10 results
Causes of Sudden Unexpected Death in Infancy (SUDI) - Differential Diagnosis Algorithm
Congenital Anomaly / Disorder:
 •
Causes of Sudden ... Unexpected Death ... Arrhythmia • Neurologic ... Accidental* Other: • Acute ... #Peds #Pediatrics
Unintentional Weight Loss in Primary Care
 • Definition: More than 5% reduction in body weight within
mortality • Baseline evaluation ... UA Most Common Causes ... (4% to 8%) - Neurologic ... #PrimaryCare #diagnosis ... #differential #unexpected
Approach to Acid Base Disorders - Evaluation and Differential Diagnosis
1) Start with the Anion Gap (AG).
2)
- Evaluation and ... alkalotic than expected ... 3) Now, look at ... the chronicity (acute ... , chronic, or acute
Primary Adrenal Insufficiency
Addison's Disease - Damage of the adrenal glands with lack of cortisol, androgens and
Infiltrative Disorders ... • Consider if unexpected ... insufficiency - Celiac ... • Weakness • Low-grade ... Serum DHEAS Diagnosis
Causes of Secondary Hypertension - Workup and Differential Diagnosis
Approach (when evaluation should be done):
1. Severe or
and Differential Diagnosis ... Approach (when evaluation ... heart failure, neurologic ... Renal parenchymal disease ... Neurologic disorders
Causes of Hypomagnesemia
 • Redistribution: IV glucose, Correction of diabetic ketoacidosis, IV hyperalimentation, Refeeding after starvation,
after starvation, Acute ... Tubulointerstitial renal disease ... ) • Endocrine disorders ... #differential #diagnosis ... #low
Causes of a low fecal elastase
Abnormal pancreatic imaging:
Chronic pancreatitis, Pancreatic tumours including cystic disease, Pancreatic resection,
Causes of a low ... Pancreatic atrophy, Acute ... Rheumatological disorders ... fecal #elastase #low ... #differential #diagnosis
Vitamin B12 (Cobalamin) Deficiency
Etiology:
 • Vit B12 - aka cobalamin. Present in foods derived from animal
• Common Causes ... dysfunction, and/or disorders ... related to IBD, celiac ... disease, other ... total body stores Evaluation
Dysphagia - Differential Diagnosis Framework

Symptom | Diagnosis
• Solid-food dysphagia present for months to years | Mechanical
• Muscular or neurologic ... stroke, Parkinson disease ... region • Bolus slow ... weight loss or acute ... the underlying cause
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Proves cause-effect ... observed No deaths / expected ... = incidence in acute ... ; knowledge of disorder ... #calculations #diagnosis