354 results
Algorithm for Interpreting Urine Studies in a Patient with a Foley Catheter

- Dr. Catherine Liu

#Foley #Urinalysis
for Interpreting Urine ... Catherine Liu #Foley #Urinalysis
Urinalysis & Urine Sodium 
Theophilus Protospatharius, a seventh-century physician who wrote the first manuscript focused exclusively
Urinalysis & Urine ... exclusively on urine ... determined heating urine ... differences in urine ... #Urinalysis #crystals
Urine Microscopy Instructions - How to spin urine

1. Collect a fresh urine sample (5 – 10
Urine Microscopy ... - How to spin urine ... Collect a fresh urine ... perform a quick urinalysis ... Instructions #Procedure #Urinalysis
Urine Color - Differential Diagnosis
Red Urine:
 • Medical conditions: bleeding, porphyria, factitious disorder
 • Meds: rifampin,
Urine Color - Differential ... Diagnosis Red Urine ... spinach) Orange Urine ... ) Purple Urine: ... Differential #Diagnosis #urinalysis
Urine Microscopy Crystals
Uric Acid crystals:
 - Formation promoted by acidic urine
 - Seen in tumor lysis
Urine Microscopy ... promoted by acidic urine ... promoted by alkaline urine ... independent of urine ... comparison #table #urinalysis
Hematuria Workup and Diagnosis Algorithm
 • Confirm hematuria → Urinalysis >3 RBCs/HPF, exclude mimics, repeat testing
Confirm hematuria → Urinalysis ... Symptoms of UTI, urine ... WBCs, or urine ... → Urine culture ... urology #blood #urine
Asymptomatic Bacteriuria - Definition

> 100,000 colony forming units of a single pathogen on two urine cultures
pathogen on two urine ... A positive urinalysis ... predicts positive urine
Hematuria - Differential Diagnosis Framework

Gross Hematuria: Red/Dark urine
 • 1ml blood/liter urine can induce color change
Hematuria: Red/Dark urine ... 1ml blood/liter urine ... more RBC/HPF spun urine ... examination of urine ... by microscopy (Urinalysis
Guide to Acute Kidney Injury (AKI)

What to ask/look for: 
 - HPI, PMH, full ROS
CBC w/ diff - Urinalysis ... UOP/weights - Urine
Approach to Microscopic Hematuria 

Microscopic hematuria is often incidental but may be associated with urologic malignancy.
persons on screening urinalysis ... properly collected urine ... Low-Risk: Repeat urinalysis