suggesting that inflows from t ...
... of flow separation between the systemic and pulmonary circulations (Wang et al., 2002). During in situ perfusion, right atrial inflow was predominantly directed to the pulmonary circulation, whereas left atrial inflow was directed primarily to the systemic circulation, suggesting that inflows from t ...
Ventricular haemodynamics in Python molurus: separation of
... of flow separation between the systemic and pulmonary circulations (Wang et al., 2002). During in situ perfusion, right atrial inflow was predominantly directed to the pulmonary circulation, whereas left atrial inflow was directed primarily to the systemic circulation, suggesting that inflows from t ...
... of flow separation between the systemic and pulmonary circulations (Wang et al., 2002). During in situ perfusion, right atrial inflow was predominantly directed to the pulmonary circulation, whereas left atrial inflow was directed primarily to the systemic circulation, suggesting that inflows from t ...
File
... 79- which one of the following statements is true about heart sounds a- 1st heart sound is heard during the T wave b- 2nd heart sound is heard during the S wave c- both heart sounds occur during the isovolumic contraction d- 2nd heat sound is heard during the isovolumic relaxation e- these sounds ar ...
... 79- which one of the following statements is true about heart sounds a- 1st heart sound is heard during the T wave b- 2nd heart sound is heard during the S wave c- both heart sounds occur during the isovolumic contraction d- 2nd heat sound is heard during the isovolumic relaxation e- these sounds ar ...
5 rIGHt VentrIcular PacInG ImProVes rIGHt Heart FunctIon In
... a consequence, time-to-peak shortening of the RV free wall is delayed, even beyond closure of the pulmonary valves.5,6,8 Loss of a coordinated ventricular contraction results in impaired RV systolic function.8,9 In addition, the prolonged RV contraction in early left ventricular (LV) diastole causes ...
... a consequence, time-to-peak shortening of the RV free wall is delayed, even beyond closure of the pulmonary valves.5,6,8 Loss of a coordinated ventricular contraction results in impaired RV systolic function.8,9 In addition, the prolonged RV contraction in early left ventricular (LV) diastole causes ...
The Management of Patients with Premature Ventricular Contractions
... It is essential that patients have a baseline monitoring or exercise study (whichever demonstrated the PVCs) prior to therapy and again after institution of therapy in conjunction with blood levels of the drug, when available, to evaluate the effectiveness of the antiarrhythmic therapy. It also shou ...
... It is essential that patients have a baseline monitoring or exercise study (whichever demonstrated the PVCs) prior to therapy and again after institution of therapy in conjunction with blood levels of the drug, when available, to evaluate the effectiveness of the antiarrhythmic therapy. It also shou ...
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.