Nephritic syndrome vs Nephrotic syndrome
How to tell Nephritic syndrome and Nephrotic syndrome apart when a board question makes them look alike.
Blood/RBC casts and hypertension point nephritic; massive protein and lipiduria point nephrotic.
Side by side
Hematuria with RBC casts, hypertension, oliguria, and usually subnephrotic proteinuria under 3.5 g/day.
Heavy proteinuria, hypoalbuminemia, edema, hyperlipidemia, and oval fat bodies.
Inflammatory glomerular capillary injury lets blood leak into urine.
Podocyte or filtration-barrier injury lets albumin leak across the glomerulus.
RBC casts and cola-colored urine are the fastest nephritic clues.
Proteinuria above 3.5 g/day and fatty casts are the fastest nephrotic clues.
The trap
Edema is not enough; hypoalbuminemia is nephrotic, while hypertension with oliguria is nephritic.
Watch it explained
The repair move
When edema appears, immediately ask: is the urine dominated by blood/casts or by heavy protein/lipid?
Try a free question
CoreA child develops cola-colored urine, periorbital edema, hypertension, oliguria, and RBC casts two weeks after a throat infection. Which syndrome best fits?
Show answer and explanation
Answer: A. Nephritic syndrome. Hematuria with RBC casts, hypertension, and oliguria points to nephritic syndrome.
Why the other choices are tempting
- B. Nephrotic syndrome is dominated by heavy proteinuria, hypoalbuminemia, and lipiduria.
- C. ATN causes muddy brown casts rather than RBC casts.
- D. Prerenal azotemia has concentrated urine and bland sediment.
- E. Cystitis causes dysuria and bacteriuria, not glomerular RBC casts.
Flashcards
Tap a card to flip it.
Which urine finding separates nephritic disease from nephrotic disease?
RBC casts or cola-colored hematuria identify glomerular inflammation; oval fat bodies identify lipid-rich heavy protein loss.
What protein threshold makes nephrotic syndrome the better answer?
Protein loss at or above 3.5 g/day is the classic nephrotic cutoff.
Quick answers
What is the fastest way to tell Nephritic syndrome from Nephrotic syndrome?
Blood/RBC casts and hypertension point nephritic; massive protein and lipiduria point nephrotic.
What is the key clue for Nephritic syndrome?
Hematuria with RBC casts, hypertension, oliguria, and usually subnephrotic proteinuria under 3.5 g/day.
What is the key clue for Nephrotic syndrome?
Heavy proteinuria, hypoalbuminemia, edema, hyperlipidemia, and oval fat bodies.
What is the common trap with Nephritic syndrome vs Nephrotic syndrome?
Edema is not enough; hypoalbuminemia is nephrotic, while hypertension with oliguria is nephritic.