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The 12-Lead ECG Placement of Electrodes Placement of Electrodes
The 12-Lead ECG Placement of Electrodes Placement of Electrodes

... – 4th interspace, either side of sternum – between V2 & V4 – 5th interspace, midclavicular – 5th interspace, anterior axillary line ...
Learning Objectives
Learning Objectives

...  Understand the interaction between cardiovascular and respiratory systems  Identify/describe internal and external structures of the heart (cardiac cycle/conduction system)  Describe/explain the events during the cardiac cycle directly linked to the conduction system of the heart  Definitions/r ...
Interesting Case
Interesting Case

... involving bilateral posterior parietal lobes at occipital junction • Small SAH right frontal lobe • No midline shift ...
Advanced ECG Interpretation
Advanced ECG Interpretation

... to an Asian-specific sequence in the promoter region of SCN5A (Bezzina, 2005). In Asia (eg, the Philippines, Thailand, Japan), Brugada syndrome seems to be the most common cause of natural death in men younger than 50 years. Brugada syndrome is 8-10 times more prevalent in men than in women, ...
pulse oximeter and cardiac monitor handout
pulse oximeter and cardiac monitor handout

... Cardiac Monitoring: (ECG Monitor) Initiation of cardiac monitoring is a very important step in the treatment of a patient. Most monitors are cardiopulmonary monitors, this allows the medical team to assess the patient in multiple ways (i.e. EKG, pulse, pulse oximetery, respiratory rate, blood pressu ...
Skills Lab # 5: Notes - LSU School of Medicine
Skills Lab # 5: Notes - LSU School of Medicine

... Cardiac Monitoring: (ECG Monitor) Initiation of cardiac monitoring is a very important step in the treatment of a patient. Most monitors are cardiopulmonary monitors, this allows the medical team to assess the patient in multiple ways (i.e. EKG, pulse, pulse oximetery, respiratory rate, blood pressu ...
CONGESTIVE HEART FAILURE IN DOGS
CONGESTIVE HEART FAILURE IN DOGS

... ...
How to Read ECG - sha
How to Read ECG - sha

... block is present, the QRS complex may look like a (W) shape rS- in V1 and/ or an (M) shape – RsR wave- in V 6 • New onset LBBB with chest pain consider Myocardial infarction • Not possible to interpret the ST segment ...
the ECG - HumanPhysiology.Academy
the ECG - HumanPhysiology.Academy

... AV-node is quite a weak link between the atria and the ventricles. What would happen if the impulse took longer than normal to propagate through the AV-node and reach the ventricles? Answer: the PQ-time would be longer than normal. And that is exactly what a cardiologist does when analyzing an ECG; ...
Section 2: Assessment Tools and Diagnostic Testing
Section 2: Assessment Tools and Diagnostic Testing

... into a life threatening arrhythmia. ...
Heart Block
Heart Block

... o Type 1 (aka Mobitz 1, Wenkebach): Progressive prolongation of PR interval with o o ...
Module Description Template
Module Description Template

Electrical Activity of the Heart / The ECG
Electrical Activity of the Heart / The ECG

... - Q-T interval: time from start of ventricular depolarization to the end of ventricular repolarization - T-P segment: time from the end of ventricular repolarization to the onset of atrial depolarization - R-R interval: interval of time between successive cardiac cycles Electrode Placement • A lead ...
Acute Coronary Syndrome
Acute Coronary Syndrome

... flowsheet, and you notice that it looks different from the previous shift; OR any arrhythmias or changes in rhythm ...
close
close

... • The cells of the SA node set the heart rate because their rhythm is fastest. • They set the pace. • If the SA node is damaged, the other pacemakers still function, the pace lowers. ...
second-degree_heart_block_(mobitz_i)
second-degree_heart_block_(mobitz_i)

... • The heart of the dog or cat is composed of four chambers; the top two chambers are the right and left atria and the bottom two chambers are the right and left ventricles • In order to pump blood to the lungs and body, the heart must work in a coordinated fashion; the normal control or “pacemaker” ...
Second-Degree Heart Block (Second-Degree Atrioventricular Block
Second-Degree Heart Block (Second-Degree Atrioventricular Block

... • The heart of the dog or cat is composed of four chambers; the top two chambers are the right and left atria and the bottom two chambers are the right and left ventricles • In order to pump blood to the lungs and body, the heart must work in a coordinated fashion; the normal control or “pacemaker” ...
Atrial Arrhythmias Atrial fibrillation
Atrial Arrhythmias Atrial fibrillation

The wave of depolarization initiated by the SA node is
The wave of depolarization initiated by the SA node is

... - right arm (R): red - left arm (L): yellow - left foot (F): green - right foot: black – the grounding electrode The limb electrodes can be far down on the limbs avoiding bony prominences or close to the hips/shoulders, but they must be symmetrical. ...
Author Chia Boon Lock Publisher World Scientific Publishing Co Pte
Author Chia Boon Lock Publisher World Scientific Publishing Co Pte

... Chapter 3 tackles an equally important topic, the ability to differentiate ischaemic from nonischaemic ST-T wave changes, which include normal variants, early repolarisation changes, pericardial disease, ventricular hypertrophy, nonischaemic cardiomyopathy, acute pulmonary embolism, electrolyte diso ...
long qt syndrome - information sheet
long qt syndrome - information sheet

... abnormal electrical activity in the heart. It affects mostly children and young adults with frequent faints or even sudden death. The most common form of LQTS is inherited in a dominant pattern, which means that each child of an affected parent has a 50% chance of inheriting the disorder. Once a dia ...
Electrical_Injury-Induced_High_Degree_AV_Block_Final
Electrical_Injury-Induced_High_Degree_AV_Block_Final

Click here for presentation
Click here for presentation

... QRS > 120 ms Findings due to slow, rightward spread of ventricular depolarization from LV Can occur in structurally normal heart or any condition that affects R heart R wave: LV activation ...
EСG
EСG

... The PR Interval: Following the P wave is the PR segment. (NOTE: the PR segment and the PR interval are NOT the same thing.) The PR segment is not routinely measured, but may be commented on if it is depressed or elevated. During the PR segment, the electrical wave moves slowly through the atrioventr ...
PreLab Questions PreLab Questions Score: List the structures of the
PreLab Questions PreLab Questions Score: List the structures of the

... time from the end of ventricular depolarization to the onset of ventricular repolarization ...
< 1 ... 742 743 744 745 746 747 748 749 750 ... 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.
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