26 results
Cannon A Waves
 • Caused by atrial contracting against a closed tricuspid valve
 • Atrioventricular dissociation
Cannon A Waves ... • Caused by atrial ... dissociation + retrograde atrial ... activation from SVT (e.g ... AWaves #diagnosis #cardiology
Typical (Counterclockwise) and Reverse Typical (Clockwise) Atrial Flutter on EKG
Typical (Counterclockwise) Atrial Flutter
 • Inferior leads:
Flutter on EKG ... Isoelectric segment with positive ... Inferior leads: "Positive ... Flutter #aflutter #ecg ... #cardiology #clinical
Counterclockwise and (Left) vs Clockwise (Right) Flutter
Typical atrial flutter is counterclockwise in direction and originates from
Flutter Typical atrial ... This appears as positively-directed ... appearance on ECG ... #Diagnosis #ECG ... #EKG #Cardiology
Isthmus Independent Atrial Flutter
 • Rapid atrial activity without typical inferior sawtooth waves suggests CTI-independent flutter
Isthmus Independent Atrial ... circuit • Positive ... Flutter #aflutter #ecg ... #ekg #electrocardiogram ... #cardiology #clinical
Typical ECG changes in acute pericarditis includes: stage 1 - diffuse, positive, ST elevations with reciprocal
Typical ECG changes ... stage 1 - diffuse, positive ... leads indicates atrial ... patients) stage 4 - ECG ... Diagnosis #EM #IM #Cardiology
Cannon A waves during AVNRT on Physical Exam
In AVNRT, the atria and ventricles contract nearly simultaneously
Cannon A waves during ... In AVNRT, the atria ... EKG of the same ... regular rapid cannon ... PhysicalExam #JVP #Cardiology
Typical (Counterclockwise) Atrial Flutter on EKG
 • Inferior leads: Sawtooth waves (fast up, slow down; "negative")
Counterclockwise) Atrial ... Isoelectric segment with positive ... Counterclockwise #Atrial ... Flutter #aflutter #ecg ... #cardiology #clinical
Reverse Typical (Clockwise) Atrial Flutter on EKG
 • Inferior leads: "Positive" waves often notched (usually not
Typical (Clockwise) Atrial ... Inferior leads: "Positive ... Typical #Clockwise #Atrial ... Flutter #aflutter #ecg ... #cardiology #clinical
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
patient has a positive ... • History of BCG ... immunocompromised (e.g ... negative NAAT result cannot ... Testing #Diagnosis #Workup
Stiff Person Syndrome (SPS) - Diagnosis and Management Summary

Epidemiology:
 • Prevalence: 1-2 cases per million -
emotions - A positive ... unit activity on EMG ... Testing anti-GAD (positive ... of diazepam • EMG ... antibody that works