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diagnosis differential cardiology ecg ekg electrocardiogram antiarrhythmics bradycardia management neurology pharmacology anemia arrhythmias ddxof em hematology im neuro pathophysiology pediatrics
Pacemaker Placement Indications Class I: • Third degree block • Advanced 2nd degree block • Symptomatic Mobitz
I or II • Mobitz ... Class II: • Mobitz ... Class Ill: • Syncope ... arrest, prolonged PR ... • Reversible causes
Differential Diagnosis of Syncope First, is it syncope? History is very important for distinguishing syncope from other
First, is it syncope ... from other causes ... Common causes of ... #Causes #Differential ... #Algorithm #Ddxof
Summary of Heart Blocks 1st Degree Heart Block: • Prolonged PR >200ms (5 small squares). • Narrow
• Prolonged PR ... Treatment 2nd Degree, Mobitz ... • Prolonged PR ... . 2nd Degree, Mobitz ... HeartBlocks #Types #Classification
Shock - Differential Diagnosis by Classification Reflex Syncope - Vasovagal syncope • Prolonged standing
Differential Diagnosis by Classification ... bradycardia • Sinus pauses ... • AV block ... Differential #Diagnosis #Classification ... #Table #Causes
Causes of Syncope #Diagnosis #EM #IM #Neuro #Syncope #Differential #Algorithm #Ddxof
Causes of Syncope ... EM #IM #Neuro #Syncope ... #Differential #Algorithm
Antiarrhythmics - Vaughan Williams Classification Class I (Ia, Ib, Ic) - Na+ Channel Blockade • Slows depolarization
Vaughan Williams Classification ... rate and prolongs PR ... rate and prolongs PR ... VaughanWilliams #Classification ... #Classes #cardiology
Syncope - Differential Diagnosis The percentage of syncopal events secondary to arrhythmias or structural disease is generally
Syncope - Differential ... percentage of syncopal ... Sick sinus, AV block ... Others Non-syncopal ... differential #diagnosis #causes
Approach to ECGs - Tachy/Bradyarrhythmias Tachyarrhythmias - HR > 100 Wide (1) VT - DANGER (2)
1º - long PR intervals ... 200ms from longer pause ... 2º - Mobitz I ... successively longer PR ... II / Mobitz - ,
Antiarrhythmics - Vaughan Williams Classification: CLASS 1 - Sodium Channel Blockers: • MOA: Block fast Na+ channels
Vaughan Williams Classification ... depolarization • ↑ PR ... velocity) - ↑ PR ... #Pharmacology #Classification ... #Classes #pathophysiology
Atrioventricular Blocks (AV blocks) - ECG Diagnosis Summary First Degree AV Block • The P wave is
• PR interval ... Type I aka Mobitz ... type II (aka Mobitz ... atrioventricular #blocks #AVBlock ... electrocardiogram #classification
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