New methods of studying affections of the heart.
... dlsease, I had noted an increase in the a-c interval for some years. During labour it frequently happens that the pulse becomes irregular, the irregularity often being of a respiratory type. The radial tracing in Fig. 5 shows such an irregularity. The tracing of the carotid and jugular slhows a rise ...
... dlsease, I had noted an increase in the a-c interval for some years. During labour it frequently happens that the pulse becomes irregular, the irregularity often being of a respiratory type. The radial tracing in Fig. 5 shows such an irregularity. The tracing of the carotid and jugular slhows a rise ...
QRS Duration Criteria to Select Patients for Cardiac
... that there is no benefit from CRT in patients with moderately prolonged QRS if each of the included trials already reached the same conclusion individually. However, there is an important problem with this seemingly obvious conclusion. All the above studies share the same feature: the duration of th ...
... that there is no benefit from CRT in patients with moderately prolonged QRS if each of the included trials already reached the same conclusion individually. However, there is an important problem with this seemingly obvious conclusion. All the above studies share the same feature: the duration of th ...
QRS Duration Criteria to Select Patients for Cardiac
... that there is no benefit from CRT in patients with moderately prolonged QRS if each of the included trials already reached the same conclusion individually. However, there is an important problem with this seemingly obvious conclusion. All the above studies share the same feature: the duration of th ...
... that there is no benefit from CRT in patients with moderately prolonged QRS if each of the included trials already reached the same conclusion individually. However, there is an important problem with this seemingly obvious conclusion. All the above studies share the same feature: the duration of th ...
PDF (Thesis_Part2)
... Chapter 2 provides essential background information for the research presented. We review heart development in vertebrates and explain why zebrafish are the model system of choice to study dynamic cardiac function. We provide evidence that hemodynamic forces contribute to normal and abnormal heart d ...
... Chapter 2 provides essential background information for the research presented. We review heart development in vertebrates and explain why zebrafish are the model system of choice to study dynamic cardiac function. We provide evidence that hemodynamic forces contribute to normal and abnormal heart d ...
Aortic Valve Replacement
... 1.1 Prosthesis-patient mismatch – the concept Prosthesis-patient mismatch (PPM) was first described by Rahimtoola in 1978 (1) who stated that “mismatch can be considered present when the effective prosthetic valve area, after insertion into the patient, is less than that of a normal human valve”. Ra ...
... 1.1 Prosthesis-patient mismatch – the concept Prosthesis-patient mismatch (PPM) was first described by Rahimtoola in 1978 (1) who stated that “mismatch can be considered present when the effective prosthetic valve area, after insertion into the patient, is less than that of a normal human valve”. Ra ...
The Fontan circulation after 45 years: update in physiology
... Hospital survival has markedly improved with a reduction in mortality to 1%–2%. In the last couple of years, despite major efforts, ...
... Hospital survival has markedly improved with a reduction in mortality to 1%–2%. In the last couple of years, despite major efforts, ...
Guidelines for cardiac pacing and cardiac - Af
... The clinical effects of long-term CRT were firstly evaluated in noncontrolled studies, in which a sustained benefit conferred by biventricular pacing was measured. Randomized multi-centre trials with crossover or parallel treatment assignments were subsequently conducted to ascertain the clinical va ...
... The clinical effects of long-term CRT were firstly evaluated in noncontrolled studies, in which a sustained benefit conferred by biventricular pacing was measured. Randomized multi-centre trials with crossover or parallel treatment assignments were subsequently conducted to ascertain the clinical va ...
Prospective and Retrospective ECG Gating for Thoracic CT
... rupture, inflammatory disorders, and congenital malformations [1, 2]. By creating a 3D image, CT angiography may be superior to conventional angiography [3, 4]. ...
... rupture, inflammatory disorders, and congenital malformations [1, 2]. By creating a 3D image, CT angiography may be superior to conventional angiography [3, 4]. ...
12 Heart Chapter Outline and Objectives
... eople often refer to the heart as if it were the seat of certain strong emotions. A very determined person may be described as having “a lot of heart,” and a person who has been disappointed romantically can be described as having a “broken heart.” A popular holiday in February not only dramatically ...
... eople often refer to the heart as if it were the seat of certain strong emotions. A very determined person may be described as having “a lot of heart,” and a person who has been disappointed romantically can be described as having a “broken heart.” A popular holiday in February not only dramatically ...
Effects of obstructive sleep apnoea on heart rhythm REVIEW
... hypertension and vascular dysfunction, and has been proposed to be causally related with cardiac arrhythmias and sudden cardiac death. Searches of bibliographical databases revealed that several mechanisms seem to underpin the association between OSA and cardiac arrhythmias: intermittent hypoxia ass ...
... hypertension and vascular dysfunction, and has been proposed to be causally related with cardiac arrhythmias and sudden cardiac death. Searches of bibliographical databases revealed that several mechanisms seem to underpin the association between OSA and cardiac arrhythmias: intermittent hypoxia ass ...
approach to wide qrs complex tachycardia
... complexes during a WCT that are identical to the sinus QRS complex . Implies that the normal conduction system has momentarily "captured" control of ventricular activation from the VT focus. Fusion beats and capture beats are more commonly seen when the tachycardia rate is slower ...
... complexes during a WCT that are identical to the sinus QRS complex . Implies that the normal conduction system has momentarily "captured" control of ventricular activation from the VT focus. Fusion beats and capture beats are more commonly seen when the tachycardia rate is slower ...
The Fontan circulation after 45 years: update in
... Hospital survival has markedly improved with a reduction in mortality to 1%–2%. In the last couple of years, despite major efforts, ...
... Hospital survival has markedly improved with a reduction in mortality to 1%–2%. In the last couple of years, despite major efforts, ...
cardio what?. - Children`s Cardiomyopathy Foundation
... into the left atrium and then gets pumped out to the rest of the body from the left ventricle. The oxygen in your blood is needed for energy in your body, so having your heart work properly is important! In most people, the heart is about the size of their fist. The heart squeezes and relaxes in the ...
... into the left atrium and then gets pumped out to the rest of the body from the left ventricle. The oxygen in your blood is needed for energy in your body, so having your heart work properly is important! In most people, the heart is about the size of their fist. The heart squeezes and relaxes in the ...
Heart to Heart: Inherited Cardiovascular
... Genetic testing can aid clinical management by enabling more accurate diagnosis and risk assessment, and in some cases guiding the choice of treatment. Importantly, identification of a mutation in an affected person enables their relatives to be offered targeted testing for the same mutation. Those ...
... Genetic testing can aid clinical management by enabling more accurate diagnosis and risk assessment, and in some cases guiding the choice of treatment. Importantly, identification of a mutation in an affected person enables their relatives to be offered targeted testing for the same mutation. Those ...
Bicuspid Aortic Valve Is Associated With Altered Wall Shear Stress
... increased and asymmetric WSS at the aorta wall was related to ascending aortic flow jet patterns, which were influenced by the BAV fusion pattern. (Circ Cardiovasc Imaging. 2012;5:457-466.) Key Words: bicuspid aortic valve ◼ aorta ◼ wall shear stress ◼ magnetic resonance imaging ...
... increased and asymmetric WSS at the aorta wall was related to ascending aortic flow jet patterns, which were influenced by the BAV fusion pattern. (Circ Cardiovasc Imaging. 2012;5:457-466.) Key Words: bicuspid aortic valve ◼ aorta ◼ wall shear stress ◼ magnetic resonance imaging ...
Tumours of the Heart
... tissue sarcomas.There is no TNM classification for cardiac malignancies. Treatment and prognosis In general, surgical resection, when possible, is the treatment of choice for primary cardiac tumours in symptomatic patients. It is also highly desirable for patients whose tumours are identified incide ...
... tissue sarcomas.There is no TNM classification for cardiac malignancies. Treatment and prognosis In general, surgical resection, when possible, is the treatment of choice for primary cardiac tumours in symptomatic patients. It is also highly desirable for patients whose tumours are identified incide ...
Role of Cardiac Myocyte CXCR4 Expression in Development and
... progenitor stem cells to the infarct zone heart, and cardiac myocyte survival during AMI and chronic heart failure. The SDF-1/CXCR4 axis has also been shown to be critical in cardiac development.9 –11 Although SDF-1/CXCR4 axis is a ...
... progenitor stem cells to the infarct zone heart, and cardiac myocyte survival during AMI and chronic heart failure. The SDF-1/CXCR4 axis has also been shown to be critical in cardiac development.9 –11 Although SDF-1/CXCR4 axis is a ...
Dual LAD – Contemporary Review
... from the LAD proper in 21 cases and from the right coronary artery in 2 cases. The initial course of the long LAD was on the epicardial surface of the left ventricle in 17 cases, right ventricle in 3 cases, and within the interventricular septum in 3 cases. A novel variant of dual LAD anomaly was de ...
... from the LAD proper in 21 cases and from the right coronary artery in 2 cases. The initial course of the long LAD was on the epicardial surface of the left ventricle in 17 cases, right ventricle in 3 cases, and within the interventricular septum in 3 cases. A novel variant of dual LAD anomaly was de ...
a finite element model of the human left ventricular systole, taking
... The SPOT method (fibre Strand Peel-Off Technique) was applied to obtain a representative fibre architecture of the human heart. The data contained the coordinates of several thousand myocardial fibres, whereby each fibre, in turn, was represented by a number of points. The fibre orientation in the m ...
... The SPOT method (fibre Strand Peel-Off Technique) was applied to obtain a representative fibre architecture of the human heart. The data contained the coordinates of several thousand myocardial fibres, whereby each fibre, in turn, was represented by a number of points. The fibre orientation in the m ...
Tachydysrhythmias
... • causes: • include electrolyte and acid-base disturbances, drug toxicity, fever, hypoxemia • MFAT classically associated with pulmonary disease and hypoxemia • Treat underlying disorder • if pt symptomatic can treat with Beta blocker or Calcium channel blocker or Amiodarone • Magnesium second line ...
... • causes: • include electrolyte and acid-base disturbances, drug toxicity, fever, hypoxemia • MFAT classically associated with pulmonary disease and hypoxemia • Treat underlying disorder • if pt symptomatic can treat with Beta blocker or Calcium channel blocker or Amiodarone • Magnesium second line ...
Colegio Interamericano de Radiología
... catheters 3. Post radiation Congenital: cysts Other: 1. Heart failure 2. Hypothyroidism 3. Amyloidosis 4. Aortic dissection ...
... catheters 3. Post radiation Congenital: cysts Other: 1. Heart failure 2. Hypothyroidism 3. Amyloidosis 4. Aortic dissection ...
Current and Evolving Echocardiographic Techniques
... according to the application for measuring slopes and time intervals: high sweep speed for measuring slopes in a few beats and low sweep speed for measuring peak values in several beats. Some imaging systems enable retrospective adjustments of sweep speed in stored data without a loss of data qualit ...
... according to the application for measuring slopes and time intervals: high sweep speed for measuring slopes in a few beats and low sweep speed for measuring peak values in several beats. Some imaging systems enable retrospective adjustments of sweep speed in stored data without a loss of data qualit ...
Mechanism of Ventricular Fibrillation in Hypothermia
... Conduction velocity, refractory period, and ventricular threshold were measured in closed-chest intact dogs using1 Ag-AgCl electrodes placed directly on the myocardium. One indifferent and two stimulating electrodes were attached to the base of the right ventricle for the measurement of ventricular ...
... Conduction velocity, refractory period, and ventricular threshold were measured in closed-chest intact dogs using1 Ag-AgCl electrodes placed directly on the myocardium. One indifferent and two stimulating electrodes were attached to the base of the right ventricle for the measurement of ventricular ...
Mitral heart valve replacements
... material extending from edge portions 33X, 34X and carrying an arcuate sizing member having a circumfer 36X of the cusps 33, 34, 36A and 36B for connection ential shallow groove for ?tting within the correspond ing part of the remnant of the excised natural valve of 55 through attachment portions 38 ...
... material extending from edge portions 33X, 34X and carrying an arcuate sizing member having a circumfer 36X of the cusps 33, 34, 36A and 36B for connection ential shallow groove for ?tting within the correspond ing part of the remnant of the excised natural valve of 55 through attachment portions 38 ...
Implantable Cardioverter Defibrillators
... a) Ischemic cardiomyopathy with New York Heart Association (NYHA) functional class II or class III symptoms, a history of myocardial infarction at least 40 days before ICD treatment, and left ventricular ejection fraction of 35% or less; or b) Ischemic cardiomyopathy with NYHA functional class I sym ...
... a) Ischemic cardiomyopathy with New York Heart Association (NYHA) functional class II or class III symptoms, a history of myocardial infarction at least 40 days before ICD treatment, and left ventricular ejection fraction of 35% or less; or b) Ischemic cardiomyopathy with NYHA functional class I sym ...
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.