|
| U.S. Brand
Names |
|
| Hespan® |

|
|
| Generic
Available |
|
|
No |

|
|
| Synonyms |
|
|
HES; Hydroxyethyl Starch |

|
|
| Pharmacological Index |
|
|
Plasma Volume Expander, Colloid |

|
|
| Use |
|
|
Blood volume expander used in treatment of shock or impending shock when
blood or blood products are not available; does not have oxygen-carrying
capacity and is not a substitute for blood or plasma |

|
|
| Pregnancy Risk
Factor |
|
|
C |

|
|
| Contraindications |
|
|
Severe bleeding disorders, renal failure with oliguria or anuria, or severe
congestive heart failure |

|
|
| Warnings/Precautions |
|
|
Anaphylactoid reactions have occurred; use with caution in patients with
thrombocytopenia (may interfere with platelet function); large volume may cause
drops in hemoglobin concentrations; use with caution in patients at risk from
overexpansion of blood volume, including the very young or aged patients, those
with congestive heart failure or pulmonary edema; large volumes may interfere
with platelet function and prolong PT and PTT times |

|
|
| Adverse
Reactions |
|
|
<1%: Peripheral edema, heart failure, circulatory overload, fever, chills,
headaches, itching, pruritus, vomiting, bleeding, prolongation of PT, PTT,
clotting time, and bleeding time, myalgia, hypersensitivity |

|
|
| Overdosage/Toxicology |
|
|
Symptoms of overdose include heart failure, nausea, vomiting, circulatory
overload, bleeding
Treatment is supportive |

|
|
| Stability |
|
|
Do not use if crystalline precipitate forms or is turbid deep
brown |

|
|
| Mechanism of
Action |
|
|
Produces plasma volume expansion by virtue of its highly colloidal starch
structure, similar to albumin |

|
|
| Pharmacodynamics/Kinetics |
|
|
Onset of volume expansion: I.V.: Within 30 minutes
Duration: 24-36 hours
Metabolism: Molecules >50,000 daltons require enzymatic degradation by the
reticuloendothelial system or amylases in the blood prior to urinary and fecal
excretion
Elimination: Smaller molecular weight molecules are readily excreted in urine
|

|
|
| Usual Dosage |
|
|
I.V. infusion (requires an infusion pump):
Adults: 500-1000 mL (up to 1500 mL/day) or 20 mL/kg/day (up to 1500 mL/day);
larger volumes (15,000 mL/24 hours) have been used safely in small numbers of
patients
Dosing adjustment in renal impairment: Clcr <10
mL/minute: Initial dose is the same but subsequent doses should be reduced by
20% to 50% of normal |

|
|
| Dental Health: Local
Anesthetic/Vasoconstrictor
Precautions |
|
|
No information available to require special precautions |

|
|
| Dental Health:
Effects on Dental Treatment |
|
|
No effects or complications reported |

|
|
| Patient
Information |
|
|
Report immediately any respiratory difficulty, acute headache, muscle pain,
or abdominal cramping. Pregnancy precautions: Inform prescriber if you
are pregnant. |

|
|
| Nursing
Implications |
|
|
Anaphylactoid reactions can occur, have epinephrine and resuscitative
equipment available |

|
|
| Dosage Forms |
|
|
Infusion, in sodium chloride 0.9%: 6% (500 mL) |

|
|
| References |
|
|
Brutocao D, Bratton SL, Thomas JR, et al,
"Comparison of Hetastarch With Albumin for Postoperative Volume Expansion in Children After Cardiopulmonary Bypass,"
J Cardiothoracic Vasc Anesth, 1996, 10(3):348-51.
|

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