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cardiology diagnosis ekg ecg clinical differential syncope arrhythmia causes mobitz antiarrhythmics atrial bradycardia classes comparison degree heartblock pharmacology atrioventricular blocks
Summary of Heart Blocks 1st Degree Heart Block: • Prolonged PR >200ms (5 small squares). • Narrow
• Prolonged PR ... • Prolonged PR ... PR shorted after ... HeartBlocks #Types #Classification ... Diagnosis #EKG #electrocardiogram
Approach to ECGs - Tachy/Bradyarrhythmias Tachyarrhythmias - HR > 100 Wide (1) VT - DANGER (2)
DANGER (2) Sinus ... Regular (1) Sinus ... 1º - long PR intervals ... successively longer PR ... EKG #diagnosis #electrocardiogram
Second degree AV Block type II (aka Mobitz II) • There is constant PR interval (normal
Second degree AV Block ... There is constant PR ... location of the block ... Second #Degree #AVBlock ... cardiology #ecg #ekg #electrocardiogram
Antiarrhythmics - Vaughan Williams Classification Class I (Ia, Ib, Ic) - Na+ Channel Blockade • Slows depolarization
Vaughan Williams Classification ... cells • Slows sinus ... rate and prolongs PR ... cells • Slow sinus ... rate and prolongs PR
The 4 Variants of Sinus Arrhythmia Phasic Sinus Arrhythmia: • The rate increases with respiration and decreases
4 Variants of Sinus ... Arrhythmia Phasic Sinus ... The P wave and PR ... presence of AV block ... diagnosis #ekg #ecg #electrocardiogram
Sinus pause/arrest vs Sinoatrial Block #cardiology #diagnosis #ekg #ecg #electrocardiogram #sinuspause #sinoatrialblock
Sinus pause/arrest ... vs Sinoatrial Block ... diagnosis #ekg #ecg #electrocardiogram
Hypothermia on EKG • J (Osborn) waves • PR, QRS, and QT prolongation • Various bradyarrythmias
Osborn) waves • PR ... bradyarrythmias (e.g. sinus ... waves #EKG #ECG #electrocardiogram
Atrioventricular Blocks (AV blocks) - ECG Diagnosis Summary First Degree AV Block • The P wave is
• PR interval ... There is constant PR ... • During sinus ... ecg #diagnosis #electrocardiogram ... #classification
Second Degree Heart Block, Mobitz Type I (Wenckebach) P waves and QRS complexes are normal but... •
Second Degree Heart Block ... • PR interval ... beating" • The block ... Cardiology #EKG #ECG #Electrocardiogram
Second Degree Heart Block, Mobitz Type II • p waves are normal • QRS complexes are usually
Second Degree Heart Block ... bundle branch block ... • PR intervals ... beats • The block ... Cardiology #EKG #ECG #Electrocardiogram
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