Anemias and Red Blood Cell Problems

These flashcards cover key concepts related to anemias and red blood cell problems, including definitions, symptoms, causes, and treatments.

What is the main function of red blood cells?

To transport oxygen and carbon dioxide throughout the body.

What are the typical symptoms of anemia?

Pallor, fatigue, weakness, and shortness of breath.

What causes anemia?

Causes include inflammation, neoplasia, chronic disease, iron deficiency, and acute bleeding.

What is polycythemia?

An increase in the number of red blood cells in the bloodstream.

What is the normal hematocrit range for healthy individuals?

Approximately 37% to 47%.

What is the significance of hemoglobin in red blood cells?

Hemoglobin binds and transports oxygen and carbon dioxide.

What type of anemia is commonly associated with iron deficiency?

Microcytic anemia.

What are the clinical manifestations of vitamin B12 deficiency?

Fatigue, weakness, glossitis, and neurological symptoms.

What is the effect of erythropoietin in anemia?

Stimulates the production of red blood cells in response to low oxygen levels.

What dietary sources are high in iron?

Heme iron is found in meat, poultry, and fish; non-heme iron is found in plants.

What are some common treatments for anemia?

Erythropoiesis-stimulating agents, iron supplements, vitamin B12, and folic acid.

What is aplastic anemia?

A primary condition affecting bone marrow stem cells leading to reduced red blood cell production.

What is the meaning of 'hemolytic anemia'?

A condition caused by the premature destruction of red blood cells.

What hematological measurement is used to diagnose anemia?

Hematocrit and hemoglobin levels.

What role does folate play in red blood cell production?

It is essential for DNA synthesis, which is necessary for cell division.

How can chronic blood loss lead to anemia?

It leads to a gradual depletion of red blood cells without sufficient replacement.

What are the potential complications of untreated anemia?

Increased fatigue, cardiac dysfunction, and decreased quality of life.

What factors can impact the absorption of non-heme iron?

Antacids and dietary components can reduce absorption.

What is 'Pica' in relation to iron deficiency?

Craving and consumption of non-food substances.

What is a common cause of secondary polycythemia?

Chronic hypoxia, such as from living at high altitudes.

What happens to blood viscosity in polycythemia?

It increases, which can lead to hypertension and complications.