ECG changes in heart failure ppt

Heart Failure Systolic vs. Diastolic High vs. Low Output Right vs. Left Sided Acute vs. Chronic Cardiac vs. Non-cardiac Forward vs. Backward Dilated vs. Hypertrophic vs. Restrcitive Compensated vs. Decompensated Heart Failure Paradigms Epidemiology Heart Failure: The Problem 0 2 4 6 8 10 12 1991 2000 2037 Heart Failure Patients in the US (Millions Several ECG findings are, however, experienced in cases with heart failure as a result of cardiac chamber enlargement and other related changes. Left atrial enlargement is known to cause characteristic P wave changes, which sometimes show parallel course with the clinical state. ECG criteria for atrial enlargement are critically reviewed ECG 1. A NOOB'S GUIDE TO E C G drkupe.blogspot.com drkupe Irfan Ziad MD UCD 2. Electrocardiography- is transthoracic interpretation of the electrical activity of the heart over time captured and externally recorded by skin electrodes for diagnostic or research purposes on human hearts

[Electrocardiogram in heart failure

2. Significance of ECG • ECG is a simple non invasive tool to assist in the diagnosis of congenital heart disease. • In arrhythmias-no substitute • In CHD assists in - 1. Diagnosis 2. Severity of the condition 3. Complications 4. Associated conditions. 3. OVERVIEW • Normal ECG changes in children • Situs & Ventricular position. HOW TO REPRT AN ECG Ecg strip should be correctly labelled(the patients particular andall the lead markings) The ecg recording should be described under the following heads:• Heart rate• Rythem• Various conduction intervals (pr interval ,qt interval)• Description of QRS complex ,ST segment and T waves• Cardiac axis• Any abnormal.

ECG - SlideShar

RIGHT AND LEFT SIDED HEART FAILURE • Right sided heart failure is characterised by the presence of peripheral edema, raised JVP and hypotension and congestive hepatomegaly. • Left sided heart failure - pulmonary edema is the striking feature. Other signs are tachypnea, tachycardia, third heart sound, pulsus alternans, cardiomegaly Heart failure is the NUMBER 1 cause of hospitalization for patients aged >65 years4. 50% of heart failure patients die within 5 years from diagnosis5. Heart failure did cost 108 billion US dollars in 2012 worldwide6. Mozaffarian D et al. Circulation. 2015;131(4):e29-e322. Mosterd A et al. Heart. 2007;93(9):1137-1146 •ECG changes •Rise and fall of serum biomarkers (CK-MB, troponin) Brady, Harrigan, et al. ECG in Emergency Medicine and Acute Care. 1st Ed. Defining ST Elevation •Minnesota Code -≥1 mm ST elevation in one or more of leads I, VT, heart block, myocardial rupture, cardiogenic shock or reinfarction N Engl J Med 1993;328:981-8 Heart failure is a major public health problem worldwide. While the incidence of coronary heart disease and acute myocardial infarction has been reduced by approximately 50% during the past few decades, the incidence of heart failure has remained stable. New data actually suggest that the incidence of heart failure among young adults has increased in recent years (Nabel et al, Savarese et al)

ECG VOLTAGE AND CONGESTIVE HEART FAILURE 27 ECG Changes and Voltage Attenuation in Congestive Heart Failure John E. Madias, MD ABSTRACT The electrocardiogram (ECG) is invaluable in providing diagnosis, prognosis, and information for decision making in the management of patients with congestive heart failure (CHF) Hospital Discharges*for Congestive Heart Failure by Sex. PowerPoint Presentation Author: David Brentz, Design and Media Services 345:1291-1297 PowerPoint Presentation PowerPoint Presentation CK Friedberg on Hypertension Diseases of the Heart 1966 CVD Risk Imposed by ECG-LVH Framingham Study 36-yr. Follow-up Smoking Statement Issued in. An electrocardiogram, or ECG, is a test that records the rhythm and electrical activity of the conduction system of your heart. It's this electrical activity that makes your heart contract, so by measuring it, any problems with your heart's rate or rhythm can be identified. An ECG is painless and only takes about 5 minutes Introduction. Heart failure (HF) is a major public health problem. Despite advances in treatment and improved survival in recent decades, the annual mortality for HF remains high, reaching proportions of all adult deaths of 40.5% in men and 59.5% in women. 1 The diagnosis of HF is frequently made late, only when patients develop acute symptoms, 2 making noninvasive, accurate, and cost. PowerPoint is the world's most popular presentation software which can let you create professional ECG (Heart Blocks) powerpoint presentation easily and in no time. This helps you give your presentation on ECG (Heart Blocks) in a conference, a school lecture, a business proposal, in a webinar and business and professional representations.. The uploader spent his/her valuable time to create.

electrocardiogram (Ecg) in CONGENITAL HEART DISEASE

Since the introduction of electrocardiographic (ECG) monitoring in hospital units >40 years ago, 1 the goals of monitoring have expanded from simple tracking of heart rate and basic rhythm to the diagnosis of complex arrhythmias, the detection of myocardial ischemia, and the identification of a prolonged QT interval. During the same 4 decades, major improvements have occurred in cardiac. Underlying heart disease must be ruled out among persons without previously known heart disease. The procedure must be individualized and guided by ECG, anamnesis and findings from physical examination. Rather few otherwise healthy individuals necessitate treatment. Among those with heart disease, the proclivity to treat should be higher Objective To study abnormalities in the resting ECG as independent predictors for all cause, cardiovascular disease (CVD), and coronary heart disease (CHD) mortality in a population based random sample of men and women, and to explore whether their prognostic value is different between sexes. Design and subjects An age and sex stratified random sample was selected from the total Belgian. 1. Define heart failure as a clinical syndrome 2. Define and employ the terms preload, afterload, contractilty, remodeling, diastolic dysfunction, compliance, stiffness and capacitance. 3. Describe the classic pathophysiologic steps in the development of heart failure. 4. Delineate four basic mechanisms underlying the development of heart.


  1. Section Content. 0% Complete 0/8 Steps. Tricuspid valve stenosis. Tricuspid regurgitation (TR/TI) Pulmonary valve regurgitation. Pulmonary valve stenosis. Mitral valve regurgitation. Mitral valve stenosis. Aortic valve regurgitation
  2. 1 INTRODUCTION. Mitral valve regurgitation (MR) contributes significantly to morbidity and mortality of heart failure and is the second most frequent indication for valvular repair. 1 With advances in catheter-based mitral valve repair using an edge-to-edge repair strategy (PMVR), a nonsurgical treatment option has successfully been established in clinical practice (MitraClip)
  3. Another large population-based study identified PTFV1 as an ECG marker associated with an increased risk of all-cause, cerebrovascular disease and ischemic heart disease mortality [16]. The pathophysiologic explanation of hypertension effect links the diastolic dysfunction occurrence with left atrial pressure changes resulting from elevated.

Heart failure - SlideShar

  1. The resting electrocardiogram (ECG) furnishes essential information for the diagnosis, management, and prognostic evaluation of patients with congestive heart failure (CHF). Almost any ECG diagnostic entity may turn out to be useful in the care of patients with CHF, revealing the non-specificity of the ECG in CHF
  2. ESC Clinical Practice Guidelines. This document provides practical, evidence-based guidelines for the diagnosis and treatment of heart failure. Topic (s): Cardiac Resynchronization Therapy (CRT) Chronic Heart Failure. Acute Heart Failure. Cardiovascular Pharmacotherapy. Cardiovascular Nursing. Heart Failure
  3. If the initial ECG is non-diagnostic, it may need to be repeated at frequent intervals to detect evolving changes of STEMI. Additional chest leads (V 7-9) and right ventricular leads may also be helpful. Too early a measurement of the cardiac biomarkers can sometimes result in misleadingly low levels

A VAD is a Mechanical Circulatory Support (MCS) device designed to restore blood flow and improve survival, functional status, and quality of life for those suffering from advanced heart failure. The device is implanted in parallel with the heart, taking over a majority of its circulatory function. Multiple devices in use. No age limit. VAD. • Heart's dominant pacemaker • Ability of SA node to generate pacemaking stimuli is known as automaticity • Depolarization of atria detected by electrodes • Noted as P wave on EKG - should not be more than 1 box wide or 1 box tall • Understood as atrial depolarizatio STEMI: ECG changes = injury through the myocardium Area of necrosis penetrates full heart failure decreases with sedation Blood pressure may fall below 90 immediately Nusing Management Patients with CVD Part 2 Myocardial Infarction1.ppt • ECG is the mainstay of diagnosing STEMI which is a true medical emergency • Making the correct diagnosis promptly is life-saving • If the clinical picture is consistent with MI and the ECG is not diagnostic serial ECG at 5-10 min intervals • Several conditions can be associated with ST elevatio Interpreting EKG Rhythm Strips Step 1 - Heart Rate Methods to determine heart rate The 6 second method Denotes a 6 second interval on EKG strip Strip is marked by 3 or 6 second tick marks on the top or bottom of the graph paper Count the number of QRS complexes occurring within the 6 second interval

Heart failure: Causes, types, diagnosis - ECG & ECH

Various ECG changes are associated to the spectrum of thyroid dysfunction,10 11 and they are potentially critical as even subtle ECG changes have prognostic importance.12 13 Important ECG changes described in hypothyroidism are sinus bradycardia, prolonged QTc interval, changes in the morphology of the T-wave, QRS duration and low voltage.10 11. Introduction. Chronic left ventricular systolic dysfunction (LVSD) represents the final stage in most heart diseases. It has a prevalence of 2% of the entire population and 10% of the geriatric population (75+), 1-3 many asymptomatic, undetected, and untreated. 4-12 The number of senior citizens increases, and consequently LVSD also increases. 13-18 LVSD may severely affect functional capacity. Pericarditis, myocarditis and perimyocarditis: ECG changes and clinical features. The pericardium is a double-walled sac in which the heart and the roots of the great vessels are contained (Figure 1). The pericardial sac encloses the pericardial cavity which contains pericardial fluid

Electrocardiogram (ECG) & Heart Failur

  1. D. Systolic heart failure: Systolic heart failure can explain many of the patient's findings, including dyspnea on exertion, elevated central venous pressure, and peripheral edema. However, systolic failure is also associated with crackles on pulmonary auscultation and an S 3 , which are absent in this patient
  2. The 12-lead ECG shows sinus rhythm with ST-segment-elevation in leads I and aVL and ST-segment-depression in leads III and aVF followed by the large bizarre T waves. The differential diagnosis for ST-segment-elevation includes conditions such as acute myocardial infarction, early repolarization, left ventricular hypertrophy, left bundle.
  3. If the patient has a new irregular heart rate or an abnormally fast or slow heart rate, obtain a 12-lead ECG and look for an irregularly irregular rhythm and fibrillation (f) waves, the two hallmarks of AF. Perform a thorough physical assessment because patients can rapidly become hemodynamically unstable or develop worsening heart failure
  4. suggest heart failure, complex ventricular arrhythmias, propriate in patients who have no change in clinical status ECG results, pharmacologic stress testing with radionu
  5. Heart failure is a clinical syndrome that results when the heart is unable to provide sufficient blood flow to meet metabolic requirements or accommodate systemic venous return. This common condition affects over 5 million people in the United States at a cost of $10-38 billion per year. Heart failu
  6. ECG changes occur in Chronic Obstructive Pulmonary Disease (COPD) due to: The presence of hyperexpanded emphysematous lungs within the chest. The long-term effects of hypoxic pulmonary vasoconstriction upon the right side of the heart, causing pulmonary hypertension and subsequent right atrial and right ventricular hypertrophy (i.e. cor pulmonale)
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The ECG pattern may vary over time: Patients with symptomatic Brugada syndrome may have a non-diagnostic ECG at the time of assessment (e.g. Type 2 or 3 pattern; even a normal ECG). A diagnostic ECG may be produced in these patients by administration of a sodium-channel blocking agent, typically a class I antiarrhythmic such as flecainide or. Heart failure 1: pathogenesis, presentation and diagnosis. 21 August, 2017. Heart failure is a common cause of hospital admissions and is increasing in incidence. Part one of this three-part series sums up why it happens and how to diagnose it. Abstract abnormalities seen as ST-segment changes on the surface ECG. Chest pain is a late manifestation of this cascade. The severity of left ventricular dysfunction, ECG changes, and clinical presentation are dependent on the extent and severity of hypoperfusion. Figure 1 presents the ischemic cascade and the role of standard noninvasive imagin Cardiac instability is common in critically ill patients, and there are a myriad reasons for this instability. This chapter begins with a discussion of cardiovascular assessment and monitoring, and then explores the management of patients with hypotension and hypertension, and considers the different forms of shock that may occur in critically ill patients

The ECG criteria to diagnose left ventricular hypertrophy, or LVH, on a 12-lead ECG is discussed including Cornell criteria, Sokolow-Lyon criteria and the Romhilt-Estes system Heart failure (HF) is a debilitating condition that is characterised by shortness of breath, fatigue and exercise intolerance. HF is a clinical syndrome that can result from any structural or functional cardiac disorder that impairs the ability of the ventricle to fill with or eject blood at rest or during physical activity Basic EKG interpretation. 1. Heart rate: The standard paper speed is 25 mm (5 large squares)/sec. This means that if the interval between two beats (R-R) is 5 large squares, the HR is 60 beat/min. The HR may be counted by simply dividing 300 by the number of the large squares between two heart beats (R-R) 2016 AHA Scientific Statement on Chronic Heart Failure in Congenital Heart Disease; RVH is diagnosed on ECG in the presence of a R/S ratio of greater than 1 in lead V1 in the absence of other.

These changes are the net result of decreased serum T 3 levels on both genomic and nongenomic mechanisms on the heart and vasculature in the setting of congestive heart failure. 12,24,25 Reduced serum T 3 is a strong predictor of all-cause and cardiovascular mortality and, in fact, is a stronger predictor than age, left ventricular ejection. Summary. Congestive heart failure (CHF) is a clinical condition in which the heart is unable to pump enough blood to meet the metabolic needs of the body because of pathological changes in the myocardium.The three main causes of CHF are coronary artery disease, diabetes mellitus, and hypertension.These conditions cause ventricular dysfunction with low cardiac output, which results in blood. Heart failure affects an estimated 4.9 million Americans,1 or 1 percent of adults 50 to 60 years of age and 10 percent of adults in their 80s.2 Each year, about 400,000 new cases of heart failure.

ECG in Congenital Heart Disease. Congenital Heart Disease can result in ECG changes, often related to atrial or ventricular overload and enlargement. Below a list of relatively common forms of congenital heart disease and their potential ECG changes. Adapted from Khairy et al. [ 1 Heart failure is common in adults, accounting for substantial morbidity and mortality worldwide. Its prevalence is increasing because of ageing of the population and improved treatment of acute cardiovascular events, despite the efficacy of many therapies for patients with heart failure with reduced ejection fraction, such as angiotensin converting enzyme (ACE) inhibitors, angiotensin receptor. However, in patients with heart failure or CKD or those on dual RAAS blockade, the incidence of hyperkalemia was in the 5-10% range [9]. Clinical trials in heart failure patients have reflected variable rates of hyperkalemia. Hyperkalemia (defined as >5.5 mEq/l) in the SOLVD trial occurred in 7.8% of patients in the enalapril treatment arm [10] We presume ECG fails miserably against echocardiography for assessing hemodynamics , while echocardiogram has little value when it comes to studying electrophysiology . Ironically , we often ignore the fact , ECG can provide important long-term hemodynamic data . The pattern of chamber enlargement give us vital clues to the prevailing hemodynamic

Electrocardiographic Predictors of Heart Failure With

2.4 Clinical presentation: Auscultation reveals irregular heart rhythm which varies with respiration. 2.5 ECG : ECG reveals sinus rhythm with variation in P-P interval preceding the change in R-R intervals without any significant ch ange in P-R interval (Figure 1) In the setting of ongoing symptoms and electrocardiogram (ECG) changes, nitrates titrated to 10% reduction in blood pressure and symptoms, beta blockers, and heparin are all indicated. If the patient continues to have persistent signs and/or symptoms of ischemia, addition of a glycoprotein IIb/IIIa inhibitor should be considered Heart failure. Repeat arrhythmias can lead to a rapid decline in the ability of the lower chambers to pump blood. Heart failure is especially likely to develop or to grow worse as a result of arrhythmia when you already have heart disease. Stroke. This can occur in some patients who have atrial fibrillation The exercise stress test -- also known as an exercise electrocardiogram, treadmill test, graded exercise test, or stress EKG -- is used most often. It lets your doctor know how your heart responds. ECG Examples. Example 1. Baseline ECG of a patient with Arrhythmogenic Right Ventricular Dysplasia (ARVD), demonstrating: T-wave inversion in precordial and inferior leads, without RBBB pattern. Epsilon wave in V1. Localised widening of QRS in V1-2. Example 2. Right Ventricular Outflow Tract (RVOT) Tachycardia, demonstrated by

Holter monitoring of ECG methods of evaluation of daily changes of heart rate variability spectral parameters . Melezhik Y. P., Yabluchansky N. I. Faculty of fundamental medicine ; Karazin Kharkov National University; 2 Aim of the work. To study the features of daily changes of heart rate variability spectral domain measures i Dr.Sukhbindar Sibia. Yes, Persons with normal ECG, Blood pressure and Cholesterol can have heart problem. Other tests should be done to rule out heart disease if there is: 1. Shortness of breath : Breathlessness or shortness of breath is commonly encountered in patients with heart disease or heart failure. It is also a warning sign of heart attack People with diabetes are also more likely to have heart failure. Heart failure is a serious condition, but it doesn't mean the heart has stopped beating; it means your heart can't pump blood well. This can lead to swelling in your legs and fluid building up in your lungs, making it hard to breathe ECG Pearl. There are no universally accepted criteria for diagnosing RVH in the presence of RBBB; the standard voltage criteria do not apply. However, the presence of incomplete / complete RBBB with a tall R wave in V1, right axis deviation of +110° or more and supporting criteria (such as RV strain pattern or P pulmonale) would be considered suggestive of RVH

Free Download ECG (Heart Blocks) PowerPoint Presentation

An electrocardiogram also termed an ECG or EKG (K means kardia for heart in Greek) or a 12 lead ECG. is a simple non-invasive test that records the heart's electrical activity.. The ECG machine is designed to recognise and record any electrical activity within the heart.; It provides information about the function of the intracardiac conducting tissue of the heart and reflects the presence of. Congestive heart failure occurs when the cardiac output is not adequate enough to meet the demands of the body. This can occur for several reasons, as congestive heart failure is the predominant.

ECG Diagnosis: Hyperkalemi

In patients with organic heart disease and an abnormal baseline ECG, bradycardia may be the only new ECG abnormality. ECG changes have a sequential progression, which roughly correlate with the. The pleural rub cannot be heard when respiration is suspended. ECG changes typically occur in 4 stages 1: Stage 1 is characterized by diffuse upward concave ST-segment elevation with concordance of T waves, ST-segment depression in aVR or V 1, and low voltage. The PR-segment depression is usually seen in the leads with ST-segment elevations The most commonly used ECG criteria to diagnosed left ventricular hypertrophy (LVH) is below: Cornell criteria: Add the R wave in aVL and the S wave in V3. If the sum is > 28 mm in males or > 20.

[Changes in the ECG in chronic heart failure and after

June 17, 2021. Taking advantage of subtle changes caused by acute SARS-CoV-2 infection, artificial intelligence (AI)-enhanced ECG may prove useful as a way to screen for—and exclude—COVID-19, a study suggests. In an initial test group, in which about one-third of patients had tested positive for the virus, the AI algorithm excluded acute. • Heart Rate • Rhythm • Intervals • Axis • Voltage • R Wave Progression • Q Wave ECG changes in V2 are due to: Ant ischemia or Post injury . 71yo female with nausea, dyspnea and general malaise. ECG changes in V2 are due to: Ant ischemia or Post injury . Title: PowerPoint Presentatio Heart rate variability in sudden death and heart failure. (ppt) » Using Holter ECG and heart rate variability to detect sleep-disordered breathing. 2008 Preliminary results from the Sleep Heart Health Study showing the changes in different heart rate variability measures across stages of sleep in the elderly The patient suffered from commotio cordis, or concussion of the heart. His ECG was notable only for sinus tachycardia, with a rate of approximately 110 bpm. Commotio cordis is defined as an.

Cardiac Electrical and Structural Changes During Bacterial

Decreased diastolic heart function associated to presence of myositis autoantibodies. Increased heart rhythm and conduction disturbances in patients with myosit compared to healthy controls, detected by ECG . Heart findings might be induced by inflammation replaced by fibrosis, clinical significance unknown. Diederichsen et al. Arthritis Care. Describe heart failure with reduced and preserved ejection fraction and the typical presentation of symptoms. Discuss common changes in the structure of the heart that lead to 12 lead changes. Identify left and right ventricular hypertrophy, left and right atrial hypertrophy and axis deviations commonly seen in heart failure heart failure with preserved ejection fraction (HFPEF). Electrocardiography (ECG) ECG records the electrical activity of the heart. It is a simple test that identifies heart rate, conduction disturbances, myocardial ischaemia and possible structural defects. As changes may be transient, comparison with previous ECGs is always valuable. ECG aids. Heart failure is a common clinical syndrome characterized by dyspnea, fatigue, and signs of volume overload, which may include peripheral edema and pulmonary rales. Heart failure has high. 5. Describe the sequence of electrical activation of the heart. 6. Correctly label the ECG complex. 7. Demonstrate computation of the heart rate on a rhythm strip, using two different methods. 8. Identify four potential pacemakers in the heart. 9. Analyze a rhythm strip in a systematic fashion

Ecg in congenital heart disease

EKG. First let's remember how the heart is located in the chest. Note that it sits flat above the diaphragm on the left side of the chest, and is pointed slightly to the left. This is important in understanding how the precordial leads correlate to the actual heart anatomy. We see below th This ECG was obtained from an elderly man with a history of congestive heart failure. He is hypertensive at 180/102, and short of breath with bibasilar rales. LVH and LBBB cause similar ECG. An EKG might be part of a routine physical exam or it might be made use of as a test for heart disease. An EKG can be made use of to even more investigate symptoms associated with heart problems. Your doctor will identify heart failure based on your medical and family histories, a physical exam, and test outcomes

Practice Standards for Electrocardiographic Monitoring in

at July 07, 2018 Labels: ecg changes in valvular heart disease, valvular heart disease ecg 0 comments Heart Valve Terms And Related Conditions American Heart Association Valvular Heart Disease Anaesthetic Implication Third-degree atrioventricular (AV) block (also referred to as complete heart block) is the complete dissociation of the atria and the ventricles.1 Third-degree AV block exists when more P waves than QRS complexes exist and no relationship (no conduction) exists between them.2 The escape rhythm may arise within the AV node (resulting in a narrow QRS complex), or lower in the conduction system.

The patient in this case presented in acute right-sided heart failure. That said, from what I surmise — immediate cardioversion was not needed — which meant there was at least a moment to better assess clinical parameters, including the cardiac rhythm.; I favor the following m emory a id for recalling the 5 KEY parameters for arrhythmia interpretation: Watch your P s & Q s and the. Heart Anatomy and Blood Flow Quiz Changes A. Heart Anatomy- Change N to Superior VC and add C2 as Inferior VC D. Matching- Change the 2nd F to F2 - A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 78bc90-ZGFm •Conduction abnormalities (atrioventricular block or bundle-branch block) • Tachyarrhythmias • Sudden cardiac death • Coronary infiltration (leading to spasm or vasculitis) • Cardiomyopathy • Congestive heart failure • Granulomatous involvement of myocardium • Granulomatous involvement of valves, pap muscle ECG changes including QT interval prolongation have been seen in patients receiving Zofran (ondansetron). In addition, Torsade de Pointes, an abnormal heart rhythm, has been reported in some.

infarction in clinical practice Heart 2017;103:10-18. • Patients can present with a mixed picture in regards to Type I vs type II NSTEMI, and treatment strategies are frequently limited by other co-morbidities. • EKG and TTE changes from prior studies can aid in discerning the etiology. Coronary angiograph Acute myocarditis is an inflammatory disease of the heart muscle that may progress to dilated cardiomyopathy and chronic heart failure. A number of factors including the sex hormone testosterone, components of innate immunity, and profibrotic cytokines have been identified in animal models as important pathogenic mechanisms that increase inflammation and susceptibility to chronic dilated.

Even Silent Hypoglycemia Induces Cardiac ArrhythmiasHeart Failure (HF) - Cardiovascular Disorders - MerckPPT - Atrial and Ventricular HypertrophyPPT - Chapter 24 Disorders of Cardiac Function PowerPointPPT - Approach to patient with DYSPNOEA PowerPoint

Cardiac Arrest Treat the patient Initiate CPR Defibrillate Paddle Position: 13cm / 5in from the device Apex / Posterior position Evaluate the device once the patient is stable If the patient has an Implantable defibrillator The device will attempt to treat the arrhythmia You may feel a slight shock if touching the patien These include complete heart block, trifasicular block and QRS axis shift. 1, 6, 7 Hyperkalaemia may also produce ECG changes that mimic acute myocardial infarction. 8 This is of particular importance to the emergency physician as it may result in the administration of inappropriate treatment such as thrombolysis. The changes mimicking. ECG changes in PE are related to: Dilation of the right atrium and right ventricle with consequent shift in the position of the heart. Right ventricular ischaemia. Increased stimulation of the sympathetic nervous system due to pain, anxiety and hypoxia