18 results
Cannon A Waves
 • Caused by atrial contracting against a closed tricuspid valve
 • Atrioventricular dissociation
Caused by atrial ... Atrioventricular dissociation ... activation from SVT (e.g ... #AWaves #diagnosis ... #cardiology #CVP
Isocoria - Pupillary Defects - Differential Diagnosis Algorithm
Relative Afferent Pupil Defect
 • Optic Neuritis
 • Ischemic
Pupillary Defects - Differential ... Diagnosis Algorithm ... Syphilis (light-near dissociation ... Pharmacologic (e.g ... #Causes #Ophthalmology
Shock - Differential Diagnosis by Classification
Reflex Syncope 
 - Vasovagal syncope
   • Prolonged standing
Shock - Differential ... Mechanical • Aortic ... Medication side effect (e.g ... Medication side effect (e.g ... #Table #Causes
Cannon A waves during AVNRT on Physical Exam
In AVNRT, the atria and ventricles contract nearly simultaneously
EKG of the same ... are enough to diagnose ... the case as Typical ... excludes other differentials ... PhysicalExam #JVP #Cardiology
Back Pain - Differential Diagnosis
Primary Back Pathology:
 • Musculoligamentous injury (a.k.a. lumbosacral strain)
 • Spondylosis (i.e.
herniation • Anatomic ... spondyloarthritis (e.g ... spondyloarthritis (e.g ... #Diagnosis #causes ... #primarycare #table
Pulmonary Embolism on ECG 

Mid 30's female with chest pain/dyspnea.  Triage EKG (no prior).
Pulmonary Embolism on ECG ... Triage EKG (no prior ... Differential/diagnosis ... See thread for POCUS ... Pulmonary #Embolism #ECG
Imaging Modalities for Renal Calculus

AXR. KUB
 - Good far calcium-containing stones useful when limited radiation dose
is desirable, e.g ... obstruction - Able ... Limited value: cannot ... with function and anatomy ... stones #calculus #Radiology
Hemorrhagic Pericardial Effusions (Hemopericardium)- Differential Diagnosis Framework

IATROGENIC DISEASE
Secondary to invasive cardiac procedures

NONIATROGENIC
• Malignancy (e.g., metastatic spread:
Diagnosis Framework ... • Malignancy (e.g ... infarction • Aortic ... OTHER RARE CAUSES ... #Diagnosis #cardiology
Causes of Secondary Hypertension - Workup and Differential Diagnosis
Approach (when evaluation should be done):
1. Severe or
Diagnosis Approach ... risk factors (eg ... hypertension (eg ... hypertension (eg ... Coarctation of aorta
Palpitations - Differential Diagnosis Framework

What?
• It is an unpleasant awareness or sensation that the heart is
Palpitations - Differential ... exam • 12-lead ECG ... Valvular disease (e.g ... ., aortic insufficiency ... #Differential #