41 results
Normal QT Interval Measurement
General rule: QT interval should be < 1/2 RR interval
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interval - Only works ... Bazett's Formula: QTc ... #QTc #Interval ... Measurement #cardiology #diagnosis ... #ecg #ekg #electrocardiogram
Causes of Excessive Daytime Sleepiness - Differential Diagnosis Algorithm
Insufficient Sleep
 • Poor Sleep Hygiene
 • Insomnia
Sleep Deprivation (Eg ... Shift Work) Sleep ... (Eg. ... • Medications (Eg ... • Drug Abuse (Eg
Etiologies of Hypernatremia - Differential Diagnosis
GI losses / Insensible losses
Sodium Overload
Transcellular Movement of Water
Central Diabetes Insipidus
Diagnosis GI losses ... (e.g. sarcoidosis ... - Medications (e.g ... renal diseases (e.g ... #Diagnosis #Table
Pulmonary Embolism on ECG 

Mid 30's female with chest pain/dyspnea.  Triage EKG (no prior).
on ECG Mid ... Triage EKG (no prior ... Differential/diagnosis ... #Embolism #ECG ... #EKG #Electrocardiogram
Diastolic Function Grading - Schematic diastolic filling patterns

I: impaired relaxation, II: moderate diastolic dysfunction (pseudonormal), III:
LV compliance), ECG ... : electrocardiogram ... atrium, PASP: pulmonary ... #Diagnosis #Cardiology ... Grades #Criteria #Table
Approach to ECGs - Syncope Syndromes
Electrolytes
 • ↑K - brady, peak T, wide QRS, no P,
Syncope #Syndromes #ECG ... #EKG #Checklist ... #diagnosis #cardiology ... #electrocardiogram ... #differential
Lead AVR on ECG
1. Acute myocardial infarction: ST elevation > 1.5 mm in aVR, indicative of
Lead AVR on ECG ... aVR • Classic EKG ... widened QRS and QTc ... #AVR #leadAVR #ecg ... #diagnosis #ekg
Non-Resolving Pneumonias: Etiologies
Unusual Infections:
 - Immunocompromised patients (e.g.: Mycobacterium, Aspergillosis, Nocardia)
 - Endemic Fungi (e.g.: Histoplasmosis,
Endemic Fungi (e.g ... - Zoonotic (e.g ... Returning travelers (e.g ... Immunologic disorders ... #pulmonary #differential
Hyponatremia - Differential Diagnosis by Mechanism
Decr Blood Pressure (“Decr Effective Circulating Volume”) 
 - Volume depletion
- Malignancy (e.g ... CNS pathology (e.g ... hemorrhage) - Pulmonary ... pathology (e.g. ... #Diagnosis #Table
Hypoxemia / Hypoxia - Rapid Response Management Algorithm

Stridor - Upper airway pathology:
 • Anaphylaxis
 • Foreign
CNS depression (e.g ... Neuromuscular disorders ... (e.g., GBS, MG, ... wall compliance (e.g ... #Diagnosis #Management