22 results
Algorithm for the diagnosis of chronic diarrhea.
It is usually impractical to test and treat the many
of chronic diarrhea ... impractical to test ... pick specific tests ... the much smaller differential ... #Chronic #Diarrhea
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
Gastrointestinal Evaluation of Iron Deficiency Anemia
In patients with anemia, diagnose iron deficiency if:
 • Ferritin <
patients with anemia, diagnose ... • Additional laboratory ... inflammation or chronic ... Non-invasive testing ... Gastrointestinal #Evaluation #workup
Diarrhea Workup and Management Algorithm in Transplant Patients
First Tier Microbiologic-Testing:
1. C. difficile PCR (Stool)
2. CMV qPCR
Diarrhea Workup ... Breath test for ... #Workup #Management ... Algorithm #Transplant #diagnosis ... #differential
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
Rheumatology Workup ... more time for the laboratory ... for Chronic Polyarthritis ... (to support a diagnosis ... #workup #diagnosis
Workup for Hypophosphatemia - Differential Diagnosis Framework
Rule out spurious hypophosphatemia: paraproteinemia, acute leukemia
Measure Urine Fractional Excretion
- Differential ... Diagnosis Framework ... Malabsorption, Chronic ... diarrhea, Poor ... #nephrology
Hypophosphatemia - Differential Diagnosis Algorithm
Appropriately Low Kidney Phosphate Excretion:
 • Decreased GI Absorption: Chronic Diarrhea, Antacids,
Diagnosis Algorithm ... GI Absorption: Chronic ... Diarrhea, Antacids ... #nephrology #phosphorus ... #workup
Causes of Hyponatremia - Differential Diagnosis Algorithm
Hypovolemia, UNa > 20: 
 • Renal losses, Diuretic excess,
Diagnosis Algorithm ... Cerebral salt wasting ... losses, Vomiting, Diarrhea ... : • Acute or chronic ... #Causes #nephrology
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
GI losses - Chronic ... diarrhea / IBD ... Hypomagnesemia #Differential ... #Diagnosis #Low ... Classification #Causes #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