• 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
left axis deviation
left axis deviation

... the number of heart beats (QRS complexes) in between 30 large boxes (6 seconds) and multiply by 10, you have beats per minute. Conveniently, ECG paper usually has special markings every 3 seconds so you don't have to count 30 large boxes. There is, however, an easier and quicker way to estimate the ...
Electrical Activity of the Heart
Electrical Activity of the Heart

Arrhythmia
Arrhythmia

... oriented, and has mild shortness of breath. On physical exam, he has a regular tachycardia at 180, and monitor shows a regular, narrow-complex tachycardia. He denies chest pain. Midway through transport, he becomes less responsive, and his blood pressure drops as he starts sweating profusely. ...
Diagnosing Left Ventricular Hypertrophy - e
Diagnosing Left Ventricular Hypertrophy - e

... forced to work against the increased pressure, causing the muscle to hypertrophy in an effort to keep up with the demand. Symptoms LVH by itself has no individual symptoms. However, LVH often results in a drop in ejection fraction, which leads to such symptoms as dyspnea on exertion, orthopnea, and ...
ECG interpretations
ECG interpretations

... HIS/purkinje system takes over as the heart’s pacemaker Treatment: pacing Rhythm: regular Rate: 20-40 bpm P wave: absent QRS: > .12 seconds (wide and bizarre) ...
ECG interpretations good
ECG interpretations good

... HIS/purkinje system takes over as the heart’s pacemaker Treatment: pacing Rhythm: regular Rate: 20-40 bpm P wave: absent QRS: > .12 seconds (wide and bizarre) ...
Electrocardiography - Frank`s Hospital Workshop
Electrocardiography - Frank`s Hospital Workshop

... electrodes necessary for a 12-lead ECG conduction pathways" and then spreads all over the ventricles. This is detected as tiny rises and falls in the voltage between two electrodes placed either side of the heart which is displayed as a wavy line either on a screen or on paper. This display indicate ...
Step 2 Review Qns OBJECTIVES FOR THIS WEEK - med
Step 2 Review Qns OBJECTIVES FOR THIS WEEK - med

... thyrotoxicosis, alcohol abuse, pericarditis, PE, and postop REMEMBER: “I SMART CHAP” Rx: • Slow down ventricular response- IV adenosine, verapamil, diltiazem, digoxin, & beta-blockers • Maintain or convert to sinus rhythm- quinidine, amiodarone, procainamide • In patients with increased M.ischemia, ...
P215 - Basic Human Physiology
P215 - Basic Human Physiology

... • Atrioventricular (AV) Node – Delays conduction to ventricles ...
Path of Cardiac Excitation Electrocardiogram
Path of Cardiac Excitation Electrocardiogram

... – Delays conduction to ventricles ...
Electrocardiagram ECG
Electrocardiagram ECG

... • This ECG has no p-waves, because the sinoatrial node is not functioning. • An ectopic focus within the ventricles takes over to ensure heart beat, but this is a life threatening arrhythmia because the etopic focus is unstable. ...
Physiology Objectives 4
Physiology Objectives 4

... o Note: recall that this is a segment because the Q and T waves are in the ventricle while the P wave is in the atrium! Interval: an event that includes a segment and one or more waves  PR interval: 0.12-0.20 sec  QT interval: 0.31 sec Complex: an event that includes more than one wave with no seg ...
A new style of defibrillator can detect abnormal heart rhythms and
A new style of defibrillator can detect abnormal heart rhythms and

... spotting and counteracting ventricular fibrillation, a uncoordinated contraction of the heart muscle which could lead on to a heart attack. A comparison between the ICDs and the S-ICD® is in motion. The 314 participants who had the SICD® implanted and new patients will be monitored to track the perf ...
Learning Resources - San Jose State University School of Nursing
Learning Resources - San Jose State University School of Nursing

... 11. What is the difference between the strip you just analyzed and sinus tachycardia and sinus bradycardia? a. Sinus tachycardia sinus tachycardia has the same characteristics as normal sinus rhythm, except the rate is ...
Paediatric ECG Interpretation
Paediatric ECG Interpretation

... V4R: 5th intercostal space, right midclavicular line V1: 4th intercostal space, right sternal border V2: 4th intercostal space, left sternal border V3: use this lead for V4R, must label as such on ECG. V4: fifth intercostal space, right midclavicular line V5: anterior axillary line, same horizontal ...
Cardiology Jeopardy
Cardiology Jeopardy

... this class of medications has been shown to decrease mortality in Class III and IV heart failure patients, they were shown in a recent study to improve mortality even in patients with class I or II NYHA heart failure ...
EP Studies
EP Studies

... principal investigator should be documented to establish the date of onset and duration of AF. 2. Patients must be hemodynamically stable defined as a screening systolic blood pressure between 90 to 160 mmHg, diastolic < 100 mmHg. 3. Low risk of thromboembolic potential as documented by • Subjects w ...
PBL- Case 1: Cardiac Arrhythmias Pre
PBL- Case 1: Cardiac Arrhythmias Pre

... High prevalence of CAD, CHF and valvular disease and calcification (common in older patients) puts them at higher risk of atrial fibrillation. Cardiac valvular stenosis or regurgitation caused by either rheumatic or age related degenerative changes increases left atrial pressure and results in the e ...
EKG Training - 2017 HSTEA Winter Conference
EKG Training - 2017 HSTEA Winter Conference

... • V5 – at anterior axillary line at same horizontal level as V4 • V6 – at midaxillary line on the same horizontal level as V4 and V5 ...
P wave morphology
P wave morphology

... The endocardial myocytes need a little more time to repolarize (about 22 ms). This difference causes an electrical current from the endocardium to the epicardium, which reads as a positive signal on the ECG. ...
case report1
case report1

... However, group of patients may progress into permanent LBBB and very rarely into atrioventricular block with the consequent need for permanent pacemaker implantation.10 In summary we report an unusual case of a highly trained athlete who presented with chest pain and conduction abnormalities on ECG. ...
Obtaining a High Quality ECG and Basic ECG
Obtaining a High Quality ECG and Basic ECG

... ● RA- Right arm (on the inside, halfway between wrist and elbow) ● LA- Left arm (on the inside, halfway between wrist and elbow) ● V1- 4th intercostal space, at right sternal margin ● V2- 4th intercostal space, at left sternal margin ● V3- Midway between V2 and V4 ● V4- 5th intercostal space at left ...
Heart Physiology
Heart Physiology

... - Atrioventricular Bundle (Bundle of His) * Only electrical pathway between atria & ventricles (C.T.Block) * Interventricular septum * Carries action potential through interventricular septum to: ...
Name_____________________________________ Per_____
Name_____________________________________ Per_____

... Explain how impulses travel through each of the following areas of the heart. 1) Sinoatrial node ...
Pediatric Dysrhythmias Board Review
Pediatric Dysrhythmias Board Review

... Need post conversion EKG – identify those with WPW syndrome ( 25 % pts with SVT) Will also need an echo – identify structural problems Radiofrequency catheter ablation – Frontline treatment – Very effective – Cutoff points usually are 5 y.o. and 15 kg, unless severe SVT ...
< 1 ... 733 734 735 736 737 738 739 740 741 ... 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