What is high blood pressure?
High blood pressure or hypertension is a common condition which usually affect older age people. Blood pressure is the force exerted by the blood on the walls of arteries. When it is too high, it increases the workload of heart and can cause serious damage to arteries. Over time, uncontrolled high blood pressure increases the heart disease, stroke and kidney disease.
Symptoms of hypertension
Hypertension is sometime called a silent killer because it may have no symptoms for years. In fact 20 percent people with hypertension don't know they have high blood pressure. Internally, it can quietly damage heart, lungs, blood vessels, brain and kidney if left untreated. It is the major risk factor of heart attacks and strokes.
Causes of Hypertension
Normal blood pressure reading falls below 120/80mm/Hg
The top number is the systolic blood pressure which is due to the contraction of heart.
The lower number is called diastolic blood pressure and it is the pressure when heart is relaxing and being refilled with blood. In most cases, the underlying cause of hypertension is not known. Occasionally, hypertension may be result of kidney or adrenal gland disease.
Up to age of 45, more men get high blood pressure than women.As the age progresses both sexes are equally affected but at 65 more women have high blood pressure than men. If a family member has high blood pressure, other members have higher risk of developing it. Diabetics have 60% more chances of getting high blood pressure.
Sodium, a major component of salt, can raise blood pressure by causing the body to retain fluid, which leads to a greater burden on the heart.
Up to age of 45, more men get high blood pressure than women.As the age progresses both sexes are equally affected but at 65 more women have high blood pressure than men. If a family member has high blood pressure, other members have higher risk of developing it. Diabetics have 60% more chances of getting high blood pressure.
Sodium, a major component of salt, can raise blood pressure by causing the body to retain fluid, which leads to a greater burden on the heart.
Hypertension and Stress
Stress can have indirect effect on high blood pressure. It may lead to unhealthy habits like smoking, alcohol use, and poor diet which may affect blood pressure levels. Sometimes, it can increase blood pressure at times, but as a cause it is not directly involved.
Weight and hypertension
Heart of people who are overweight is under strain and increases chances of hypertension. Diets to lower hypertension are also aimed at lowering the weight and to cut down calories. Fatty foods and added sugars should be cut down. Fruits, vegetables, lean proteins and fiber should be increased.
Loosing even 10 pounds can have significant impact.
Also say absolute no to alcohol.
What about caffeine
There is no link between development of hypertension and intake of caffeine. Caffeine, sometime may have temporary jittery effect on the mood but, studies have not shown any link between two. So, one or two cups
of caffeine may be taken safely.
Pregnancy and hypertension
Sometimes blood pressure is raised in second half of pregnancy. This is called gestational hypertension. If not treated, it may lead to a condition called preeclampsia. This condition may have serious consequences both on mother and baby's health. It can deprive baby of blood and oxygen supply and can damage brain and kidney of mother.
Usually, after the baby is born, the blood pressure returns to normal.
Medicine and high blood pressure
Cold and flu medicines that contain decongestants are one of several
classes of medication that can cause blood pressure to rise. Others
include NSAID (non steroidal anti inflammatory drugs) pain relievers, steroids, diet pills, birth control pills,
and some antidepressants can raise blood pressure and if some one has blood pressure he should talk to his doctor about taking these medicines.
White coat hypertension
Some nervous people may have a higher reading in doctor's chamber. This is normal, but these people may have higher chances of developing hypertension.
These people should take readings at their home, chart them and share them with their doctor.
Hypertension and children
Hypertension is usually a problem of old age, but some time children may get this problem.
Normal blood pressure for blood pressure varies according to their age, sex and height. Children are at higher risk if they are overweight.
Treatment
Dietary approach
The DASH Diet -- Dietary Approach to Stop Hypertension -- involving eating more fruits, vegetables, whole-grain foods, low-fat dairy, fish, poultry and nuts.
Exercise
Regular exercise could play very important role in controlling hypertension. At least 150 minutes of moderate -intensity exercise per week will have very good effect on hypertension.This could include brisk walking, gardening, bicycling or other aerobic ( in open air) exercises.
Medications
These may include diuretics, ACE inhibitors, beta blockers, calcium channel blockers, The ARBs.
Diuretics
Diuretics, also known as "water pills" induce diuresis which result in loss of excess sodium and water resulting in reducing the load on vascular system. Some diuretics may deplete body potassium which may cause muscle weakness, leg cramps, and fatigue. Some can increase sugar levels in diabetics. Erectile dysfunction may also occur.
ACE inhibitors
Angiotesin II is a substance which narrowing or contraction of blood vessels thus result in increase of blood pressure. ACE inhibitors are substances which reduces body's supply of angiotesin II resulting in dilated and open blood vessels which result in lowering of blood pressure and reduction in effort for heart.
Side effects may include dry cough, skin rash, dizziness and high potassium. Pregnant woman should not take ACE inhibitors.
Beta-blockers
Beta-blockers reduce heart rate so work load on heart is reduced. They are also used to treat arrhythmia - conditions in which heart rate is abnormal. They may be prescribed alone or in combination with other medications. Side effects can include insomnia ( loss of sleep ), dizziness, fatigue, cold extremities (hands and feet) and erectile dysfunction.
Calcium channel blockers
Calcium channel blockers slow the movement of calcium into cells of heart and blood vessels. Since calcium causes stronger contraction of heart, these drugs ease the heart contraction and relax blood vessels which result in lowering of blood. Side effects can cause dizziness, heart palpitations, swelling of ankles, and constipation. Take them with food or milk and avoid grapefruit juice with them.
ARBs
Instead of reducing body's supply of angiotensin II, these drugs block receptors for angiotensin II-- as if they place a shield over a lock. So angiotensin can not bind at receptor site and can not produce it artery tightening effect. ARBs can take few weeks to develop their full effect. Side effects can include dizziness, insomnia, high levels of potassium and muscle cramps. Pregnant woman should not take this medicine.
OTHER MEDICATIONS
They may include alpha blockers, vasodilators, and central agonists. They act by dilating blood vessels. They can cause dizziness, palpitation of heart, headaches or diarrhea. They are used when other medicines are not controlling the blood pressure.