Impact of Longitudinal Myocardial Deformation on the Prognosis of
... processing algorithm based on speckle tracking analysis has recently been developed. Several studies reported that regional strain amplitude derived from speckle tracking correlates with sonomicrometry and MRI strain measurements.12,13 In the present study, strain curves from the 16 segments were av ...
... processing algorithm based on speckle tracking analysis has recently been developed. Several studies reported that regional strain amplitude derived from speckle tracking correlates with sonomicrometry and MRI strain measurements.12,13 In the present study, strain curves from the 16 segments were av ...
Increases in serum levels of troponin I are associated
... in children with septic shock. Wall stress analysis and ejection phase indexes allow for accurate assessments of ventricular systolic performance. Serial echocardiograms in pediatric patients with septic shock demonstrate intrinsic ventricular dysfunction in the majority of patients despite adequate ...
... in children with septic shock. Wall stress analysis and ejection phase indexes allow for accurate assessments of ventricular systolic performance. Serial echocardiograms in pediatric patients with septic shock demonstrate intrinsic ventricular dysfunction in the majority of patients despite adequate ...
Bicuspid Aortic Valve and Aortopathy: See the First, Then Look at
... associated with valve stenosis and the AP phenotype with regurgitation, this should be considered a hypothesis, not a conclusion. All the subjects in this study were referred for preoperative CTA; thus, all had significant valve dysfunction and/or aortic dilation and should not be considered represe ...
... associated with valve stenosis and the AP phenotype with regurgitation, this should be considered a hypothesis, not a conclusion. All the subjects in this study were referred for preoperative CTA; thus, all had significant valve dysfunction and/or aortic dilation and should not be considered represe ...
Unusual Site of Origin of a Non-Automatic Focal Right Ventricular
... not be induced. Accessory pathways, dual atrioventricular nodal physiology, and atrial tachycardias were excluded. She was discharged on amiodarone as an implantable cardioverter-defibrillator (ICD) was an unavailable option at that time. Five years later the patient was switched over to propafenone ...
... not be induced. Accessory pathways, dual atrioventricular nodal physiology, and atrial tachycardias were excluded. She was discharged on amiodarone as an implantable cardioverter-defibrillator (ICD) was an unavailable option at that time. Five years later the patient was switched over to propafenone ...
Pulmonary veno-occlusive disease in myeloproliferative disorder CASE STUDY
... hypertension remained undetermined and aggressive treatment of the underlying haematological disease did not modify the course of pulmonary hypertension [3]. Although suspected, the presence of PVOD was, until now, not formally confirmed in patients with chronic myeloproliferative disorder in the ab ...
... hypertension remained undetermined and aggressive treatment of the underlying haematological disease did not modify the course of pulmonary hypertension [3]. Although suspected, the presence of PVOD was, until now, not formally confirmed in patients with chronic myeloproliferative disorder in the ab ...
The Significance of Pulmonary Artery Size in Pulmonary Hypertension
... transpulmonary pressure gradient. The factors that determine the size of a vessel depend on several physiologic variables and any underlying pathology. Fundamentally, it is the volume of blood within the PA that relates to the size of the PA as measured on the CT, with the indirect factors of pressu ...
... transpulmonary pressure gradient. The factors that determine the size of a vessel depend on several physiologic variables and any underlying pathology. Fundamentally, it is the volume of blood within the PA that relates to the size of the PA as measured on the CT, with the indirect factors of pressu ...
Effects of Nitroprusside on Venous Return and Central
... dogs using a right-heart bypass preparation at constant total blood volume. Experiments were performed before and after the production of acute left ventricular failure. During control, nitroprusside infusion shifted the venous return curve, with a reduction in its plateau (3.1 to 2.4 l/min;p < 0.00 ...
... dogs using a right-heart bypass preparation at constant total blood volume. Experiments were performed before and after the production of acute left ventricular failure. During control, nitroprusside infusion shifted the venous return curve, with a reduction in its plateau (3.1 to 2.4 l/min;p < 0.00 ...
The association between apelin
... The baseline characteristic properties of study patients are summarized in Table 1. There were no significant differences among the three groups with respect to sex distribution, age, frequencies of major coronary risk factors (i.e., diabetes mellitus, hypertension, dyslipidemia, smoking, family his ...
... The baseline characteristic properties of study patients are summarized in Table 1. There were no significant differences among the three groups with respect to sex distribution, age, frequencies of major coronary risk factors (i.e., diabetes mellitus, hypertension, dyslipidemia, smoking, family his ...
Implantable Cardioverter Defibrillator
... The automatic implantable cardioverter defibrillator (ICD) is a device designed to monitor a patient’s heart rate, recognize ventricular fibrillation or ventricular tachycardia, and deliver an electric shock to terminate these arrhythmias to reduce the risk of sudden death. A subcutaneous ICD (S-ICD ...
... The automatic implantable cardioverter defibrillator (ICD) is a device designed to monitor a patient’s heart rate, recognize ventricular fibrillation or ventricular tachycardia, and deliver an electric shock to terminate these arrhythmias to reduce the risk of sudden death. A subcutaneous ICD (S-ICD ...
Evidence for Caution: Women and statin use
... There are significant differences in the way heart disease manifests in men and women. Women experience different symptoms that span a wider range. Women’s heart attack symptoms are less likely to be recognized and less likely to be acted on by women themselves and by healthcare workers.1 Women may ...
... There are significant differences in the way heart disease manifests in men and women. Women experience different symptoms that span a wider range. Women’s heart attack symptoms are less likely to be recognized and less likely to be acted on by women themselves and by healthcare workers.1 Women may ...
DOI: 10.1161/CIRCULATIONAHA.108.808907 published online Oct
... shortage, the inclusion of older, marginal, and nonbeating heart organ sources in the donor pool.2 Use of organs from marginal and older donors has resulted in decreased graft function and survival compared with organs obtained and used for transplantation from younger donors in previous years.3 Pre ...
... shortage, the inclusion of older, marginal, and nonbeating heart organ sources in the donor pool.2 Use of organs from marginal and older donors has resulted in decreased graft function and survival compared with organs obtained and used for transplantation from younger donors in previous years.3 Pre ...
Absent Pulmonary Valve Syndrome
... etc. Such problems may cause sever obstruction to blood flow to the lungs or into the main circulation and may require urgent surgery. The RV (usually very small) may be on the opposite side of the heart to normal. This is similar in some respects to the situation with Corrected Transposition. Treat ...
... etc. Such problems may cause sever obstruction to blood flow to the lungs or into the main circulation and may require urgent surgery. The RV (usually very small) may be on the opposite side of the heart to normal. This is similar in some respects to the situation with Corrected Transposition. Treat ...
cardiac output in man by a direct fick method
... The observations were made on normal male volunteers about two hours after the midday meal. The subjects were supine, except where otherwise stated. A No. 12 radio-opaque ureteric catheter was introduced through a wide bore needle into the medial antecubital vein of the left arm. The introduction wa ...
... The observations were made on normal male volunteers about two hours after the midday meal. The subjects were supine, except where otherwise stated. A No. 12 radio-opaque ureteric catheter was introduced through a wide bore needle into the medial antecubital vein of the left arm. The introduction wa ...
Increased HR →Decreased SV Increased Contractility → Decreased
... Q: Contractility vs. Force of Contraction, are they the same? Contractility measures how much Ca++ is available INTRA-cellularly. Force of contraction measures the length of the cardiac sarcomere and how close it is to the optimal length. Inotropic change is thus related to contractility, not to for ...
... Q: Contractility vs. Force of Contraction, are they the same? Contractility measures how much Ca++ is available INTRA-cellularly. Force of contraction measures the length of the cardiac sarcomere and how close it is to the optimal length. Inotropic change is thus related to contractility, not to for ...
Arrhythmia - PACT
... Single-lead monitoring may make detection of ECG components (such as the P wave) difficult if axis/rhythm alters Single-lead monitoring may not demonstrate changes in ST-segments in an (unmonitored) ischaemic zone Monitoring patients nursed in the prone position Arrhythmia detection software may lac ...
... Single-lead monitoring may make detection of ECG components (such as the P wave) difficult if axis/rhythm alters Single-lead monitoring may not demonstrate changes in ST-segments in an (unmonitored) ischaemic zone Monitoring patients nursed in the prone position Arrhythmia detection software may lac ...
Peter Kokkinos Cardiorespiratory Fitness, Exercise, and Blood
... factors.45,46 The most pronounced reduction in risk (40%) was observed in low-fit individuals (peak MET level 6.1–8.0) compared with the least-fit (peak MET level ≤6.0), suggesting that relatively low levels of cardiorespiratory fitness are necessary for exercise-related health benefits. Risk reduct ...
... factors.45,46 The most pronounced reduction in risk (40%) was observed in low-fit individuals (peak MET level 6.1–8.0) compared with the least-fit (peak MET level ≤6.0), suggesting that relatively low levels of cardiorespiratory fitness are necessary for exercise-related health benefits. Risk reduct ...
Mechanisms for increasing stroke volume during static exercise with
... have dual-chamber (right atrium and right ventricle) pacing and sensing pacemakers have been studied previously (1). When the patients exercised with the sensing feature of the pacemakers turned off and static exercise was performed with the HR fixed, SV increased and compensated for the lack of a c ...
... have dual-chamber (right atrium and right ventricle) pacing and sensing pacemakers have been studied previously (1). When the patients exercised with the sensing feature of the pacemakers turned off and static exercise was performed with the HR fixed, SV increased and compensated for the lack of a c ...
patient clinical summary
... place in the heart, lead breaking, lead infections, lead not being connected to the device the right way) Risks: The Micra clinical study showed risks of the Micra pacemaker were unncommon. Risks with Micra include some of the same risks as traditional pacemakers, such as: § Puncture of your heart ...
... place in the heart, lead breaking, lead infections, lead not being connected to the device the right way) Risks: The Micra clinical study showed risks of the Micra pacemaker were unncommon. Risks with Micra include some of the same risks as traditional pacemakers, such as: § Puncture of your heart ...
New Trends in Steroids and Image Enhancing Drugs
... “The other potential loss of credibility is we are telling people that they are going to be dropping over dead and the athletes are looking at the longtime user and not seeing people dropping like flies. Now, increased death, probability of death, or morbidity could be taking place, but people are ...
... “The other potential loss of credibility is we are telling people that they are going to be dropping over dead and the athletes are looking at the longtime user and not seeing people dropping like flies. Now, increased death, probability of death, or morbidity could be taking place, but people are ...
Atrial Fibrillation - St. Joseph`s Healthcare Hamilton
... from many different areas within the atria or upper chambers, especially the pulmonary veins. These signals are disorganized and rapid. This causes your heart to beat fast and unevenly. Atrial fibrillation is also called AF or A fib. There are 3 types of atrial fibrillation: • Paroxysmal: This is an ...
... from many different areas within the atria or upper chambers, especially the pulmonary veins. These signals are disorganized and rapid. This causes your heart to beat fast and unevenly. Atrial fibrillation is also called AF or A fib. There are 3 types of atrial fibrillation: • Paroxysmal: This is an ...
CASE REPORT Usefulness of central venous oxygen saturation
... oxygen saturation (SvO2) (6). As ScvO2 depends on the cardiac output/hemoglobin level/arterial blood oxygen saturation involved in oxygen transport, as well as metabolism involved in oxygen consumption, continuous monitoring of the oxygen demand/supply balance is possible (7). A study performed a pr ...
... oxygen saturation (SvO2) (6). As ScvO2 depends on the cardiac output/hemoglobin level/arterial blood oxygen saturation involved in oxygen transport, as well as metabolism involved in oxygen consumption, continuous monitoring of the oxygen demand/supply balance is possible (7). A study performed a pr ...
experimental studies on the circulatory system of the late chick embryo
... stage 43 (Hamburger & Hamilton, 1951) showing little or no reflex reaction in response to the operative procedures involved. This was not the case with older embryos and was one of the reasons which militated against their use, another being that the imbilical and vitelline blood vessels of such emb ...
... stage 43 (Hamburger & Hamilton, 1951) showing little or no reflex reaction in response to the operative procedures involved. This was not the case with older embryos and was one of the reasons which militated against their use, another being that the imbilical and vitelline blood vessels of such emb ...
Influence of exercise training on cardiac baroreflex sensitivity in
... Mechanisms of altered autonomic nervous system activity in pulmonary disease The reasons for decreased BRS in pulmonary disease are still unclear. PATAKAS et al. [6] found a negative relationship between pharmacological BRS and pulmonary arterial pressures. In the present study, cardiac echocardiogr ...
... Mechanisms of altered autonomic nervous system activity in pulmonary disease The reasons for decreased BRS in pulmonary disease are still unclear. PATAKAS et al. [6] found a negative relationship between pharmacological BRS and pulmonary arterial pressures. In the present study, cardiac echocardiogr ...
The Transport System - Aurora City Schools
... blood to the heart muscle itself. Several large arteries branch from the aorta, leading to the head, chests, and arms, and to the abdominal region and legs. Within each organ, arteries lead to arterioles that branch to capillaries. Capillaries rejoin as venules, which convey the blood back to veins. ...
... blood to the heart muscle itself. Several large arteries branch from the aorta, leading to the head, chests, and arms, and to the abdominal region and legs. Within each organ, arteries lead to arterioles that branch to capillaries. Capillaries rejoin as venules, which convey the blood back to veins. ...
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.