Heart Palpitations
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http://www.nlm.nih.gov/medlineplus/ency/article/003081.htm
Palpitations are heartbeat sensations that feel like your heart is pounding or racing. You may simply have an unpleasant awareness of your own heartbeat, or may feel skipped or stopped beats. The heart’s rhythm may be normal or abnormal. Palpitations can be felt in your chest, throat, or neck.
Normally the heart beats 60 – 100 times per minute. In people who exercise routinely or take medications that slow the heart, the rate may drop below 55 beats per minute.
If your heart rate is fast (over 100 beats per minute), this is called tachycardia. A slow heart rate is called bradycardia. An occasional extra heartbeat is known as extrasystole.
Palpitations are usually not serious. However, it depends on whether or not the sensations represent an abnormal heart rhythm ( arrhythmia). The following conditions make you more likely to have an abnormal heart rhythm:
* Known heart disease at the time the palpitations begin
* Significant risk factors for heart disease
* An abnormal heart valve
* An electrolyte abnormality in your blood — for example, a low potassium level
CAUSES
Heart palpitations can be caused by:
* Anemia
* Anxiety, stress, fear
* Caffeine
* Certain medications, including those used to treat thyroid disease, asthma, high blood pressure, or heart problems
* Cocaine
* Diet pills
* Exercise
* Fever
* Hyperventilation
* Low levels of oxygen in your blood
* Heart valve disease, including mitral valve prolapse
* Nicotine
* Overactive thyroid
HOME CARE
Reducing your caffeine intake will often significantly reduce your heart palpitations. Reducing stress and anxiety can help lessen the frequency or intensity of your heart palpitations. Try breathing exercises or deep relaxation (a step-by-step process of tensing and then relaxing every muscle group in your body) when palpitations occur. Practicing yoga or tai chi on a regular basis can reduce the frequency of your palpitations.
Keep a record of how often you have palpitations, when they happen, how long they last, your heart rate at the time of the palpitations, and what you are feeling at the time. This information may help your doctor figure out both their seriousness and their underlying cause.
Once a serious cause has been ruled out by your doctor, try NOT to pay attention to heart palpitations, unless you notice a sudden increase or a change in them.
If you have never had heart palpitations before, bring them to the attention of your health care provider.
When to Contact a Medical Professional
Call 911 if:
* You lose and regain consciousness.
* Someone with you loses consciousness.
* You have shortness of breath, chest pain, unusual sweating, dizziness, or lightheadedness.
Call your doctor right away if:
* You feel frequent extra heartbeats (more than 6 per minute or coming in groups of 3 or more).
* You have risk factors for heart disease, such as high cholesterol, diabetes, or high blood pressure.
* You have new or different heart palpitations.
* Your pulse is more than 100 beats per minute (without exercise, anxiety, or fever).