Shock - Differential Diagnosis by Classification Reflex Syncope - Vasovagal syncope • Prolonged standing • Emotional stress • Blood draw • Severe pain (particularly intraabdominal) - Situational syncope • Coughing • Sneezing • Micturition • Defecation • Post-exercise - Carotid sinus hypersensitivity Cardiogenic Syncope - Bradyarrhythmias • Sinus bradycardia • Sinus pauses • AV block - Tachyarrhythmias • Ventricular tachycardia - Mechanical • Aortic stenosis • Hypertrophic cardiomyopathy • Massive PE Orthostatic Syncope - Volume depletion - Medication side effect (e.g. αblockers, antidepressants, antipsychotics) - Autonomic failure • Parkinson’s disease • Diabetes • Alcoholism • Amyloidosis • Multiple system atrophy Syncope Mimics - Seizure - “Cerebrovascular syncope” • Vertebrobasilar insufficiency • Subclavian steal syndrome - Alcohol blackout - Medication side effect (e.g. sedation) - Psychogenic pseudosyncope Dr. Eric Strong https://twitter.com/DrEricStrong #Syncope #Differential #Diagnosis #Classification #Table #Causes
