1978 results
Canon A waves on Physical Examination

Associated with complete heart block. Notice the relatively slow HR. Echocardiography
Canon A waves on ... drahmedmohsen85 #Canon
Causes of Tachycardia - Differential Diagnosis Algorithm
Narrow Complex - Regular:
 • Sinus tachycardia
 • Atrial flutter
Differential Diagnosis Algorithm ... Atrial flutter • AV ... tachycardia • AV ... Differential #Diagnosis #Algorithm
Restrictive Cardiomyopathy - Diagnosis and Causes
Clinical: Dyspnea, Exercise Intolerance, ↑ "Right Sided-Symptoms" (ascites, hepatomegaly, ↑↑peripheral edema)
Physical
Nieman-Pick Disease, Danon ... differential #cardiology #algorithm
Canon A waves in a patient with AV dissociation

Occurs due to the simultaneous contraction of atria
Canon A waves in ... a patient with AV ... Awaves #waves #AV ... neck #cardiology #Canon
Bradycardias Comparison Table
 - SINUS BRADYCARDIA 
 - JUNCTIONAL BRADYCARDIA 
 - 1st DEGREE AV BLOCK
- 1st DEGREE AV ... - 2nd DEGREE AV
Atrioventricular (AV) Blocks

First Degree AV Block - "If your R is far from your P than
Atrioventricular (AV ... First Degree AV ... conduction at the AV ... Second Degree AV ... Less than 1:1 AV
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
Differential Diagnosis Algorithm ... • SA Block • AV ... with Variable AV ... Differential #Diagnosis #Algorithm
Bradycardia - Differential Diagnosis Framework and Management
Narrow Complex Bradycardia:
 • Regular: Sinus Bradycardia, AFib w/ AV
Bradycardia, AFib w/ AV ... Atrial Tachy w/ AV ... AFib w/ Variable AV ... Block, Mobitz I AV ... QRS, Mobitz II AV
Supraventricular Tachycardias - Pathophysiology
Conduction pathways through SA Node, Atrium, AV Node, Bundle of His, and Ventricle
Node, Atrium, AV ... Fibrillation • AV ... Tachycardia • AV
Stimulated
SA node
AV node -
Un-stimulated
#PQ
(mV) 0
ECG (lead II)
QRS
#QRS
#SA node
#AV node
#Bundle of His
Bundle branches
#Purkinje fibers
#QRS
#ST
Stimulated SA node AV ... QRS #SA node #AV