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Ultrasonically continuously guided renal biopsy.

B Branger, R Oules, J P Balducchi

    Uremia Investigation
    |January 1, 1985
    PubMed
    Summary
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    Continuous ultrasonic guidance for renal needle biopsy (USRNB) significantly improves tissue sample quality and reduces complications compared to blind biopsy. This advanced technique offers better patient and physician comfort and broader applicability in kidney biopsies.

    Area of Science:

    • Nephrology
    • Medical Imaging
    • Surgical Procedures

    Background:

    • Renal needle biopsy is crucial for diagnosing kidney diseases.
    • Conventional blind biopsy techniques can be limited by lower sample yield and potential complications.
    • Continuous ultrasonic guidance offers enhanced visualization during biopsy procedures.

    Purpose of the Study:

    • To compare the efficacy and safety of continuous ultrasonic-guided renal needle biopsy (USRNB) versus conventional blind biopsy.
    • To evaluate the quality of tissue samples obtained by both methods.
    • To assess patient and physician comfort and technical limitations.

    Main Methods:

    • A prospective study comparing USRNB with a blind technique in 32 nonselected patients.
    • Continuous ultrasonic guidance was used to direct the needle to the lower pole of the kidney.

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  • Tissue samples were analyzed for the number of glomeruli obtained and procedural complications.

    • Main Results:

    • USRNB yielded adequate tissue samples (≥10 glomeruli) in 87% of patients with an average of 2.8 punctures.
    • The blind technique achieved adequate samples in only 56% of patients with an average of 4.0 punctures (p < 0.05).
    • USRNB demonstrated reduced morbidity, improved tissue quality, and enhanced comfort.

    Conclusions:

    • Continuous ultrasonic guidance is a superior method for renal needle biopsy compared to the blind technique.
    • USRNB offers significant advantages in terms of diagnostic yield, safety, and patient experience.
    • This technique expands the indications for renal biopsy, particularly in challenging cases like obesity or small kidneys.