Compare conditions

Put any two — or three — conditions side by side, adult or pediatric, to spot the look-alike differences fast, row by row.

Nephrotic Syndrome

—

In one line

·The kidney's filter broke and now protein leaks out, so the blood loses what it needs to hold fluid inside vessels.

—

Normal physiology

·The kidney filter—called the glomerulus—has three layers that work together like a fence: endothelial cells (the inner lining), the basement membrane (a mesh in the middle), and podocytes (cells with little feet on the outside). The podocyte feet fit together tightly and carry a negative electrical charge, so they block albumin (which is also negative and relatively large) from leaving the blood. Normally almost no albumin gets into the urine.

—

What goes wrong

·The podocytes—those cells with little feet that form the outer layer of the kidney filter—get damaged. The feet flatten, fuse together, or pull apart, so gaps open in the fence. Albumin and other proteins pour through into the urine. Blood albumin drops below 3 g/dL and urine protein rises above 3.5 grams per day (that's the definition of nephrotic-range proteinuria).

—

Hallmark signs

·Swelling around the eyes and in the legs (edema)
·Foamy or frothy urine
·Weight gain (often several pounds in a few days)
·Fatigue and low energy
·Loss of appetite or belly fullness
·High cholesterol and fats in the blood
·Infections happen more often (especially pneumonia or skin infections)
·Blood clots in legs or lungs (deep vein clot formation (thrombosis) or pulmonary embolism (a clot lodging in a lung artery))

—

Red flags · escalate now

·Sudden chest pain or trouble breathing (may mean a blood clot traveled to the lungs)
·Fever with chills or a new cough (may mean pneumonia or another serious infection)
·Severe belly pain or swelling that comes on fast (may mean infection of fluid in the belly or a clot in a belly vein)
·Blood in the urine that you can see, or urine that turns cola-colored (may mean the kidneys are inflamed in a dangerous way, not just leaking)
·Swelling so bad you can't breathe well lying flat, or swelling in the face and throat (may mean fluid is backing up into the lungs or airway)

—

Workup

·Urine protein-to-creatinine ratio (spot urine) or 24-hour urine protein
·Serum albumin
·Serum cholesterol and triglycerides (lipid panel)
·Serum creatinine and estimated glomerular filtration rate (eGFR)
·Urinalysis with microscopy
·Kidney biopsy (if cause is unclear, patient does not respond to steroids, or patient is an adult)
·Complement levels (C3, C4) and autoantibody panel (ANA, anti-dsDNA, hepatitis B and C, HIV)

—

Treatment

·ACE inhibitor (e.g., lisinopril) or ARB (e.g., losartan)
·Loop diuretic (e.g., furosemide) plus low-sodium diet (under 2 grams of sodium per day)
·Disease-specific therapy: corticosteroids (e.g., prednisone) for minimal change disease, immunosuppressants (e.g., cyclosporine, tacrolimus, rituximab) for FSGS or membranous nephropathy, or tight diabetes and blood pressure control for diabetic nephropathy
·Statin (e.g., atorvastatin or simvastatin)
·Anticoagulation (warfarin or low-molecular-weight heparin such as enoxaparin) if albumin is less than 2.0 to 2.5 g/dL or a clot is found
·Albumin infusion (intravenous) in severe, acute hypoalbuminemia (albumin less than 2.0 g/dL) with life-threatening swelling or low blood pressure

—

NCLEX trap

·Nephrotic syndrome means the kidney filter is broken and leaking protein. A diuretic (water pill) only pushes out extra water for a little while — it does not fix the broken filter. Albumin stays low, so fluid creeps back into the tissues within days. You must find the real cause: minimal change disease (common in kids), FSGS (focal segmental glomerulosclerosis, where parts of the filter scar), membranous nephropathy (the filter's basement membrane thickens), lupus attacking the kidneys, or damage from diabetes. Each cause needs its own medicine — steroids for minimal change, stronger immune drugs for FSGS or membranous, and tight blood-sugar control for diabetes. Without treating the underlying disease, the patient will keep leaking protein and the cycle never stops.
·When albumin (the main protein in blood) drops very low, the liver senses the shortage and ramps up production of all proteins — including cholesterol carriers like LDL and VLDL. The high cholesterol is the liver trying to help, not a sign of bad eating. Diet and exercise alone will not bring cholesterol down as long as the kidney filter keeps leaking albumin. You must stop the protein leak first with the right medicine for the cause (steroids for minimal change, immunosuppressants for membranous or FSGS). Once albumin climbs back up and stays above 3, cholesterol usually drops on its own. If it stays high after remission, then you can add a statin, but fix the leak first.
·Foamy urine means protein is spilling into the pee, and when you shake it or it hits the toilet water, it makes bubbles — just like egg whites. This is a red flag that the kidney filter (the glomerulus, the tiny ball of blood vessels that cleans waste) is broken. Do not wait. Get a urine dipstick and a spot urine protein-to-creatinine ratio right away, plus blood tests for albumin, cholesterol, and kidney function. If the urine protein is very high (over 3 to 3.5 grams per day or a ratio over 3), that confirms nephrotic syndrome. In kids, the cause is usually minimal change disease, and starting steroids early (prednisone 2 mg per kg per day, max 60 mg) stops damage fast and brings the protein leak to zero in about 80 to 90 percent of cases within 4 to 6 weeks. Waiting lets albumin drop lower, swelling get worse, and raises the risk of blood clots and serious infections.
·Nephrotic syndrome makes blood clot too easily because the kidneys leak antithrombin III (a protein that keeps clots from forming) into the urine. When antithrombin is low, clotting factors tip the balance toward clot formation, especially in the deep veins of the legs (deep vein clot formation (thrombosis), or DVT) and the renal veins (the big veins draining the kidneys). Before sending anyone home, check the swollen leg carefully: Is one calf bigger than the other? Is it warm, red, or painful when you squeeze? Does the patient have sudden chest pain or shortness of breath (signs a clot broke off and traveled to the lungs, called pulmonary embolism (a clot lodging in a lung artery))? If any of these are present, this is a medical emergency. Get an ultrasound of the leg or a CT scan of the chest right away. If a clot is found, start anticoagulation (usually low-molecular-weight heparin or warfarin). Even without obvious clot signs, if albumin is very low (under 2 to 2.5 g/dL) in an adult with membranous nephropathy, consider preventive (prophylactic) anticoagulation after weighing bleeding risk, because clot risk is highest in this group.
·Kids with nephrotic syndrome lose immunoglobulins (antibodies that fight germs) in their urine, so they cannot fight off bacteria as well. The biggest danger is Streptococcus pneumoniae (pneumococcus), which causes pneumonia, blood infections, and meningitis. The right protection is the pneumococcal vaccine (PCV13 and PPSV23 if not already given), NOT daily antibiotics. Teach parents the warning signs of infection: fever over 100.4°F (38°C), shaking chills, trouble breathing, stiff neck, or acting very sleepy or confused. If any of these happen, bring the child to the emergency room right away. Antibiotics are started immediately if infection is suspected or proven (blood cultures, chest X-ray), but you do not give them every day to prevent infection — that breeds resistant bacteria and does not help. Vaccines are the shield; antibiotics are the rescue.
·Anticoagulation (blood thinners like warfarin, apixaban, or low-molecular-weight heparin) is not automatic for everyone. You use it only in specific high-risk situations: (1) a proven clot has already formed (DVT, pulmonary embolism (a clot lodging in a lung artery), or renal vein clot formation (thrombosis) seen on imaging), or (2) in adults with membranous nephropathy, albumin is very low (under 2 to 2.5 g/dL) and there are other clot risks like being bedbound, having cancer, or a prior clot history — then preventive (prophylactic) anticoagulation may be considered after a careful risk-benefit discussion, because it also raises bleeding risk. Kids with minimal change disease usually have higher albumin (around 2 to 3) and respond fast to steroids, so clot risk is lower and anticoagulation is rarely needed unless a clot actually forms. Always weigh the bleeding danger: check for recent surgery, falls, very high blood pressure (over 180 systolic), or low platelets before starting. Never give a blood thinner by reflex — use evidence and the patient's individual risk profile.

—

Install Maldek by Hill as an app — studies work even offline