51 results
Hyponatremia - Differential Diagnosis by Mechanism
Decr Blood Pressure (“Decr Effective Circulating Volume”) 
 - Volume depletion
carcinoma of the lung ... pathology (e.g. ... SSRIs) Severe pain ... #Diagnosis #Table ... #Causes #Sodium
STEMI Equivalents on ECG
 • Conventional STEMI - Elevation of ST segment at (or 40-60 ms
Equivalents on ECG ... J point • De Winter ... #Equivalents #ECG ... #EKG #diagnosis ... #differential #
Approach to ECGs - Ischemia
MI = Biomarkers + ECG or echo/angiogram findings
Pathologic Q - 1/3 height
= Biomarkers + ECG ... bigger than QRS - deWinter ... -4 can have no pain ... #Ischemia #ECG ... #EKG #diagnosis
Pulmonary Embolism on ECG 

Mid 30's female with chest pain/dyspnea.  Triage EKG (no prior).
on ECG Mid ... female with chest pain ... Triage EKG (no prior ... Differential/diagnosis ... #EKG #Electrocardiogram
Pulmonary Pathology and Associated Lung Ultrasound Findings
Pneumothorax:
 - No lung sliding/barcode sign
 - Lung point (hard
Ultrasound Findings ... pleura in severe cases ... #differential # ... diagnosis #signs ... #Lung #POCUS #ultrasound
Pulmonary Embolism on POCUS Echocardiogram

Mid 30's female with chest pain/dyspnea.  Triage EKG (no prior).
female with chest pain ... Triage EKG (no prior ... Differential/diagnosis ... RV, McConnell's sign ... cardiology #McConnells #sign
Hypoxemic Respiratory Failure - Differential Diagnosis Framework
DECREASED INSPIRED OXYGEN
 • Low PATM Can decrease first part
Diagnosis Framework ... High altitude (eg ... shunting (eg, pulmonary ... intracardiac shunting (eg ... #Diagnosis #pulmonary
Back Pain - Differential Diagnosis
Primary Back Pathology:
 • Musculoligamentous injury (a.k.a. lumbosacral strain)
 • Spondylosis (i.e.
Back Pain - Differential ... spondyloarthritis (e.g ... spondyloarthritis (e.g ... Diagnosis #causes ... #primarycare #table
Venn Diagram - Does this patient have pneumonia?
Diagnosis is generally based on three lines of evidence:
chest infiltrate (e.g ... ., CXR, CT, ultrasound ... Inflammation (e.g ... symptoms (e.g., ... pleuritic chest pain
Chest Pain - Diagnosis and Workup Algorithm

History and Exam
Acute life-threatening causes:
 • Acute myocardial infarction
 •
Chest Pain - Diagnosis ... life-threatening causes ... Pneumothorax • Pulmonary ... Initial workup: • EKG ... • Bedside ultrasound