• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Second-Degree Heart Block (Second-Degree Atrioventricular Block
Second-Degree Heart Block (Second-Degree Atrioventricular Block

... Medications presented in this section are intended to provide general information about possible treatment. The treatment for a particular condition may evolve as medical advances are made; therefore, the medications should not be considered as all inclusive • Atropine or glycopyrrolate may be used ...
Cardio6Activity5A.pdf
Cardio6Activity5A.pdf

... Did you remember ever hearing about something called and EKG or ECG? In this activity, you will learn about something called an electrocardiogram or EKG (sometimes called ECG). An electrocardiogram records the electrical activity of the heart. Doctors use EKGs to detect and diagnose heart problems. ...
Document
Document

... uncommon in SVT ,with the exception of preexcited tachycardia .The specificity of concordant pattern for VT is >90% but sensitivity is low(20%).  Negative concordance in limb leads is another way of describing NW axis and suggests VT. ...
249 - Cardiology Online
249 - Cardiology Online

... of advanced congestive heart failure associated with a dilated cardiomyopathy and a marked intraventricular conduction delay. Recognition of a pacing system malfunction involving the ventricle in these systems is a clinical challenge. Worsening congestive heart failure may be due to progression of t ...
Atrial fibrillation
Atrial fibrillation

... • The most common type of ventricular ectopic beat is premature, causing ventricular contraction before the underlying rhythm would normally depolarise the ventricles • The resultant heartbeat morphology on the ECG often appears wider and taller than that seen with the underlying rhythm • Ventricula ...
Left Ventricular Hypertrophy
Left Ventricular Hypertrophy

... Increased limb lead QRS voltage: R in lead I plus S in lead III greater than 25 mm. Increased precordial QRS voltage: S in lead V1 plus R in either V5 or V6 greater than 35 mm. Typical ST and T abnormalities: ST depression or T wave inversion (or both) in the “lateral” leads (I, L, V4-V6) Large left ...
Chapter 13 The Heart and Heart Disease
Chapter 13 The Heart and Heart Disease

... – AV (atrioventricular) node • In the floor of right atrium near septum ...
second-degree heart block (second-degree atrioventricular block
second-degree heart block (second-degree atrioventricular block

... Medications presented in this section are intended to provide general information about possible treatment. The treatment for a particular condition may evolve as medical advances are made; therefore, the medications should not be considered as all inclusive.  Atropine or glycopyrrolate may be used ...
File
File

... − A stronger pump, since it has to pump blood to the body • Cardiac output is the volume of blood that the left ventricle pumps per minute. o Cardiac output is about 5.25 L of blood per minute in a person with an average heart rate of 70 beats per minute o The pulse is a wave effect that passes down ...
EE 4BD4 Lecture 23 - McMaster University
EE 4BD4 Lecture 23 - McMaster University

... location close to heart are especially dangerous (epicardial or endocardial electrodes from an external cardiac pacemaker) • Liquid filled catheters for blood pressure, sampling or delivery of drugs (volumetric pumps which are line powered) • Danger really only occurs when there is electrical connec ...
YH4L.St.LaurenceRegistrationForm
YH4L.St.LaurenceRegistrationForm

... which my child will receive an electrocardiogram, and may receive an echocardiogram. An electrocardiogram (also known as EKG or ECG) is a non-invasive test that measures the electrical activity of the heart and can detect certain heart abnormalities leading to sudden cardiac death. An echocardiogram ...
After load
After load

... Dr.Aso faeq salih ...
Heart Attack - Issue Insurance
Heart Attack - Issue Insurance

... obstruction to the blood supply to heart muscle. If the blood supply is cut off drastically or for a long time, muscle cells suffer irreversible injury and die. Disability or death can result, depending on how much heart muscle is damaged. The diagnosis of myocardial infarction is usually made by th ...
Ventricular Premature Contractions and Tachycardia
Ventricular Premature Contractions and Tachycardia

... Dogs with serious arrhythmias must be hospitalized and treated with intravenous lidocaine to stabilize the heart rhythm. Lifethreatening ventricular arrhythmias are less common in cats, and hospitalization is primarily needed to treat the underlying problem rather than the arrhythmia. Once the heart ...
Cardovascular System The Heart Chap. 12
Cardovascular System The Heart Chap. 12

... The electrical events that occur in the heart can be detected on the surface of the body The resulting pattern of activity is known as an ECG (or EKG) Electrocardiogram ...
Heart Lab Questions
Heart Lab Questions

... 2. What is the muscular layer of the heart is called? 3. What is the name of the sac surrounding the heart? 4. What is the function of the heart? 5. What is the function of an artery? 6. What is the function of a vein? 7. What is the specific space in the thoracic cavity where the heart is located? ...
Heart Beat and Blood Pressure
Heart Beat and Blood Pressure

... • Normal cardiac cycles (at rest) take 0.8 seconds. ...
Chapter 20
Chapter 20

... ▫Venous return has an indirect effect on heart rate by way of the atrial reflex. ▪Factors affecting the stroke volume are the differences between the EDV and ESV ▫EDV- amount of blood a ventricle contains at the end of diastole, just before contraction begins. Affected by three factors; filling tim ...
Cardovascular System The Heart Chap. 12
Cardovascular System The Heart Chap. 12

... Coronary Circulation  Myocardium receives oxygenated blood from the left & right Coronary arteries – branches off the ascending aorta  Deoxygenated blood is drained through Cardiac veins, which all eventually merge into the coronary sinus ...
Natural Excitation of the Heart
Natural Excitation of the Heart

... Natural Excitation of the Heart Triggered activities  Delayed afterdepolarizations  The amplitudes of the DADs are ...
Arrhythmia
Arrhythmia

... 1) Count # complexes in 6 second rhythm; top margin of ECG paper marked at 3 second intervals; multiply by 10 2) Count # large boxes (Big block) between two consecutive complexes; divide 300 by this number (the number of large boxes in 1 minute)…memorize a sequence….see text 3) Count number small bo ...
Rate Limiting Calcium Channel Blockers
Rate Limiting Calcium Channel Blockers

... chambers of the heart to the lower chambers. In this way it has an effect of slowing the heart beat. This is unlike beta-blocking medications that slow the heart beat by also having an effect on the adrenalin receptors in the heart. Clinical Use Anti-arrhythmic: Rate limiting calcium channel blocker ...
QRS Complex
QRS Complex

... • Special conducting bundles spread the wave of depolarization rapidly over the bundles • May have one, two or all three components : Q R S • Q wave is the first negative wave after the P wave and before the R wave. The Q wave represents activation of the ventricular septum • R wave is the first pos ...
Heart beat activity - Liberty Union High School District
Heart beat activity - Liberty Union High School District

... relaxing to pump blood through your heart. The electrical system of your heart is the power source that makes this possible. Your heartbeat is triggered by electrical impulses that travel down a special pathway through your heart: 1. SA node (sinoatrial node) – known as the heart’s natural pacemaker ...
Atrial fibrillation
Atrial fibrillation

... to a remote computer outside the stall), which improves safety during the conversion. In summary, atrial fibrillation is a cardiac disorder that may cause poor performance in racehorses. In cases of sustained atrial fibrillation of short duration without underlying heart disease, diagnosis and treat ...
< 1 ... 690 691 692 693 694 695 696 697 698 ... 762 >

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.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report