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Related Experiment Videos

Blood volume during transurethral prostatic resection.

R G Hahn1

  • 1Department of Anaesthesiology, Huddinge University Hospital, Sweden.

Acta Anaesthesiologica Scandinavica
|November 1, 1988
PubMed
Summary
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Fluid absorption during prostate surgery significantly impacts blood volume. Dextran 40 causes a temporary blood volume increase, while acetated Ringer solution leads to a smaller, sustained increase, affecting blood loss compensation.

Area of Science:

  • Urology
  • Anesthesiology
  • Physiology

Background:

  • Transurethral prostatic resections involve significant fluid absorption.
  • Understanding blood volume (BV) dynamics is crucial for patient management during surgery.
  • Intravenous (i.v.) fluid administration and irrigant absorption influence perioperative hemodynamics.

Purpose of the Study:

  • To investigate blood volume (BV) variations during transurethral prostatic resections.
  • To correlate BV changes with the type and volume of i.v. fluids administered.
  • To assess the impact of absorbed irrigant and blood loss on BV.

Main Methods:

  • Studied 61 transurethral prostatic resections.
  • Estimated blood volume (BV) using the haemoglobin dilution method.

Related Experiment Videos

  • Analyzed data based on i.v. fluid type (dextran 40 vs. acetated Ringer solution), volume infused, irrigant absorbed, and blood loss.

    • Main Results:

    • Dextran 40 infusion led to a rapid BV increase (2.7x infused volume in 10 min), with a cumulative factor of 1.3.
    • Acetated Ringer solution resulted in a BV increase of 0.5x infused volume in 10 min, with a cumulative factor of 0.3-0.4.
    • The half-life of absorbed irrigating fluid in circulation was 5-10 minutes.
    • Following blood loss, BV decreased by the full volume of blood lost with dextran 40, but only by 60% with acetated Ringer solution.

    Conclusions:

    • The type of i.v. fluid significantly influences blood volume (BV) changes during transurethral prostatic resections.
    • Dextran 40 causes a more pronounced, albeit transient, expansion of BV compared to acetated Ringer solution.
    • Acetated Ringer solution appears to provide a more sustained volume effect, influencing the body's compensatory response to blood loss.