41 results
Fractional Excretion of Sodium - FENa
Fractional Excretion of Sodium (FENa) = (Urine Na+ x Serum Cr)
Fractional Excretion of Sodium ... Fractional Excretion of Sodium ... (FENa) = (Urine ... / (Serum Na+ x Urine ... > 2% suggests ATN
General approach to AKI - Checklist

Urine electrolytes & FENa - Previously, it was believed that urine
- Checklist Urine ... sodium excretion ... fractional excretion of sodium ... differentiate between pre-renal ... and intrinsic renal
Urinalysis & Urine Sodium 
Theophilus Protospatharius, a seventh-century physician who wrote the first manuscript focused exclusively
Sodium Theophilus ... used with normal renal ... sodium < 20 mEq ... Tubular Necrosis (ATN ... sodium > 40 mEq
Hyponatremia Differential Diagnosis Algorithm - Utilizing Uric Acid 
ADH promotes Urea/uric acid excretion along with water
Osmolarity 2) Urine ... Osmolarity 3) Urine ... Sodium 4) Serum ... High Uric Acid → renal ... Algorithm #nephrology #sodium
Urinary Casts in the setting of renal disease
#Clinical #Nephro #Urine #Microscopy #Casts #Comparison #Chart #ATN #AIN
the setting of renal ... Clinical #Nephro #Urine ... Comparison #Chart #ATN
Volume Based Approach to Hyponatremia
Hypovolemic, Serum uric acid >4
 • Urine Na <20: Extra-renal losses
 •
Na <20: Extra-renal ... losses • Urine ... Na >30: Renal losses ... Na > 30: Renal ... algorithm #diagnosis #sodium
Guide to Acute Kidney Injury (AKI)

What to ask/look for: 
 - HPI, PMH, full ROS
UOP/weights - Urine ... protein/Cr - Renal ... Liano 1996) - ATN ... CKD— 13% (mostly ATN ... and pre-renal)
Lactated Ringers (LR) vs Normal Saline (NS) - Comparison

Composition of LR:
 • Sodium 130 mEq/L
 •
filtration - Renal ... stretch - decreased renal ... blood flow and renal ... Decreased GFR, urine ... Instability: - Renal
Rhabdomyolysis - Differential Diagnosis and Management Summary

Trauma:
 • Immobilization, Crush iniury, Compartment syndrome, Electrical injury
Exertional:
 •
renal ischemia ... oxidative iniury Treatment ... hour with goal urine ... hyperkalemia or ATN ... Summary #causes #treatment
Causes of Generalized Edema - Differential Diagnosis Algorithm
Overfill (Increased renal sodium retention, Urine Na > 40meq/L)
Overfill (Increased renal ... sodium retention ... , Urine Na > 40meq