9 results
Causes of Hypernatremia - Differential Diagnosis
Inadequate water intake:
 • Lack of access to water
Extrarenal hypotonic fluid
Causes of Hypernatremia ... - Differential ... concentrating defect ... insipidus • Nephrogenic ... Diagnosis #Causes #nephrology
Causes of Polyuria - Differential Diagnosis Algorithm
Polyuria - Urine Output > 3L/day, Increased Urine Volume (>2ml/min)
Osmotic
- Differential ... >50% - Proper kidney ... - Unresponsive Kidney ... • Nephrogenic ... #Nephrology #Differential
Inherited Defects in Kidney Tubule Epithelial Cells

Renal glucosuria - Na+-dependent glucose cotransporter
Cystinuria - Amino acid transporter
Bartter
Inherited Defects ... in Kidney Tubule ... #Kidney #Nephrology ... #Diagnosis #Differential ... #Table
Causes of Polyuria - Differential Diagnosis
Excess Intake of Water:
 • Primary polydipsia (a.k.a. "psychogenic polydipsia")
 •
- Differential ... Other: Mannitol Defect ... injury, Tumor • Nephrogenic ... #Differential # ... Diagnosis #Causes #nephrology
Causes of Chronic Kidney Disease - Differential Diagnosis Algorithm
Decreased kidney function (eGFR < 60 ml/min/1.73 m2)
Disease - Differential ... Constipation • Prostate cancer ... Interstitial (Sterile pyuria ... KidneyDisease #Nephrology ... #Differential #
Diuretics and Agents Regulating Renal Excretion

Carbonic Anhydrase Inhibitors (Acetazolamide, Dichlorphenamide)
 • Glaucoma
 • Epilepsy
 • Altitude
nephrotic syndrome • Hyponatremia ... Lithium-induced nephrogenic ... and euvolemic hyponatremia ... Excretion #Diuresis #Nephrology ... #Medications #Table
Oncologic Emergencies - Differential Diagnosis Framework

HEMATOLOGIC ONCOLOGIC EMERGENCIES:
Hyperviscosity Syndrome:
 • Spontaneous bleeding
 • Shortness of breath
of breath • Neurologic ... deficits (peripheral ... • Early death Neutropenic ... coma SIADH: • Hyponatremia ... #diagnosis #cancer
Rhabdomyolysis - Differential Diagnosis Framework and Management Summary

Causes of Rhabdomyolysis:
 • Trauma:
	- Immobilization
	- Crush injury
	- Compartment
Rhabdomyolysis - Differential ... Hyperuricemia • Hyponatremia ... nephrotoxicity to kidney ... per day until stable ... causes #treatment #nephrology
Primary Polydipsia
Definition: Excessive volitional water intake
Epidemiology:
 • 6-20% of patients with psychiatric disorders - Most commonly
• Symptomatic hyponatremia ... hypothalamic thirst center ... dysfunction - K+ deficits ... diabetes insipidus Differential ... diagnosis #management #nephrology