WHY RBC COUNT IS HIGH

Blood cells are constituents of blood, and are categorized into three main types: red blood cells (RBCs), white blood cells (WBCs), and platelets. Each type possesses a distinct function. RBCs, also known as erythrocytes, primarily transport oxygen throughout the body. Hemoglobin, a protein found within RBCs, binds to oxygen molecules and facilitates their transport. Proper RBC count is vital for maintaining optimal health. When the RBC count exceeds normal levels, a condition called erythrocytosis or polycythemia arises.

CAUSES OF HIGH RBC COUNT

The climb in RBC count can be attributed to various factors, both physiological and pathological. Some causes include:

1. PHYSIOLOGICAL CAUSES:

a. HIGH ALTITUDES:

While dwelling at high altitudes, the body encounters lower oxygen levels. To compensate, the body triggers an increase in RBC production to enhance oxygen absorption and transport.

b. INTENSE PHYSICAL ACTIVITY:

Engaging in strenuous physical activities elevates the demand for oxygen by muscles. The body responds by escalating RBC production to meet this demand.

c. DEHYDRATION:

When dehydrated, the body’s fluid volume decreases, resulting in concentrated blood and a falsely elevated RBC count.

2. PATHOLOGICAL CAUSES:

a. POLYCYTHEMIA VERA:

Polycythemia vera is a myeloproliferative neoplasm, implying abnormal growth of bone marrow stem cells. This leads to an overproduction of RBCs, resulting in high levels in the blood.

b. SECONDARY POLYCYTHEMIA:

Secondary polycythemia arises when an underlying medical condition, such as chronic lung disease, congenital heart disease, or certain kidney disorders, causes the body to produce more RBCs in response to specific physiological stress.

c. TUMORS:

Certain tumors release hormones that stimulate the bone marrow to produce an excess of RBCs. This phenomenon is known as paraneoplastic syndrome.

d. MEDICATIONS:

Certain medications, such as corticosteroids, anabolic steroids, and diuretics, can influence RBC production, leading to elevated levels.

SYMPTOMS OF HIGH RBC COUNT

a. HEADACHES AND DIZZINESS:

Increased blood viscosity, a result of high RBC count, can hamper blood flow, causing headaches and dizziness.

b. FATIGUE AND WEAKNESS:

High RBC count can impede blood flow, limiting oxygen delivery to tissues and resulting in fatigue and weakness.

c. SHORTNESS OF BREATH:

Thickened blood due to high RBC count can strain the heart, leading to shortness of breath, especially during exertion.

d. ITCHY SKIN:

Elevated RBC count can trigger histamine release, causing itchy skin, particularly after taking a warm bath or shower.

e. VISION PROBLEMS:

High RBC count can impair blood flow to the eyes, resulting in vision disturbances.

DIAGNOSIS OF HIGH RBC COUNT

a. COMPLETE BLOOD COUNT (CBC):

A CBC test measures various blood components, including RBC count. High levels may indicate polycythemia.

b. ARTERIAL BLOOD GAS TEST:

This test measures blood oxygen levels. Low oxygen levels may signify underlying conditions causing high RBC count.

c. BONE MARROW ASPIRATION AND BIOPSY:

These procedures involve extracting bone marrow samples to assess cellular composition and identify any abnormalities contributing to high RBC count.

TREATMENT FOR HIGH RBC COUNT

a. PHLEBOTOMY:

Also known as bloodletting, phlebotomy involves removing a specific amount of blood to reduce RBC levels.

b. MEDICATIONS:

Medications like hydroxyurea or interferon may be prescribed to lower RBC production.

c. LIFESTYLE MODIFICATIONS:

Staying hydrated, avoiding high altitudes, and quitting smoking can help manage RBC count.

CONCLUSION

High RBC count can result from physiological factors like high altitudes, dehydration, or vigorous exercise, or pathological conditions like polycythemia vera or underlying medical issues. Symptoms include headaches, dizziness, fatigue, shortness of breath, and itchy skin. Diagnosis involves blood tests, bone marrow examination, and arterial blood gas analysis. Treatment options encompass phlebotomy, medications, and lifestyle adjustments. Consulting a healthcare professional is crucial for accurate diagnosis and appropriate management of high RBC count.

FREQUENTLY ASKED QUESTIONS

1. WHAT IS THE NORMAL RBC COUNT RANGE?

For adult males, the normal range is 4.7 to 6.1 million cells per microliter (mcL), while for adult females, it’s 4.2 to 5.4 million cells/mcL.

2. CAN HIGH RBC COUNT BE DANGEROUS?

Yes, high RBC count can thicken the blood, increasing the risk of blood clots, stroke, and heart attack.

3. HOW CAN I LOWER MY RBC COUNT NATURALLY?

Staying hydrated, avoiding high altitudes, quitting smoking, and reducing alcohol intake can help lower RBC count naturally.

4. WHAT ARE SOME HOME REMEDIES FOR HIGH RBC COUNT?

Drinking plenty of fluids, incorporating foods rich in iron and vitamin B12 into your diet, and avoiding excessive caffeine and alcohol consumption may help manage RBC count.

5. WHEN SHOULD I SEE A DOCTOR ABOUT HIGH RBC COUNT?

Consult a healthcare professional if you experience persistent symptoms like headaches, dizziness, fatigue, shortness of breath, or itchy skin, as these may indicate high RBC count.