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Medical scientists are fighting this life-threatening disease and they have gained some success. That is the development of several classes of antihypertensive drugs and definition of “normal" levels of blood pressure that should be maintained to reduce the risk of cardiovascular complications and death.
Is it a great success? Unfortunately not. Pharmaceutical treatment can not reverse the disease. The patient with developed arterial hypertension can only hope to reduce the risk of high blood pressure complications. How big is this risk reduction? Relative risk reduction is less than 25% during 2-5 years for all major cardiovascular complications. It is higher for stroke (36-45%) and less for heart attacks (10-15%). When all risks are combined, the relative risk reduction is close to 25%.
Be careful and distinguish absolute and relative risk reductions. Papers and pharmaceutical ads always present relative risk reduction which is more impressive. They even do not mention that it is “relative". That is because the absolute risk reduction could be as much as 0.2-2.0%. Does not impress you, right? Let’s take a clinical trial where 0.6% and 0.96% of patients had had fatal stroke in the treatment group and placebo group accordingly. Absolute risk reduction will be 0.96% - 0.60% = 0.36%, however relative risk reduction will be as much as (0.96% - 0.6%)/0.96% = 37.5%! Looks much better! Absolute risk reduction 0.36% means that from one thousand patients taking medication during 3-5 years, three or four could be saved from fatal stroke. Clinical trials don’t say what will happen with those saved patients after 5 years. Presumably, the risk is postponed towards after 5 years period. Clinical trials also do not say which particular patients will be saved. It is like lottery, it could happen that 4 saved patients is just a difference between 44 saved and 40 preliminary died due to pharmaceutical side effects. Vioxx, Celebrex, Baycol are the known examples.
As you see everyone has to pay for this risk reduction not only by inconvenience and cost of pharmaceuticals, but also by the risk of unpleasant or life-threatening side effects. For the patients with high estimated risk (more than 10% during 5 years or more than 20% during 10 years) this price is considered to be a worth-while to pay.
Estimated risk is calculated by doctor. Taking the patient’s age and blood pressure level, plus the presence of risk factors, such as smoking, diabetes, high cholesterol, obesity, atherosclerosis and renal dysfunction, doctor can say that the risk for the cardiovascular complications of high blood pressure during 5, 10 or 20 years will be certain amount of chances For example, smoking woman, aged below 65, with abdominal obesity (waist more than 102cm) and blood pressure 140-179/90-109 mm Hg will have 15-20% absolute risk of all cardiovascular events at 10 years. Just add one more risk factor (diabetes or high cholesterol) and the risk goes up to 30%. This is high risk and the treatment is definitely required.
For the patients with initial stages of hypertension and low risk the balance between benefits and drawbacks of antihypertensive drugs is not established. There are three reasons for being reluctant to start taking antihypertensive drugs without having 10% estimated risk of cardiovascular complications.
Reason one: absolute risk reduction from, let’s say, 7 % to 5 % does not look sufficient to justify long-term expensive, unsafe and inconvenient treatment.
Reason two: even if we decide to operate the relative instead of absolute risk reduction, we CAN NOT do this, because available clinical trials have demonstrated risk reduction for the high risk patients and we can not extrapolate these results to the low risk patients. Clinical trials on low risk patients were not performed and we do not know if the harm of the treatment overbalances the benefit.
Reason three: negative side effects of antihypertensives are well known and include metabolic, lipid and hormonal disturbances including development of diabetes. We know that for the high risk patients (read - low life expectancy) the danger from the drug treatment is less than the benefit, but we do not know and we can not know without 20-30 years studies if it is the case for the low risk patients.
That is why official guidelines do not recommend starting drug treatment at the early stage of hypertension. Modern pharmaceutical treatment can not prevent or reverse the disease; it needs to be taken for life-long to maintain blood pressure at the recommended level.
What about non-pharmaceutical treatment?
The treatment guidelines include the following non-pharmaceutical recommendations.
These non-pharmaceutical approaches have a proven efficacy in the reduction and prevention of high blood pressure. But they require substantial perseverance and will-power to comply with.
You should know how much effort is required to follow dietary restrictions or to stop smoking recommendations. Low compliance with these recommendations is usually accompanied by low compliance with drug therapy.
For people who want to be healthy and prevent or at least control this dangerous disease, there is a good news. Non-pharmaceutical recommendations really work; you will definitely reduce your risk by following them.
But people want more. People want the treatment that can effectively reverse the disease. The way to success here is in the proper coping with stresses. Stress causes activation of sympathetic system. Chronic activation of sympathetic system causes hypertension and obesity. Four out of six classes of antihypertensive drugs are designed to act upon sympathetic system.
Can we manage stress and accompanied sympathetic activation without drugs? The task is not easy. You may say that effective stress reduction is only possible after radical change of working or family environment. I may add that even after that, the man will be caught by the new stress. The problem is in people’s attitude and the ability to cope with stress and to avoid chronic anger. Those who are able, live more than hundred years. The researches on centenarians have demonstrated their unique ability to avoid damaging reactions on the stressful situations.
To select most effective stress-management technique for yourself, I recommend you to try first those having proven blood pressure reducing effect, like yoga, meditation and computerized devices reducing respiration rate. Coping with stress is the obvious way to escape from Number One Killer and to live the full life span we are designed for.
Summary.
Five secrets you should know about pharmaceutical and non-pharmaceutical treatment of the high blood pressure:
High blood pressure causes major health problems for many people around the world and work goes on all the time to improve the monitoring and control of blood pressure in patients who have the condition. A new study has shown that pharmacists may be very good at keeping an eye on the BP levels in groups of selected patients. A new bit of internet software and a secure Web interface helped control BP in a group of about three thousand American patients.
Those with high BP are at risk of stroke or heart attack if the problem is not brought under better control. Both stroke and heart attack can lead to either early death or a severe deterioration in the quality of life. Smoking, diabetes and a high cholesterol level are also commonly found in those people with high BP and the combination of these factors is extremely dangerous if not dealt with properly.
Many people with hypertension / high BP need to take medication on a daily basis. Sometimes just one tablet a day is enough but in many cases it needs a combination of BP tablets and some medication to lower the cholesterol level too. All of this can result in side effects due to the interactions of the BP drugs with each other and with any other medication that the patient is taking. Almost all of those who take regular blood pressure medications will experience drug related side effects of one sort or another. Common side effects are fatigue, cough and - in men - problems with a loss of sex drive and a loss of sexual arousal due to the BP meds.
Hypertension (the other name for high blood pressure) is often poorly controlled and BP levels often run high even in those who are on medication every day. Research done previously has shown benefit by adding input from a nurse or pharmacist into the patients care pathway.
The research used a home BP monitor with the results supervised by a pharmacist - the patients fed their results into a secure web based form and the pharmacist reviewed the readings and worked closely with each patient. The group studied were all adults between 25 and 75 - all had poorly controlled hypertension but were otherwise well.
The patients were divided randomly into three groups: group one had their usual care; group two had home BP monitoring and secure patient Web services training only but no pharmacist input and group three had the full package of home BP monitoring and Web training plus pharmacist care management delivered through Web communications.
The results showed that there was no real difference in BP readings in the two groups who did not have a pharmacist looking after them - both groups saw no real change in their BP control. But the group with the pharmacy input saw much better results. Fifty percent of the patients developed readings that were normal when they had previously been high all the time.
It looks like Web-based pharmacy care of people with hypertension is feasible and can improve BP control and I suspect we may see a lot more of this kind of thing in the future.