Consensus of the Brazilian association of hematology, hemotherapy and cellular therapy on patient blood management: Anemia tolerance mechanisms
Hematol., Transfus. Cell Ther. (Impr.)
; 46(supl.1): 77-82, 2024. tab, graf
Article
en En
|
LILACS-Express
| LILACS
| ID: biblio-1557900
Biblioteca responsable:
BR1.1
ABSTRACT
Abstract Understanding the physiological concepts of oxygen delivery is essential to discern the mechanisms that influence its increase, reduction or maintenance in the body. This text explores the different mechanisms that help maintain oxygen delivery even in the face of reduced hemoglobin levels. Adequate oxygen delivery ensures tissue and metabolic balance, which is crucial to avoid harmful consequences such as metabolic acidosis and cellular dysoxia. The complex interaction between variables such as cardiac output, hemoglobin and heart rate (HR) plays a fundamental role in maintaining oxygen delivery, allowing the body to temporarily adjust to situations of anemia or high metabolic demand. It is important to emphasize that blood transfusions should not be based on fixed values, but rather on individual metabolic needs. Strategies to reduce myocardial consumption and monitor macro and micro hemodynamics help in making rational decisions. Individualizing treatment and considering factors such as blood viscosity in relation to the benefits of transfusion are increasingly relevant to optimize therapy and minimize risks, especially in complex clinical scenarios, such as neurocritical patients and trauma victims.
Texto completo:
1
Bases de datos:
LILACS
País/Región como asunto:
America do sul
/
Brasil
Idioma:
En
Revista:
Hematol., Transfus. Cell Ther. (Impr.)
Asunto de la revista:
Hematologia
/
TransfusÆo de Sangue
Año:
2024
Tipo del documento:
Article
País de afiliación:
Brasil
/
Estados Unidos