Introduction to Ventricular Assist Device (VAD)
... During surgery, the surgeon attaches the VAD to the apex of the left ventricle and to the aorta. When the left ventricle (the major pumping chamber of the heart) contracts (systole), blood flows into the VAD pump. When the heart relaxes (diastole), the left ventricle fills with blood, and the blood ...
... During surgery, the surgeon attaches the VAD to the apex of the left ventricle and to the aorta. When the left ventricle (the major pumping chamber of the heart) contracts (systole), blood flows into the VAD pump. When the heart relaxes (diastole), the left ventricle fills with blood, and the blood ...
Automated Heart Wall Motion Abnormality Detection
... along the walls. When the plaque restricts normal blood flow to an extreme extent the patient will experience chest pain, known as angina. When the blood flow to the heart muscle is reduced, the function of that piece of muscle fed by the blocked artery will begin to become impaired. This is known a ...
... along the walls. When the plaque restricts normal blood flow to an extreme extent the patient will experience chest pain, known as angina. When the blood flow to the heart muscle is reduced, the function of that piece of muscle fed by the blocked artery will begin to become impaired. This is known a ...
PDF version - Heart, Lung and Vessels
... Figure 3 - Speckle-tracking derived 2D-strain and strain rate off-pump recordings showing further cardiac improvement during left ventricular assist device (LVAD) support after off-pump left ventricular ejection fraction (LVEF) reached its maximum value of 50%. At the time of maximum LVEF improvemen ...
... Figure 3 - Speckle-tracking derived 2D-strain and strain rate off-pump recordings showing further cardiac improvement during left ventricular assist device (LVAD) support after off-pump left ventricular ejection fraction (LVEF) reached its maximum value of 50%. At the time of maximum LVEF improvemen ...
Second degree AV block and severely impaired contractility in
... (Fig. 2 and Additional file 1). Therefore, to rule out a peri-myocarditis, serologic studies, including parvovirusB19, streptococcus, influenza-virus, mycoplasma, adenovirus, enterovirus, herpes virus type 6 and cytomegalovirus were performed, which did not support the diagnosis. Titres of three sub ...
... (Fig. 2 and Additional file 1). Therefore, to rule out a peri-myocarditis, serologic studies, including parvovirusB19, streptococcus, influenza-virus, mycoplasma, adenovirus, enterovirus, herpes virus type 6 and cytomegalovirus were performed, which did not support the diagnosis. Titres of three sub ...
Definition, leads, limb, augmented limb, precordial, Characteristics
... The QRS complex should be negative in lead V1 and positive in lead V6. The QRS complex should show a gradual transition from negative to positive between leads V2 and V4. The equiphasic lead is referred to as the transition lead. When the transition occurs earlier than lead V3, it is referred to as ...
... The QRS complex should be negative in lead V1 and positive in lead V6. The QRS complex should show a gradual transition from negative to positive between leads V2 and V4. The equiphasic lead is referred to as the transition lead. When the transition occurs earlier than lead V3, it is referred to as ...
Academic paper: Reversing Heart Failure: Diastolic Recoil in a
... It should be noted that while, for very good reason, CAOs and MIs are well known, and were used here to illustrate the genesis of the heart failure cycle, they are by no means the only pathway followed by CHD or the sole means of initiating heart failure. Additionally, although CHD is one of the maj ...
... It should be noted that while, for very good reason, CAOs and MIs are well known, and were used here to illustrate the genesis of the heart failure cycle, they are by no means the only pathway followed by CHD or the sole means of initiating heart failure. Additionally, although CHD is one of the maj ...
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... depolarization (36), often sufficient to elicit an action potential (13, 24). Mechanical stretch has been demonstrated to generate atrial and ventricular arrhythmias (14, 17, 41, 51). Regional inhomogeneities in contractility and mechanical restitution may serve as foci for stretch-induced arrhythmi ...
... depolarization (36), often sufficient to elicit an action potential (13, 24). Mechanical stretch has been demonstrated to generate atrial and ventricular arrhythmias (14, 17, 41, 51). Regional inhomogeneities in contractility and mechanical restitution may serve as foci for stretch-induced arrhythmi ...
Cardiac Pacemakers From the Patient`s Perspective
... implanted. With rare exception, implantation of a pacemaker does not change the recipient’s activities or lifestyle. Although most people who receive pacemakers are aged 60 years or older, people of any age, even children, may need pacemakers. ...
... implanted. With rare exception, implantation of a pacemaker does not change the recipient’s activities or lifestyle. Although most people who receive pacemakers are aged 60 years or older, people of any age, even children, may need pacemakers. ...
Chapter 1 - Molecular Basis of Cardiac - SciTech Connect
... for these genes (as well as additional CHD-related genes presented later in the chapter) is of further interest. Loss of GATA4 is perhaps the best-known cause of cardia bifida. The GATA4 homozygous null mouse embryo fails to form a heart tube.29,30 Furthermore, siRNA knockdown of GATA4 in the chick ...
... for these genes (as well as additional CHD-related genes presented later in the chapter) is of further interest. Loss of GATA4 is perhaps the best-known cause of cardia bifida. The GATA4 homozygous null mouse embryo fails to form a heart tube.29,30 Furthermore, siRNA knockdown of GATA4 in the chick ...
Dynamic Control of Cardiac Alternans
... Control techniques from the field of nonlinear dynamics [1] have been used to control both chaotic [2] and nonchaotic [3] dynamical systems. Since these control methods do not require knowledge of the system’s governing equations, they are particularly applicable in biology where detailed mathematic ...
... Control techniques from the field of nonlinear dynamics [1] have been used to control both chaotic [2] and nonchaotic [3] dynamical systems. Since these control methods do not require knowledge of the system’s governing equations, they are particularly applicable in biology where detailed mathematic ...
The Alberta Heart Failure Etiology and Analysis Research Team
... expected to double in the next 1–2 decades [2,3]. In addition, the current one-year mortality rate after diagnosis of HF remains disturbingly high at >25% [4,5], and the condition has the worst effect on quality of life of any chronic medical condition [6]. Consequently, new therapeutic strategies n ...
... expected to double in the next 1–2 decades [2,3]. In addition, the current one-year mortality rate after diagnosis of HF remains disturbingly high at >25% [4,5], and the condition has the worst effect on quality of life of any chronic medical condition [6]. Consequently, new therapeutic strategies n ...
Our Heart Rate: Measuring Our Heart Rate at Rest
... system. The fundamental organ in this system is the heart, a very special muscle which has the ability to control itself. It works like a pump, receiving blood from the veins and ejecting it through the arteries. The blood arrives into the atria and then flows into the ventricles. From here, the ven ...
... system. The fundamental organ in this system is the heart, a very special muscle which has the ability to control itself. It works like a pump, receiving blood from the veins and ejecting it through the arteries. The blood arrives into the atria and then flows into the ventricles. From here, the ven ...
HRO_Europace_revisionV4 - Spiral
... Introduction Cardiac resynchronisation therapy (CRT) is an established treatment for patients with heart failure and left bundle branch block (LBBB) or complete heart block. However, despite treatment, morbidity and mortality remain high1. The current assumption is that the predominant mechanism of ...
... Introduction Cardiac resynchronisation therapy (CRT) is an established treatment for patients with heart failure and left bundle branch block (LBBB) or complete heart block. However, despite treatment, morbidity and mortality remain high1. The current assumption is that the predominant mechanism of ...
Hypoxia- and normoxia-induced reversibility of autonomic control in
... bAR downregulation has been suggested to play an important role in terms of protecting the myocardium from excessive O2 consumption (25). In this regard, Whiteis et al. (30) have found in guinea pigs exposed to 10% O2 that presynaptic restraint on NE synthesis and release in the heart might also be ...
... bAR downregulation has been suggested to play an important role in terms of protecting the myocardium from excessive O2 consumption (25). In this regard, Whiteis et al. (30) have found in guinea pigs exposed to 10% O2 that presynaptic restraint on NE synthesis and release in the heart might also be ...
LWW PPT Slide Template Master
... • Abnormal heart rates and rhythms – Bradycardia: slow heartbeat, less than 60 bpm – Tachycardia: fast heart rate, greater than 100 bpm – Atrial flutter: atrial rhythm is regular, but the rate is abnormally fast ...
... • Abnormal heart rates and rhythms – Bradycardia: slow heartbeat, less than 60 bpm – Tachycardia: fast heart rate, greater than 100 bpm – Atrial flutter: atrial rhythm is regular, but the rate is abnormally fast ...
1st Degree AV Block
... • Usually occurs when heart is not pumping enough blood to meet body's needs. This often happens when the heart rate is very slow or remains slow for a long period of time. • Related to organ hypo-perfusion and include: ...
... • Usually occurs when heart is not pumping enough blood to meet body's needs. This often happens when the heart rate is very slow or remains slow for a long period of time. • Related to organ hypo-perfusion and include: ...
Lenient vs. strict rate control in patients with atrial fibrillation and
... for heart failure or signs and symptoms of heart failure. Primary outcome was a composite of cardiovascular morbidity and mortality. Secondary endpoints were AF-related symptoms and quality of life. Two hundred and eighty-seven (46.7%) of the 614 patients had heart failure. Patients with heart failu ...
... for heart failure or signs and symptoms of heart failure. Primary outcome was a composite of cardiovascular morbidity and mortality. Secondary endpoints were AF-related symptoms and quality of life. Two hundred and eighty-seven (46.7%) of the 614 patients had heart failure. Patients with heart failu ...
Emergency diagnosis and management of acute heart failure
... and cardiac ultrasound tests have an important role in its diagnostics. The significance of diastolic dysfunction is enhanced by the fact that both the symptomatic and asymptomatic versions are independent risk factors for cardiovascular mortality. An ejection fraction below 40% generally signifies ...
... and cardiac ultrasound tests have an important role in its diagnostics. The significance of diastolic dysfunction is enhanced by the fact that both the symptomatic and asymptomatic versions are independent risk factors for cardiovascular mortality. An ejection fraction below 40% generally signifies ...
PDF - Circulation
... Pressure on the right sinus thus decreases the activity of the sinoatrial node and slows the heart. Sensitivity of the carotid sinus is increased in a variety of conditions, particularly in myocardial infarction,' congestive heart failure,2 and arteriosclerotic hypertensive vascular disease.3 Digita ...
... Pressure on the right sinus thus decreases the activity of the sinoatrial node and slows the heart. Sensitivity of the carotid sinus is increased in a variety of conditions, particularly in myocardial infarction,' congestive heart failure,2 and arteriosclerotic hypertensive vascular disease.3 Digita ...
Transcripts/4_24 11-12 (Ku)
... IX. [S9] Major Determinants of Conduction Velocity a. How do we decide conduction velocity? By 2 things: (1) upstroke of velocity of phase 0, how fast is phase 0, how fast does sodium rush into the cell, and (2) the amplitude of the upstroke. b. If you start with -90 and then change to -95 the heigh ...
... IX. [S9] Major Determinants of Conduction Velocity a. How do we decide conduction velocity? By 2 things: (1) upstroke of velocity of phase 0, how fast is phase 0, how fast does sodium rush into the cell, and (2) the amplitude of the upstroke. b. If you start with -90 and then change to -95 the heigh ...
Final heart development
... • After lateral folding of the embryo • The 2 heart tubes fuse together to form a single endocardial heart tube. • It begins to beat at 22 to 23 days. ...
... • After lateral folding of the embryo • The 2 heart tubes fuse together to form a single endocardial heart tube. • It begins to beat at 22 to 23 days. ...
Cardiac Pacemakers
... People with pacemakers may use all types of household appliances and power tools. “With my pacemaker I cannot use a cellular telephone.” Although there is a possibility of interference with some high-power digital cell phones, people with pacemakers usually need only to keep the phone out of clothin ...
... People with pacemakers may use all types of household appliances and power tools. “With my pacemaker I cannot use a cellular telephone.” Although there is a possibility of interference with some high-power digital cell phones, people with pacemakers usually need only to keep the phone out of clothin ...
hypertrophic cardiomyopathy - American Heart Association
... Once suspected, the diagnosis of hypertrophic cardiomyopathy is established with an echocardiogram (or ultrasound of the heart) looking for abnormally thick walls predominantly in the left pumping chamber (left ventricle). In addition, the extent of obstruction or muscular narrowing through the outl ...
... Once suspected, the diagnosis of hypertrophic cardiomyopathy is established with an echocardiogram (or ultrasound of the heart) looking for abnormally thick walls predominantly in the left pumping chamber (left ventricle). In addition, the extent of obstruction or muscular narrowing through the outl ...
Exercise-Induced Left Ventricular Systolic Dysfunction in Women
... The findings and recommendations by Holloway et al16 appear to be at odds with American Heart Association and American College of Cardiology guidelines, which identify asymptomatic patients with ‘‘structural heart disease,’’ including abnormal ejection fraction, as having stage B heart failure.17 In ...
... The findings and recommendations by Holloway et al16 appear to be at odds with American Heart Association and American College of Cardiology guidelines, which identify asymptomatic patients with ‘‘structural heart disease,’’ including abnormal ejection fraction, as having stage B heart failure.17 In ...