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diagnosis ecg electrocardiogram differential algorithm comparison management stable svt syncope treatment atrial avnrt bradyarrhythmia bradycardia causes checklist digitalis digoxin effect
Visual Guide to AV Nodal Reentrant Tachycardia (AVNRT) - Pathophysiology - Dual AV nodal physiology is
Nodal Reentrant ... Tachycardia (AVNRT ... ECG usually shows ... at rates of 120 ... Pathophysiology #cardiology
Digoxin effect on Electrocardiogram (EKG) Digoxin is a cardiac glycoside from the foxglove leaf Mechanism - Inhibits Na-K
- Decreases AV ... nodal conduction ... (at therapeutic ... or biphasic T waves ... #Cardiology #Digitalis
Tachycardia - Differential Diagnosis Table - Wide vs Narrow, Regular vs Irregular Regular Rhythm - Narrow Complex
AFIutter) • P-waves ... variable block >> MAT ... abnormality • Beware AV ... nodal blockers ... Irregular #causes #cardiology
Treatment of Stable Narrow-Complex Tachycardia Regular Rhythm: • Attempt vagal maneuvers • Give adenosine 6 milligrams IV
Control rate with AV ... nodal blocking ... Control rate (e.g ... atrial flutter or MAT ... Treatment #management #cardiology
Approach to ECGs - Tachy/Bradyarrhythmias Tachyarrhythmias - HR > 100 Wide (1) VT - DANGER (2)
(1) Sinus tachycardia ... (MAT) - 3 ... different P waves ... #EKG #diagnosis ... electrocardiogram #cardiology
Treatment of Stable Wide-Complex Tachycardia Regular • If ventricular tachycardia or uncertain rhythm: -
If ventricular tachycardia ... if necessary to max ... WPW) - Avoid AV ... nodal agents (e.g ... Treatment #management #cardiology
Approach to ECGs - Syncope Syndromes Electrolytes • ↑K - brady, peak T, wide QRS, no P,
short QT, Osborn J ... assoc with 1K, AV ... HOCM- dagger Q lat ... #EKG #Checklist ... #diagnosis #cardiology
Causes of ST Segment Elevation - Differential Diagnosis Framework STEMI: • Upsloping convex STE: "Pardee's sign" +
QT interval J ... the J point in ... block; and sinus tachycardia ... differential #diagnosis #cardiology ... #ecg #ekg #electrocardiogram
WOBBLER for ECG assessment in Syncope W - Wolff Parkinson White O - Obstructed AV
O - Obstructed AV ... is obstructed AV ... a bit like the J ... Mnemonic #Syncope #EKG ... #Cardiology
Approach to ECGs - VT vs. SVT - Wide Tachycardias DDx = VT vs. SVT with BBB All
SVT - Wide Tachycardias ... (> 160ms) - AV ... QRS complexes at ... nadir of the S-wave ... #ekg #cardiology
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