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How Accurate can Electrocardiogram Predict Left Ventricular
How Accurate can Electrocardiogram Predict Left Ventricular

... inverse linear association between the TpTe interval and tissue Doppler septal E0 velocity. This association persisted after adjustment for several important potential confounders, including age, QTc interval and left ventricular wall thickness4. The standard interpretation of the exercise stress te ...
Heart Rate Variability Training - Biofeedback Federation of Europe
Heart Rate Variability Training - Biofeedback Federation of Europe

... is highly variable within any given time period. Multiple biological rhythms overlay one another to produce the resultant pattern of variability. Interbeat interval variations, or heart rate variability, have relevance for physical, emotional, and mental function. Many people confuse Heart Rate with ...
Pedunculated Giant Left Atrial Mass: tumor or thrombus?
Pedunculated Giant Left Atrial Mass: tumor or thrombus?

... and the size of mass was 24x34mm2, which supported the diagnosis typically of myxoma. On physical examination, there was no accentuated first heart sound, an opening snap, and a mid-diastolic rumble, which excluded any obturation of mitral valve imitating mitral stenosis. The electrocardiogram showe ...
Cardiac Board Review-Part I
Cardiac Board Review-Part I

... • WPW • Greater than 1mm ST depression • LBBB • Paced rhythm ...
Circulation in the Three
Circulation in the Three

... were placed in polyvinyl tubes, slightly longer than the animals. The inner diameter of the tubes was likewise slightly larger than that of the animals to allow for unrestricted respiratory movements. The snakes were fastened to the tubes by needles through the tube wall and the skin of the animals. ...
Sudden Death in Congenital Heart Disease:
Sudden Death in Congenital Heart Disease:

... Decreasing mortality associated with adult congenital heart disease Pillutla et al, Ann Thorac Surg, 2003 ...
Management of Heart Failure
Management of Heart Failure

... Mechanism of action of digoxin in arrhythmia In atrial dysrhythmias, digoxin slows the rate of ventricular contraction (negative chronotropic effect). This effect is caused by several factors: 1. First, digoxin has a direct depressant effect on cardiac conduction tissues, especially the atrioventri ...
Optogenetic Control of Cardiac Function
Optogenetic Control of Cardiac Function

... is generally situated on the right side, which matches our findings in zebrafish. Furthermore, the center of the region appeared to be located about 10 mm (one or two cell diameters) farther anterior than the neck of the SAR (Fig. 2D). Interestingly, the cells that make up the lips of the sinus adja ...
Cardiac Output and its measurements
Cardiac Output and its measurements

... • Affected by the phase of respiration and should be measured at the same point of respiratory cycle • Variations in the speed of cold water injection can result in altered measurement ...
Intra-cardiac turbulence in a realistic human left heart
Intra-cardiac turbulence in a realistic human left heart

... applications [4]. It is based on fourth-order finite-volume approximation and an explicit fourthorder Runge-Kutta scheme for time integration. Due to the expected transitional nature of the flow, large eddy simulations are performed to represent turbulence, using advanced subgrid scale models able ...
Automated Heart Abnormality Detection Using Sparse Linear
Automated Heart Abnormality Detection Using Sparse Linear

... to become impaired. This is known as ischemia. This functional impairment can be seen from ultrasound images of the heart, also called echocardiograms (echos). One of the first effects of coronary artery disease is that the motion of the heart wall during contraction will become impaired. Accurate r ...
How To Differentiate Right Ventricular Outflow Tract Tachycardia
How To Differentiate Right Ventricular Outflow Tract Tachycardia

... Niroomand F, Carbucicchio C, Tondo C et al (2002) Electrophysiological characteristics and outcome in patients with idiopathic right ventricular arrhythmia compared with arrythmogenic right ventricular dysplasia. Heart 87:41–47 O’Donnell D, Cox D, Bourke J et al (2003) Clinical and electrophysiologi ...
Left Ventricle Remodeling for Patients with Heart Failure and
Left Ventricle Remodeling for Patients with Heart Failure and

... interior dimension. RWT= (PWTd + IVSTd) / LVIDd Relative wall thickness more than (0.45) has been considered as a threshold of pathologic left ventricular hypertrophy. Results: The assessment of the parameters changes between normal and patients were calculated by taking the ratio percent change bet ...
Journal Club Pack - Circulation Research
Journal Club Pack - Circulation Research

... RVH (RV thickness/body surface area; r2=0.838 and r2=0.818, respectively; P<0.01). These results were recapitulated in the rat model. In modified Langendorff perfusions, ERAs (BQ-123 and bosentan 10−7,−6,−5 mol/L) decreased contractility in the hypertrophied, but not normal RV, in a dose-dependent m ...
Acute Myocardial Infarction with Simultaneous Occlusions of Left
Acute Myocardial Infarction with Simultaneous Occlusions of Left

... we did not use GP IIb/IIIa inhibitor. However, we feel at odds about ...
Post Operative Clinical Improvement in the Absence of Reverse
Post Operative Clinical Improvement in the Absence of Reverse

... Outcomes Study Short-Form 12 (SF-12) Health Survey • The SF-12 was derived from the original SF-36 health survey by selecting those items having the greatest explanatory power. • Higher scores are better • Multiple groups have agreed that the minimal clinically important changes in the mental and ph ...
Short‑Term Effects of Ivabradine in Patients with Chronic Stable
Short‑Term Effects of Ivabradine in Patients with Chronic Stable

... Introduction: Ivabradine is a novel selective If current inhibitor with anti‑ischemic and antianginal activity. Objectives: To assess the effect of the selective If current inhibitor ivabradine on heart rate, angina pectoris, and functional capacity in stable patients with chronic coronary artery di ...
Podium
Podium

... and their association with subsequent cardiac events has not been well defined. Aims: To assess the value of 2 weeks of remote cardiac monitoring for detecting arrhythmias in an elderly population living with HF. Methods: The study population consisted of 53 patients with a history of systolic HF an ...
Open Brochure Here - American Board of Cardiovascular Medicine
Open Brochure Here - American Board of Cardiovascular Medicine

... Course Location: Austin, TX – Seton Medical Center, Austin, TX ...
www.laney.edu
www.laney.edu

... the SR, which liberates bursts of Ca2+ •E-C coupling occurs as Ca2+ binds to troponin and sliding of the filaments begins •Duration of the AP and the contractile phase is much greater in cardiac muscle than in skeletal muscle •Repolarization results from inactivation of Ca2+ channels and opening of ...
PDF - Circulation Research
PDF - Circulation Research

... of Intramural Medicine and Experimental Cardiology at Huntington Memorial Hospital in Pasadena, received the Heart Association's 1974 Research Achievement Award. In receiving the award, AHA's foremost prize for scientific accomplishment, Dr. Bing was cited as "a clinical scientist of imposing statur ...
h-FABP - biognostic
h-FABP - biognostic

... trauma that injures the heart such as a car accident, weakening of the heart muscle (cardiomyopathy). Increased Troponin levels may also result from certain medical procedures such as: cardiac angioplasty/stenting, heart defibrillation or electrical cardioversion (purposeful shocking of the heart b ...
Typical atrioventricular nodal reentrant and orthodromic
Typical atrioventricular nodal reentrant and orthodromic

... tachycardias narrow QRS in adults and 15% of supraventricular tachycardias in pediatric patients, predominantly from adolescence onwards. There is a female predominance, with a ratio of 2:1 or 3:1. Its manifestation occurs mainly during the third or fourth decade of life. At physical examination, “f ...
Heart and Pressure PPT
Heart and Pressure PPT

... You're using about the same amount of force your heart uses to pump blood out to the body ...
On Measuring the Absolute Ventricular Volumes for the Estimation of
On Measuring the Absolute Ventricular Volumes for the Estimation of

... developed (1-6). ESPVR is a valuable tool; it designates a maximal elastance (maximal pressure/volume ratio). A traditional way to estimate ESPVR is to alter the heart load and use multiple cardiac cycles (Figure 1). Inducing such a transitional status is time consuming and increases the risk of hea ...
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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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