• 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
Chapter 20 The Heart An Introduction to the Cardiovascular System
Chapter 20 The Heart An Introduction to the Cardiovascular System

... An Introduction to the Cardiovascular System • The Pulmonary Circuit • Carries blood to and from gas exchange surfaces of lungs • The Systemic Circuit • Carries blood to and from the body • Blood alternates between pulmonary circuit and systemic circuit ...
Main Title
Main Title

... Show unlabeled cross section of heart diagram using a projector. Use teacher key as a guide. Ask students, “Where do you see chambers or open spaces? Do you see anything that would act as a valve? Where are there entrances or exits?” Students discuss what direction blood flows. (Slide 9) Read Kids H ...
Atherosclerotic Heart Disease, Conduction Disturbances, and
Atherosclerotic Heart Disease, Conduction Disturbances, and

Clinicopathological Conference A 37-Year
Clinicopathological Conference A 37-Year

... are not able to know the patient's prognosis, about which there is disagreement in a small body of relevant literature. I would first like to discuss the key points of the patient's history and physical examination as they are encountered in the narrative so as to consider in a broader framework the ...
All good things must come to an end.
All good things must come to an end.

... enlargement, coronary artery status, heart valve function and cardiac rhythms are used to evaluate many of the conditions that BNP screens for: ...
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)

... A 19 year male college student, one day while coming from college on bicycle suddenly collapsed and sudden death occurred during carrying him to near hospital . There was no any history of operative procedures done on the patient.To know exact cause of death PM examination was carried out. We receiv ...
Cardiac rehabilitation - دکتر امیر هوشنگ واحدی متخصص طب
Cardiac rehabilitation - دکتر امیر هوشنگ واحدی متخصص طب

... Direct staff suppervision for 12-24 exercise session ...
XStrain™ 4D
XStrain™ 4D

... Recently, Esaote has developed 3D/4D data elaboration as a technology that provides the physician with an easier and more interactive method of viewing and analyzing cardiac function. Recently, 3D STE has been introduced by applying Speckle-tracking technologies to 3D echocardiographic images. Image ...
Automated External Defibrillators (AED)
Automated External Defibrillators (AED)

... Using an AED does not require much training, since the device provides step-by-step instructions on how to use it safely and effectively. HOW DOES IT WORK? It works by delivering a direct current shock to the heart to restore normal rhythm in a victim of sudden cardiopulmonary arrest caused by VF. ...
Transmyocardial Laser Revascularization
Transmyocardial Laser Revascularization

... After TMR, some patients feel immediate relief from angina symptoms, while in others it may take 3 or more months to feel improvement. Some patients do not have improved symptoms after TMR, but may have improved activity tolerance. After TMR, you may still be required to take medications to help you ...
Sports Participation: What Should We Tell Our
Sports Participation: What Should We Tell Our

... 1. Preparticipation Physical Evaluation. 3rd ed. Minneapolis, Minn.: McGraw-Hill/Physician and Sportsmedicine, 2005:19–23, 47–50. 2. Maron BJ, Thompson PD, Puffer JC, McGrew CA, Strong WB, Douglas PS, et al. Cardiovascular preparticipation screening of competitive athletes. A statement for health pr ...
incomplete bundle branch block
incomplete bundle branch block

... • While the ECG appearance of anterior and posterior hemiblocks differs from that of bundle branch blocks, the mechanism is essentially the same • Minimal prolongation with hemiblock, it is not enough to widen the QRS complex to any real degree but the morphology of the QRS complex does change Fast ...
EARLY HEART ATTACK CARE
EARLY HEART ATTACK CARE

... Some have gradually increasing pain with damage occurring over a period of hours. ...
Thrombolysis for STEMI Clinical Pathway
Thrombolysis for STEMI Clinical Pathway

... Clinical pathways never replace clinical judgement. Variances must be clearly documented in patient notes Every person documenting in this clinical pathway must supply a sample of their signature page 2 Presentation time / date: ......... : ......... ...
ACC/AHA/ESC AF Guidelines, 2006 Symptomatic Atrial Fibrillation!!
ACC/AHA/ESC AF Guidelines, 2006 Symptomatic Atrial Fibrillation!!

... •In patients with EF<40% and symptomatic atrial fibrillation, pulmonary vein isolation was superior to AV node ablation •In such a population, pulmonary vein isolation should be considered at experienced centers ...
Myocardium - Cloudfront.net
Myocardium - Cloudfront.net

... Equal volumes of blood are pumped to the pulmonary and systemic circuits at any ...
In this Issue
In this Issue

... from thorax examination findings and demographic information (mucous membrane color, pulse quality, heart rate and rhythm, respiratory auscultatory finds, age and breed). Selection of further diagnostic tests should be made with the potential diagnosis in mind as well as accounting for: ...
PDF - Circulation
PDF - Circulation

... examined; the role of hemoglobin in this process and the concomitant electrolyte shifts are easily understood in terms of the Bronsted theory. It is in the realm of clinically deranged acid-base balance, however, that the Bronsted theory appears most valuable. A number of pathologic conditions have ...
Atrial Flutter
Atrial Flutter

... Radiofrequency ablation interrupts the reentrant circuit in order to prevent the recurrence of atrial flutter. With recurrent symptomatic Type I atrial flutter, there is a success rate of higher than 95% with ablation.  Ablation is commonly performed at the 6:00 position on the tricuspid valve isth ...
Introduction to Data-logging - CMA
Introduction to Data-logging - CMA

... • Control the process of data collection – how long and how often to measure • Collect data according to the given settings • Plot the collected data • Display data in meters and as digital values • Analyze and process the data • Store the data. www.cma-science.nl ...
Downloaded from by guest on September 30, 2014
Downloaded from by guest on September 30, 2014

... leads to functional improvement. It is most unlikely to be the best site. The right ventricular outflow tract and in the longer term, pacing from one or more left ventricular sites should also be considered. A second problem is that of optimal atrioAssessing the results of pacing ventricular delay. ...
Isolated Form of Spongy Myocardium
Isolated Form of Spongy Myocardium

... spongiform cardiomyopathy is very infrequent. It has been included in the group of unclassified cardiomyopathies.1 In spite of its rarity, spongiform cardiomyopathy has been diagnosed with increasing frequency in the last years.2 The disease, initially described in children,3 has also been observed ...
HCM - Capital Health
HCM - Capital Health

... Blackouts or light-headedness: You may feel lightheaded or even pass out at any time. The reasons for these symptoms are not clear. It may be from an abnormal heartbeat or a drop in blood pressure. If you have these episodes, you should seek medical advice immediately. ...
20-1 Anatomy of the Heart
20-1 Anatomy of the Heart

Catheter Ablation for Cardiac Arrhythmias Other Than Atrial Fibrillation
Catheter Ablation for Cardiac Arrhythmias Other Than Atrial Fibrillation

... are caused by problems with the heart's electrical system. Each heartbeat is set in motion by an electrical signal from the sinoatrial (SA) node which is in the right atrium. Catheter ablation has been used as a treatment for cardiac arrhythmias for several decades. It eliminates arrhythmias by sele ...
< 1 ... 374 375 376 377 378 379 380 381 382 ... 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