risk group for hypertension

[jkl]

hello
there are three groups of risk factors for hypertesion
classified as group A B AND C
CAN ANY ONE EXPLAIN FOR ME THIS CLASSIFICATION ??
THANKS

[gillabean]

People in risk group A have either a normal blood pressure but in the upper normal limit, or high blood pressure (either stage 1, 2, or 3) without other risk factors, organ damage or clinical cardiovascular disease.

• Those with stage 1 hypertension can first undergo lifestyle modification with frequent blood pressure monitoring. If their target blood pressure is not achieved within one year, drug treatment should then be added.
• Those with stage 2 or 3 hypertension are treated with medication

Most people with hypertension fall into risk group B. They may have a number of risk factors other than diabetes, but do not show evidence of organ damage or clinical cardiovascular disease. Depending on the blood pressure stage and number of risk factors, initial drug treatment may be needed. These individuals should also undergo lifestyle modification.
People in risk group C are most in need of prompt drug therapy. These include those with high or high-normal blood pressure who have clinical evidence of target organ damage or clinical cardiovascular disease and/or diabetes, with or without other risk factors. Lifestyle modification is also important in these individuals.