14 results
Atrioventricular Blocks (AV blocks) - ECG Diagnosis Summary
First Degree AV Block
 • The P wave is
First Degree AV Block ... bundle branch block ... Type I aka Mobitz ... #AVBlock #cardiology ... electrocardiogram #classification
Ultrasound (POCUS) For Nerve Blocks
Nerve block sites, agents, dosing and duration
Infographic by Dr. David Cisewski @dhcisewski
#Management
POCUS) For Nerve Blocks ... Nerve block sites ... , agents, dosing ... #Pain #Nerve #Block ... #Doses #Table
Bradycardias Comparison Table
 - SINUS BRADYCARDIA 
 - JUNCTIONAL BRADYCARDIA 
 - 1st DEGREE AV BLOCK
Bradycardias Comparison Table ... 1st DEGREE AV BLOCK ... 2nd DEGREE AV BLOCK ... Type 1 and 2 - ... COMPLETE HEART BLOCK
Summary of Heart Blocks
1st Degree Heart Block:
 • Prolonged PR >200ms (5 small squares).
 • Narrow
1st Degree Heart Block ... Mobitz I Heart Block ... Complete Heart Block ... • Block in AV ... narrow QRS • Block
Second degree AV Block 2:1
 • During sinus rhythm, 2 to 1 AV block manifest as
Second degree AV Block ... rhythm, 2 to 1 AV block ... second degree AV block ... • A 2:1 AV block ... nature of a AV block
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Transient K+ efflux moving ... : • MOA: Block ... : • MOA: Block ... primarily) and block ... : • MOA: Block
Tachycardia - Differential Diagnosis Table - Wide vs Narrow, Regular vs Irregular

Regular Rhythm - Narrow Complex
Differential Diagnosis Table ... eval of rate and variability ... AFIutter + variable block ... Beware AV nodal blockers ... Differential #Diagnosis #Table
Shock - Differential Diagnosis by Classification
Reflex Syncope 
 - Vasovagal syncope
   • Prolonged standing
Differential Diagnosis by Classification ... pauses • AV block ... Differential #Diagnosis #Classification ... #Table #Causes
Boxer's Fracture - ED Management
Be sure to assess for wounds in patients with fractures of the
• Most common type ... reduce if needed (using ... hematoma block ... or ulnar nerve block
Pacemaker Indications
Class I
 • Symptomatic sinus node dysfunction
 • 3° AV or type 2 2° AV
dysfunction • 3° AV or type ... 2 2° AV block ( ... pronounced 1° or Type ... 1 2° AV block ... uncovered or provoked during