An increased or abnormal awareness ...

An increased or abnormal awareness of the heartbeat, palpitations are a often met with symptom in patients presenting to family physicians. Palpitations can be symptomatic of life-threatening cardiac arrhythmias. (1) However, greatest in number palpitations are benign. In individual retrospective study (2) in a family practice setting, there was no difference in the rates of morbidity or mortality among patients with palpitations compared with matched command subjects.

Although there are many possible cardiac etiologies, palpitations can be associated with noncardiac causes as it was as fever, anemia, or put drugs into use, and can occur in anxious on the other hand otherwise normal persons. The differential diagnoses of palpitations are summarized in Table 1

Consensus or evidence-based guidelines for diagnosing and managing palpitations have not been cause to growed However, recent studies of palpitation etiology provide improved evidence that can guide a family physician from one side diagnosis. In a prospective cohort meditation (1) of 190 patients at a university medical center who complained of palpitations and were followed for united year, an etiology was determined in 84 percent of the patients.

Of these patients, 43 percent had palpitations caused by way of cardiac causes (40 percent had an arrhythmia, 3 percent had other cardiac causes), 31 percent had palpitations caused by means of anxiety or panic disorder, 6 percent had palpitations caused by the agency of street drugs or prescription and over-the-counter medications, and 4 percent had palpitations caused according to other noncardiac causes. No specific cause of the palpitations could be identified in 16 percent of the patients. Psychiatric and emotional illnesses as it was as anxiety, panic, and somatization disorders may be underlying vexed questions in many patients. (1)

Although arrhythmias not seldom cause palpitations, most patients with arrhythmias do not actually notice their arrhythmia and are unlikely to report having palpitations. (3)

This article describes the more general presentations of palpitations and a rational approach to patient evaluation, and provides evidence for making decisions about ambulatory monitoring.

Etiology of Palpitations

CARDIAC ARRHYTHMIAS

Palpitations can rise from many arrhythmias, including any bradycardia and tachycardia, premature ventricular and atrial contractions, sick sinus syndrome advanced arteriovenous make steady [i]or[/i] firm or ventricular tachycardia. Episodes of ventricular tachycardia and supraventricular tachycardia may be perceived as palpitations however also can be asymptomatic or lead to elision Palpitations associated with dizziness, near-syncope, or fainting suggest tachyarrhythmia and are potentially more serious.

near patients notice "pounding" or "jumping" palpitations when they are quietly sitting or lying down. This symptom may ensue from premature contractions, especially premature ventricular contractions. Orthostatic intolerance or inadequate cerebral perfusion onward upright posture may result in palpitations, tachycardia, altered mentation, headache, nausea, pre-syncope and, occasionally, fainting Orthostatic intolerance is most universal in women of childbearing age. (4)

ANXIETY OR PANIC DISORDER

The prevalence of panic disorder in patients with palpitations is 15 to 31 percent (156) Panic disorder is diagnosed forward the basis of information in the patient's history and is characterized through recurrent unexpected panic attacks. Panic disorder is more likely to be diagnosed in women of childbearing age because these patients somatize more at short intervals present to emergency departments more frequently and have increased hypochondriacal relate tos about their health. (7) Palpitations are most numerous persistent in persons who have many minor daily irritants and are highly sensitive to bodily sensations. (8)

A screening questionnaire (Figure 1) (9) to help identify patients whose palpitations are more likely to terminate from panic disorder was validated among patients referr for Holter monitoring. A score of more than 21 points upon the questionnaire is 81 percent sensitive and 80 percent specific for panic disorder. To explain it another way, if, overall, 25 percent of patients have panic disorder as the cause of their palpitations, then 57 percent with more than 21 points have panic disorder compared with merely 7 percent of those with 21 or fewer points. (9)

A simpler screening tool for panic disorder, consisting of a single question, also has been disentangleed The question is, "Have you experienced brief periods, for next to the firsts or minutes, of an overwhelming panic or terror that was accompanied according to racing heartbeats, shortness of breath, or dizziness?" (10) The physician must remember that panic disorder and significant arrhythmias are not mutually exclusive, and that cardiac evaluation still may be necessary in patients with suspected panic disorder. In addition, a certain quantity of patients or physicians may find it difficult to determine whether the feeling of anxiety or panic started before or after the palpitations. Therefore, loyal arrhythmic causes must be rul without before the diagnosis of anxiety or panic disorder can be accepted as the cause of the palpitations. (11112)