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Hypertrophic Cardiomyopathy
Hypertrophic Cardiomyopathy

... Jennifer Terker Professor of Pediatrics Division Chief, Pediatric Cardiology Medical Director, Heart Transplant Program The Children’s Hospital of Philadelphia University of Pennsylvania School of Medicine ...
Anatomy and Physiology II MED 165 Cardiac Anatomy Study
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Quiz: The Circulatory System. - year22011-2012
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... 1- How many chambers does the heart have? a. Six. b. Five. c. Four. d. Three. 2- The movement of blood through the heart and body is called: a. Circulation. b. Locomotion. c. Ventriculation. d. Heart pump. 3- The beating sound your heart makes comes from: a. Blood going in the wrong direction. b. Va ...
CARDIAC FAILURE-Medical surgical nursing ppt
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Cardiovascular Pharmacology
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Clinical and electrocardiographic features
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Case rounds: chest pain
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Week 5 – Electrocardiography and Blood pressure Objectives
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Week 5 – Electrocardiography and Blood pressure Objectives
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Nursing and heart failure
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Arrhythmias
Arrhythmias

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ASD-Atrial Septal Defect
ASD-Atrial Septal Defect

... The normal heart has four chambers. The two top chambers receive blood from the body and lungs. These chambers are called the atria. The two bottom chambers pump blood to the body and lungs. These are called the ventricles. These chambers are separated by walls known as the atrial septum and ventric ...
Cardiovascular
Cardiovascular

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Effects of Reduce Gap Junctional Conductance
Effects of Reduce Gap Junctional Conductance

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Chapter 19: The Heart
Chapter 19: The Heart

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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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