53 results
Causes of Tachycardia - Differential Diagnosis Algorithm
Narrow Complex - Regular:
 • Sinus tachycardia
 • Atrial flutter
Causes of Tachycardia ... : • Irregular ... Wide-Complex - Polymorphic ... : • Polymorphic ... Diagnosis #Algorithm #Causes
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
Narrow Complex - Irregular ... Wide Complex - Irregular ... interval) • Polymorphic ... long QT) • Irregular ... Diagnosis #Algorithm #causes
Treatment of Stable Wide-Complex Tachycardia
Regular
 • If ventricular tachycardia or uncertain rhythm:
    -
Wide-Complex Tachycardia Regular ... give adenosine Irregular ... nodal agents (e.g ... consultation • If polymorphic ... narrow-complex irregular
Hyperkalemia shortens repolarization; changes in the T wave provide the earliest clues to hyperpotassemia.
 - At
repolarization causes ... in conduction causes ... QRS widens, and irregular ... #Hyperkalemia #EKG ... #ECG #Changes #
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
Approach to ECGs ... DANGER Narrow - Regular ... node Narrow - Irregular ... 200ms from longer pause ... bradyarrhythmia #ECG
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
Causes of Thrombocytopenia ... Diagnosis and Workup ... function test, ANA (e.g ... patients if the cause ... #Workup #hematology
Treatment of Stable Narrow-Complex Tachycardia
Regular Rhythm:
 • Attempt vagal maneuvers
 • Give adenosine 6 milligrams IV
Control rate (e.g ... Treat underlying cause ... Irregular Rhythm ... Control rate (e.g ... Treat underlying cause
Simplified Approach to Acute Kidney Injury (AKI)
1) IS THIS AN EMERGENCY? 
Is there a dialysis indication
dialysis indication (e.g ... Nephrotoxic drugs (e.g ... are caused by prerenal ... CONSIDER INTRINSIC CAUSES ... KidneyInjury #simplified #workup
Chest Pain - Diagnosis and Workup Algorithm

History and Exam
Acute life-threatening causes:
 • Acute myocardial infarction
 •
Diagnosis and Workup ... life-threatening causes ... rupture Initial workup ... : • EKG • Bedside ... Diagnosis #Algorithm #workup
Recurrent Polymorphic VT/Torsades de Pointes - Management Algorithm
Drugs that prolong QT interval:
 • Class 1a (quinidine,
Recurrent Polymorphic ... • Adult: 0.5-5 mcg ... Pediatric: 0.1-1 mcg ... 1b (lidocaine)- case ... Marshall, MD #Polymorphic