# Recurrent Pyelonephritis in Quadriplegia: Rethinking Oral Cefdinir in the Presence of Nephrolithiasis

**Authors:** Mahsum Jafri, Zuhayr Khan, Constantino G Lambroussis

PMC · DOI: 10.7759/cureus.102477 · Cureus · 2026-01-28

## TL;DR

This paper discusses antibiotic selection for treating kidney infections in quadriplegic patients with kidney stones.

## Contribution

It highlights the limitations of cefdinir and suggests fluoroquinolones as a better alternative in such cases.

## Key findings

- Oral cefdinir has limited renal tissue penetration, reducing its effectiveness in complicated infections.
- Fluoroquinolones offer better renal tissue penetration and may improve treatment outcomes.
- Antibiotic choice should consider renal tissue penetration to reduce recurrence in quadriplegic patients.

## Abstract

Patients with cerebral palsy who develop functional quadriplegia are at an increased risk for recurrent urinary tract infections and kidney stones. Impaired bladder emptying, chronic constipation, and reduced physical mobility collectively promote urinary stasis and bacterial growth. Despite the frequency of these complications, there is little guidance in the currently available literature on how to select appropriate empiric oral antibiotics for pyelonephritis in this patient population, especially when renal stones are also present. This case highlights the importance of careful antibiotic selection in patients with neurogenic bladder and nephrolithiasis. Oral cefdinir demonstrates limited renal tissue penetration, which may reduce its effectiveness in treating complicated urinary tract infections. In contrast, fluoroquinolones provide superior penetration into renal tissue, making them a more suitable option in specific scenarios. Choosing antibiotics that align with the patient's clinical presentation and pharmacological requirements can significantly reduce recurrence and improve outcomes in quadriplegic patients with recurrent kidney stones. This case report demonstrates that selecting antibiotics with sufficient renal tissue penetration can improve outcomes in complicated pyelonephritis, with symptom resolution after antibiotic change.

## Linked entities

- **Chemicals:** cefdinir (PubChem CID 6915944)
- **Diseases:** pyelonephritis (MONDO:0006939), nephrolithiasis (MONDO:0008171), cerebral palsy (MONDO:0006497), quadriplegia (MONDO:0001590)

## Full-text entities

- **Genes:** GPT (glutamic--pyruvic transaminase) [NCBI Gene 2875] {aka AAT1, ALT, ALT1, GPT1, SGPT}, SLC17A5 (solute carrier family 17 member 5) [NCBI Gene 26503] {aka AST, ISSD, NSD, SD, SIALIN, SIASD}
- **Diseases:** vomiting (MESH:D014839), functional quadriplegia (MESH:D011782), stone formation (MESH:D058426), dysuria (MESH:D053159), spinal cord injuries (MESH:D013119), Impaired bladder emptying (MESH:D001745), fever (MESH:D005334), Pyelonephritis (MESH:D011704), urinary stasis (MESH:D014647), Electrolyte abnormalities (MESH:D014883), abdominal pain (MESH:D015746), Gut dysbiosis (MESH:D064806), neurogenic bladder (MESH:D001750), calculi (MESH:D002137), hypomagnesemia (OMIM:613882), neurogenic bowel dysfunction (MESH:D055496), flank pain (MESH:D021501), pain (MESH:D010146), Gram (MESH:D016908), cerebral palsy (MESH:D002547), Nephrolithiasis (MESH:D053040), inflammation (MESH:D007249), cyst (MESH:D003560), ureteral obstruction (MESH:D014517), tenderness (MESH:D063806), Chronic constipation (MESH:D003248), hypokalemia (MESH:D007008), negative uropathogens (MESH:D064726), hypercalciuria (MESH:D053565), hydronephrosis (MESH:D006869), urolithiasis (MESH:D052878), Stones (MESH:D007669), urinary infections (MESH:D014552), gastrointestinal complications (MESH:D005767), chills (MESH:D023341), infection (MESH:D007239), urinary retention (MESH:D016055), seizure disorder (MESH:D004827), impaired bowel motility (MESH:D015835)
- **Chemicals:** levofloxacin (MESH:D064704), cefepime (MESH:D000077723), oxalate (MESH:D010070), acetaminophen (MESH:D000082), tamsulosin (MESH:D000077409), calcium (MESH:D002118), potassium chloride (MESH:D011189), phenazopyridine (MESH:D010621), Fluoroquinolone (MESH:D024841), ceftriaxone (MESH:D002443), nitrites (MESH:D009573), cephalosporin (MESH:D002511), cephalexin (MESH:D002506), Cefdinir (MESH:D000077525), oxycodone (MESH:D010098), struvite stones (-)
- **Species:** Klebsiella (genus) [taxon 570], Escherichia coli (E. coli, species) [taxon 562], Proteus (genus) [taxon 210425], Homo sapiens (human, species) [taxon 9606]

## Full text

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## Figures

2 figures with captions in the complete paper: https://tomesphere.com/paper/PMC12947869/full.md

## References

9 references — full list in the complete paper: https://tomesphere.com/paper/PMC12947869/full.md

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Source: https://tomesphere.com/paper/PMC12947869