12 results
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
(3) SVTs - atrial ... (3) Multifocal atrial ... 200ms from longer pause ... 2º - Mobitz I ... II / Mobitz - ,
Causes of Tachycardia - Differential Diagnosis Algorithm
Narrow Complex - Regular:
 • Sinus tachycardia
 • Atrial flutter
Causes of Tachycardia ... Differential Diagnosis Algorithm ... flutter • AV ... tachycardia • AV ... #Causes #cardiology
Visual Guide to AV Nodal Reentrant Tachycardia (AVNRT) - Pathophysiology
 - Dual AV nodal physiology is
Tachycardia (AVNRT) - Pathophysiology ... - Premature atrial ... depolarizes the atria ... - In most case ... Tachycardia #AVNRT #Pathophysiology
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
Differential Diagnosis Algorithm ... • SA Block • AV ... with Variable AV ... Differential #Diagnosis #Algorithm ... #causes
Summary of Heart Blocks
1st Degree Heart Block:
 • Prolonged PR >200ms (5 small squares).
 • Narrow
. 2nd Degree, Mobitz ... P and QRS • Atrial ... • Block in AV ... (block beyond AV ... HeartBlocks #Types #Classification
Treatment of Stable Narrow-Complex Tachycardia
Regular Rhythm:
 • Attempt vagal maneuvers
 • Give adenosine 6 milligrams IV
Control rate with AV ... flutter, ectopic atrial ... Treat underlying cause ... Treat underlying cause ... management #cardiology #algorithm
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Atrial depolarization ... contraction of atrial ... Vaughan Williams Classification ... #Pharmacology #Classification ... #Classes #pathophysiology
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Vaughan Williams Classification ... causing ↓SA node and AV ... interval to prolong AV ... #Pharmacology #Classification ... #Classes #pathophysiology
Lactic Acidosis - Overview and Pathophysiology
Lactic acid is an endogenous substrate for gluconeogenesis, that is constantly
- Overview and Pathophysiology ... why LR does not cause ... defined as an arterial ... differential #diagnosis #pathophysiology ... #classification
Chronic Hypertensive Retinopathy: Pathogenesis and clinical findings

Ophthalmic Artery Hypertension
Stage 1: Mild/vasoconstrictive
 • Acute and chronic vasospasm
Diffuse and focal arterial ... hyalinization causes ... underlying venule -> AV ... BRB breakdown causes ... #Retinopathy #pathophysiology