43 results
Anatomical Differential Diagnosis for Arrhythmias
 • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS)
 • AV
Arrhythmias • SA ... escape rhythm, Conduction ... His-purkinje system: Conduction ... > 100 bpm) • SA ... Differential #Diagnosis #Causes
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
Sinus Syndrome • SA ... with Variable AV Conduction ... rhythm SVT with conduction ... rhythm SVT with conduction ... Diagnosis #Algorithm #causes
Hyperkalemia shortens repolarization; changes in the T wave provide the earliest clues to hyperpotassemia.
 - At
provide the earliest clues ... repolarization causes ... L, decrease in conduction ... causes prolonged ... sine wave (QRS-T fusion
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
reduce speed of ion conduction ... current) causing ↓SA ... to ↑ ERP (slow conduction ... Classification #Classes
Constrictive Pericarditis on POCUS Echocardiogram - Apical 3-Chamber View

Young Lupus patient admitted to hospital new onset
Pericarditis on POCUS ... could pinpoint the cause ... has pericardial effusion ... with similar peri effusion ... Pericarditis #CP #POCUS
Type A Aortid Dissection - Suprasternal View

Type A Aortic Dissection (TAD), present on this suprasternal view
insuff, pericardial effusion ... supports PE or other causes ... #Notch #Aorta #POCUS
Constrictive Pericarditis on POCUS Echocardiogram - Subcostal View

Young Lupus patient admitted to hospital new onset HFpEF.
Pericarditis on POCUS ... could pinpoint the cause ... has pericardial effusion ... similar sized effusion ... Pericarditis #CP #POCUS
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Summary Cardiac Conduction ... reduce speed of ion conduction ... current) causing ↓SA ... to ↑ ERP (slow conduction ... Classification #Classes
Pulmonary Pathology and Associated Lung Ultrasound Findings
Pneumothorax:
 - No lung sliding/barcode sign
 - Lung point (hard
Possible small plural effusion ... pleura in severe cases ... Possible bilateral effusion ... submassive PE) POCUS ... #signs #Lung #POCUS
Approach to Joint Pain - Arthritis Differential Diagnosis Framework

Inflammatory Versus Noninflammatory Pain
 • Is it inflammatory
suggested by warmth, effusion ... the morning • Effusion ... motion → articular condition ... periarticular condition ... weeks) Can Be Caused