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A Lewis Lead (also called the S5 lead) is a modified ECG lead used to detect
A Lewis Lead (also ... is a modified ECG ... standard 12 lead ECG ... Lead I on the ECG ... #Cardiology #EKG
Approach to ECGs - Ischemia
MI = Biomarkers + ECG or echo/angiogram findings
Pathologic Q - 1/3 height
= Biomarkers + ECG ... Equivalents / Don't Miss Signs ... bigger than QRS - deWinter ... #Ischemia #ECG ... #EKG #diagnosis
Cannon A waves during AVNRT on Physical Exam
In AVNRT, the atria and ventricles contract nearly simultaneously
EKG of the same ... to diagnose the case ... as Typical AVNRT ... excludes other differentials ... ’s called Frog sign
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Primary Adrenal Insufficiency
Addison's Disease - Damage of the adrenal glands with lack of cortisol, androgens and
aldosterone Causes ... : Most Common Causes ... the skin might be ... Administer 250 mcg ... addisons #disease #endocrinology
Syncope is a sudden, transient loss of consciousness, which is thought to be secondary to cerebral
cardiac syncope, e.g ... such as reflex ... syncope (ruling out differential ... orthostatic vital sign ... and an initial ECG
Causes of ST Segment Elevation - Differential Diagnosis Framework

STEMI:
 • Upsloping convex STE: "Pardee's sign" +
Causes of ST Segment ... Elevation - Differential ... STE: "Pardee's sign ... diagnosis #cardiology #ecg ... #ekg #electrocardiogram
Eosinophil Disorders Testing Algorithm
INDICATIONS FOR TESTING:
 • Peripheral blood eosinophilia/hypereosinophilia uncovered incidentally during medical evaluation or
neoplasms) • Screen also ... treatment may be ... organ-specific signs ... or symptoms (eg ... Disorders #Algorithm #Differential
Causes of Secondary Hypertension - Workup and Differential Diagnosis
Approach (when evaluation should be done):
1. Severe or
risk factors (eg ... hypertension (eg ... hypertension (eg ... Coarctation of aorta ... Vasculitis • Endocrinologic
Premature Ventricular Complexes (PVC's) - Summary Framework

Why PVCs?  Can be the first manifestation of cardiac
arrhythmia syndromes (e.g ... heart disease Causes ... Digoxin toxicity Symptoms ... 300 = NSVT EKG ... may not occur Differential
BEE Syndromes - Non-inflammatory Causes

Immune-mediated conditions affecting the Brain, Eye, and Ear

Visual or auditory symptoms in
BEE Syndromes - ... an underlying autoimmune ... is important, as ... skull neoplasms (e.g ... noninflammatory #differential