Construction of the Heart`s Conduction Tree via Prim`s Algorithm
... Abstract. The heart’s excitation is a complex process which is often modelled for several cases of applications. Realtime capability is often postulated but not guaranteed due to the huge amount of used cells. Therefore, in this paper an abstract conduction system was developed to reduce complexity. ...
... Abstract. The heart’s excitation is a complex process which is often modelled for several cases of applications. Realtime capability is often postulated but not guaranteed due to the huge amount of used cells. Therefore, in this paper an abstract conduction system was developed to reduce complexity. ...
A noninvasive algorithm to exclude pre-capillary pulmonary hypertension
... In the no pre-capillary PH group, 53 patients were diagnosed with post-capillary PH. Of those, 42 patients suffered from PH due to left ventricular diastolic dysfunction (34 with systemic arterial hypertension and 10 with significant coronary artery disease). Nine patients with post-capillary hypert ...
... In the no pre-capillary PH group, 53 patients were diagnosed with post-capillary PH. Of those, 42 patients suffered from PH due to left ventricular diastolic dysfunction (34 with systemic arterial hypertension and 10 with significant coronary artery disease). Nine patients with post-capillary hypert ...
Transcatheter Heart Valve Replacement - Hall
... asleep and then removed before you are awakened. We will place a temporary pacing wire in the heart so we can control the heart rhythm at various times during the TAVR procedure. This will be turned on and off at various times to allow us to implant the new valve in the perfect exact location withou ...
... asleep and then removed before you are awakened. We will place a temporary pacing wire in the heart so we can control the heart rhythm at various times during the TAVR procedure. This will be turned on and off at various times to allow us to implant the new valve in the perfect exact location withou ...
Introduction to CV Pathophysiology Introduction to Cardiovascular
... fraction is 67%+/- 8%. A ventricle that has suffered irreversible damage (e.g. after a myocardial infarction) typically has a depressed contractility. LVEF = Stroke volume / End diastolic volume Afterload is the force against which the heart has to pump. Ventricular wall stress best represents after ...
... fraction is 67%+/- 8%. A ventricle that has suffered irreversible damage (e.g. after a myocardial infarction) typically has a depressed contractility. LVEF = Stroke volume / End diastolic volume Afterload is the force against which the heart has to pump. Ventricular wall stress best represents after ...
PR_3_2012 po kor BK.vp:CorelVentura 7.0
... early dilation, as evaluated by left ventricular diastolic dimension four weeks after a high dose of isoproterenol. These results suggest that acute G-CSF can prevent the early structural changes leading to systolic dysfunction and heart failure development after catecholaminergic aggression. It wa ...
... early dilation, as evaluated by left ventricular diastolic dimension four weeks after a high dose of isoproterenol. These results suggest that acute G-CSF can prevent the early structural changes leading to systolic dysfunction and heart failure development after catecholaminergic aggression. It wa ...
Medical Milestones in Myocardial Infarction
... • Consultation was sought in 64% of patients although presenting features were typical, rather than atypical, in most patients • Consultation significantly delayed the administration of lytic therapy and was associated with increased hospital mortality • This study led to the empowerment of ED physi ...
... • Consultation was sought in 64% of patients although presenting features were typical, rather than atypical, in most patients • Consultation significantly delayed the administration of lytic therapy and was associated with increased hospital mortality • This study led to the empowerment of ED physi ...
Interleukin-6 Causes Myocardial Failure and Skeletal Muscle
... several in vitro experiments after administration of the aforementioned cytokines. First, cardiotrophin-1 was shown to induce a clear hypertrophic response in neonatal rat cardiac myocytes.19 Second, a direct negative inotropic effect on isolated hamster papillary muscle was exerted by IL-6, likely ...
... several in vitro experiments after administration of the aforementioned cytokines. First, cardiotrophin-1 was shown to induce a clear hypertrophic response in neonatal rat cardiac myocytes.19 Second, a direct negative inotropic effect on isolated hamster papillary muscle was exerted by IL-6, likely ...
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)
... Electrocardiography has been the main tool for the diagnosis of myocardial infarction since its invention. A significant Q wave (0.04 seconds or more in width and/or more than ¼ of proceeding R-wave in depth) indicates infarction Moreover, ECG helps to localize the site of infarction. The changes of ...
... Electrocardiography has been the main tool for the diagnosis of myocardial infarction since its invention. A significant Q wave (0.04 seconds or more in width and/or more than ¼ of proceeding R-wave in depth) indicates infarction Moreover, ECG helps to localize the site of infarction. The changes of ...
Manganese Superoxide Dismutase: Guardian of the Heart
... the aorta in aging rats secondary to high production of O2._ has also been demonstrated [18]. The decreased activity or inactivation of MnSOD leads to the accumulation of O2._ and peroxynitrite. The role of inducible nitric oxide synthase in increasing oxidative stress and increasing the risk of hea ...
... the aorta in aging rats secondary to high production of O2._ has also been demonstrated [18]. The decreased activity or inactivation of MnSOD leads to the accumulation of O2._ and peroxynitrite. The role of inducible nitric oxide synthase in increasing oxidative stress and increasing the risk of hea ...
Web Addenda - European Society of Cardiology
... Disclaimer. The ESC Guidelines represent the views of the ESC and were produced after careful consideration of the scientific and medical knowledge and the evidence available at the time of their publication. The ESC is not responsible in the event of any contradiction, discrepancy and/or ambiguity ...
... Disclaimer. The ESC Guidelines represent the views of the ESC and were produced after careful consideration of the scientific and medical knowledge and the evidence available at the time of their publication. The ESC is not responsible in the event of any contradiction, discrepancy and/or ambiguity ...
Unreliability of M-Mode Left Ventricular Dimensions for Calculating
... adults with no objective evidence of cardiac disease. In addition, single-dimension volume measurements have not been validated for other noncardiac patient groups, yet data based on the LVID method continue to be reported for patients with hypertension l7 and muscular dystrophy.18 The purpose of th ...
... adults with no objective evidence of cardiac disease. In addition, single-dimension volume measurements have not been validated for other noncardiac patient groups, yet data based on the LVID method continue to be reported for patients with hypertension l7 and muscular dystrophy.18 The purpose of th ...
Unreliability of M-Mode Left Ventricular Dimensions for Calculating
... adults with no objective evidence of cardiac disease. In addition, single-dimension volume measurements have not been validated for other noncardiac patient groups, yet data based on the LVID method continue to be reported for patients with hypertension l7 and muscular dystrophy.18 The purpose of th ...
... adults with no objective evidence of cardiac disease. In addition, single-dimension volume measurements have not been validated for other noncardiac patient groups, yet data based on the LVID method continue to be reported for patients with hypertension l7 and muscular dystrophy.18 The purpose of th ...
Right heart failure in the intensive care unit
... activation of endogenous proteases [6] or induction of apoptosis [7]. Whereas the RV can in some cases adapt to slowly rising pulmonary pressure, chronically elevated right-ventricular pressure more typically causes progressive adverse remodeling and right-ventricular contractile dysfunction [8]. Pr ...
... activation of endogenous proteases [6] or induction of apoptosis [7]. Whereas the RV can in some cases adapt to slowly rising pulmonary pressure, chronically elevated right-ventricular pressure more typically causes progressive adverse remodeling and right-ventricular contractile dysfunction [8]. Pr ...
Pulse pressure - Frank`s Hospital Workshop
... progressively increases while the diastolic remains about the same. In some very aerobically athletic individuals, for example distance runners, the diastolic will progressively fall as the systolic increases. This behavior facilitates a much greater increase in stroke volume and cardiac output at a ...
... progressively increases while the diastolic remains about the same. In some very aerobically athletic individuals, for example distance runners, the diastolic will progressively fall as the systolic increases. This behavior facilitates a much greater increase in stroke volume and cardiac output at a ...
Cardiac reserve mobilization trend during exercise and recovery
... may be used for rapid noninvasive detection of left ventricular systolic function is the first heart sound (S1). Previous studies have shown that there is a very close relationship between the amplitude of the first heart sound and cardiac contractility [6,7]. A study by Hansen et al. [7] showed tha ...
... may be used for rapid noninvasive detection of left ventricular systolic function is the first heart sound (S1). Previous studies have shown that there is a very close relationship between the amplitude of the first heart sound and cardiac contractility [6,7]. A study by Hansen et al. [7] showed tha ...
Full version (PDF file)
... type I and III (Weber 1989). Collagen type I (Col I) provides strength and rigidity, whereas tissues with large amount of collagen type III (Col III) are characterized by increased elasticity (Marijianowski et al. 1995). Recent studies showed that the different collagens accumulation is connected wi ...
... type I and III (Weber 1989). Collagen type I (Col I) provides strength and rigidity, whereas tissues with large amount of collagen type III (Col III) are characterized by increased elasticity (Marijianowski et al. 1995). Recent studies showed that the different collagens accumulation is connected wi ...
Hashimoto`s Thyroiditis
... of levothyroxine. Older patients who may have underlying heart disease are usually started on a low dose and gradually increased, while younger, healthy patients can be started on full replacement doses at once. Thyroid hormone acts very slowly in the body, so it may take several months after treatm ...
... of levothyroxine. Older patients who may have underlying heart disease are usually started on a low dose and gradually increased, while younger, healthy patients can be started on full replacement doses at once. Thyroid hormone acts very slowly in the body, so it may take several months after treatm ...
Assessment of the Morphologic Right Ventricular Function after the
... that the incidence of morphologic right ventricular dysfunction is increasing [2]. By forty-five years old, 56% of patients got SV dysfunction associated with VSD, morphologic TR and so on [3]. Abnormalities of the morphologic tricuspid valve have reportedly been observed in up to nine-tenths of pat ...
... that the incidence of morphologic right ventricular dysfunction is increasing [2]. By forty-five years old, 56% of patients got SV dysfunction associated with VSD, morphologic TR and so on [3]. Abnormalities of the morphologic tricuspid valve have reportedly been observed in up to nine-tenths of pat ...
Corrigan`s Disease
... uniformity" because Dr. Elliotson had used the former name for a similar state of the mitral valve. In a later paper2 in which he describes chronic fibrosis of the lung he shows the same consideration for the medical nomenclature; he uses the term cirrhosis of the Idng ("this disease is in the lung ...
... uniformity" because Dr. Elliotson had used the former name for a similar state of the mitral valve. In a later paper2 in which he describes chronic fibrosis of the lung he shows the same consideration for the medical nomenclature; he uses the term cirrhosis of the Idng ("this disease is in the lung ...
Ghsy4y\y45y45y5
... [K+]o. Period-2 rhythms occur when [K+]o is ~13 mM (Figs. 2,7B). In the pig ventricle, alternans has been detected 39 mins post-occlusion (Downar et al., 1977), during which time the average [K+]o in the central ischemic zone is ~711 mM (Hill and Gettes, 1980; Coronel et al., 1988). However, the m ...
... [K+]o. Period-2 rhythms occur when [K+]o is ~13 mM (Figs. 2,7B). In the pig ventricle, alternans has been detected 39 mins post-occlusion (Downar et al., 1977), during which time the average [K+]o in the central ischemic zone is ~711 mM (Hill and Gettes, 1980; Coronel et al., 1988). However, the m ...
Zimmermann WH, et al. Heart Muscle Engineering
... Nevertheless, stem cells seem to be the only meaningful cell source to allocate enough myocytes for clinically relevant cardiac muscle engineering in the future. One gram of adult myocardium contains an estimated number of 20– 40 million myocytes [47] and a typical myocardial infarction that induces ...
... Nevertheless, stem cells seem to be the only meaningful cell source to allocate enough myocytes for clinically relevant cardiac muscle engineering in the future. One gram of adult myocardium contains an estimated number of 20– 40 million myocytes [47] and a typical myocardial infarction that induces ...
ESC Guidelines on diabetes, pre-diabetes, and cardiovascular
... Disclaimer. The ESC Guidelines represent the views of the ESC and EASD and were arrived at after careful consideration of the available evidence at the time they were written. Health professionals are encouraged to take them fully into account when exercising their clinical judgement. The guidelines ...
... Disclaimer. The ESC Guidelines represent the views of the ESC and EASD and were arrived at after careful consideration of the available evidence at the time they were written. Health professionals are encouraged to take them fully into account when exercising their clinical judgement. The guidelines ...
ESC Guidelines on diabetes, pre-diabetes, and cardiovascular
... Disclaimer. The ESC Guidelines represent the views of the ESC and EASD and were arrived at after careful consideration of the available evidence at the time they were written. Health professionals are encouraged to take them fully into account when exercising their clinical judgement. The guidelines ...
... Disclaimer. The ESC Guidelines represent the views of the ESC and EASD and were arrived at after careful consideration of the available evidence at the time they were written. Health professionals are encouraged to take them fully into account when exercising their clinical judgement. The guidelines ...
Coronary artery disease
Coronary artery disease (CAD), also known as ischemic heart disease (IHD), atherosclerotic heart disease, atherosclerotic cardiovascular disease, and coronary heart disease, is a group of diseases that includes: stable angina, unstable angina, myocardial infarction, and sudden coronary death. It is within the group of cardiovascular diseases of which it is the most common type. A common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw. Occasionally it may feel like heartburn. Usually symptoms occur with exercise or emotional stress, last less than a few minutes, and gets better with rest. Shortness of breath may also occur and sometimes no symptoms are present. The first sign is occasionally a heart attack. Other complications include heart failure or an irregular heartbeat.Risk factors include: high blood pressure, smoking, diabetes, lack of exercise, obesity, high blood cholesterol, poor diet, and excessive alcohol, among others. Other risks include depression. The underlying mechanism involves atherosclerosis of the arteries of the heart. A number of tests may help with diagnoses including: electrocardiogram, cardiac stress testing, coronary computed tomographic angiography, and coronary angiogram, among others.Prevention is by eating a healthy diet, regular exercise, maintaining a healthy weight and not smoking. Sometimes medication for diabetes, high cholesterol, or high blood pressure are also used. There is limited evidence for screening people who are at low risk and do not have symptoms. Treatment involves the same measures as prevention. Additional medications such as antiplatelets including aspirin, beta blockers, or nitroglycerin may be recommended. Procedures such as percutaneous coronary intervention (PCI) or coronary artery bypass surgery (CABG) may be used in severe disease. In those with stable CAD it is unclear if PCI or CABG in addition to the other treatments improve life expectancy or decreases heart attack risk.In 2013 CAD was the most common cause of death globally, resulting in 8.14 million deaths (16.8%) up from 5.74 million deaths (12%) in 1990. The risk of death from CAD for a given age has decreased between 1980 and 2010 especially in the developed world. The number of cases of CAD for a given age has also decreased between 1990 and 2010. In the United States in 2010 about 20% of those over 65 had CAD, while it was present in 7% of those 45 to 64, and 1.3% of those 18 to 45. Rates are higher among men than women of a given age.