6 results
Cannon A waves during AVNRT on Physical Exam
In AVNRT, the atria and ventricles contract nearly simultaneously
are enough to diagnose ... excludes other differentials ... That’s called Frog ... sign! ... #Sign
Lead AVR on ECG
1. Acute myocardial infarction: ST elevation > 1.5 mm in aVR, indicative of
atrial injury from ... ST elevation: Differential ... diagnosis includes ... tachycardia (VT) from ... #ekg #differential
STEMI Equivalents on ECG
 • Conventional STEMI - Elevation of ST segment at (or 40-60 ms
J point • De Winter ... V2 • Wellens sign ... indistinguishable from ... Equivalents #ECG #EKG #diagnosis ... #differential #
Approach to ECGs - Ischemia
MI = Biomarkers + ECG or echo/angiogram findings
Pathologic Q - 1/3 height
Equivalents / Don't Miss Signs ... bigger than QRS - deWinter ... T waves - starts ... Ischemia #ECG #EKG #diagnosis ... Interpretation #differential
CNS Infections - Viral Encephalitis and Bacterial Meningitis - Differential Diagnosis Framework

Viral Encephalitis:
MCC: Enteroviruses (e.g., coxsackievirus
Bacterial Meningitis - Differential ... Diagnosis Framework ... parenchymatous (tabes ... Acute meningeal signs ... bacterial from
Fever in Returning Travelers from Tropical Regions - Frequent Differential Diagnoses
Medical History:
 • Skin exposure to
Returning Travelers from ... Regions - Frequent Differential ... Diagnoses Medical ... without localizing signs ... #travel