35 results
Sensitivity Specificity False-Positive False-Negative Contingency Table / confusion matrix

Sensitivity refers to the test's ability to correctly
False-Negative Contingency ... #Specificity #FalsePositive ... FalseNegative #Contingency
Chronic Diarrhea - Workup
Osmotic:
 • Consider food diary and trial avoiding certain foods or meds, Consider
diagnostic fast, Stool ... diagnostic fast, Stool ... A/P, Consider testing ... Assessment of stool ... Sudan stain of stool
What is Fecal Occult Blood Testing (FOBT)
 • Screening for colorectal cancer in average risk population
Fecal Occult Blood Testing ... Three separate stool ... to unnecessary testing ... #OccultBlood #Testing ... #FOBT #Guaiac #FalsePositives
Algorithm for the Evaluation of Acute Diarrhea (< 7 days)
Are the following present?
   1.
diarrhea, > 6 stools ... 70 yrs) Send stool ... Routine stool culture ... Ova and parasite testing ... Dehydration or > 8 stools
Fecal Incontinence - Pathogenesis and Complications
Continence mechanisms are impaired
 • Local neuronal damage
 • External and
Complications Continence ... sphincter impairment Continence ... dementia) #Fecal #stool
Diarrhea Workup and Management Algorithm in Transplant Patients
First Tier Microbiologic-Testing:
1. C. difficile PCR (Stool)
2. CMV qPCR
Microbiologic-Testing ... difficile PCR (Stool ... Norovirus PCR (Stool ... Microbiologic-Testing ... overgrowth If above testing
Urine Drug Screens - Common drugs that may cause false positive tests 

Amphetamines:
Bupropion, Labetalol, Methylphenidate, Phenylephrine,
Toxicology #Diagnosis #FalsePositive ... #Testing
Causes of Inaccurate Fecal Occult Blood Test Results 

False Positive gFOBT:
Ingestion of nonhuman heme (eg, meat
#OccultBlood #Testing ... #Laboratory #FalsePositive ... Accuracy #Inaccurate #Stool
Irritable Bowel Syndrome (IBS) - Diagnosis and Workup Summary
Use a positive diagnostic strategy with minimal testing.
strategy with minimal testing ... in frequency of stool ... Change in form of stool ... For: • Routine stool ... allergy/ sensitivity testing
Helicobacter Pylori (H. pylori) Infection - Diagnosis and Management - GrepMed Handbook
Presentation: Dyspepsia / Peptic Ulcer
definitive) • Stool ... Ag, Urea Breath Testing ... hold 2w before testing ... ABx resistance): Stool