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Here is the full structured answer for Case №1:
Case №1 Analysis — 42-year-old woman with right lumbar pain, fever, dysuria
1. Named Symptoms and Syndromes
Key Symptoms:
| Symptom | Clinical Significance |
|---|---|
| Right lumbar (flank) pain — aching, non-radiating | Suggests upper urinary tract involvement (kidney/pelvis) |
| Fever up to 38.2°C, chills | Systemic inflammatory/infectious response |
| Dysuria (frequent and painful urination) | Lower urinary tract irritation |
| Weakness | General intoxication syndrome |
| Slight eyelid edema | Possible early nephrotic component or inflammatory edema |
| Positive costovertebral angle (CVA) beating symptom on the right (Пастернацького / Pasternatsky sign) | Pathognomonic for renal parenchymal inflammation |
| Abdominal tenderness on the right in the kidney projection | Local peritoneal/renal irritation |
Named Syndromes:
- Pain syndrome — right-sided lumbar/flank pain, non-radiating
- Intoxication syndrome — fever, chills, weakness, tachycardia (HR 96/min)
- Dysuria syndrome — frequent, painful urination
- Edematous syndrome (mild) — slight puffiness of the eyelids
2. Named Risk Factors
| Risk Factor | Explanation |
|---|---|
| Female sex | Short urethra facilitates ascending infection |
| History of urinary changes during pregnancies + prior antibiotic use | Suggests recurrent/previous UTI; pregnancy-associated bacteriuria is a known precursor to pyelonephritis |
| Frequent hypothermia at work | Cold exposure → local immune suppression, impaired circulation |
| Occupation (market seller) | Poor access to toileting, prolonged standing, irregular fluid intake |
| Self-treatment with paracetamol | Masked fever; delayed diagnosis and treatment |
| Warming the lower back | Contraindicated in infectious process; may worsen spread |
3. Preliminary Diagnosis
Acute right-sided pyelonephritis, uncomplicated
Justification:
- Flank pain + positive CVA tenderness (Pasternatsky sign) on the right → upper urinary tract
- Fever (38.2°C) + chills + tachycardia → systemic bacterial invasion (bacteremia in 10–30% of pyelonephritis cases)
- Dysuria + frequent urination → concurrent lower urinary tract involvement (common in pyelonephritis)
- History of urinary changes in pregnancy + recurrent hypothermia → predisposition to ascending infection
- Absence of radiating pain rules out ureteral colic/calculus (though this must be excluded)
- Slight eyelid edema → early involvement of renal filtration function
According to Tintinalli's Emergency Medicine: "Flank pain, costovertebral angle tenderness, or specific renal tenderness to deep palpation... especially in association with fever, chills, nausea, vomiting, or prostration — the clinical diagnosis is acute pyelonephritis."
Goldman-Cecil Medicine notes: "The typical flank pain and tenderness result from inflammation and edema of the renal parenchyma; fever may be masked by intake of analgesics such as acetaminophen" — exactly as seen in this patient.
4. Survey (Investigation) Plan
Mandatory Workup:
Urine:
- General urinalysis — pyuria (leukocyturia ≥10 WBC/hpf), bacteriuria, hematuria, casts (leukocyte/granular), proteinuria
- Urine culture + antibiotic sensitivity (midstream clean-catch) — to identify pathogen (E. coli most common, ~75–85%)
- Urine microscopy
- Nechiporenko test (quantitative leukocyte count per mL)
Blood:
- CBC — leukocytosis with left shift (neutrophilia), elevated ESR
- CRP, procalcitonin — markers of bacterial infection and severity
- Blood urea nitrogen (BUN), serum creatinine — assess renal function
- Blood cultures × 2 — rule out bacteremia/urosepsis (occurs in 10–30% of pyelonephritis)
- Glucose — rule out diabetes mellitus as complicating factor
Imaging:
- Ultrasound of kidneys and bladder — assess kidney size, echogenicity, rule out obstruction, abscess, calculi, hydronephrosis
- Plain abdominal X-ray (KUB) — rule out radiopaque stones
- CT scan of abdomen/pelvis (if no improvement in 48–72 hrs) — rule out perinephric abscess, obstruction
Gynecological:
- Pelvic exam + vaginal swab — rule out cervicitis, PID, or sexually transmitted infection as alternative/concurrent diagnosis
Sources:
- Tintinalli's Emergency Medicine: A Comprehensive Study Guide, Pyelonephritis section
- Goldman-Cecil Medicine, Clinical Manifestations of UTI/Pyelonephritis
Treatment
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Here is a complete treatment plan for this patient with acute right-sided pyelonephritis:
Treatment Plan — Acute Pyelonephritis
Step 1: Hospitalization Decision
This patient has moderate severity (T° 38.2°C, chills, tachycardia HR 96, positive CVA tenderness, eyelid edema) and meets criteria for hospitalization:
- Systemic signs (fever + chills)
- Risk of bacteremia (occurs in 10–40% of pyelonephritis)
- Cannot reliably rule out sepsis at presentation
- Prior history of urinary changes + paracetamol masking fever
Healthy females tolerating fluids with uncomplicated pyelonephritis may be managed as outpatients. However, patients with systemic signs, inability to tolerate oral intake, or concern for sepsis require inpatient IV antibiotics.
Step 2: General (Non-Pharmacological) Measures
| Measure | Rationale |
|---|---|
| Bed rest | During febrile period |
| IV fluid resuscitation (0.9% NaCl or Ringer's lactate) | Replace losses from sweating/vomiting; maintain adequate renal perfusion and urine output ≥1 mL/kg/hr |
| Increased oral fluid intake (after tolerating) | Flushes bacteria from urinary tract; target >2 L/day |
| Frequent voiding | Reduces bacterial tissue contact time |
| Antipyretics — Paracetamol 500–1000 mg PO/IV q6h | Fever and pain control (note: already used by patient) |
| Antiemetics (if nausea present) — Metoclopramide or Ondansetron | Allow oral intake and medications |
| Avoid NSAIDs (if renal function impaired) | May worsen renal perfusion |
| Avoid warming the back | Counterproductive — worsens infection spread |
Step 3: Antibiotic Therapy
Empiric IV Therapy (initial, while cultures pending):
| Drug | Dose | Frequency |
|---|---|---|
| Ceftriaxone (1st choice — 3rd gen cephalosporin) | 1–2 g IV | Once daily |
| OR Cefotaxime | 1–2 g IV | Every 8 hours |
| OR Ampicillin/Sulbactam | 1.5–3 g IV | Every 6–8 hours |
| OR Ciprofloxacin IV (if fluoroquinolone susceptibility confirmed locally) | 400 mg IV | Every 12 hours |
| OR Gentamicin (aminoglycoside — monitor renal function) | 3–5 mg/kg/day IV | Once daily |
Nitrofurantoin is contraindicated — it does not penetrate renal parenchyma and is ineffective for pyelonephritis.
Step-Down to Oral (once afebrile ≥24–48 hrs, tolerating oral intake):
| Drug | Dose | Duration |
|---|---|---|
| Ciprofloxacin | 500 mg PO | Every 12 hours |
| OR Levofloxacin | 750 mg PO | Once daily |
| OR Trimethoprim/Sulfamethoxazole (TMP-SMX) | 960 mg PO | Every 12 hours (only if susceptibility confirmed) |
| OR Cephalexin / Cefixime | 500 mg / 400 mg PO | Every 12 hours |
Total Duration of Antibiotic Therapy:
- 7–14 days total (IV + oral combined) for uncomplicated acute pyelonephritis
- Guided by culture and sensitivity results once available
- For sepsis syndrome: up to 21 days
Step 4: Monitor Response
| Parameter | Target/Action |
|---|---|
| Temperature | Should normalize within 48–72 hours of appropriate antibiotics |
| Fever persisting >72 hours | Urgent imaging (CT abdomen/pelvis) to rule out perinephric abscess, obstruction, or emphysematous pyelonephritis |
| Urine culture results | Adjust antibiotic to narrowest effective agent (de-escalation) |
| Blood cultures | Adjust therapy if bacteremic |
| Renal function (creatinine, BUN) | Monitor during aminoglycoside use; reassess daily |
| CBC, CRP | Track inflammatory response decline |
Step 5: Complications to Watch For
| Complication | Sign |
|---|---|
| Perinephric abscess | Fever >72 hrs despite antibiotics; CT scan required |
| Renal papillary necrosis | Hematuria, worsening renal function |
| Urosepsis / septic shock | Hypotension, altered mental status, oliguria |
| Emphysematous pyelonephritis | Gas in renal tissue on CT; surgical emergency |
Step 6: Discharge Criteria & Follow-Up
- Afebrile for ≥24–48 hours
- Tolerating oral antibiotics
- Normal/improving renal function
- No signs of sepsis
At discharge:
- Complete full oral antibiotic course (total 7–14 days from start)
- Urine culture 5–7 days after completing therapy (test of cure)
- Urology/nephrology referral if recurrent pyelonephritis
- Address risk factors: warmth at work, fluid intake, hygiene
Sources:
- Schwartz's Principles of Surgery, 11th ed. — Pyelonephritis chapter
- Tintinalli's Emergency Medicine — UTI Treatment tables (Tables 91-5, 91-6), Disposition & Follow-Up
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