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Paroxysmal Supraventricular Tachycardia (PVST) Learning Center

Note: Symptoms may start and stop suddenly, and can last for a few minutes or several hours. A PSVT lasting more than half of the day is considered an incessant PSVT.
Source:ADAM
Date:May 12, 2008
Stress can come from any situation or thought that makes you feel frustrated, angry, or anxious. What is stressful to one person is not necessarily stressful to another. Anxiety is a feeling of apprehension or fear. The source of this uneasiness i...
Source:ADAM
Date:December 15, 2008
Systematic desensitization is a technique used to treat phobias and other extreme or erroneous fears based on principles of behavior modification .
Source:Gale Encyclopedia of Mental Disorders
Anxiety is a bodily response to a perceived threat or danger. It is triggered by a combination of biochemical changes in the body, the patient's personal history and memory, and the social situation. It is important to distinguish between anxiety ...
Source:Gale Encyclopedia of Alternative Medicine
Anxiety is a multisystem response to a perceived threat or danger. It reflects a combination of biochemical changes in the body, the patient's personal history and memory, and the social situation. As far as we know, anxiety is a uniquely human ex...
Source:Gale Encyclopedia of Medicine
Anxiety is a multisystem response to a perceived threat or danger. It reflects a combination of biochemical changes in the body, the patient's personal history and memory , and the social situation at hand. Human anxiety involves an ability to use...
Source:Gale Encyclopedia of Nursing and Allied Health
Anxiety is a condition of persistent and uncontrollable nervousness, stress, and worry that is triggered by anticipation of future events, memories of past events, or ruminations over day-to-day events, both trivial and major, with disproportionat...
Source:Gale Encyclopedia of Children's Health
A condition of persistent nervousness, stress, and worry that is triggered by anticipation of future events, memories of past events, or ruminations about the self Stimulated by real or imagined dangers, anxiety affects people of all ages and soci...
Source:Gale Encyclopedia of Childhood and Adolescence
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. Palpitati...
Source:ADAM
Date:May 1, 2008
A sensation in which a person is aware of an irregular, hard, or rapid heartbeat.
Source:Gale Encyclopedia of Medicine
Dizziness is light-headedness, feeling like you might faint, being unsteady, loss of balance, or vertigo (a feeling that you or the room is spinning or moving. Most causes of dizziness are not serious and either quickly get better on their own or ...
Source:ADAM
Date:May 2, 2009
As a disorder, dizziness is classified into three categories: vertigo, syncope, and nonsyncope nonvertigo. Each category has its own set of symptoms, all related to the sense of balance. In general, syncope is defined by a brief loss of consciousn...
Source:Gale Encyclopedia of Children's Health
As a disorder, dizziness is classified into three categories—vertigo, syncope, and nonsyncope nonvertigo. Each category has a characteristic set of symptoms, all related to the sense of balance. In general, syncope is defined by a brief loss of co...
Source:Gale Encyclopedia of Medicine
Dizziness is a general term that describes sensations of imbalance and unsteadiness, such as vertigo, mild turning, imbalance, and near fainting or fainting. Feelings of dizziness stem from the vestibular system, which includes the brain and the p...
Source:Gale Encyclopedia of Neurological Disorders
Dizziness is classified into three categories—vertigo, syncope, and nonsyncope nonvertigo. Each category has a characteristic set of symptoms, all related to the sense of balance. In general, syncope is defined by a brief loss of consciousness (fa...
Source:Gale Encyclopedia of Alternative Medicine
Fainting is a temporary loss of consciousness due to a drop in blood flow to the brain. The episode is brief (lasting less than a couple of minutes) and is followed by rapid and complete recovery. You may feel light-headed or dizzy before fainting...
Source:ADAM
Date:May 3, 2009
Fainting is a temporary loss of consciousness, weakness of muscles, and inability to stand up, all caused by sudden loss of blood flow to the brain. Fainting is a relatively common symptom caused by a variety of problems relating to changes in blo...
Source:Gale Encyclopedia of Neurological Disorders
Fainting is loss of consciousness caused by a temporary lack of oxygen to the brain. Known by the medical term "syncope," fainting may be preceded by dizziness , nausea, or a feeling of extreme weakness.
Source:Gale Encyclopedia of Medicine
Syncope, or fainting, is a temporary loss of consciousness, usually caused by decreased blood flow to the brain . Syncope is a symptom, rather than a disease itself, and has many causes. The vasovagal faint, which usually occurs in young, otherwis...
Source:Gale Encyclopedia of Nursing and Allied Health
Weakness is a reduction in the strength of one or more muscles.
Source:ADAM
Date:August 8, 2009
Breathing difficulty involves a sensation of difficult or uncomfortable breathing or a feeling of not getting enough air. See also: Difficulty breathing - first aid
Source:ADAM
Date:June 12, 2009
Shortness of breath, or dyspnea, is a feeling of difficult or labored breathing that is out of proportion to the patient's level of physical activity. It is a symptom of a variety of different diseases or disorders and may be either acute or chronic.
Source:Gale Encyclopedia of Medicine
An arrhythmia is a disorder of the heart rate (pulse) or heart rhythm, such as beating too fast (tachycardia), too slow (bradycardia), or irregularly.
Source:ADAM
Date:May 15, 2008
An arrhythmia is an abnormality in the heart's rhythm, or heartbeat pattern. The heartbeat can be too slow, too fast, have extra beats, skip a beat, or otherwise beat irregularly.
Source:Gale Encyclopedia of Medicine
The heart rate, usually measured by checking the arterial pulse or sounds counting the times of the heart beat, is considered one of the vital signs. Vital signs – body temperature, pulse, breathing rate, and blood pressure provide information about the state of health of a person and, if abnormal, offer clues to problems.
Source:Healthline
Date:September 30, 2007
Chest pain is discomfort or pain that you feel anywhere along the front of your body between your neck and upper abdomen.
Source:ADAM
Date:June 1, 2009
Electrical impulses causes the heart to pump. Normally the impulse originates in the right upper chamber of the heart, called the right atrium. The electrical
Source:Healthline
Date:September 30, 2007
The heart rate, usually measured by checking the arterial pulse or sounds counting the times of the heart beat, is considered one of the vital signs. Vital signs – body temperature, pulse, breathing rate, and blood pressure provide information about the state of health of a person and, if abnormal,offer clues to problems.
Source:Healthline
Date:September 30, 2007
Fatigue is a feeling of weariness, tiredness, or lack of energy.
Source:ADAM
Date:August 3, 2009
Fatigue is physical and/or mental exhaustion that can be triggered by stress , medication, overwork, or mental and physical illness or disease.
Source:Gale Encyclopedia of Alternative Medicine
Fatigue may be defined as a subjective state in which one feels tired or exhausted, and in which the capacity for normal work or activity is reduced. There is, however, no commonly accepted definition of fatigue when it is considered in the contex...
Source:Gale Encyclopedia of Neurological Disorders
Fatigue is physical and/or mental exhaustion that can be triggered by stress , medication, overwork, or mental and physical illness or disease.
Source:Gale Encyclopedia of Medicine
Fatigue may be defined as a subjective state in which one feels tired or exhausted, and in which the capacity for normal work or activity is reduced. There is, however, no commonly accepted definition of fatigue when it is considered in the contex...
Source:Gale Encyclopedia of Mental Disorders
Fatigue is a feeling of exhaustion or loss of strength. The duration of fatigue for a patient with cancer has been found to last from one to two times the length of time between diagnosis and completion of treatment, so it is common for fatigue to...
Source:Gale Encyclopedia of Cancer
Feeling lightheaded is a sensation that may precede syncope or fainting. It is usually experienced when in an upright position (standing or sitting). If
Source:Healthline
Date:September 30, 2007
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