22 results
Algorithm for the diagnosis of chronic diarrhea.
It is usually impractical to test and treat the many
the diagnosis of chronic ... impractical to test ... pick specific tests ... the much smaller differential ... #Testing
Chronic Diarrhea - Workup
Osmotic:
 • Consider food diary and trial avoiding certain foods or meds, Consider
Chronic Diarrhea ... - Workup Osmotic ... hydrogen breath test ... #Diarrhea #Workup ... #diagnosis #differential
Diarrhea Workup and Management Algorithm in Transplant Patients
First Tier Microbiologic-Testing:
1. C. difficile PCR (Stool)
2. CMV qPCR
Diarrhea Workup ... Ova and Parasite ... Breath test for ... #Workup #Management ... Transplant #diagnosis #differential
Gastrointestinal Evaluation of Iron Deficiency Anemia
In patients with anemia, diagnose iron deficiency if:
 • Ferritin <
• Additional laboratory ... inflammation or chronic ... kidney tests Test ... Non-invasive testing ... Gastrointestinal #Evaluation #workup
Workup for Hypophosphatemia - Differential Diagnosis Framework
Rule out spurious hypophosphatemia: paraproteinemia, acute leukemia
Measure Urine Fractional Excretion
Workup for Hypophosphatemia ... - Differential ... Malabsorption, Chronic ... diarrhea, Poor ... Fanconi syndrome, CA
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
Rheumatology Workup ... more time for the laboratory ... for Chronic Polyarthritis ... Rheumatoid #Arthritis #laboratory ... #workup #diagnosis
Hypophosphatemia - Differential Diagnosis Algorithm
Appropriately Low Kidney Phosphate Excretion:
 • Decreased GI Absorption: Chronic Diarrhea, Antacids,
Hypophosphatemia - Differential ... GI Absorption: Chronic ... Diarrhea, Antacids ... Diagnosis #Algorithm #nephrology ... #phosphorus #workup
Primary Adrenal Insufficiency:
 • ACTH stimulation test - Synthetic ACTH does not stimulate cortisol secretion because
secretion; in chronic ... as a result of chronic ... Insufficiency #Evaluation #laboratory ... #diagnosis #testing ... endocrinology #workup
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
GI losses - Chronic ... diarrhea / IBD ... Familial renal Mg wasting ... Hypomagnesemia #Differential ... Classification #Causes #Workup
Causes of Hyponatremia - Differential Diagnosis Algorithm
Hypovolemia, UNa > 20: 
 • Renal losses, Diuretic excess,
Hyponatremia - Differential ... Cerebral salt wasting ... losses, Vomiting, Diarrhea ... : • Acute or chronic ... Algorithm #Causes #nephrology