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Right flank pain Vomiting 1 episode Temperature 99 fahrenheit
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Quick answer: The USG report shows right renal Grade I-II hydronephrosis (HDN) with a dilated upper ureter, most likely due to an obstructing ureteric calculus (kidney stone). Combined with the right flank pain, one episode of vomiting, and low-grade fever (99°F), this is a classic presentation of right-sided ureteric colic with partial ureteral obstruction.
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Here is a full clinical analysis of this case:
Clinical Assessment
Patient: Dilshada, 24-year-old female
Date: 13-08-2026
Presenting Complaints
- Right flank pain
- 1 episode of vomiting
- Low-grade fever (99°F / 37.2°C)
USG Abdomen & Pelvis - Key Findings
- Right kidney: Grade I-II hydronephrosis (HDN) with dilated upper ureter - likely secondary to a ureteric calculus
- Left kidney: Normal, no hydronephrosis or calculus
- Bilateral VUJ (vesico-ureteric junction): Clear
- Uterus & Ovaries: Normal - no gynecological cause identified
- Liver, gallbladder, pancreas, spleen: All normal
Diagnosis
Right Ureteric Calculus with Partial Ureteral Obstruction causing:
- Grade I-II right hydronephrosis (HDN)
- Dilated upper ureter
- Ureteric/renal colic (flank pain + vomiting)
- Low-grade fever (may reflect inflammation or early infection)
The clinical triad of flank pain + vomiting + fever, combined with USG findings, is classic for an obstructing upper ureteric stone.
Investigations to Order Now
| Test | Reason |
|---|---|
| Urine routine/microscopy | Check for hematuria, pyuria, crystals, infection |
| Urine culture & sensitivity | Rule out concurrent UTI/urosepsis - important given fever |
| Serum creatinine & urea | Assess baseline kidney function / obstruction impact |
| Serum electrolytes | Check for derangement |
| CBC (complete blood count) | Elevated WBC would indicate infection/sepsis risk |
| Non-contrast CT KUB | Gold standard - USG missed exact stone location/size; CT confirms stone, measures size, guides treatment |
| Urine pregnancy test | Standard of care in all females of reproductive age with abdominal/flank pain |
Management
1. Pain Control (First Priority)
- NSAIDs are first-line for renal colic - as effective or superior to opioids with fewer side effects
- Diclofenac sodium 75 mg IM (if vomiting prevents oral route) OR
- Ketorolac 15-30 mg IV/IM - excellent for acute colic
- Ensure adequate hydration (IV normal saline 75-150 mL/hr) since NSAIDs can risk AKI in dehydration
- Goldman-Cecil Medicine notes NSAIDs are preferred over opioids for renal colic
- Antiemetic (e.g., ondansetron 4 mg IV or metoclopramide) for vomiting
2. Medical Expulsive Therapy (MET)
If the stone is < 10 mm and there is no sign of sepsis or significant obstruction:
- Tamsulosin 0.4 mg orally once daily - an alpha-blocker that reduces ureteral spasm and increases spontaneous stone passage rates by ~50%
- Can be attempted for 4-6 weeks if pain is controlled, kidney function is normal, and no UTI
- Repeat ultrasound every 1-2 weeks to monitor
As noted in Goldman-Cecil Medicine: "Expulsive therapy can reduce ureteral spasm and increase spontaneous passage rates by about 50%... tamsulosin (0.4 mg orally daily)... appears to promote the passage of the stone more quickly and effectively than nifedipine."
3. Antibiotic Consideration
- Given the low-grade fever, send urine culture first
- If urine shows signs of infection OR fever rises, empirical antibiotics should be started (e.g., ciprofloxacin 500 mg BD or ceftriaxone 1g IV if hospitalized)
- Fever + obstruction = urological emergency - requires urgent decompression (ureteral stenting or nephrostomy)
4. Indications for Urgent Urological Referral / Hospitalization
Admit and refer to urology if ANY of the following occur:
- Fever worsening or signs of sepsis (hypotension, rigors, chills)
- Persistent vomiting / inability to tolerate oral intake
- Renal function deteriorating (rising creatinine)
- Stone > 10 mm (unlikely to pass spontaneously)
- Bilateral obstruction or solitary kidney
5. Interventional Options (if conservative management fails)
- Ureteroscopy with laser lithotripsy (URS) - preferred for upper ureteric stones
- Extracorporeal shock wave lithotripsy (ESWL) - for smaller stones
- Ureteric stenting or percutaneous nephrostomy - if infected hydronephrosis (pyonephrosis) develops
Reassurance Points
- Gynecological causes ruled out: ovaries normal, no free fluid, no cyst or mass
- Left kidney is completely normal
- Bilateral VUJ clear - no bilateral obstruction
Summary Plan
| Priority | Action |
|---|---|
| Immediate | Pain relief (NSAID IM/IV), antiemetic, IV fluids |
| Urgent | Urine R/M, urine culture, CBC, creatinine, CT KUB |
| Short-term | Tamsulosin 0.4 mg OD (MET), monitor fever closely |
| Follow-up | Repeat USG in 1-2 weeks; urology referral if no improvement in 4-6 weeks |
| Red flag watch | Fever spike, chills, or worsening pain = emergency urology referral |
Note: This analysis is for clinical decision support. Final management should be individualized by the treating physician after examination and lab results.
- Goldman-Cecil Medicine, Medical Expulsive Therapy section
- Rosen's Emergency Medicine, Nephrolithiasis Management
Can we give cefixime 200mg bd
Cefixime 200 mg BD is a reasonable oral antibiotic choice here, but with some important caveats specific to this case.
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Cefixime 200 mg BD - Assessment for This Case
Short Answer: Yes, but with conditions
Cefixime is a 3rd-generation oral cephalosporin with good gram-negative coverage (E. coli, Klebsiella, Proteus - the most common urinary pathogens). It is a reasonable empirical antibiotic here, but the decision depends on what your goal is.
Context-Specific Analysis
This patient has a ureteric calculus with Grade I-II hydronephrosis and a low-grade fever (99°F / 37.2°C). The fever is mild and may simply be inflammatory rather than infective. Until urine culture results are available, the clinical question is:
Is this infection, or just inflammation from obstruction?
| Scenario | Is Cefixime Appropriate? |
|---|---|
| Low-grade fever, no pyuria on urine R/M, no systemic signs | Antibiotic may not be needed yet - watchful waiting |
| Mild UTI / pyuria on urine R/M, patient stable, tolerating orals | Yes - Cefixime 200 mg BD x 7-10 days is appropriate |
| Fever with confirmed upper tract infection (pyelonephritis pattern) | Cefixime is acceptable but ciprofloxacin 500 mg BD is the preferred first-line per IDSA guidelines |
| High fever, chills, rigors, vomiting preventing oral intake | No - parenteral antibiotics required (ceftriaxone 1g IV or ciprofloxacin IV) |
What the Guidelines Say
Per IDSA guidelines cited in Campbell-Walsh Urology and Rosen's Emergency Medicine:
- Fluoroquinolones (ciprofloxacin 500 mg BD x 7 days) are first-line for pyelonephritis/upper UTI
- Oral cephalosporins (like cefixime) are acceptable when quinolone resistance is a concern, but are recommended after an initial dose of long-acting parenteral antibiotic (ceftriaxone 1g IM/IV) to ensure tissue/blood-level coverage
- Cefixime achieves excellent urine levels but lower tissue/blood levels compared to fluoroquinolones - this matters in upper tract infection
Practical Recommendation for Dilshada
- Send urine R/M and culture first - this is the most important step before committing to any antibiotic
- If urine shows infection (pyuria, bacteriuria) and she is stable and tolerating orals:
- Give ceftriaxone 1g IM single dose + then cefixime 200 mg BD x 7-10 days - this is a well-supported regimen
- OR use ciprofloxacin 500 mg BD x 7 days as a simpler alternative (if local resistance < 10%)
- If urine is clean - hold antibiotics, repeat if fever spikes
- If fever worsens or she develops rigors/chills - hospitalize and switch to IV antibiotics
One Important Caution
She has right-sided ureteral obstruction. Antibiotics alone do NOT clear an infected obstructed system - the obstruction itself must be relieved (ureteral stent or nephrostomy) if there is confirmed infection behind the stone. An infected, obstructed kidney is a urological emergency regardless of which antibiotic is chosen.
- Rosen's Emergency Medicine, Complex Urinary Tract Infection
- Campbell-Walsh Urology, Pyelonephritis Management
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