11 results
Antiarrhythmics - Vaughan Williams Classification
Class I (Ia, Ib, Ic) - Na+ Channel Blockade
 • Slows depolarization
Vaughan Williams Classification ... rate and prolongs PR ... rate and prolongs PR ... VaughanWilliams #Classification ... #Classes #cardiology
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Vaughan Williams Classification ... depolarization • ↑ PR ... velocity) - ↑ PR ... #Pharmacology #Classification ... #Classes #pathophysiology
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Vaughan Williams Classification ... depolarization • ↑ PR ... velocity) - ↑ PR ... #Pharmacology #Classification ... #Classes #pathophysiology
Hyperkalemia shortens repolarization; changes in the T wave provide the earliest clues to hyperpotassemia.
 - At
repolarization causes ... in conduction causes ... prolonged PR and ... wave to produce classic ... #Progression #Table
Preoperative Risk Evaluation

Major Pre-Op Questions:
1. Does the patient have any modifiable risk factors that could be
Evaluation Major ... ASA class If ... event, follow ACC algorithm ... Change in clinical ... #Risk #Evaluation
Chest Pain / ACS Evaluation Algorithm
Algorithm that attempts to the use history taking (guided by LRs),
Chest Pain / ACS Evaluation ... Diamond-Forrester classification ... Ask about: - Changes ... physical activity - Nausea ... ChestPain #ACS #Evaluation
American Society of Anesthesiologists (ASA) Classification
The ASA classification (Table) aims to predict perioperative mortality rates but
The ASA classification ... (Table) aims to ... predict perioperative ... #Diagnosis #Preoperative ... #ASA #Classes #
Algorithm for the evaluation of macrocytic anemia. (RBC = red blood cell; MMA = methylmalonic acid.)
Physicians
Algorithm for the ... evaluation of macrocytic ... the most likely cause ... recovery also causes ... possible neuropathic changes
TABLE 2. Irritable bowel syndrome (IBS) sub-classifications
lBS-diarrhoea (IBS-D)
 - >25% loose or watery stools; <25% hard
TABLE 2. ... syndrome (IBS) sub-classifications ... of incomplete evacuation ... Subclassifications #Classes
Evaluation and Management of Hypokalemia

Hypokalemia is often asymptomatic. Evaluation begins with a search for warning signs
Evaluation and Management ... Evaluation begins ... palpitations, changes ... Most cases of hypokalemia-induced ... #Algorithm