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Related Experiment Videos

[Dual-photon bone densitometry in dialyzed patients].

A Jaros1, M Budíková, J Bartek

  • 1III. interní klinika LF UP a FN, Olomouc.

Vnitrni Lekarstvi
|January 14, 2005
PubMed
Summary

Renal osteodystrophy diagnosis involves assessing bone density and turnover. This study found significant bone density reduction in 58% of dialyzed patients, primarily affecting extremities, suggesting long bone diaphysis as a key measurement area.

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TUBULOINTERSTITIAL NEPHRITIS WITH UVEITIS (TINU SYNDROME). A CASE REPORT.

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Area of Science:

  • Nephrology
  • Endocrinology
  • Bone Metabolism

Background:

  • Renal osteodystrophy diagnosis requires evaluating bone mineral content and turnover.
  • Double-energy bone densitometry is accurate for bone mineral assessment.
  • Standardization of skeletal sites for densitometry in renal osteodystrophy is lacking.

Purpose of the Study:

  • To identify representative skeletal areas for bone densitometry in dialyzed patients.
  • To assess the prevalence, severity, and regional distribution of bone demineralization.
  • To correlate bone density with bone turnover markers.

Main Methods:

  • Cross-sectional study of 45 dialyzed patients (24 male, 21 female) with 20-24 months of treatment.
  • Whole-body bone densitometry with regional analysis (trunk, upper/lower extremities).

Related Experiment Videos

  • Assessment of bone turnover using serum intact parathormone levels (low <50 pg/ml, normal 50-200 pg/ml, high >200 pg/ml).

    • Main Results:

    • 58% of patients showed significant bone density reduction (Z-score <-1).
    • Extremities were most affected (92%), particularly lower extremities (69%) and upper extremities (23%).
    • Trunk involvement was less common (8%); these patterns were independent of bone turnover, sex, or age in women.

    Conclusions:

    • The diaphysis of long bones is a representative skeletal site for densitometry in patients undergoing regular dialysis.
    • Bone demineralization is prevalent and predominantly affects peripheral sites in dialyzed patients.
    • Bone turnover markers did not influence the regional pattern of bone density reduction.