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cardiology diagnosis ekg causes differential clinical ecgeducator medstudent pathophysiology algorithm antiarrhythmics arrhythmias cardiac classes classification conduction ecg pathways pharmacology acs
Stimulated SA node AV node - Un-stimulated #PQ (mV) 0 ECG (lead II) QRS #QRS #SA node #AV node #Bundle of His Bundle branches #Purkinje fibers #QRS #ST
Stimulated SA node ... ) QRS #QRS #SA
Supraventricular Tachycardias - Pathophysiology Conduction pathways through SA Node, Atrium, AV Node, Bundle of His, and Ventricle
pathways through SA
Approach to ECGs - Tachy/Bradyarrhythmias Tachyarrhythmias - HR > 100 Wide (1) VT - DANGER (2)
tachy not from SA ... /brady) (3) SA ... escaped beats (4) SA
Anatomical Differential Diagnosis for Arrhythmias • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS) • AV
Arrhythmias • SA ... > 100 bpm) • SA
Multifocal (or multiform) atrial tachycardia (MAT) is an abnormal heart rhythm, specifically a type of supraventricular
sinoatrial node (SA ... outside of the SA
Cardiac conducting system - Sinoatrial (SA) node normally generates the action potential, i.e. the electrical
- Sinoatrial (SA ... - The SA node
A junctional escape beat is a delayed heartbeat originating not from the atrium but from an
impulses from the SA ... node because of SA ... compensate for the SA ... function when the SA
Acute Coronary Syndrome - Diagnostic Likelihood Ratios for Symptoms and Physical Examination. Source: Fanaroff AC, Rymer
JA, Goldstein SA
Dorsal vagal nucleus T1 spinal cord segment Sympathetic trunk Vagus n. (CN X) 含 - Cardiac plexus — Sinoatrial (SA) node #Atrioventricular (AV) #node - Myocardium
— Sinoatrial (SA
Syncope - Differential Diagnosis Algorithm Neurocardiogenic: • Vasovagal • Orthostatic Hypotension • Autonomic Neuropathy • Situational (micturition,
Sinus Syndrome (SA
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