It is white or almost white amorphous powder, odorless and tasteless.Soluble in hot water, insoluble inethanol。Its aqueous solution is colorless or microstripOpalescenceClear liquid of.
The product is mainly excreted from the body through the kidney, and its excretion rate is related to the molecular weight.After one hour of human bodySmall molecule dextranAbout 30%, 50% and 70% are discharged from urine respectively,24 hoursAfter that, about 60%, 70% and 80% were discharged respectively.
Usage and dosage
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Intravenous drip: 250-500mL each time, or depending on the condition.
2. The speed of injection depends on the condition, such as forHypovolemic shock, infusion should be fast, and pressurized infusion should be carried out when necessary.Inject 20-40mL of medium molecular weight preparations every minute, and 5-15mL of low and small molecular weight preparations every minute. When the blood pressure rises, the invasion can be reduced as appropriate.Small molecular weight preparations can be used for arterial infusion when necessary.
3. When it is used for the first time, the injection speed should be slow and closely observed for 5-10 minutes.It should not be mixed with whole blood transfusion to avoidHemagglutinationAnd aggregation.byBlood volume expander，Can't replaceThe effect of whole blood.Pay attention to regulation during infusionelectrolyteBalance of.
4. Small molecular weight preparations have diuretic effect, which is beneficial to prevent post shockAcute renal failure, but should not be used for seriousnephropathypatient.
5. The dosage should not exceed 1500mL each time. If the dosage is too large, it may causeBleeding tendencyandHypoalbuminemia。Patients with excessive bleeding on the operating surfaceAcute inflammationOfVasculitisPatients should not use too much or low or small molecular weight preparations to avoid increasing blood seepage or expanding inflammation.
