volume expander


Also found in: Medical.

volume expander

[′väl·yəm ik‚span·dər]
(engineering acoustics)
An audio-frequency control circuit sometimes used to increase the volume range of a radio program or recording by making weak sounds weaker and loud sounds louder; the expander counteracts volume compression at the transmitter or recording studio. Also known as automatic volume expander.
References in periodicals archive ?
Because Albumin is not meant for daily volume therapy, only gelatins are available as volume expander or plasma alternative.
We used a special fluid called a plasma volume expander to help to support her circulation and I took a blood sample from her.
Hextend (6% Hetastarch in Lactated Electrolyte Injection) is BioTime's commercially-available blood plasma volume expander used to treat hypovolemia (low blood volume).
She denied having done so in evidence, insisting she thought it was either saline solution or Gelofusine, a blood volume expander to boost blood pressure.
"There is no justification for the use of FFP as a volume expander. Safer alternative therapy exists."
Tenders are invited for Liquid Plasma Volume Expander
Tenders are invited for Iv Plasma Volume Expander Degraded Gelatin 500 Ml
Tenders are invited for Liquid Plasma Volume Expander Contains 3.5Gm Degraded Gelatine With Electrolyte 500Ml Low Molecular Weight Plasma Expander In 500Ml Bottle
Hydroxyethyl starch 6%Hydroxyethyl starch 130/ 04, 6%saline solutionPlasma Volume Expander IV1) 6% Hydroxy Ethyl Starch2) Low mean molecular wt.From1,00,000- 1,50,000 daltons3) High dose flexibility up to50mls/ kg.b.w./day4) Minimal interference incoagulationMechanism, grouping crossmatching.5) Low risk of anaphylaxis6) Bottle of 500ml.
They are given by infusion (drip) into a vein and are used as blood volume expanders to prevent shock following acute bleeding.