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Heartbeat
Heartbeat

... What Makes the Heart Beat? 2. AV Node (atrioventricular node) 1. Located in wall between right atrium and right ventricle 2. Delays spreading the electrical impulses for 0.1 seconds to ensure the atria are completely empty 3. Sends impulses to specialized muscle fibers and Purkinje fibers, which co ...
SUBJECT-VERB AGREEMENT
SUBJECT-VERB AGREEMENT

... Cross out the prepositional phrase(s) in order to determine the appropriate subject and its corresponding verb. Circle the correct verb. Exercise 1: ...
Fasciculoventricular accessory pathway: A
Fasciculoventricular accessory pathway: A

... and constant degree of pre-excitation despite different PR intervals and despite different heart rates. However, a final diagnosis can be made only during electrophysiological study with observation of a short and constant HV interval despite decremental AV conduction with prolongation of the AH int ...
12 Analyzing Heart EKG LQ
12 Analyzing Heart EKG LQ

... An electrocardiogram (ECG or EKG) is a graphical recording of the electrical events occurring within the heart. In a healthy heart there is a natural pacemaker in the right atrium (the sinoatrial node) which initiates an electrical sequence. This impulse then passes down natural conduction pathways ...
Sinus Tachycardia
Sinus Tachycardia

... morphology criteria. Once a treatment sequence is initiated, treatments can be prevented by appropriate patient use of the response buttons. Symptomatic events can also be captured by the patient via a manual recording. Manual recordings are initiated by pressing and holding the response buttons for ...
Arrhythmia During STEMI: Recognition and What to Do
Arrhythmia During STEMI: Recognition and What to Do

... • PR interval > 200ms • Usually, conduction block occurs within the AV node, especially when QRS is normal • Causes include aging, AV nodal blocking agents, increased vagal tone • Rarely requires any intervention ...
Serial ECG Analysis after Myocardial Infarction: When Heart Failure
Serial ECG Analysis after Myocardial Infarction: When Heart Failure

... blockers, and fluid management are only introduced when clinical signs of HF have become immanent[7] and the patient is already in HF stage C. Obviously, waiting for symptoms of HF implies that the process of developing HF has already been started and that potentially structural damage (ventricular ...
Palpitations - Back to Medical School
Palpitations - Back to Medical School

... • Perceived as ‘missed beats’ often followed by thud & fluttering • rate relatively slow • More commonly noticeable at rest or in bed • Often described as persistent for several hours or days • Sporadic • Reassurance • Treatment usually not required although beta-blockers can be helpful ...
c34f30ef92c9b40
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... alike? • Are the unusual QRS complexes associated with ectopic beats? ...
Ventricular Arrhythmias
Ventricular Arrhythmias

...  Many ectopic foci firing at the same time  There is no regular pattern as in Vtach  No effective cardiac output!  Requires CPR and DC shock, ie, Defibrillation ...
211 Atrial Dysrhythmias notes
211 Atrial Dysrhythmias notes

...  Measure the duration (or width) of the QRS, which should be less than 0.12 seconds.  Examine the ST segment, which should be neither elevated or depressed.  Examine the T wave, which should be upright and 1/3 the height of the QRS.  Examine the QT interval. Calculate heart rate  Count the numb ...
Adult Tachycardia
Adult Tachycardia

... · If patient has history or 12 Lead ECG reveals Wolfe Parkinson White (WPW), DO NOT administer a Calcium Channel Blocker (e.g. Diltiazem) or Beta Blockers. Use caution with Adenosine and give only with defibrillator available. · Typical sinus tachycardia is in the range of 100 to (200 - patient’s ag ...
accuracy of dobutamine stress ecg for diagnosis of coronary artery
accuracy of dobutamine stress ecg for diagnosis of coronary artery

... ETT is one of the most popular non-invasive diagnostic tests but can not be performed appropriately by all patients. Dobutamine is a pharmacologic agent used for stressing the heart during Echocardiography and cardiac scan. So in this study Dobutamine stress ECG was evaluated as an alternative to ET ...
Lymphatic System and Immunity Review
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... 5. What is the difference between the visceral pericardium and the parietal pericardium? 6. What is the purpose of chordae tendinae and papillary muscles? Where are they located? 7. What three distinct layers comprise the tissues of the heart wall? 8. What are the seven important functions of fibrou ...
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10.3 assignment answers

... 5. Draw the diagram of a normal ECG (electrocardiogram). Label P,Q,R,S,T as in Figure 10.14 and describe what happens at P, QRS, and T ...
the normal ecg in childhood and adolescence
the normal ecg in childhood and adolescence

... cardiac cycles and with no more than two or three in a 24 hour period. In both neonates and older children the longest pauses recorded were no more than 1.8–1.9 seconds in duration. As sinus arrhythmia makes it difficult to measure the resting sinus cycle length in many children, the precise mechani ...
Slide 1
Slide 1

... of each lead on the six limb leads (I, II, II, aVF, aVR, VL) 2. On the MEA diagram, draw a “3segment on each side “ on either the positive or the negative portion of each lead, according to the EKG 3. The MEA must lie within the wedge which has all six arcs spanning it. This gives you a range of 30˚ ...
The T wave: physiology and pathophysiology Meijborg, VMF
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Cardiovascular System Block (CVS 311)
Cardiovascular System Block (CVS 311)

...  Because prolonged Q-T intervals can be diagnostic for susceptibility to certain types of tachyarrhythmias, it is important to determine if a given Q-T interval is excessively long.  In practice, the Q-T interval is expressed as a "corrected Q-T (QTc)" by taking the Q-T interval and dividing it by ...
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Name of presentation

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No Slide Title
No Slide Title

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Acumen Medical Chris Eversull and Nick Mourlas – Founders By
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control of Heart beat
control of Heart beat

...  The cardiac cycle is initiated by a small ...
Using an External (Transcutaneous) Pacemaker
Using an External (Transcutaneous) Pacemaker

... provide medication if the discomfort is intolerable. 13. Set the pacing rate dial to 10 to 20 beats higher than the intrinsic rhythm. Look for pacer artifact or spikes, which will appear as you increase the rate. If the patient does not have an intrinsic rhythm, set the rate at 80 beats/minute. 14. ...
EKG Workshop – Beyond the Basics - AAIM
EKG Workshop – Beyond the Basics - AAIM

... placed on the right ankle but could be placed anywhere on the body without affecting the ECG waveform. On the other hand, interchange of its cable with the left or right arm cable affects the shape of all precordial leads (because the central terminal is changed) and of all the unipolar limb leads w ...
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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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