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[An unexpected bottleneck].

F Dazzi1, M Aloisi, F P Ferrandello

  • 1U.O. Nefrologia e Dialisi, Azienda U.S.L 12 di Viareggio, Ospedale Versilia, Lido di Camaiore (LU) - Italia.

Giornale Italiano Di Nefrologia : Organo Ufficiale Della Societa Italiana Di Nefrologia
|November 18, 2004
PubMed
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An unexpected subclavian venous stenosis caused arm edema in an uremic patient post-AV fistula creation. This case questions the utility of indirect ultrasound flow meter evaluation for central venous steno-occlusions.

Area of Science:

  • Nephrology
  • Vascular Surgery
  • Radiology

Background:

  • Arteriovenous (AV) fistula creation is a common procedure for hemodialysis access in uremic patients.
  • Post-operative arm edema can occur, but central venous stenosis is an uncommon cause.
  • Accurate diagnosis of central venous pathologies is crucial for effective patient management.

Observation:

  • A uremic female patient developed significant left arm edema after AV fistula creation.
  • Initial diagnostic work-up, including ultrasound color-Doppler, did not identify the cause.
  • The patient was unexpectedly diagnosed with subclavian venous stenosis.

Findings:

  • Subclavian venous stenosis was the underlying cause of the patient's arm edema.
  • Standard ultrasound color-Doppler assessment of flow meters proved insufficient in detecting the central venous stenosis.

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  • The stenosis was identified through further, unspecified diagnostic procedures.

    • Implications:

    • This case highlights the limitations of indirect ultrasound evaluation for diagnosing central venous steno-occlusive disease.
    • Re-evaluation of diagnostic algorithms for central venous pathologies post-AV fistula is warranted.
    • Clinicians should maintain a high index of suspicion for central venous stenosis even with initially negative work-ups.