Prof. Ashraf Husain. Arrhythmia is defined as irregular impulse formation in the form of rate,...
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Transcript of Prof. Ashraf Husain. Arrhythmia is defined as irregular impulse formation in the form of rate,...
Prof. Ashraf Husain
Arrhythmia is defined as irregular impulse formation in the form of rate, conduction or change in interrelationship of timing of R-R interval
Change slope Symp.
Change thrashold
Phase 4 change in slope. PS
Change in RMP
Atrial re-entry Atrial tachycardia Atrial fibrilation Atrial flutter
AV Nodal re-entry Supraventricular tachycardias
AV re-entry (Aberent) WPW synd. Supraventricular tachy
Ventricular re-entry Ventricular tachycardias
many go unnoticed and produce no symptoms
palpitations - ranging from ³noticing´ or ³being aware´ of ones heartbeat to a sensation of the heart ³beating out of the chest´
if Q is affected (HR > 300) - lightheadedness and syncope, fainting
drugs & electrolyte imbalances - antiarrhythmic drugs, hypokalemia,imbalances of calcium and magnesium
very rapid arrhythmias u myocardial oxygen demand r ischemiaand angina
sudden death - especially in the case of an acute MI‡ mechanism differentiation from ECG very difficult to impossible