EСG
... will usually be “upside down” by comparison. This means that every electrical wave in lead R should have a net negative direction, unless pathology is present. ...
... will usually be “upside down” by comparison. This means that every electrical wave in lead R should have a net negative direction, unless pathology is present. ...
International Cardiovascular Research Journal
... against PMV during pregnancy. Doses in excess of 50 to 100 milliSievert increase the incidence of fetal malformation. However, only a small amount of the radiation delivered on the thorax reaches the fetus. Shielding the gravid uterus is of limited value, since this will not prevent internal radiati ...
... against PMV during pregnancy. Doses in excess of 50 to 100 milliSievert increase the incidence of fetal malformation. However, only a small amount of the radiation delivered on the thorax reaches the fetus. Shielding the gravid uterus is of limited value, since this will not prevent internal radiati ...
Failure to precondition pathological human myocardium
... kinase C (PKC) to initiate an intracellular signal transduction pathway. Protein kinase C may activate a tyrosine kinase, which in turn activates mitogen-activated protein or c-Jun-N-terminal kinases (JNK) kinases leading to phosphorylation of KATP channels (1). There is convincing evidence in the l ...
... kinase C (PKC) to initiate an intracellular signal transduction pathway. Protein kinase C may activate a tyrosine kinase, which in turn activates mitogen-activated protein or c-Jun-N-terminal kinases (JNK) kinases leading to phosphorylation of KATP channels (1). There is convincing evidence in the l ...
Cardiac MRI evaluation of myocardial disease
... diagnosis and management of patients with myocardial abnormalities and functional impairment as has been achieved for patients with acute coronary events. Myocardial damage is the end result of all cardiac disease, but there is increasing recognition that the myocardial response to a given insult or ...
... diagnosis and management of patients with myocardial abnormalities and functional impairment as has been achieved for patients with acute coronary events. Myocardial damage is the end result of all cardiac disease, but there is increasing recognition that the myocardial response to a given insult or ...
Differential Prognostic Impacts of Diabetes over Time Course after
... mined by 2-dimensional echocardiography. The Killip classification was applied based on the presence of heart failure, acute pulmonary edema and shock at initial admission (15). Blood samples for baseline laboratory tests other than lipid measurement were collected at admission before initial treatm ...
... mined by 2-dimensional echocardiography. The Killip classification was applied based on the presence of heart failure, acute pulmonary edema and shock at initial admission (15). Blood samples for baseline laboratory tests other than lipid measurement were collected at admission before initial treatm ...
PDF file - Via Medica Journals
... angina-equivalent symptoms with positive results from either a treadmill test or a myocardial perfusion study. Demographic, clinical, and laboratory characteristics of the study groups, which were taken from each patient’s history and physical examination, were recorded by systematic review of the p ...
... angina-equivalent symptoms with positive results from either a treadmill test or a myocardial perfusion study. Demographic, clinical, and laboratory characteristics of the study groups, which were taken from each patient’s history and physical examination, were recorded by systematic review of the p ...
Full Text:PDF - The Turkish Journal of Pediatrics
... echocardiograms should be performed until the hematoma is stabilized and periodically thereafter until it has resolved. If it enlarges, or causes any other serious complications, such as ventricular outflow tract obstruction, the hematoma should be evacuated. An IVSH can cause ventricular dysfunctio ...
... echocardiograms should be performed until the hematoma is stabilized and periodically thereafter until it has resolved. If it enlarges, or causes any other serious complications, such as ventricular outflow tract obstruction, the hematoma should be evacuated. An IVSH can cause ventricular dysfunctio ...
Myocardial hypertrophy and its role in heart failure with preserved
... strain may even occur before LVH manifestation (25). The increase in radial strain may dissipate during the progression of LVH (58). In HFpEF, LVH is associated with a higher degree of spatial heterogeneity in longitudinal strain at rest (100) and even more pronounced dyssynchrony in regional contra ...
... strain may even occur before LVH manifestation (25). The increase in radial strain may dissipate during the progression of LVH (58). In HFpEF, LVH is associated with a higher degree of spatial heterogeneity in longitudinal strain at rest (100) and even more pronounced dyssynchrony in regional contra ...
Cardiovascular Protection Using Beta-Blockers
... Given the data from previous studies showing detrimental effects of new-onset diabetes, the long-term atherogenic potential of diabetes, whether primary or secondary (to medications), cannot and should not be ignored. Nevertheless, the economic consequences of management of a chronic condition like ...
... Given the data from previous studies showing detrimental effects of new-onset diabetes, the long-term atherogenic potential of diabetes, whether primary or secondary (to medications), cannot and should not be ignored. Nevertheless, the economic consequences of management of a chronic condition like ...
Effects of exercise training on left ventricular structure and function in
... hypertension.[1] When analyzed by group assignment, there were no training effects on any measured cardiac parameter. This is also the first study in adults in which cardiac parameters, fitness, body composition, BP, and insulin resistance was studied simultaneously. When examining individual respon ...
... hypertension.[1] When analyzed by group assignment, there were no training effects on any measured cardiac parameter. This is also the first study in adults in which cardiac parameters, fitness, body composition, BP, and insulin resistance was studied simultaneously. When examining individual respon ...
3t labeling b
... prolonged QRS duration. Left bundle branch block (LBBB) with a QRS duration ≥ 130 ms, left ventricular ejection fraction ≤ 30%, and NYHA Functional Class II. NYHA Functional Class I, II, or III and who have left ventricular ejection fraction ≤ 50% and atrioventricular block (AV block) that are expec ...
... prolonged QRS duration. Left bundle branch block (LBBB) with a QRS duration ≥ 130 ms, left ventricular ejection fraction ≤ 30%, and NYHA Functional Class II. NYHA Functional Class I, II, or III and who have left ventricular ejection fraction ≤ 50% and atrioventricular block (AV block) that are expec ...
Aortic Valve Bypass: A Case Summary and Discussion
... levels between 120 and 150 mg/dL. Glucose levels were checked every 30 minutes. The valve conduit was connected from the descending thoracic aorta to the apex of the left ventricle successfully. Once the valve conduit was connected, the cardiac index increased from 1.9 L/min/ m2 to 3 L/min/m2 and m ...
... levels between 120 and 150 mg/dL. Glucose levels were checked every 30 minutes. The valve conduit was connected from the descending thoracic aorta to the apex of the left ventricle successfully. Once the valve conduit was connected, the cardiac index increased from 1.9 L/min/ m2 to 3 L/min/m2 and m ...
Task Force 6: Training in Specialized Electrophysiology, Cardiac
... taught on a regular basis during formal electrocardiogram (ECG) conferences. Additional experience in heart rhythm disorders and clinical correlations can be obtained from didactic sessions and conferences; however, they must be supplemented by rotation on an arrhythmia consultation service, during ...
... taught on a regular basis during formal electrocardiogram (ECG) conferences. Additional experience in heart rhythm disorders and clinical correlations can be obtained from didactic sessions and conferences; however, they must be supplemented by rotation on an arrhythmia consultation service, during ...
Fully reversible pulmonary arterial hypertension
... treatment, the alternate TKI nilotinib was started at a dose of 400 mg b.i.d. Subsequently, repeat noninvasive evaluations showed normalisation of all measured parameters, such that targeted PAH therapy with sildenafil was stopped after 6 months. A third right-heart catheterisation was performed 2 w ...
... treatment, the alternate TKI nilotinib was started at a dose of 400 mg b.i.d. Subsequently, repeat noninvasive evaluations showed normalisation of all measured parameters, such that targeted PAH therapy with sildenafil was stopped after 6 months. A third right-heart catheterisation was performed 2 w ...
Cardiopulmonary resuscitation dr. Horáček
... • ventilation = important in asphyxial cardiac arr. • 5 initial breaths, f 12-20/min, Vt according to chest rise, normoventilation • if unwilling to breathe, then hands-only CPR better • external chest compressions: – in lower half of sternum! – depth at least by 1/3 of the chest height – frequency ...
... • ventilation = important in asphyxial cardiac arr. • 5 initial breaths, f 12-20/min, Vt according to chest rise, normoventilation • if unwilling to breathe, then hands-only CPR better • external chest compressions: – in lower half of sternum! – depth at least by 1/3 of the chest height – frequency ...
The role of endomyocardial biopsy in the management of
... experience of the operator, clinical status of the patient, presence or absence of left bundle-branch block, access site, and possibly bioptome. The use of a long sheath that crosses the tricuspid valve may decrease the risk of bioptome-induced tricuspid valve trauma. Delayed complications include a ...
... experience of the operator, clinical status of the patient, presence or absence of left bundle-branch block, access site, and possibly bioptome. The use of a long sheath that crosses the tricuspid valve may decrease the risk of bioptome-induced tricuspid valve trauma. Delayed complications include a ...
Constrictive Pericarditis with Atrial Septal Defect
... with sinus rhythm spontaneously after releasing the aortic cross-clamp, and the weaning from cardiopulmonary bypass was smooth. A right side pericardiectomy was then performed. The cardiopulmonary bypass time was 104 minutes and the aortic cross-clamp time was 46 minutes. A blood transfusion was not ...
... with sinus rhythm spontaneously after releasing the aortic cross-clamp, and the weaning from cardiopulmonary bypass was smooth. A right side pericardiectomy was then performed. The cardiopulmonary bypass time was 104 minutes and the aortic cross-clamp time was 46 minutes. A blood transfusion was not ...
Electrophysiology and Anatomy of Embryonic Rabbit - AJP
... neurofilament 160 (NF-160). Previous work suggested that ventricular septation correlates with critical phases in avian CPCS development, in contrast to the mouse CPCS. Combining high resolution optical mapping with immunohistochemical analysis of the embryonic rabbit heart, we investigated the sign ...
... neurofilament 160 (NF-160). Previous work suggested that ventricular septation correlates with critical phases in avian CPCS development, in contrast to the mouse CPCS. Combining high resolution optical mapping with immunohistochemical analysis of the embryonic rabbit heart, we investigated the sign ...
A Complex Congenital Case
... main pulmonary arterial atresia. In the mildest forms the main pulmonary and branch pulmonary arteries are of normal caliber and pulmonary blood flow is supplied by a tortuous PDA or by major aortopulmonary collaterals (MAPCAs). In the most severe forms the branch pulmonary arteries are discontinuou ...
... main pulmonary arterial atresia. In the mildest forms the main pulmonary and branch pulmonary arteries are of normal caliber and pulmonary blood flow is supplied by a tortuous PDA or by major aortopulmonary collaterals (MAPCAs). In the most severe forms the branch pulmonary arteries are discontinuou ...
The small giraffe heart normalises ventricular wall tension, but
... high intraventricular blood pressure by having a lower left ventricular radius and a thicker ventricular wall (Mitchell and Skinner, 2009). This can be achieved by a typical mammalian heart mass relative to body mass, but must entail a lower stroke volume (SV) per unit of cardiac mass than in simila ...
... high intraventricular blood pressure by having a lower left ventricular radius and a thicker ventricular wall (Mitchell and Skinner, 2009). This can be achieved by a typical mammalian heart mass relative to body mass, but must entail a lower stroke volume (SV) per unit of cardiac mass than in simila ...
Supraventricular Arrhythmias
... electrical impulse propagates down the normal His Purkinje system similar to normal sinus rhythm • Distinct from ventricular tachycardia which only originates in the ventricles ...
... electrical impulse propagates down the normal His Purkinje system similar to normal sinus rhythm • Distinct from ventricular tachycardia which only originates in the ventricles ...
PDF file
... with STEMI within 24 hours and thereafter up-titrate treatment during and after hospitalization as tolerated(2, 3). The role of IV beta-blocker therapy is more controversial and less clear. IV beta-blockade was studied nearly 40 years ago in animal models(4). Shortly thereafter, Hjalmarson et. al. r ...
... with STEMI within 24 hours and thereafter up-titrate treatment during and after hospitalization as tolerated(2, 3). The role of IV beta-blocker therapy is more controversial and less clear. IV beta-blockade was studied nearly 40 years ago in animal models(4). Shortly thereafter, Hjalmarson et. al. r ...
Bundle Branch Block and Benefit from Cardiac Resynchronization
... Since CRT aims at correcting the delay in activation between the LV septal and LV free wall, the presence of a truly significant delay between both walls is necessary for CRT to exert its benefits. The most ideal example of such a delay is LBBB, in which the LV septum is activated approximately 100 ...
... Since CRT aims at correcting the delay in activation between the LV septal and LV free wall, the presence of a truly significant delay between both walls is necessary for CRT to exert its benefits. The most ideal example of such a delay is LBBB, in which the LV septum is activated approximately 100 ...
Cardiac contractility modulation
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Cardiac contractility modulation (CCM) is a treatment for patients with moderate to severe left ventricular systolic heart failure (NYHA class II–IV). The short- and long-term use of this therapy enhances both the strength of ventricular contraction and the heart’s pumping capacity. The CCM mechanism is based on stimulation of the cardiac muscle by non-excitatory electrical signals (NES). CCM treatment is delivered by a pacemaker-like device that applies the NES, adjusted to and synchronized with the electrical action in the cardiac cycle.In CCM therapy, electrical stimulation is applied to the cardiac muscle during the absolute refractory period. In this phase of the cardiac cycle, electrical signals cannot trigger new cardiac muscle contractions, hence this type of stimulation is known as a non-excitatory stimulation. However, the electrical CCM signals increase the influx of calcium ions into the cardiac muscle cells (cardiomyocytes). In contrast to other electrical stimulation treatments for heart failure, such as pacemaker therapy or implantable cardioverter defibrillators (ICD), CCM does not affect the cardiac rhythm directly. Rather, the aim is to enhance the heart’s natural contraction (the native cardiac contractility) sustainably over long periods of time. Furthermore, unlike most interventions that increase cardiac contractility, CCM is not associated with an unfavorable increase in oxygen demand by the heart (measured in terms of Myocardial Oxygen Consumption or MVO2). This may be explained by the beneficial effect CCM has in improving cardiac efficiency. A meta-analysis in 2014 and an overview of device-based treatment options in heart failure in 2013 concluded that CCM treatment is safe, that it is generally beneficial to patients and that CCM treatment increases the exercise tolerance (ET) and quality of life (QoL) of patients. Furthermore, preliminary long-term survival data shows that CCM is associated with lower long-term mortality in heart failure patients when compared with expected rates among similar patients not treated with CCM.