Match the blood conditions with their effects on blood viscosity: Low RBC count, Anemia, Polycythemia, High RBC count.
Understand the Problem
The question is asking to match various blood conditions with their corresponding effects on blood viscosity and related parameters such as total peripheral resistance (TPR) and mean arterial pressure (MAP). It involves understanding how different levels of red blood cells (RBC count) influence these hemodynamic factors.
Answer
Low RBC count and anemia decrease viscosity; polycythemia and high RBC count increase it.
Low RBC count and anemia are often associated with a decrease in blood viscosity, whereas conditions like polycythemia and a high RBC count lead to increased blood viscosity.
Answer for screen readers
Low RBC count and anemia are often associated with a decrease in blood viscosity, whereas conditions like polycythemia and a high RBC count lead to increased blood viscosity.
More Information
Blood viscosity is determined by the concentration and characteristics of red blood cells. Anemia and low RBC count lead to lower viscosity, making the blood thinner, which may affect oxygen delivery. Conversely, polycythemia and high RBC counts increase viscosity, potentially leading to complications like thrombosis.
Tips
A common mistake is assuming that all deviations from normal RBC counts have the same effect on viscosity. Remember that a high RBC count thickens the blood, while a low count thins it.
Sources
- Physical Properties of Blood and their Relationship to Clinical ... - pmc.ncbi.nlm.nih.gov
- Polycythemia Vera Symptoms - High Red Blood Cell Count - rarediseases.org
- Chapter 10 Blood Terminology - NCBI - ncbi.nlm.nih.gov
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