• 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
EKG Update
EKG Update

... Narrow complex tachycardia from any cause that is supraventricular such as atrial flutter, atrial fibrillation, AV nodal reentrant tachycardia, AV reciprocating tachycardia However, in lay terms it is usually used to describe most probably AV nodal reentrant tachycardia ...
Position of the Heart
Position of the Heart

Patient history
Patient history

... population? What is differential diagnostics? Synonyms for palpitations? They are signs of what diseases? What does it mean when patient complains that they are irregular? ...
Abstrak_Andro
Abstrak_Andro

... Arhytmia Division of Department Cardiology and Vascular, Faculty of Medicine Universitas Gadjah Mada – Dr. Sardjito Hospital Yogyakarta, Indonesia Background. The 12-lead electrocardiogram (ECG) is the most readily available noninvasive test for the detection of cardiac disease. Several studies have ...
The Genesis and Conduction of Cardiac Rhythm
The Genesis and Conduction of Cardiac Rhythm

... distribution of the main intra and extracellular electrolytes; Na+, K+, Ca++ and Cl-. The voltage differential between the interior and the exterior at rest (diastole) is called the Resting Potential. In myocardial cells, the interior is maintained more negative than the exterior by the extrusion of ...
N120 Quiz #1 (20 Items): REVIEW BLUEPRINT
N120 Quiz #1 (20 Items): REVIEW BLUEPRINT

... Atrial fibrillation is characterized by a total disorganization of atrial electrical activity due to multiple ectopic foci resulting in loss of effective atrial contraction. o Atrial fibrillation usually occurs in the patient with underlying heart disease, such as CAD, rheumatic heart disease, cardi ...
CardioSoft Diagnostic System Resting ECG
CardioSoft Diagnostic System Resting ECG

... physician office PC into a resting ECG device. The Cardiac Acquisition Module (CAM-14) with the CAM USB A/T interface is easily connected from the patient to your PC’s standard USB port. The CAM-14 provides high-quality ECG presentation for accurate cardiac assessment of your patients. Its outstandi ...
Volume 7 Issue 10 - Galichia Medical Group
Volume 7 Issue 10 - Galichia Medical Group

... PSVT occurs most often in infants and young adults. Most often the episodes begin in a person’s early twenties. The symptoms can stop and start rapidly, lasting a few minutes, a few hours, and can be mistaken for panic attacks or other events. Symptoms most often include anxiety, rapid pulse, shortn ...
Cardiac Rhythm - WordPress.com
Cardiac Rhythm - WordPress.com

... • By applying a large electrical shock sometimes we can convert fibrillation into a perfusing rhythm – synchrony • So must do chest compressions, oxygen, electricity ...
INFORMATION SHEET Right Bundle Branch Block (RBBB)
INFORMATION SHEET Right Bundle Branch Block (RBBB)

... There are two main conducting pathways in the heart, the left and the right bundle. In RBBB the right conducting pathway no longer functions so electrical conduction is maintained through the left bundle. RBBB can be a normal finding but it is more common in structural abnormalities of the heart suc ...
Idiopathic ventricular tachycardia in 21–year
Idiopathic ventricular tachycardia in 21–year

... Ø  Localization of ER pattern in inferior leads combining with SQTS may have likely unfavourable prognosis as the patient began to experience symptoms of palpitation during last 6 months Page § 11 ...
Dual Energy CT - WordPress.com
Dual Energy CT - WordPress.com

... – Table moves at a constant speed while the detectors continuously acquire data – Larger sections can thus be scanned in same amount of time – Slip ring technology made this possible as cord wrap around is not an issue – For rotation of 0.4s • heart frequency =60bpm, • maximum pitch=0.4 • Maximum ta ...
EKG Basics - jan.ucc.nau.edu
EKG Basics - jan.ucc.nau.edu

... any lead, the EKG machine looks at a specific combination of electrodes in order to configure the tracing that we expect to see for Lead I, II, III, aVF, aVR, aVL or for V1-V6. ...
Ventricular Fibrillation
Ventricular Fibrillation

... • Deviation from NSR – No organized atrial depolarization, so no normal P waves (impulses are not originating from the sinus node). – Atrial activity is chaotic (resulting in an irregularly irregular rate). – Common, affects 2-4%, up to 5-10% if > 80 years old ...
Intractable Ventricular Tachycardia Associated With Stress
Intractable Ventricular Tachycardia Associated With Stress

... 4. Galiuto L, De Caterina AR, Porfidia A, Paraggio L, Barchetta S, Locorotondo G, Rebuzzi AG, Crea F. Reversible coronary microvascular dysfunction: a common pathogenetic mechanism in Apical Ballooning or Takotsubo Syndrome. Eur Heart J. 2010;31:1319-1327. 5. Afonso L, Bachour K, Awad K, Sandidge ...
a pdf
a pdf

... A wide QRS complex despite sinus rhythm is the hallmark of bundle branch block. Left bundle branch block (LBBB) can cause the ECG to look extremely abnormal (see Figure 13). When faced with such an ECG – after calculating rate, rhythm, and axis – check the width of the QRS complex. If it is more tha ...
Grade 11 Biology Worksheet -2 ( Circulatory system) a)Give one
Grade 11 Biology Worksheet -2 ( Circulatory system) a)Give one

... 1) SA node is called the pacemaker of heart. 2) The atrial systole normally precedes the ventricular systole. 3) Ventricle relaxes as a closed chamber in the early phase of its diastole. 4) You can palpate the pulse on an artery in each heart beat. 5) There is no mixing of oxygenated and deoxygenate ...
Atrial Fibrillation
Atrial Fibrillation

... • Deviation from NSR – No organized atrial depolarization, so no normal P waves (impulses are not originating from the sinus node). – Atrial activity is chaotic (resulting in an irregularly irregular rate). – Common, affects 2-4%, up to 5-10% if > 80 years old ...
IX. Interpretation
IX. Interpretation

... Axis can be easily determined by using three limb leads: I, AVF, and II. If the QRS is more positive in Lead I, the axis must be between -90 and +90. If the QRS is also positive in AVF, the axis must be between 0 and +180. The intersection of these two leads is 0 to +90. Thus, if the QRS is positive ...
Tina`s 12 Lead Class Notes
Tina`s 12 Lead Class Notes

... Pathological Q-waves are greater than 0.04 seconds in duration and/or at least one-third the amplitude of the R-wave. U-waves (if seen) should be low and have the same deflection as the T-wave. S-T segment J-point is located at the end of the QRS where the T-wave begins. It should be isoelectric. If ...
A Study of Mean Electrical Axis (QRS
A Study of Mean Electrical Axis (QRS

... shift to the right occurs during inspiration and standing. Various pathological conditions e.g. ventricular hypertrophy or bundle branch blocks after QRS-axis.1 QRS-axis in infancy (from birth to 3 months of age) is usually between + 90o to 140o and during childhood (from 3 months to 12 or 16 years ...
Premature ventricular contraction (PVC), left bundle brunch block
Premature ventricular contraction (PVC), left bundle brunch block

... Premature ventricular contraction (PVC), left bundle brunch block (LBBB), and right bundle branch block (RBBB) are the three cardiac arrhythmias which can lead to or indicate the risk of heart failure. The goal of this research is to suggest an alternative way to diagnosis any potential of arrhythmi ...
Waves and Measurements
Waves and Measurements

... • Before the atria can contract, an electrical current must first stimulate the muscle cell. • For a myocardial cell to contract it must first receive an electrical stimulus. • During each phase of the cardiac cycle, a distinct pattern is produced on the EKG graph paper. ...
Cardiovascular Disorders 1. Explain how to correctly place leads
Cardiovascular Disorders 1. Explain how to correctly place leads

... Cardiovascular Disorders 1. Explain how to correctly place leads from a 12-lead electrocardiographic (ECG) monitor. 2. Explain how to correctly place additional precordial leads for diagnosing right ventricular and posterior infarctions. 3. Explain how to determine the heart's electrical axis. 4. Di ...
ECG Interpretation
ECG Interpretation

... -Lead compares potential with that of a reference point that averages total body potential. -Posterior leads – V7, V8, V9. -V4R – Measure potential on RHS of heart. Lead is placed in same position at V4 but on RHS of patient. Augmented unipolar leads: - aVR, aVL, aVF. - Compare potential with centra ...
< 1 ... 738 739 740 741 742 743 744 745 746 ... 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