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Related Concept Videos

Ultrasonography01:17

Ultrasonography

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Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
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Assessing Blood pressure using a doppler ultrasound01:19

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To obtain accurate blood pressure measurements in clinical settings, especially when traditional methods are insufficient, healthcare professionals utilize the Doppler ultrasound technique. This method uses high-frequency sound waves to detect blood flow within the arteries, which is crucial for patients with conditions that complicate circulatory system assessment.
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  11. Ultrasound Assessment Of The Effect Of Patient Position And Body Shape On Peri-operative Renal Transplant Cortical Resistive Indices And Perfusion.
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  3. Research Domains
  5. Built Environment And Design
  7. Urban And Regional Planning
  9. Urban Informatics
  11. Ultrasound Assessment Of The Effect Of Patient Position And Body Shape On Peri-operative Renal Transplant Cortical Resistive Indices And Perfusion.

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Normothermic Ex Vivo Kidney Perfusion for the Preservation of Kidney Grafts prior to Transplantation
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Normothermic Ex Vivo Kidney Perfusion for the Preservation of Kidney Grafts prior to Transplantation

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Ultrasound assessment of the effect of patient position and body shape on peri-operative renal transplant cortical resistive indices and perfusion.

Linda Thebridge1,2, Charles Fisher2, Vikram Puttaswamy2

  • 1The University of Sydney, Sydney, NSW, Australia.

Ultrasound (Leeds, England)
|March 17, 2025

View abstract on PubMed

Summary
This summary is machine-generated.

Changing patient position improves renal transplant perfusion and ultrasound measurements. The decubitus position is recommended over supine, with abdominal girth being a key assessment factor.

Keywords:
Cortical resistive indiceskidney transplantationpositional changeultrasound

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Area of Science:

  • Nephrology
  • Transplant Surgery
  • Medical Imaging

Background:

  • Kidney perfusion is influenced by various peri-operative factors.
  • Assessing renal transplant perfusion requires understanding these influences.

Purpose of the Study:

  • To evaluate how patient position and body size affect renal transplant perfusion.
  • To identify optimal patient positioning for post-operative assessment.

Main Methods:

  • Studied 123 adult renal transplant recipients.
  • Measured renal artery velocity, renal vein velocity, and cortical resistive indices.
  • Scans were performed in supine, oblique, and decubitus positions on multiple post-operative days.

Main Results:

  • Positional changes significantly improved resistive indices compared to supine positions.
  • Greater improvements were seen in grafts with higher initial resistive indices and renal vein velocities.
  • Abdominal girth changes with position were more strongly associated with resistive index changes than weight or BMI.

    • Conclusions:

    • Patient positional changes enhance peri-operative renal transplant perfusion and ultrasound metrics by reducing compression.
    • Optimal patient positioning, particularly the decubitus position, can improve graft outcomes.
    • Abdominal girth is a more relevant pre-operative assessment metric than weight or BMI for predicting perfusion changes.