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Present state of intentional hemodilution.
Summary
Preoperative intentional hemodilution improves blood flow and oxygenation in normal and ischemic tissues. This technique offers an alternative to donor blood transfusions and effectively treats microcirculatory disorders and ischemic diseases.
Area of Science:
- Physiology
- Transfusion Medicine
Background:
- Preoperative intentional hemodilution involves isovolemic blood exchange with colloid solutions.
- This procedure aims to collect autologous blood while maintaining normal blood volume.
Purpose of the Study:
- To evaluate the physiological mechanisms and therapeutic applications of preoperative intentional hemodilution.
- To explore its role as an alternative to donor blood transfusion and its efficacy in treating ischemic conditions.
Main Methods:
- Induction of hemodilution through isovolemic exchange of whole blood with colloid solutions.
- Monitoring of cardiac output, organ blood flow, and blood fluidity at reduced hematocrits.
Main Results:
- Compensatory increase in cardiac output and organ blood flow due to improved blood fluidity.
- Enhanced oxygenation in normal and ischemic tissues through improved blood redistribution.
- Demonstrated efficacy as an alternative to donor blood transfusion in elective surgery.
Conclusions:
- Intentional hemodilution enhances tissue oxygenation by improving hemorheological properties.
- It is an effective treatment for shock-induced microcirculatory disorders and a valuable hemorheological therapy for ischemic disease.