Glomerular Greta
A sore throat two weeks ago, now smoky urine, puffy eyes and a climbing blood pressure
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Glomerular Greta
Post-Streptococcal Glomerulonephritis: The Tea-Colored Urine After the Sore Throat
A sore throat two weeks ago, now smoky urine, puffy eyes and a climbing blood pressure
The sore throat healed last week — now Greta's urine looks like tea and her eyes are puffy every morning.
mnemonurse.com
The story
The sore throat healed last week — now Greta's urine looks like tea and her eyes are puffy every morning.
Greta's kidneys pay for a strep infection her throat already forgot. One to two weeks after a streptococcal throat or skin infection, immune complexes lodge in the glomeruli and inflame them. The classic picture in a school-age child: dark tea- or cola-colored urine from red blood cells leaking through, puffy eyelids especially in the morning, mild to moderate high blood pressure, and decreased urine output. Labs show red blood cells and casts in the urine, low complement C3, elevated ASO titer, and mild rises in BUN and creatinine. Most children recover fully with supportive care: monitor blood pressure, restrict sodium and fluids during the acute phase, and finish the antibiotic course for the original infection.
The full story of Glomerular Greta
Greta's neighbors nicknamed her the family's little Glomerular Greta after her mother joked, half seriously, that Greta's kidneys seemed to filter every ounce of drama out of the household the way her body was now failing to filter anything out of her blood. Two weeks earlier, Greta, age seven, had suffered a nasty case of untreated streptococcal pharyngitis that resolved on its own without antibiotics. What her family did not realize was that antigen-antibody immune complexes formed during that infection were quietly circulating and depositing themselves in her kidney's glomeruli, triggering inflammation that would compromise her ability to filter blood properly. The inflamed glomeruli begin leaking red blood cells and protein into her urine while simultaneously failing to excrete sodium and water, setting the stage for the fluid retention and hypertension soon to follow.
Greta's mother brings her to the pediatrician after noticing her urine has turned an alarming tea-colored, almost cola-like hue over the past two mornings, and that Greta's eyes appear puffy and swollen each morning upon waking, though the swelling seems to lessen slightly by afternoon. Greta herself feels generally tired but denies any pain, and her mother recalls the strep throat episode from two weeks prior only after the pediatrician specifically asks about recent infections. A urinalysis reveals gross hematuria, proteinuria, and red blood cell casts, while bloodwork shows an elevated antistreptolysin O titer alongside low serum complement, confirming a diagnosis of post-streptococcal glomerulonephritis. Greta is admitted for close monitoring of her fluid status and blood pressure.
By her second hospital day, Greta's condition has clearly progressed. Her blood pressure, initially borderline at admission, has climbed to 142/94 mmHg, and her urine output has fallen to just 15 milliliters per hour despite adequate oral intake. Her weight has increased by 1.2 kilograms since admission, reflecting worsening fluid retention, and her periorbital edema now persists throughout the entire day rather than improving by afternoon. She complains of a mild headache, a concerning symptom in the setting of rising blood pressure, and her nurse recognizes that these combined findings, hypertension, oliguria, and progressive edema, signal that Greta's inflamed glomeruli are struggling badly to keep pace with her fluid and sodium load.
The nurse responds with vigilant, structured monitoring rather than a single dramatic intervention. She weighs Greta daily at the same time each morning using the same scale, measures her blood pressure at least every four hours, and tracks strict intake and output to catch any further decline in urine production immediately. She enforces the prescribed sodium and fluid restriction, administers antihypertensive medication as ordered, and avoids any nephrotoxic drugs, including NSAIDs, that could further stress Greta's inflamed kidneys. She also ensures any remaining streptococcal infection is treated with antibiotics and educates Greta's mother that completing every course of antibiotics for future strep infections is the true way to prevent this illness from recurring, reassuring her that most children recover completely.
Remember Glomerular Greta whenever the NCLEX describes a child with tea-colored urine, periorbital edema, and rising blood pressure appearing one to three weeks after a sore throat or skin infection: her name is your cue to think post-streptococcal glomerulonephritis rather than any other renal process. Lock in that daily weight is the single most reliable measure of fluid status, and that rising blood pressure paired with falling urine output are the findings demanding immediate reporting. Remember to contrast Greta sharply with nephrotic syndrome, which produces massive proteinuria and severe edema without gross hematuria. And always remember that finishing prescribed antibiotics for strep throat is the true preventive lesson hidden inside Greta's story.
Story arc
The setup
A 7-year-old had strep throat two weeks ago and finished only half the antibiotic course.
The turn
Her mother notices her urine looks like cola and her eyes are swollen each morning.
The crisis
Her blood pressure is 138/90, her urine output has fallen, and crackles are appearing in her lungs.
The save
Greta rests, sodium and fluids are restricted, her pressure is tracked, and within weeks her urine clears.
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