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Nursing Field Notes / Renal + Fluid · Compare & contrast

Glomerulonephritis vs Nephrosis 🫘

Two ways the glomerulus breaks — one leaks BLOOD, one leaks PROTEIN

NG-246 RENAL + FLUID ADHD-friendly visual edition

Both are inflammation & scarring of the glomerulus, and both can end in renal failure. The deciding clue is what is leaking out: Glomerulonephritis leaks BLOOD after a strep infection 🦠 · Nephrosis leaks MASSIVE PROTEIN from an autoimmune attack 🥩.

📄 Simple Nursing original — opens in Drive →

🦠 GN = after STREPInflammation + scarring → blood in urine, high BP. Deadly: renal failure & HTN crisis.
🥩 Nephrotic = Nasty protein lossMassive protein dumped into urine → low albumin → whole-body edema.
🧪 The lab that decidesGN: WBC high, ASO titer + · Nephrotic: albumin LOW, protein 3+ / 4+.
💊 The drug that decidesGN: antibiotics + ABCD BP meds · Nephrotic: steroids “-sone”.
🦠

SIDE A · GLOMERULONEPHRITIS

THE STREP ONE

An infection somewhere else sends the immune system to attack the kidney by mistake — and the filter starts bleeding.

🧨 CAUSE: an infection — typically STREP

Glomerulo = the glomerulus · nephr = kidney · itis = inflammation. So: inflammation & scarring of the kidney's filter.

⏱️ THE 2-WEEK DELAY — why the strep is already GONE DAY 0 🦠 Strep throat or strep skin infection (impetigo) ~DAY 14 ✅ Infection usually GONE client feels better 1–2 WEEKS LATER 🚨 KIDNEY symptoms dark urine, puffy face, high BP, low urine output antibodies build up immune complexes clog the glomerulus

KEY ASSESSMENT Ask about a recent strep infection. The client will often say “I had a sore throat a couple of weeks ago but it went away.” That sentence is the diagnosis.

🧠 “The strep leaves, the antibodies stay.” The bug is gone — the immune complexes it left behind are what clog the filter. That's why the client feels fine, then suddenly doesn't.

🔬 What is happening inside the glomerulus

✅ HEALTHY FILTER RBCs 🔴 and protein 🟡 are too big — they STAY IN Urine = clear, no blood, no protein 🔥 INFLAMED & SCARRED Scarring lets RBCs 🔴 escape — and SOME protein 🟡 Urine = tea/cola colored + RBC casts
🧠 “Nephr-ITIS = the filter is on FIRE.” A burnt screen has holes in it — big enough for red cells to squeeze through, but the screen is still mostly there, so only some protein escapes.

🚨 REPORT these key signs

  • 🤕 Headache & mental status changes — the brain sign of a hypertensive crisis.
  • 🤢 Nausea & vomiting
  • 💧 Oliguria — no or low urine output (<30 mL/hr / <400 mL/day)
  • ⚖️ New, sudden, rapid weight gain
  • 🥩 Increased protein in the urine NCLEX TIP
  • 🌡️ Fever + a recent strep infection

Also expect: periorbital/facial edema (worst in the morning), tea- or cola-colored urine, and hypertension.

🧠 “HONeW” — Headache & mental changes · Oliguria · Nausea/vomiting · Weight gain. Say it like “ho-new” — everything on this list is NEW and sudden.

🧪 Labs that name it

LabIn glomerulonephritis
WBC (blood)HIGH — there was an infection
UA proteinRaised, but LOWER than nephrotic
UA blood / RBC castsPRESENT — the signature finding
ASO titerElevated = proof of recent strep
BUN & creatinineRising — the filter is failing
Blood pressureHIGH 🚨
🧠 ASO = “A Strep Occurred.” The titer is the receipt for an infection the client already got over.

🚨 DEADLY COMPLICATION: Renal failure & hypertensive crisis

🔥 Glomeruli inflamed & scarred
▼
💧 Can't filter → oliguria → fluid stays in
▼
⚖️ Sudden weight gain + edema + rising BUN/creatinine
▼
🩸 HYPERTENSIVE CRISIS → headache, vision changes, altered mental status, seizure

Never chart a new headache with confusion in a glomerulonephritis client and move on — that is the crisis announcing itself. Take a BP and call the provider.

🧠 Water can't leave → pressure can't drop. Every symptom of GN is one sentence: the fluid has nowhere to go.
🥩

SIDE B · NEPHROSIS

THE PROTEIN ONE

Nephrotic syndrome = Nasty protein loss. Same inflammation and scarring — but the holes are so big that albumin pours out.

⭐ The key difference: HIGH, massive amounts of protein dumped into the urine

NEPHROTIC GLOMERULUS · the sieve became a colander huge gaps in the filter ALBUMIN pours out 🟡 FROTHY, FOAMY urine 🩸 BLOOD ALBUMIN FALLS “hypoalbuminemia” normal 3.5–5.0 g/dL 💧 NOTHING HOLDS WATER IN albumin is the sponge that keeps fluid inside the blood vessel 🎈 WHOLE-BODY EDEMA face, belly (ascites), legs — “anasarca” + rapid weight gain
🧠 “Nephrotic = Nasty protein loss.” Albumin is the sponge in the bloodstream. Lose the sponge and the water walks out into the tissues — that's why nephrotic edema is everywhere, not just the face.

🧨 CAUSE: autoimmune — the body attacks itself

Classically LUPUS (systemic lupus erythematosus) and other autoimmune disease, where the immune system attacks its own glomerulus.

Also: diabetes, long-standing hypertension, and some infections and drugs can damage the glomerulus the same way.

🧠 Lupus = “the wolf that bites its own kidney.” No outside germ to blame — the attack is coming from inside the house.

🧠 TRIGGERS: the 4 S's that set off an immune response

😖STRESSemotional or physical
🦠SICKNESSor sepsis / infection
🚬SMOKING 
☀️SUNand hot temperatures

Teach it: avoid the sun and wear sunscreen, stop smoking, manage stress, and report any infection early — a flare is what damages the kidney further.

🧠 “Stress · Sick · Smoke · Sun” — four S's, one flare. Picture a lupus butterfly rash lighting up on a hot sunny day.

🧪 Labs that name it — and why edema follows

THE TWO NUMBERS THAT SEAL THE DIAGNOSIS 🩸 SERUM ALBUMIN (g/dL) LOW · “HYPOALBUMINEMIA” 🚨 nephrotic 3.5 – 5.0 NORMAL ✅ HIGH 🥩 URINE PROTEIN NONE = NORMAL ✅ TRACE / 1+ · GN range 3+ / 4+ MASSIVE = NEPHROTIC 🚨 Nephrotic-range proteinuria is classically over 3.5 g in 24 hours. 💧 WHY THE SWELLING HAPPENS BLOOD VESSEL — albumin sponges gone 🟡❌ Fluid escapes into the TISSUE → periorbital + generalized edema → ascites, pleural effusion, anasarca → rapid weight gain (1 kg = 1 L)

Also expect: hyperlipidemia (the liver over-produces when albumin drops), clotting risk (anticlotting proteins are lost in the urine too — watch for DVT), and infection risk (immunoglobulins are lost as well).

🧠 “Low albumin, high everything else.” Protein down in the blood, protein up in the urine, cholesterol up, clots up, infections up. One leak, five problems.
⚖️

TELL THEM APART & TREAT

THE DECIDING CLUE

If you only remember one line: GN bleeds after strep · Nephrosis dumps protein from autoimmune.

👀 The 3-second visual: look at the cup, look at the swelling

🦠 GLOMERULONEPHRITIS TEA / COLA colored = BLOOD + RBC casts PUFFY EYES / FACE worst in the morning 🩸 BP HIGH → hypertensive CRISIS 🧪 WBC HIGH · protein raised but LESS 🥩 NEPHROSIS (nephrotic) FROTHY / FOAMY = MASSIVE protein SWOLLEN EVERYWHERE “anasarca” + ascites 🧪 ALBUMIN LOW (under 3.5 g/dL) 🥩 urine protein 3+ / 4+
🧠 Brown cup vs bubble cup. Hold the two specimens up side by side: iced tea = glomerulonephritis, beer foam = nephrotic. That single picture answers most compare questions.

⚖️ Side-by-side — every line that separates them

Feature🦠 GLOMERULONEPHRITIS🥩 NEPHROSIS (nephrotic)
CauseINFECTION — typically strep, usually gone in 14 daysAUTOIMMUNE — lupus; triggered by the 4 S's
What leaksBLOOD 🩸 + some proteinMASSIVE PROTEIN 🥩
Protein lossLESS — lower proteinuria on UAMORE — high proteinuria on UA
Urine looks likeTea / cola colored, RBC castsFrothy, foamy
Key blood labWBC HIGH, ASO titer elevatedALBUMIN LOW — hypoalbuminemia
EdemaPeriorbital / facial, moderateGeneralized — anasarca, ascites
Blood pressureHIGH 🚨 — HTN crisis riskVariable; often normal or low
Deadly complicationRenal failure & HTN crisisRenal failure, clots (DVT/PE), infection
Treatment headlineTreat the INFECTION + ABCD BP medsSTEROIDS — “-sone”
Protein in the dietLIMIT protein NCLEX TIPModerate protein + low sodium
🧠 “GN = Germ & blood. NS = No albumin, Nasty protein.” Two letters, two leaks. If the stem mentions a sore throat two weeks ago → GN. If it mentions lupus or 3+ protein → nephrotic.

💊 TREATMENT A — Glomerulonephritis: kill the cause, drop the pressure

1
🎯 Treat the cause & remove the trigger — the cause here is INFECTION
2
💊 Educate: finish ALL the antibiotics — even after they feel better
3
🥩 LIMIT protein NCLEX TIP — less protein in = less waste for a broken filter
4
🧂 Restrict sodium & fluid, strict I&O, daily weights
5
🩸 Antihypertensives — the ABCD
🅰️🅱️©️🅳 — FOUR CLASSES THAT DROP BP A ACE & ARBs “-pril” lisinopril “-sartan” losartan B BETA blockers “-olol” slow the heart, lower the pressure C CCB calcium channel blockers relax the vessels D DIURETICS “-ide” LOOP: furosemide THIAZIDE: hydrochlorothiazide ⚠️ BOTH “-IDE” DIURETICS ARE POTASSIUM WASTERS — watch for HYPOKALEMIA UNDER 3.5 = HYPOKALEMIA 🚨 3.5 – 5.0 mEq/L NORMAL OVER 5.0 HIGH Low K⁺ signs: muscle weakness, leg cramps, flat T waves, U waves, dysrhythmias.
🧠 “ABCD drops the BP; the D drops the K⁺ too.” Both of these -ide diuretics waste potassium (careful — not every drug ending in -ide does; the K⁺-sparing amiloride is the exception) — so a client on furosemide or hydrochlorothiazide gets a potassium check and a banana-and-potato conversation.

💊 TREATMENT B — Nephrosis: calm the immune system

1
💊 STEROIDS — “-sone”: PREDNISONE — shuts down the autoimmune attack on the glomerulus
2
🎯 Remove the trigger — the 4 S's: stress, sickness, smoking, sun
3
🧂 LOW SODIUM diet + fluid limits to control the massive edema
4
⚖️ Daily weight & abdominal girth — the fastest way to track anasarca (1 kg = 1 L)
5
🩸 ACE inhibitors / ARBs are also used here — they reduce how much protein spills out

⚠️ Steroid teaching: take with food, never stop a steroid abruptly (taper), expect higher blood glucose, watch for masked infection — steroids can hide a fever.

🧠 “-sone calms the storm.” Prednisone for the autoimmune one; antibiotics for the infectious one. Match the drug to the cause and you can never mix these two diseases up.

✅ Nursing care BOTH diseases share

  • ⚖️ Daily weight, same time/scale/clothes — best fluid measure.
  • 💧 Strict I&O; report output <30 mL/hr.
  • 🩸 Blood pressure every shift; report new headache or confusion.
  • 👀 Assess periorbital edema first thing in the morning.
  • 🦠 Protect from infection — both are immune-compromised states.
  • 🧪 Track BUN, creatinine, albumin, potassium and the UA.
🧠 Scale, cuff, cup. Weight, blood pressure, urine output — three assessments catch almost every deterioration in either disease.

🚨 The traps that cost points

  • ❌ “Give more protein — they're losing it!” In glomerulonephritis you LIMIT protein, because the broken filter cannot clear the waste it makes.
  • ❌ “Antibiotics fix nephrotic syndrome.” No — that's the autoimmune one. Steroids.
  • ❌ “The strep infection is still there.” Usually it is already gone — that's why the client feels blindsided.
  • ❌ Ignoring a leg that is swollen on one side in nephrotic syndrome — think DVT, they lose clotting inhibitors in the urine.
🧠 Losing protein does NOT mean eating protein. That single reversal is the most tested idea on this whole page.
⚡

QUICK RECALL

SAY IT OUT LOUD
🦠 GN = strep → 2 weeks laterblood in urine · high BP · limit protein
🥩 Nephrotic = Nasty protein losslow albumin · full-body edema · steroids
🩸 ABCD for BPACE/ARB · Beta · CCB · Diuretic “-ide” (K⁺ wasters)
🚨 Reportheadache + confusion · oliguria · sudden weight gain
🎯 Cover & check — 6 rapid-fire questions
Q1: A client had strep throat 2 weeks ago and now has cola-colored urine and a BP of 178/104. Which disease?
Glomerulonephritis. Post-strep, blood in the urine, hypertension — and the infection itself is usually already gone.
Q2: What is the one key difference in nephrotic syndrome?
HIGH, massive amounts of protein dumped into the urine — far more than glomerulonephritis. Blood albumin falls (hypoalbuminemia).
Q3: Name the 4 S triggers of an autoimmune flare.
Stress · Sickness or sepsis (infection) · Smoking · Sun (hot temperatures).
Q4: Protein in the diet for glomerulonephritis — more or less?
LIMIT protein. The damaged filter can't clear the nitrogen waste that protein produces. This is a classic NCLEX reversal.
Q5: Spell out the ABCD antihypertensives and the potassium warning.
A = ACE inhibitors (“-pril,” lisinopril) & ARBs (“-sartan,” losartan). B = Beta blockers. C = Calcium channel blockers. D = Diuretics (“-ide”: furosemide, hydrochlorothiazide) — both are potassium wasters, so watch for hypokalemia, potassium under 3.5.
Q6: Which one gets steroids, and name the drug family.
Nephrosis / nephrotic syndrome — steroids ending in “-sone,” such as prednisone. Never stop them abruptly; they must be tapered.