11 results
Drugs affecting the cardiac action potential. The sharp rise in voltage ("0") corresponds to the influx
to the sodium-channel ... voltage-sensitive calcium channels ... Antiarrhythmics #Classes ... #Effect #ActionPotentials
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Vaughan Williams Classification ... CLASS 1 - Sodium Channel ... Block fast Na+ channels ... #Pharmacology #Classification ... #Classes #pathophysiology
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Depolarization: • Na+ channels ... Phase • Ca++ channels ... Vaughan Williams Classification ... #Pharmacology #Classification ... #Classes #pathophysiology
Antiarrhythmics - Vaughan Williams Classification
Class I (Ia, Ib, Ic) - Na+ Channel Blockade
 • Slows depolarization
Vaughan Williams Classification ... Ib, Ic) - Na+ Channel ... Class III - K+ Channel ... VaughanWilliams #Classification ... #Classes #cardiology
In order to better classify heart failure, the American College of Cardiology Foundation and the American
risk factors as a classification ... of the ACC/AHA Classification ... now the ACC/AHA classification ... as their status changes ... #Stages #Classes
Major neurocognitive disorders (MNCD): Diagnosis and workup 

1) Clinical diagnosis Cognitive impairment + loss of autonomy
2)
Alzheimer - 1st cause ... - Behavioral changes ... - Behavioral changes ... Dementia - 2nd cause ... Differential #Subtypes #Classification
Chest Pain / ACS Evaluation Algorithm
Algorithm that attempts to the use history taking (guided by LRs),
Diamond-Forrester classification ... Ask about: - Changes ... physical activity - Nausea
EKG in Acute Pulmonary Embolism
The sensitivity and specificity for EKG findings in acute PE are low.
EKG
evaluating for other causes ... Non-specific ST-T Changes ... diagnosis #cardiology #electrocardiogram
Causes of ST Segment Elevation - Differential Diagnosis Framework

STEMI:
 • Upsloping convex STE: "Pardee's sign" +
Causes of ST Segment ... voltage Other Causes ... dissection • Sodium-channel ... cardiology #ecg #ekg #electrocardiogram
Causes of Hyperkalemia
l. Pseudohyperkalemia
  A Cellular efflux; thrombocytosis, erythrocytosis, leukocytosis, in vitro hemolysis
  B.
Causes of Hyperkalemia ... epithelial sodium channel ... epithelial sodium channel ... High #Potassium #Classification ... #Causes