Hydronephrosis medical therapy

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Vindhya BellamKonda, M.B.B.S [2]

Overview

The goal of treatment for hydronephrosis is to restart the free flow of urine from the kidney and decrease the swelling and pressure that builds up and decreases kidney function.The initial care for the patient is aimed at minimizing pain and preventing urinary tract infections. Otherwise, surgical intervention may be required.

Medical Therapy

Mild-moderate hydronephrosis: Hydronephrosis could resolve spontaneously. However, antibiotic prophylaxis is recommended to lower the risk of urinary tract infection.^[1]

In Order to reduce the risk of permanent kidney injury, the blockage of urine may need to be drained if hydronephrosis is severe enough.
The drainage can be done with nephrostomy tube into the kidney.
Consider giving pain medications and antibiotics to be patient before initiating the treatment.

Mild to moderate hydronephrosis

Follow wait-and-see approach for the treatment of mild to moderate hydronephrosis.
Consider treating the patient with antibiotics to prevent infections.

Severe hydronephrosis

Surgery may be the treatment of choice to eliminate the severity of the blockage or even correct the reflux.

Bilateral hydronephrosis

Infants with severe bilateral antenatal hydronephrosis evaluated initially by using ultrasonography.
Infants with severe bilateral hydronephrosis raise the concern of obstruction like
- Ureterocele
- Posterior urethral valves (PUV) defect
Voiding cystourethrography (VCUG) should be performed if hydronephrosis is positive on USG.

Disease Name

1 Stage 1 - Name of stage
- 1.1 Specific Organ system involved 1
  - 1.1.1 Adult
    - Preferred regimen (1): drug name 100 mg PO q12h for 10-21 days (Contraindications/specific instructions)
    - Preferred regimen (2): drug name 500 mg PO q8h for 14-21 days
    - Preferred regimen (3): drug name 500 mg q12h for 14-21 days
    - Alternative regimen (1): drug name 500 mg PO q6h for 7–10 days
    - Alternative regimen (2): drug name 500 mg PO q12h for 14–21 days
    - Alternative regimen (3): drug name 500 mg PO q6h for 14–21 days
  - 1.1.2 Pediatric
    - 1.1.2.1 (Specific population e.g. children < 8 years of age)
      - Preferred regimen (1): drug name 50 mg/kg PO per day q8h (maximum, 500 mg per dose)
      - Preferred regimen (2): drug name 30 mg/kg PO per day in 2 divided doses (maximum, 500 mg per dose)
      - Alternative regimen (1): drug name10 mg/kg PO q6h (maximum, 500 mg per day)
      - Alternative regimen (2): drug name 7.5 mg/kg PO q12h (maximum, 500 mg per dose)
      - Alternative regimen (3): drug name 12.5 mg/kg PO q6h (maximum, 500 mg per dose)
    - 1.1.2.2 (Specific population e.g. 'children < 8 years of age')
      - Preferred regimen (1): drug name 4 mg/kg/day PO q12h（maximum, 100 mg per dose）
      - Alternative regimen (1): drug name 10 mg/kg PO q6h (maximum, 500 mg per day)
      - Alternative regimen (2): drug name 7.5 mg/kg PO q12h (maximum, 500 mg per dose)
      - Alternative regimen (3): drug name 12.5 mg/kg PO q6h (maximum, 500 mg per dose)
- 1.2 Specific Organ system involved 2
  - 1.2.1 Adult
    - Preferred regimen (1): drug name 500 mg PO q8h
  - 1.2.2 Pediatric
    - Preferred regimen (1): drug name 50 mg/kg/day PO q8h (maximum, 500 mg per dose)

2 Stage 2 - Name of stage
- 2.1 Specific Organ system involved 1
  Note (1):
  
  Note (2):
  
  Note (3):
  - 2.1.1 Adult
    - Parenteral regimen
      - Preferred regimen (1): drug name 2 g IV q24h for 14 (14–21) days
      - Alternative regimen (1): drug name 2 g IV q8h for 14 (14–21) days
      - Alternative regimen (2): drug name 18–24 MU/day IV q4h for 14 (14–21) days
    - Oral regimen
      - Preferred regimen (1): drug name 500 mg PO q8h for 14 (14–21) days
      - Preferred regimen (2): drug name 100 mg PO q12h for 14 (14–21) days
      - Preferred regimen (3): drug name 500 mg PO q12h for 14 (14–21) days
      - Alternative regimen (1): drug name 500 mg PO q6h for 7–10 days
      - Alternative regimen (2): drug name 500 mg PO q12h for 14–21 days
      - Alternative regimen (3):drug name 500 mg PO q6h for 14–21 days
  - 2.1.2 Pediatric
    - Parenteral regimen
      - Preferred regimen (1): drug name 50–75 mg/kg IV q24h for 14 (14–21) days (maximum, 2 g)
      - Alternative regimen (1): drug name 150–200 mg/kg/day IV q6–8h for 14 (14–21) days (maximum, 6 g per day)
      - Alternative regimen (2): drug name 200,000–400,000 U/kg/day IV q4h for 14 (14–21) days (maximum, 18–24 million U per day) '(Contraindications/specific instructions)'
    - Oral regimen
      - Preferred regimen (1): drug name 50 mg/kg/day PO q8h for 14 (14–21) days (maximum, 500 mg per dose)
      - Preferred regimen (2): drug name (for children aged ≥ 8 years) 4 mg/kg/day PO q12h for 14 (14–21) days (maximum, 100 mg per dose)
      - Preferred regimen (3): drug name 30 mg/kg/day PO q12h for 14 (14–21) days (maximum, 500 mg per dose)
      - Alternative regimen (1): drug name 10 mg/kg PO q6h 7–10 days (maximum, 500 mg per day)
      - Alternative regimen (2): drug name 7.5 mg/kg PO q12h for 14–21 days (maximum, 500 mg per dose)
      - Alternative regimen (3): drug name 12.5 mg/kg PO q6h for 14–21 days (maximum,500 mg per dose)
- 2.2 'Other Organ system involved 2'
  Note (1):
  
  Note (2):
  
  Note (3):
  - 2.2.1 Adult
    - Parenteral regimen
      - Preferred regimen (1): drug name 2 g IV q24h for 14 (14–21) days
      - Alternative regimen (1): drug name 2 g IV q8h for 14 (14–21) days
      - Alternative regimen (2): drug name 18–24 MU/day IV q4h for 14 (14–21) days
    - Oral regimen
      - Preferred regimen (1): drug name 500 mg PO q8h for 14 (14–21) days
      - Preferred regimen (2): drug name 100 mg PO q12h for 14 (14–21) days
      - Preferred regimen (3): drug name 500 mg PO q12h for 14 (14–21) days
      - Alternative regimen (1): drug name 500 mg PO q6h for 7–10 days
      - Alternative regimen (2): drug name 500 mg PO q12h for 14–21 days
      - Alternative regimen (3):drug name 500 mg PO q6h for 14–21 days
  - 2.2.2 Pediatric
    - Parenteral regimen
      - Preferred regimen (1): drug name 50–75 mg/kg IV q24h for 14 (14–21) days (maximum, 2 g)
      - Alternative regimen (1): drug name 150–200 mg/kg/day IV q6–8h for 14 (14–21) days (maximum, 6 g per day)
      - Alternative regimen (2): drug name 200,000–400,000 U/kg/day IV q4h for 14 (14–21) days (maximum, 18–24 million U per day)
    - Oral regimen
      - Preferred regimen (1): drug name 50 mg/kg/day PO q8h for 14 (14–21) days (maximum, 500 mg per dose)
      - Preferred regimen (2): drug name 4 mg/kg/day PO q12h for 14 (14–21) days (maximum, 100 mg per dose)
      - Preferred regimen (3): drug name 30 mg/kg/day PO q12h for 14 (14–21) days (maximum, 500 mg per dose)
      - Alternative regimen (1): drug name 10 mg/kg PO q6h 7–10 days (maximum, 500 mg per day)
      - Alternative regimen (2): drug name 7.5 mg/kg PO q12h for 14–21 days (maximum, 500 mg per dose)
      - Alternative regimen (3): drug name 12.5 mg/kg PO q6h for 14–21 days (maximum,500 mg per dose)

References

↑ Gharib T, Mohey A, Fathi A, Alhefnawy M, Alazaby H, Eldakhakhny A (July 2018). "Comparative Study between Silodosin and Tamsulosin in Expectant Therapy of Distal Ureteral Stones". Urol. Int.: 1–6. doi:10.1159/000490623. PMID 30025399.

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[pmid30025399-1] Gharib T, Mohey A, Fathi A, Alhefnawy M, Alazaby H, Eldakhakhny A (July 2018). "Comparative Study between Silodosin and Tamsulosin in Expectant Therapy of Distal Ureteral Stones". Urol. Int.: 1–6. doi:10.1159/000490623. PMID 30025399.

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