Causes of Sudden Drop in Blood Pressure?

Sudden drops in blood pressure can be life-threatening. Causes of this type of hypotension include:

• Loss of blood from bleeding
• Low body temperature
• High body temperature
• Heart muscle disease causing heart failure
• Sepsis, a severe blood infection
• Severe dehydration from vomiting, diarrhea, or fever
• A reaction to medication or alcohol
• A severe allergic reaction, called anaphylaxis

Causes Low Blood Pressure?

Pregnancy

Hormonal problems such as an underactive thyroid (hypothyroidism), overactive thyroid (hyperthyroidism), diabetes, or low blood sugar (hypoglycemia)

Over-the-counter medications

Overdose of high blood pressure drugs

Heart failure

Heart arrhythmias (abnormal heart rhythms)

Widening, or dilation, of the blood vessels

Heat exhaustion or heat stroke

Liver disease

Stress is the Major cause of Heart Diseases

Stress is considered a contributing risk factor for heart disease because little is known about its effects. The effects of emotional stress, behavior habits, and socioeconomic status on the risk of heart disease and heart attack have not been proven. That is because we all deal with stress differently: how much and in what way stress affects us can vary from person to person.

Researchers have identified several reasons why stress may affect the heart.

Stressful situations raise your heart rate and blood pressure, increasing the your heart's need for oxygen. This need for oxygen can bring on angina pectoris, or chest pain, in people who already have heart disease.

During times of stress, the nervous system releases extra hormones (most often adrenaline). These hormones raise blood pressure, which can injure the lining of the arteries. When the arteries heal, the walls may harden or thicken, making is easier for plaque to build up.

Stress also increases the amount of blood clotting factors that circulate in your blood, and makes it more likely that a clot will form. Clots may then block an artery narrowed by plaque and cause a heart attack.
Stress may also contribute to other risk factors. For example, people who are stressed may overeat for comfort, start smoking, or smoke more than they normally would.

Alcohol Effects on Heart

Risk of heart disease in people who drink moderate amounts of alcohol is lower than in nondrinkers. Experts say that moderate intake is an average of one to two drinks per day for men and one drink per day for women. One drink is defined as 1?fluid ounces (fl oz) of 80-proof spirits (such as bourbon, Scotch, vodka, gin, etc.), 1 fl oz of 100-proof spirits, 4 fl oz of wine, or 12 fl oz of beer. But drinking more than a moderate amount of alcohol can cause heart-related problems such as high blood pressure, stroke, irregular heartbeats, and cardiomyopathy (disease of the heart muscle). And the average drink has between 100 and 200 calories. Calories from alcohol often add fat to the body, which may increase the risk of heart disease. It is not recommended that nondrinkers start using alcohol or that drinkers increase the amount that they drink.

It is never too late or too early to begin improving heart health. Some risk factors can be controlled, while others cannot. But, by eliminating risk factors that you can change and by properly managing those that you cannot control, you may greatly reduce your risk of heart disease.

Side Effects of Birth control Pills for Heart

Early types of birth control pills contained high levels of estrogen and progestin, and taking these pills increased the chances of heart disease and stroke, especially in women older than 35 who smoked. But birth control pills today contain much lower doses of hormones. Birth control pills are considered safe for women younger than 35, who do not smoke or have high blood pressure.

But if you smoke or have other risk factors, birth control pills will increase your risk of heart disease and blood clots, especially if you are older than 35. According to the American Heart Association, women who take birth control pills should have yearly check-ups that test blood pressure, triglyceride, and glucose levels.

How I know that my Blood Pressure is low?

Symptoms of dizziness and lightheadedness when you stand up don't necessarily mean that you low blood pressure, also called postural hypotension. A wide range of underlying conditions may cause your symptoms. It's important to identify the cause of low blood pressure so appropriate treatment can be given.
The doctor will look at your medical history, age, specific symptoms, and the conditions under which the symptoms occurred. He or she may perform repeated evaluations of your blood pressure and pulse rate -- after you've been lying down for a few minutes and within a few minutes after you stand quietly.
Other tests may be performed, such as an ECG (electrocardiogram) to measure heart rate and rhythm problems and an echocardiogram (an ultrasound test to visualize the heart). You may also have blood tests to look for anemia or problems with your blood sugar levels.
More sophisticated home ECG monitoring (a Holter monitor or "event" monitor) may be necessary to check for heart problems that occur intermittently.
An exercise stress test or -- less commonly -- an electrophysiology test (EP test) may also be helpful.
Serious forms of postural hypotension may require a test called a "tilt table" test. This test evaluates the body's reaction to position and changes in position. The person lies on a table, is safely strapped in, and the table is raised to an upright position for up to an hour. Blood pressure, heart rate, and symptoms are recorded. Often, medications are given to help guide treatment.

First Aid of Low Blood Pressure

If you have an underlying medical problem that causes low blood pressure, seek treatment for the underlying condition. For many people, chronic low blood pressure can be effectively treated with diet and lifestyle changes.
Initially, you must follow these;

• Eat a diet higher in salt.
• Decrease your intake of caffeine.
• Drink lots of nonalcoholic fluids -- a minimum of eight glasses per day. Sports drinks that are high in sodium and potassium are recommended, especially during exercise or in hot weather.
• Drink more fluids during hot weather and while sick with a viral illness, such as a cold or the flu.
• Have your doctor evaluate your prescription and over-the-counter medications to identify any that may be causing your symptoms.
• Get regular exercise to promote blood flow.
• Be careful when rising from lying down or sitting. To improve circulation, pump your feet and ankles a few times before standing up. Then proceed slowly. When getting out of bed, sit upright on the edge of the bed for a few minutes before standing.
• Elevate the head of your bed at night by placing bricks or blocks under the head of bed.
• Avoid heavy lifting.
• Avoid straining while on the toilet.
• Avoid prolonged exposure to hot water, such as hot showers and spas. If you get dizzy, sit down. It may be helpful to keep a chair or stool in the shower in case you need to sit; to help prevent injury, use a nonslip chair or stool designed for use in showers and bath tubs.
• To avoid problems with low blood pressure and lessen episodes of dizziness after meals, try eating smaller, more frequent meals. Rest after eating. Avoid taking drugs to lower blood pressure before meals.If needed, use elastic support (compression) stockings that cover the calf and thigh. These may help restrict blood flow to the legs, thus keeping more blood in the upper body.

What is High Blood Pressure and How it Measure?

The heart pumps blood into the arteries with enough force to push blood to the far reaches of each organ from the top of the head to the bottom of the feet. Blood pressure can be defined as the pressure of blood on the walls of the arteries as it circulates through the body. Blood pressure is highest as its leaves the heart through the aorta and gradually decreases as it enters smaller and smaller blood vessels (arteries, arterioles, and capillaries). Blood returns in the veins leading to the heart, aided by gravity and muscle contraction.

Hypertension is the medical term for high blood pressure. It is known as the "silent killer" since it has no initial symptoms but can lead to long-term disease and complications..

• Many people have high blood pressure and don't know it.
• Important complications of uncontrolled or poorly treated high blood pressure include heart attack, congestive heart failure, stroke, kidney failure, peripheral artery disease, and aortic aneurysms (weakening of the wall of the aorta, leading to widening or ballooning of the aorta).
• Public awareness of these dangers has increased. High blood pressure has become the second most common reason for medical office visits in the United States.

How is blood pressure measured?
Blood pressure is measured with a blood pressure cuff and recorded as two numbers, for example, 120/80 mm Hg (millimeters of mercury). Blood pressure measurements are usually taken at the upper arm over the brachial artery.

• The top, larger number is called the systolic pressure. This measures the pressure generated when the heart contracts (pumps). It reflects the pressure of the blood against arterial walls.
• The bottom, smaller number is called the diastolic pressure. This reflects the pressure in the arteries while the heart is filling and resting between heartbeats.

The American Heart Association has recommended guidelines to define normal and high blood pressure.

• Normal blood pressure less than 120/80
• Pre-hypertension 120-139/ 80-89
• High blood pressure (stage 1) 140-159/90-99
• High blood pressure (stage 2) higher than 160/100

As many as 60 million Americans have high blood pressure.

• Uncontrolled high blood pressure may be responsible for many cases of death and disability resulting from heart attack, stroke, and kidney failure.
• According to research studies, the risk of dying of a heart attack is directly linked to high blood pressure, particularly systolic hypertension. The higher your blood pressure, the higher the risk. Maintaining lifelong control of hypertension decreases the future risk of complications such as heart attack and stroke.

Best stress-management techniques

Exercise

Physical exercise not only promotes overall fitness, but it helps you to manage emotional stress and tension as well. For one thing, exercise can emotionally remove one temporarily from a stressful environment or situation. Being fit and healthy also increases your ability to deal with stress as it arises.

Relaxation and meditation

There are many ways to use structured relaxation and meditation techniques to help control stress and improve your physical and mental well-being. While some types of meditation and relaxation therapies are best learned in a class, it's also possible to learn meditation techniques on your own. There are literally hundreds of different types of relaxation methods ranging from audio CDs to group martial arts and fitness classes. The following are only examples of the types of structured programs available that can increase our capacity for relaxation:

• Autogenic training: Developed in the early 20th century, this technique is based upon passive concentration and awareness of body sensations. Through repetition of so-called autogenic "formulas" one focuses upon different sensations, such as warmth or heaviness, in different regions of the body. Autogenic training has been used by physicians as a part of therapy for many conditions. Popular in Europe (where it is even covered by some insurance plans), this method is currently gaining acceptance in the United States. No particular physical skills or exercises are involved; however, people desiring to learn this technique must be prepared to invest time and patience. Since this technique is slightly more complex than some relaxation methods, a course is generally the best way to learn the method.
• Biofeedback: Biofeedback is one method of learning to achieve relaxation, control stress responses, or modify the body's reactions through the use of monitoring equipment that provides information from the body which would normally not be available. This method is based upon the principle first advanced in the early 1960s that the autonomic nervous system (the part we don't consciously use) is trainable. For example, instruments can be used to measure heart rate, blood pressure, brain activity, stomach acidity, muscle tension, or other parameters while people experiment with postural changes, breathing techniques, or thinking patterns. By receiving this feedback, one can learn to identify the processes that achieve the desired result, such as reduction in heart rate and blood pressure. Biofeedback is used by many practitioners for a variety of psychological and physical conditions. Because the technique involves the use of measuring devices, it can only be performed by a professional.
• Imagery: Imagery, sometimes referred to as guided imagery, is the use of pleasant or relaxing images to calm the mind and body. By controlling breathing and visualizing a soothing image, a state of deep relaxation can occur. This method can be learned by anyone and is relatively easy to try out.
• Meditation techniques: Ranging from practices associated with specific religions or beliefs to methods focusing purely on physical relaxation, meditation is one of the most popular techniques to achieve physical and mental relaxation. There are thousands of different types of meditation, and many can be learned on your own. The meditative state is one in which there is a deep centering and focusing upon the core of one's being; there is a quieting of the mind, emotions, and body. The meditative state can be achieved through structured (as in a daily practice of a routine) or unstructured (for example, while being alone outdoors) activities. While teachers of meditative arts are readily available, some techniques can be learned though books or online tutorials.
  
  A form of meditation popularized in the last few decades is TM, or transcendental meditation. TM has the goal of achieving transcendental consciousness, or the simplest form of awareness. It is practiced for 15-20 minutes in the mornings and evenings and is relatively easy to learn. Numerous classes and teaching materials are available for beginners.
• Progressive muscle relaxation: Progressive muscle relaxation is a method developed in the 1930s in which muscle groups are tightened and then relaxed in succession. This method is based upon the idea that mental relaxation will be a natural outcome of physical relaxation. Although muscle activity is involved, this technique requires no special skills or conditioning, and it can be learned by almost anyone. Progressive muscle relaxation is generally practiced for 10-20 minutes a day. As with the relaxation response, practice and patience are required for maximum benefits.
• Qigong: The martial art qigong is an ancient Chinese health-care system that combines physical training (such as isometrics, isotonics, and aerobic conditioning) with Eastern philosophy and relaxation techniques. There are many different kinds of qigong, including medical qigong. Some forms are practiced while standing, sitting, or lying down; others involve structured movements or massage. Over 70 million Chinese practice some form of qigong daily. Qigong has been used for centuries in China for the treatment of a variety of medical conditions. Learning qigong involves time, commitment, patience, and determination, and learning from a master or group is advisable. Since this technique involves physical exertion, check with your doctor before beginning, particularly if you have a chronic medical condition or are over 40 years old.  
• Yoga: There are many forms of yoga, an ancient Indian form of exercise based upon the premise that the body and breathing are connected with the mind. The practice of yoga is thought to be over 5,000 years old. One goal of yoga is to restore balance and harmony to the body and emotions through numerous postural and breathing exercises. Yoga, which means "joining" or "union" in Sanskrit, has been called the "search for the soul" and the "union between the individual and the divine." Among the benefits of yoga are increased flexibility and capability for relaxation. No special level of conditioning is required; yoga can be learned by nearly anyone. Classes, books, and videos are widely available. Those with special or chronic physical conditions will want to get clearance from their doctor before beginning.

Stress causes Heart Disease?

Stress itself might be a risk factor, or it could be that high levels of stress make other risk factors (such as high cholesterol or high blood pressure) worse. For example, if you are under stress, your blood pressure goes up, you may overeat, you may exercise less, and you may be more likely to smoke.
If stress itself is a risk factor for heart disease, it could be because chronic stress exposes your body to unhealthy, persistently elevated levels of stress hormones like adrenaline and cortisol. Studies also link stress to changes in the way blood clots, which increases the risk of heart attack.

Does Stress Affect Everyone the Same?

No. People respond in different ways to events and situations. One person may find an event joyful and gratifying, but another person may find the same event miserable and frustrating. Sometimes, people may handle stress in ways that make bad situations worse by reacting with feelings of anger, guilt, fear, hostility, anxiety, and moodiness. Others may face life's challenges with ease.

Can overweight cause Heart Attack

Obesity is associated with more cardiac risk factors than ideal weight individuals. Certainly there are obese people who are physically active and hence obese but fit. The Archives of Internal Medicine published two articles related to obesity and cardiac risk in August 2008. In the first study, 5440 participants in the National Health and Nutrition Examination Surveys (NHANES) provided data on their body mass index (BMI) and their cardiac health. The BMI was used to classify the participants into 3 groups: normal weight, below 25.0; overweight, 25.0-29.9; and obese, 30 or above. The results showed that 23.5% of the normal-weight participants had two or more cardiac risk factors, while 51.3% of the overweight and 31.7% of the obese adults were heart-healthy, i.e., they had none or only one cardiac risk factor. Cardiac risk factors included high blood pressure, elevated blood sugar (diabetes), elevated tricglycerides, low good cholesterol (HDL), and elevated C-reactive protein, a marker of inflammation. The risk of cardiovascular disease correlated more with physical activity and waist size than body mass index.
However, cardiovascular disease is the number one killer of women worldwide. Obesity and lack of physical exercise can lead to high blood pressure, which increases the risk of heart attacks, strokes, and heart failure. It is important to discuss your cardiovascular risk factors, including your family history, with your doctor. Women can dramatically reduce their risk of cardiovascular disease by altering their lifestyle and knowing their numbers, including blood pressure and cholesterol. Every year in your birthday month, it is wise to see your physician to have your blood pressure and fasting lipids (cholesterol) checked, as well as your blood sugar.

What is Angiography or arteriography?

Angiography or arteriography is a medical imaging technique used to visualize the inside, or lumen, of blood vessels and organs of the body, with particular interest in the arteries, veins and the heart chambers. This is traditionally done by injecting a radio-opaque contrast agent into the blood vessel and imaging using X-ray based techniques such as fluoroscopy. The word itself comes from the Greek words angeion, “vessel”, and graphein, “to write or record”. The film or image of the blood vessels is called an angiograph, or more commonly, an angiogram.
The term angiography is strictly defined as based on projectional radiography; however, the term has been applied to newer vascular imaging techniques such as CT angiography and MR angiography. The term isotope angiography has also been used, although this more correctly is referred to as isotope perfusion scanning.