35 results
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 ... Un-stimulated #PQ ... (mV) 0 ECG (lead ... QRS #SA node #AV ... node #Bundle of
Hallmark ECG features of Ventricular Tachycardia (VT)
AV indicates atrioventricular; LAD, left axis deviation; LBBB, left bundle
Hallmark ECG features ... Tachycardia (VT) AV ... deviation; LBBB, left bundle ... deviation; RBBB, right bundle ... Tachycardia #VTach #ECG
Second Degree Heart Block, Mobitz Type II

• p waves are normal 
• QRS complexes are usually
to concomitant bundle ... block is below the AV ... Diagnosis #Cardiology #EKG ... #ECG #Electrocardiogram
Algorithm for the Evaluation of Regular, Wide-Complex Tachycardia
1. aVR: Is the initial deflection in aVR positive?
Algorithm for the ... AV Dissociation: ... there evidence of AV ... Bundle-branch morphology ... Interpretation #ECG
The 3 Fates of a Premature Atrial Complex
 • PAC can be conducted with normal QRS
conducts through the AV ... finds the right bundle ... period of the AV ... cardiology #diagnosis #ekg ... #ecg #electrocardiogram
Atrioventricular (AV) Blocks

First Degree AV Block - "If your R is far from your P than
First Degree AV ... node (His bundle ... node, His Bundle ... heartblock #cardiology #ecg ... #ekg #diagnosis
Atrioventricular Blocks (AV blocks) - ECG Diagnosis Summary
First Degree AV Block
 • The P wave is
blocks) - ECG Diagnosis ... is an existing bundle ... group-beating" on the ECG ... AVBlock #cardiology #ekg ... #ecg #diagnosis
Chest Pain - Diagnosis and Workup Algorithm

History and Exam
Acute life-threatening causes:
 • Acute myocardial infarction
 •
Diagnosis and Workup ... Algorithm History ... : • EKG • Bedside ... Pain #Diagnosis #Algorithm ... #workup
Gynecomastia - Differential Diagnosis a
nd Workup Algorithm
Gynecomastia is common in clinical practice, affecting ~50% of males
Diagnosis a nd Workup ... Algorithm Gynecomastia ... Testosterone, HCG ... Differential #Diagnosis #Workup ... #Algorithm #endocrinology
Differential Diagnosis of Hypoglycemia
Evaluation of Hypoglycemia
Patients with known diabetes who are not systemically ill and can
, no extensive workup ... EtOH - Infectious workup ... blood cultures - ECG ... #Differential #Algorithm