Stock image P Wave
The QT Interval Of ECG Is From The Beginning Of QRS Wave To The End Of T Wave, Representing The Total Time Of Ventricular Depolarization And Repolarization.
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The Illustration Shows The Two Patterns Of Ventricular Tachycardia Episodes.The Green Circle Represents Sinus Rhythm. Picture A Shows Paroxysmal Episodes Of Ventricular Tachycardia, And Picture B Shows Short Bursts.
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Sometimes, Left Ventricular Hypertrophy With Tall T Waves Is Easily Misdiagnosed As Hyperkalemia And Hyperacute T Waves, And ECG Needs To Be Carefully Identified In Combination With Clinic.
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A 14-year-old Leukemic Child Had A Sudden Wide QRS Tachycardia With A Frequency Of 167 Bpm, And The Rhythm Was Regular. After Anti-arrhythmia Treatment, The Patient Recovered To Sinus Rhythm.
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R Wave Greater Than S Wave Is Judged To Be Positive; R Smaller Than S Is Judged To Be Negative; R Equal To S Amplitude Is Judged To Be Equipotential.
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ECG In Atrial Fibrillation (AFib), A 3D Illustration Depicting Irregular Rhythm, Absent P Waves, And Rapid, Chaotic Atrial Activity, Posing A Risk Of Palpitations And Stroke.
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Atrial Focal Originating In The Left Upper Pulmonary Vein, With An Upright P Wave In V1 And Wide Duration, Inverted P Wave In Lead AVL And An Upright P Wave With Notch In Inferior Leads.
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The Effective Refractory Period Of The Ventricular Muscle Is Equivalent To The Time From The Onset Of QRS To The Peak Of The T Wave On The ECG.
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The Presence Of Atrioventricular Dissociation In Wide-complex Tachycardia Is Highly Suggestive Of Ventricular Tachycardia.
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When Sinus Arrest Occurs, The Electrocardiogram Will Show A Long P-P Interval, Which Is Not Multiples Of The Basal Sinus Cycle, Including Physiological And Pathological Reasons.
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ECG In Atrial Fibrillation (AFib), A 3D Illustration Depicts Irregular Rhythm, Absent P Waves, And Rapid, Chaotic Atrial Activity, Posing A Risk Of Palpitations And Stroke.
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ECG In Atrial Fibrillation (AFib), A 3D Illustration Depicts Irregular Rhythm, Absent P Waves, And Rapid, Chaotic Atrial Activity, Posing A Risk Of Palpitations And Stroke.
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Abnormal ECG Refers To Changes In Depolarization Waves And Or Repolarization Waves, Most Of Which Are Pathologic And Few Are Physiological.
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When Ectopic Impulses From The Anterior Wall Of The Right Atrium Produce A Completely Negative P Wave In Lead V1, The Posterior Wall Ectopic Impulse Produces A Positive And Negative Biphasic P Wave.
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Sinus Heart Rate Less Than 60 Beats Per Minute In Adults Is Called Sinus Bradycardia. A Sinus Heart Rate Of 40 To 50 Beats Per Minute Is Moderate Sinus Bradycardia, And Patients May Have Symptoms Such As Palpitations And Dizziness.
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When The Limb Leads Are Reversed, It Is Common For The Left Upper Limb And The Right Upper Limb To Be Reversed, Affecting The ECG Pattern Of The Limb Leads.
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When Ectopic Focal Areas In The Atria Are Located In The Atrial Septum, The Left Atrium And Right Atrium Can Be Excited At The Same Time, Producing A Very Narrow P Wave.
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Ventricular Tachycardia Originating From The Right Ventricular Outflow Tract Can Be Sustained Or Short-burst, And Is A Benign Idiopathic Ventricular Tachycardia.
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Sometimes, There May Be Slight Non-specific Changes And Normal Variations In The Electrocardiogram, Which Are Often Due To Physiological Reasons And Have No Clinical Therapeutic Significance.
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Abnormal ECG Refers To Changes In Depolarization Waves And Or Repolarization Waves, Most Of Which Are Pathologic And Few Are Physiological.
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When The Duration Of The P Wave Exceeds 120 Ms, The Amplitude Of The Limb Leads Exceeds 2.5 Mm, And The Amplitude Of The Thoracic Leads Exceeds 1.5 Mm, It Is Interpreted As A Biatrial Abnormality.
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When Intraatrial Excitation Is Transmitted From One Atrium To The Other, A Wider Duration Of P Waves Are Generated, Such As Sinus Rhythm, Lateral Left Atrial Focal, Etc.
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When Intraatrial Excitation Is Transmitted From One Atrium To The Other, A Wider Duration Of P Waves Are Generated, Such As Sinus Rhythm, Lateral Left Atrial Focal, Etc.
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Abnormal ECG Refers To Changes In Depolarization Waves And Or Repolarization Waves, Most Of Which Are Pathologic And Few Are Physiological.
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Sometimes, The P Wave Amplitude Of Sinus Rhythm Is So Low That It Is Close To An Isopotential And Can Easily Be Mistaken For A Borderline Rhythm.
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Male, 10 Years Old, Was Clinically Diagnosed With Tetralogy Of Fallot. ECG Shows An Elevated P Wave Amplitude In Thoracic Leads, Suggesting Right Atrial Abnormality.
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Impulse Encounter Effective Refractory Period Will Lead To Conduction Interruption, And Encounter Relative Refractory Period Will Lead To Conduction Delay.
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A 2:1 Left Bundle Branch Block Is Considered When Complete Left Bundle Branch Block Alternates With Normal QRS Complexes And The PR Interval Is Fixed.
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Cardiac Conduction Scheme. Electrocardiogram Tracing Correlated To The Cardiac Cycle
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A 67-year-old Man Presents With Heart Palpitations, Numbness Of The Lips And Nausea After Consuming Poisonous Shellfish. ECG Showed Sinus Bradycardia.
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The Presence Of Atrioventricular Dissociation In Wide-complex Tachycardia Is Highly Suggestive Of Ventricular Tachycardia.
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Sinus Heart Rate Less Than 60 Beats Per Minute In Adults Is Called Sinus Bradycardia. A Sinus Heart Rate Of 40 To 50 Beats Per Minute Is Moderate Sinus Bradycardia, And Patients May Have Symptoms Such As Palpitations And Dizziness.
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When The Limb Leads Are Reversed, It Is Common For The Left Upper Limb And The Right Upper Limb To Be Reversed, Affecting The ECG Pattern Of The Limb Leads.
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ECG In Atrial Fibrillation (AFib), A 3D Illustration Depicts Irregular Rhythm, Absent P Waves, And Rapid, Chaotic Atrial Activity, Posing A Risk Of Palpitations And Stroke.
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