The Heart
... fibers •Blood is ejected from the ventricles to the aorta and pulmonary trunk as the ventricles contract © 2012 Pearson Education, Inc. ...
... fibers •Blood is ejected from the ventricles to the aorta and pulmonary trunk as the ventricles contract © 2012 Pearson Education, Inc. ...
ventricular septal defect (VSD)
... interatrial septum is a small atrial septal defect, as seen in this heart opened on the right side. Here the defect is not closed by the septum secundum, so a shunt exists across from left to right. ...
... interatrial septum is a small atrial septal defect, as seen in this heart opened on the right side. Here the defect is not closed by the septum secundum, so a shunt exists across from left to right. ...
Electroanatomical Mapping Systems and Cardiac Arrhythmias
... electroanatomical mapping system. The right atrium was reconstructed in its tridimensional shape and is showed in anteroposterior view (panel A), right anterior oblique (RAO) view (panel B) and left anterior oblique (LAO) view (panel C). During the procedure the image of the chamber of interest can ...
... electroanatomical mapping system. The right atrium was reconstructed in its tridimensional shape and is showed in anteroposterior view (panel A), right anterior oblique (RAO) view (panel B) and left anterior oblique (LAO) view (panel C). During the procedure the image of the chamber of interest can ...
Surgical Heart Valve Portfolio
... Contour 3D Annuloplasty Ring Indications: The Contour 3D ring is indicated for the reconstruction and/or remodeling of pathological tricuspid valves. Contraindications: Heavily calcified valves, valvular retraction with severely reduced mobility, active bacterial endocarditis. Warnings/Precautions/A ...
... Contour 3D Annuloplasty Ring Indications: The Contour 3D ring is indicated for the reconstruction and/or remodeling of pathological tricuspid valves. Contraindications: Heavily calcified valves, valvular retraction with severely reduced mobility, active bacterial endocarditis. Warnings/Precautions/A ...
Chronic Care Programme
... (normal fluid level in the circulatory system), and to improve prognosis by delaying progression of heart failure and reducing cardiovascular risk. Drugs used include: diuretic agents, vasodilator agents, positive inotropes, ACE inhibitors, beta blockers, and aldosterone antagonists (e.g. spironolac ...
... (normal fluid level in the circulatory system), and to improve prognosis by delaying progression of heart failure and reducing cardiovascular risk. Drugs used include: diuretic agents, vasodilator agents, positive inotropes, ACE inhibitors, beta blockers, and aldosterone antagonists (e.g. spironolac ...
Echotech Reporting Guidelines
... • > 25% drop in mitral inflow E wave with inspiration • > 25% rise in tricuspid inflow E wave with inspiration • > 25% drop in subaortic outflow with inspiration ...
... • > 25% drop in mitral inflow E wave with inspiration • > 25% rise in tricuspid inflow E wave with inspiration • > 25% drop in subaortic outflow with inspiration ...
Bottle feeding
... occur when the heart muscle contracts; diastolic murmurs occur when the heart muscle relaxes between beats; and continuous and to-and-fro murmurs occur throughout all or most of the cardiac cycle. Symptoms and Types The symptoms associated with murmurs depend on a variety of characteristics, includi ...
... occur when the heart muscle contracts; diastolic murmurs occur when the heart muscle relaxes between beats; and continuous and to-and-fro murmurs occur throughout all or most of the cardiac cycle. Symptoms and Types The symptoms associated with murmurs depend on a variety of characteristics, includi ...
The examination of the normal fetal heart using two
... Ultrasound techniques used in fetal cardiology are numerous. They include different approaches such as two-dimensional examination by the transabdominal or transvaginal route (in early pregnancy), the M-mode examination, and the different methods based on Doppler (e.g. pulsed Doppler, color Doppler, ...
... Ultrasound techniques used in fetal cardiology are numerous. They include different approaches such as two-dimensional examination by the transabdominal or transvaginal route (in early pregnancy), the M-mode examination, and the different methods based on Doppler (e.g. pulsed Doppler, color Doppler, ...
Guidelines ARVD New Criteria Circ 2010
... Background—In 1994, an International Task Force proposed criteria for the clinical diagnosis of arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D) that facilitated recognition and interpretation of the frequently nonspecific clinical features of ARVC/D. This enabled confirmatory clin ...
... Background—In 1994, an International Task Force proposed criteria for the clinical diagnosis of arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D) that facilitated recognition and interpretation of the frequently nonspecific clinical features of ARVC/D. This enabled confirmatory clin ...
Allometric Relations and Scaling Laws for the Cardiovascular
... the system can provide guidance in dealing with complex modeling issues where different scaling laws apply to different parts of the same system. 2. The Cardiovascular System Overall design of the cardiovascular system of mammals is well known. It consists of left and right sides of the heart (the p ...
... the system can provide guidance in dealing with complex modeling issues where different scaling laws apply to different parts of the same system. 2. The Cardiovascular System Overall design of the cardiovascular system of mammals is well known. It consists of left and right sides of the heart (the p ...
Cardiac Morphology and Blood Pressure in the Adult Zebrafish
... arteriosus was located anterior to the ventricle, and functioned as an elastic reservoir to absorb the rapid rise of pressure during ventricular contraction. The dense matrix of collagen interspersed across the entire bulbus arteriosus exemplified the characteristics of vasculature smooth muscle. Th ...
... arteriosus was located anterior to the ventricle, and functioned as an elastic reservoir to absorb the rapid rise of pressure during ventricular contraction. The dense matrix of collagen interspersed across the entire bulbus arteriosus exemplified the characteristics of vasculature smooth muscle. Th ...
Familial atrial septal defect in a single - Heart
... relatives (Fig.). Nora et al. (I967) and Williamson (I969) believe that the risk of atrial septal defect in a child is related to the total number of relatives with the lesion. Certainly, the incidence of congenital heart disease in sibs can rise sixfold in those families where a previous sib has ha ...
... relatives (Fig.). Nora et al. (I967) and Williamson (I969) believe that the risk of atrial septal defect in a child is related to the total number of relatives with the lesion. Certainly, the incidence of congenital heart disease in sibs can rise sixfold in those families where a previous sib has ha ...
Should all patients receive dual chamber pacing ICDs? The
... both pacemaker and ICD patients suggest that prolonged ventricular electrical activation time, particularly due to complete left bundle branch block, causes an inefficient left ventricular contraction pattern. This may have a negative impact on LV function and produce more significant congestive hea ...
... both pacemaker and ICD patients suggest that prolonged ventricular electrical activation time, particularly due to complete left bundle branch block, causes an inefficient left ventricular contraction pattern. This may have a negative impact on LV function and produce more significant congestive hea ...
Atrial Septal defect (ASD) Device Closure in Detail
... Ibuprofen or Indomethacin. Rarely some preemies need surgery. The baby’s neonatologist will start these. Regarding ASD, small defects upto 3-5mm, often close spontaneously. However, larger defects like more than 5-8mm size do not close. They need closure by 3-4 years of age i.e. preschool age either ...
... Ibuprofen or Indomethacin. Rarely some preemies need surgery. The baby’s neonatologist will start these. Regarding ASD, small defects upto 3-5mm, often close spontaneously. However, larger defects like more than 5-8mm size do not close. They need closure by 3-4 years of age i.e. preschool age either ...
The Effect of Cardiac Resynchronization on Morbidity and
... or investigator decided not to proceed. A cardiacAll prespecified analyses were conducted according resynchronization device was implanted and activatto the intention-to-treat principle. P values other ed in 390 patients (95 percent), in 349 on the first than for the primary end point are nominal. T ...
... or investigator decided not to proceed. A cardiacAll prespecified analyses were conducted according resynchronization device was implanted and activatto the intention-to-treat principle. P values other ed in 390 patients (95 percent), in 349 on the first than for the primary end point are nominal. T ...
Exercise, the Athlete`s Heart, and Sudden Cardiac Death
... achieving 10 METs, where additional mortality benefit was not seen with higher levels of fitness.10 This curvilinear relationship11 has again been shown in a study from Taiwan, which demonstrated that after 15 minutes a day of exercise, every additional 15 minutes of daily exercise conferred an addi ...
... achieving 10 METs, where additional mortality benefit was not seen with higher levels of fitness.10 This curvilinear relationship11 has again been shown in a study from Taiwan, which demonstrated that after 15 minutes a day of exercise, every additional 15 minutes of daily exercise conferred an addi ...
Congenital heart defects and associated comorbidities – 5 years of
... important subgroup of these since they carry a high risk of mortality and morbidity. The causes of CHD are complex and could be considered as chromosomal, single gene mutations or multifactorial. Though the prevalence has been reported to vary from 3.9 to 11.9 per 1,000 live births, the rate may be ...
... important subgroup of these since they carry a high risk of mortality and morbidity. The causes of CHD are complex and could be considered as chromosomal, single gene mutations or multifactorial. Though the prevalence has been reported to vary from 3.9 to 11.9 per 1,000 live births, the rate may be ...
PDF file - Via Medica Journals
... clinical practice. . Physiological QT dispersion indicates the variable values of the QT interval length in different ECG leads (QT max – QT min). The correct value is less than 50 ms. QT dispersion values greater than 100ms can be considered as potentially arrhythmogenic [6, 7]. The transmural disp ...
... clinical practice. . Physiological QT dispersion indicates the variable values of the QT interval length in different ECG leads (QT max – QT min). The correct value is less than 50 ms. QT dispersion values greater than 100ms can be considered as potentially arrhythmogenic [6, 7]. The transmural disp ...
Cardiovascular Features of Heart Failure With Preserved Ejection
... Cardiovascular features that might best distinguish patients with HF symptoms from those with similar clinical features such as hypertensive left ventricular hypertrophy (HLVH) but without HF remain unknown, because most studies have contrasted HFpEF patients to healthy normotensive (non-LVH) contro ...
... Cardiovascular features that might best distinguish patients with HF symptoms from those with similar clinical features such as hypertensive left ventricular hypertrophy (HLVH) but without HF remain unknown, because most studies have contrasted HFpEF patients to healthy normotensive (non-LVH) contro ...
Full-Text PDF
... The mature heart of vertebrates is a hollow muscle²the myocardium²whereby the inner and outer surfaces are covered by skins called the endocardium and epicardium, respectively. Up to the end of the 20th century, research on the developing heart mainly focused on the origin and differentiation of the ...
... The mature heart of vertebrates is a hollow muscle²the myocardium²whereby the inner and outer surfaces are covered by skins called the endocardium and epicardium, respectively. Up to the end of the 20th century, research on the developing heart mainly focused on the origin and differentiation of the ...
2007 Summer Newsletter - Texas Association of Cardiovascular and
... has been key in keeping us in touch with the national issues and updates as well as promoting our letter writing campaigns to key legislative congressmen and women. Thanks for all your hard work and dedication and we appreciate your ongoing efforts with the grassroots campaign. Our annual TACVPR Boa ...
... has been key in keeping us in touch with the national issues and updates as well as promoting our letter writing campaigns to key legislative congressmen and women. Thanks for all your hard work and dedication and we appreciate your ongoing efforts with the grassroots campaign. Our annual TACVPR Boa ...
Post-exercise heart rate recovery: an index of cardiovascular fitness
... blood pressure (BP), cardiac output, stroke volume (SV), maximum oxygen consumption (VO 2max), endurance capacity, HDL cholesterol, body fat, glucose-stimulated insulin, and total cholesterol levels. Thus a cardiovascular fit individual is expected to have a decreased resting HR, lower BP, increased ...
... blood pressure (BP), cardiac output, stroke volume (SV), maximum oxygen consumption (VO 2max), endurance capacity, HDL cholesterol, body fat, glucose-stimulated insulin, and total cholesterol levels. Thus a cardiovascular fit individual is expected to have a decreased resting HR, lower BP, increased ...
Mechanisms for increasing stroke volume during static exercise with
... complete heart block would prevent conduction of any atrial activity. Therefore, during the DOO-Rest mode, the pacemaker is firing to both atria and ventricles at a slower rate than the sinus node, and intermittent loss of atrioventricular synchrony may occur. Once the sensing mode of the pacemaker ...
... complete heart block would prevent conduction of any atrial activity. Therefore, during the DOO-Rest mode, the pacemaker is firing to both atria and ventricles at a slower rate than the sinus node, and intermittent loss of atrioventricular synchrony may occur. Once the sensing mode of the pacemaker ...
Electrocardiography
Electrocardiography (ECG or EKG*) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on a patient's body. These electrodes detect the tiny electrical changes on the skin that arise from the heart muscle depolarizing during each heartbeat.In a conventional 12 lead ECG, ten electrodes are placed on the patient's limbs and on the surface of the chest. The overall magnitude of the heart's electrical potential is then measured from twelve different angles (""leads"") and is recorded over a period of time (usually 10 seconds). In this way, the overall magnitude and direction of the heart's electrical depolarization is captured at each moment throughout the cardiac cycle. The graph of voltage versus time produced by this noninvasive medical procedure is referred to as an electrocardiogram (abbreviated ECG or EKG).During each heartbeat, a healthy heart will have an orderly progression of depolarization that starts with pacemaker cells in the sinoatrial node, spreads out through the atrium, passes through the atrioventricular node down into the bundle of His and into the Purkinje fibers spreading down and to the left throughout the ventricles. This orderly pattern of depolarization gives rise to the characteristic ECG tracing. To the trained clinician, an ECG conveys a large amount of information about the structure of the heart and the function of its electrical conduction system. Among other things, an ECG can be used to measure the rate and rhythm of heartbeats, the size and position of the heart chambers, the presence of any damage to the heart's muscle cells or conduction system, the effects of cardiac drugs, and the function of implanted pacemakers.