10 results
Hypercalcemia Evaluation
1) Clinical clues
 - Is the patient symptomatic?
 - Family history?
 - Have you done
Hypercalcemia Evaluation ... FeCa <1 %) - Low ... #differential # ... diagnosis #endocrinology ... #workup
Chronic Diarrhea - Workup
Osmotic:
 • Consider food diary and trial avoiding certain foods or meds, Consider
Chronic Diarrhea ... - Workup Osmotic ... #Workup #diagnosis ... #differential # ... testing #evaluation
Hypokalemia Evaluation Algorithm

Before evaluating hypokalemia, life threatening complications such as arrhythmias and paralysis should be looked
Laxative use • Diarrhea ... syndrome, Congenital adrenal ... consumption • Low ... diagnosis #Algorithm #differential ... potassium #nephrology #low
Workup for Hypophosphatemia - Differential Diagnosis Framework
Rule out spurious hypophosphatemia: paraproteinemia, acute leukemia
Measure Urine Fractional Excretion
Workup for Hypophosphatemia ... - Differential ... Malabsorption, Chronic diarrhea ... FEPO4 ≥ 5% - Renal ... • Normal or Low
Normal Anion-Gap Acidosis (NAGMA) - Differential Diagnosis Framework and Workup

NAGMA
- Chem, ABG or VBG
- Calculate Anion
Acidosis (NAGMA) - Differential ... Framework and Workup ... Loss of HCO3 - Diarrhea ... Metabolic #NAGMA #Differential ... #Diagnosis #Workup
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
losses - Chronic diarrhea ... / IBD Renal Loses ... Hypomagnesemia #Differential ... #Diagnosis #Low ... Classification #Causes #Workup
Primary Adrenal Insufficiency:
 • ACTH stimulation test - Synthetic ACTH does not stimulate cortisol secretion because
between 8 and 9 AM - Low ... aldosterone - Low ... Insufficiency #Evaluation ... diagnosis #testing #endocrinology ... #workup
Approach to Acid Base Disorders - Evaluation and Differential Diagnosis
1) Start with the Anion Gap (AG).
2)
Base Disorders - Evaluation ... and Differential ... 3) Now, look at ... Base #Disorders #Evaluation ... #workup #Differential
TTP - Laboratory Evaluation for Thrombotic Thrombocytopenic Purpura

Activity of von Willebrand factor-cleaving protease activity - A
TTP - Laboratory Evaluation ... If the value is low ... WBC count and differential ... the presence of renal ... ThromboticThrombocytopenicPurpura #Diagnosis #Workup
Causes of Secondary Hypertension - Workup and Differential Diagnosis
Approach (when evaluation should be done):
1. Severe or
Hypertension - Workup ... and Differential ... Approach (when evaluation ... Vasculitis • Endocrinologic ... #Hypertension #Workup