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Hemodynamics and Ventricular Function in the Day-12 Rat
Hemodynamics and Ventricular Function in the Day-12 Rat

... taken into account when we constructed pressure-area loop, as was reported by Keller et al. (17) in chick embryos. In the chick embryo, the ventricle is viewed from its right side; thus, the primitive right ventricle is the subject of measurement, whereas the rat embryo is usually in its left-side u ...
Role of coenzyme Q10 (CoQ10) in cardiac disease, hypertension
Role of coenzyme Q10 (CoQ10) in cardiac disease, hypertension

... Studies performed by Folkers et al. (1970) showed that 70–75% of heart patients exhibit low levels of CoQ10. Circulating levels of CoQ10 were significantly lower in patients with ischemic heart disease and in those with dilated cardiomyopathy as compared to healthy controls (Langsjoen, 1990). Myocard ...
The Heart
The Heart

Combined Heart and Liver Transplantation
Combined Heart and Liver Transplantation

... hypercholesterolemia and coronary artery disease with her unfortunate death after 10 weeks [5]. There was another setback due to the demise of 2 patients at the time of admission with complications of familial hypercholesterolemia and coronary artery disease in one and biliary hypoplasia and cardiom ...
Strain rate imaging: fundamental principles and progress so far
Strain rate imaging: fundamental principles and progress so far

... Myocardial strain and SR values can be obtained in a clinical setting using either Doppler myocardial imaging (DMI) [6,10] or speckle tracking [11,201] techniques. In this section, both approaches will be presented from a technical point of view and their respective strengths and weaknesses will be ...
The Cardiovascular System
The Cardiovascular System

... The heart pumps blood through the arteries to the cells of the body. The blood moves in a surge caused by the muscular contraction of the heart. This surge is called the pulse. The blood that goes from the heart to the cells of the body (except the lungs) is oxygenated. Specialized arteries carry th ...
Two dimensional echocardiographic diagnosis of - Heart
Two dimensional echocardiographic diagnosis of - Heart

... acute myocardial infarction, being found in 0-9% of fatal myocardial infarctions at necropsy.3 Rupture of the posteromedial papillary muscle is 250% more frequent than rupture of the anterolateral muscle, because of the former's single blood supply from the posterior descending coronary artery.4 Rup ...
Right ventricular dysfunction in patients with idiopathic dilated
Right ventricular dysfunction in patients with idiopathic dilated

... review of coronary angiograms. Ischaemic substrate was defined as any stenosis ≥ 50% in either of the main coronary arteries or in one of their main side branches. Data from patients with insufficient echocardiography or examination performed in an unstable clinical state were not retained for analysi ...
Increased plasma levels of adrenomedullin in patients with
Increased plasma levels of adrenomedullin in patients with

... has been detected in human plasma, and human adrenomedullin messenger RNA is reported to be highly expressed not only in pheochromocytoma, but also in the normal adrenal medulla, kidney, lung and ventricle (2). Recent studies (3,4) report that vascular smooth muscle cells possess specific adrenomedu ...
Single Ventricle Physiology
Single Ventricle Physiology

...  The only effective mixing site in TGA is at the atrial level (not PDA) so TGA is not a ductal-dependent lesion.  The only effective means that a neonate can increase cardiac output is by heart rate (not volume or increased inotropy). ...
Pectus excavatum
Pectus excavatum

... pseudonyms describing the same deformity of gations blame their abnormal findings on the dewhich the aetiology remains unknown and open to formity of the chest wall, but we believe that a speculation. Brodkin (1953) and Chin (1957) blame negative pressure behind the sternum is the main the xiphoid o ...
Towards Privacy-Preserving Medical Cloud Computing Using
Towards Privacy-Preserving Medical Cloud Computing Using

... al., 2013): Acquisition (Phase I), Storage (Phase II), and Computation (Phase III). ECG Acquisition Devices ECG recording technology has advanced to the point where there are personal ECG recording devices that allow patients to record ECG activity at home (e.g., the iPhone attachment from Alivecor ...
Arrhythmia/Electrophysiology
Arrhythmia/Electrophysiology

... Background—Electrically based therapies for terminating atrial fibrillation (AF) currently fall into 2 categories: antitachycardia pacing and cardioversion. Antitachycardia pacing uses low-intensity pacing stimuli delivered via a single electrode and is effective for terminating slower tachycardias ...
Physical Examination of the Cardiovascular System
Physical Examination of the Cardiovascular System

... value, and establishes rapport between patient and physician [2]. First, it is important to be systematic. Second, form a differential diagnosis before you start, so the physical will help rule in/out the possible diagnoses. In addition, try to correlate all information e.g. if the patient has an El ...
7  Adult Advanced Life Support
7 Adult Advanced Life Support

... difference in management is the need for attempted defibrillation in patients with VF/VT. Subsequent actions, including chest compression, airway management and ventilation, vascular access, administration of adrenaline, and the identification and correction of reversible factors, are common to both ...
PowerPoint Presentation - Tissue characterization of acute
PowerPoint Presentation - Tissue characterization of acute

... myocardial disease such as ECG, seromarkers and ...
Fluid–structure interaction modeling of aortic valve stenosis at
Fluid–structure interaction modeling of aortic valve stenosis at

... In this study, the cardiac output and stroke volume have been investigated numerically during exercise in the presence of aortic stenosis. A twodimensional FSI simulation has been applied. Different severities of aortic valve stenosis have been considered and classified as: Healthy, Normal, Mild, Mo ...
PDF file - Via Medica Journals
PDF file - Via Medica Journals

... peak stress, and at recovery. The test was stopped for any of the following reasons: a rating of perceived exertion > 17 (Borg scale); achievement of > 90% of age predicted maximum HR; if the subject was too fatigued to safely continue walking on the treadmill; systolic blood pressure > 250 mm Hg; t ...
Abnormal heart rate recovery after exercise predicts coronary artery
Abnormal heart rate recovery after exercise predicts coronary artery

... peak stress, and at recovery. The test was stopped for any of the following reasons: a rating of perceived exertion > 17 (Borg scale); achievement of > 90% of age predicted maximum HR; if the subject was too fatigued to safely continue walking on the treadmill; systolic blood pressure > 250 mm Hg; t ...
Role of an ATP-Sensitive Potassium Channel Opener, YM934, in
Role of an ATP-Sensitive Potassium Channel Opener, YM934, in

... 3.7 mm and connected to a pressure transducer (TP-200; Nihonkohden, Tokyo, Japan), was inserted into the left ventricular cavity through the mitral opening and secured with a ligature that included the left atrial remnants. As the initial left ventricular end-diastolic pressure (LVEDP), 5 mm Hg was ...
Systematizing Inpatient Referral to Cardiac Rehabilitation: A joint
Systematizing Inpatient Referral to Cardiac Rehabilitation: A joint

... Other future research needed includes the potential of systematic referral strategies in reducing inequities in CR access. Finally, a full economic evaluation of the costs and consequences of CR including systematic inpatient referral strategies is needed. Improving Referral to CR Although unrealize ...
Ampulla Cardiomyopathy (Takotsubo Cardiomyopathy)-- -    A Review
Ampulla Cardiomyopathy (Takotsubo Cardiomyopathy)-- - A Review

... (which is the terminal aspect of either the right ...
心脏mri检查中自由呼吸单次激发ss fiesta序列应用
心脏mri检查中自由呼吸单次激发ss fiesta序列应用

... phased array coil dedicated for cardiac MRI was used, the electrocardiogram (ECG) leads were placed in the precordium for vectorcardiogram gating (or a peripheral pulse gating device was placed around the fingers), and the respiratory gating device was placed on the abdomen. According to the myocard ...
12-lead Electrocardiogram in Acute Coronary Syndrome
12-lead Electrocardiogram in Acute Coronary Syndrome

Cardiovascular magnetic resonance: Basic
Cardiovascular magnetic resonance: Basic

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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.
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