31 results
Antiarrhythmics - Vaughan Williams Classification
Class I (Ia, Ib, Ic) - Na+ Channel Blockade
 • Slows depolarization
Vaughan Williams Classification ... , Ic) - Na+ Channel ... rate and prolongs PR ... rate and prolongs PR ... VaughanWilliams #Classification
Hyperkalemia shortens repolarization; changes in the T wave provide the earliest clues to hyperpotassemia.
 - At
Hyperkalemia shortens ... repolarization; changes ... prolonged PR and ... wave to produce classic ... #Progression #Table
Antiarrhythmic Medications - Vaughan Williams Classification - Summary Table
Class I agents - Sodium Channel Blockers⠀
Class II
Vaughan Williams Classification ... - Summary Table ... - Sodium Channel ... #Medications #Classification ... #Summary #Table
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Vaughan Williams Classification ... Channel Blockers ... depolarization • ↑ PR ... velocity) - ↑ PR ... #Pharmacology #Classification
Hypokalemia Evaluation Algorithm

Before evaluating hypokalemia, life threatening complications such as arrhythmias and paralysis should be looked
Hypokalemia Evaluation ... Algorithm Before ... evaluating hypokalemia ... The next step in evaluating ... #diagnosis #Algorithm
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Vaughan Williams Classification ... : CLASS 1 - Sodium ... depolarization • ↑ PR ... velocity) - ↑ PR ... #Pharmacology #Classification
Hypokalemia - Differential Diagnosis
Poor Intake 
 - Starvation
 - Anorexia
GI Losses 
 - Vomiting / NG
Hypokalemia - Differential ... DrEricStrong #Hypokalemia ... Low #Potassium #Table ... #Classification ... #Causes
Hyperkalemia - Management Algorithm
 • IV calcium
 • IV insulin and glucose and/or salbutamolt
 • Consider
Hyperkalemia - Management ... Algorithm • IV ... potassium and ECG changes ... waves, Prolonged PR ... , asystole #hyperkalemia
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
abnormalities - Hypercalcemia ... - Hypokalemia ... Low #Magnesium #Table ... #Classification ... #Causes #Workup
Classification, Differential Diagnosis, and Features of Hyponatremia According to Volume Status 

Hypervolemic hypernatremia 
 - CHF
Classification, ... Glucocorticoid deficit - Hypokalemia ... #Hyponatremia #Classification ... Differential #Diagnosis #Table ... #Causes