Initial Management of Palpitations

Initial Assessment

The American College of Cardiology recommends obtaining a detailed symptom characterization including frequency, duration, onset/offset patterns, and associated symptoms such as dizziness, chest pain, or syncope for patients complaining of palpitations 1, 2
Assess for precipitating factors such as caffeine, alcohol, exercise, stress, or medications in patients with palpitations 2
Evaluate for signs of hemodynamic instability which would require immediate intervention in patients with palpitations 1
Note the timing of symptoms - nocturnal or postprandial palpitations may suggest vagally-mediated arrhythmias, while daytime episodes during activity may indicate adrenergically-mediated arrhythmias 2

Perform a 12-lead ECG during the initial evaluation to identify baseline abnormalities or capture arrhythmias if present during the visit for patients with palpitations 1, 2
Conduct 48-hour ambulatory ECG monitoring for patients with frequent or sustained palpitations 3, 1
Order basic laboratory tests including complete blood count, electrolytes, and thyroid function tests to rule out metabolic causes for patients with palpitations 2

Consider an event recorder or wearable loop recorder for patients with less frequent episodes of palpitations 1
Perform echocardiography to exclude structural heart disease, especially in patients with sustained palpitations or concerning associated symptoms 1, 2
Consider an implantable loop recorder (ILR) for patients with recurrent episodes of unexplained palpitations who are at low risk of sudden cardiac death 3
Exercise ECG testing is particularly useful if palpitations are exercise-induced 2

Palpitations associated with syncope, pre-syncope, or chest pain require more urgent evaluation 1, 2
Classify patients based on hemodynamic stability: asymptomatic, minimal symptoms, presyncope, or syncope 4
Patients with palpitations and syncope require more urgent evaluation including 12-lead ECG, exercise testing, and 48-hour ambulatory ECG monitoring 1

For supraventricular tachycardia (SVT), consider vagal maneuvers, beta-blockers, or referral for catheter ablation 1
For atrial fibrillation, implement appropriate rate control or rhythm control strategies and assess stroke risk 1
For ventricular arrhythmias, provide guideline-directed medical therapy; patients with sustained ventricular tachycardia require hospitalization 1
For patients with vagally-mediated AF, avoid adrenergic blocking drugs or digitalis as they may worsen symptoms 5
For adrenergically-induced AF, beta-blockers are the initial treatment of choice 5

Refer to cardiology/electrophysiology for patients with palpitations associated with severe symptoms such as syncope or dyspnea 1
Consider electrophysiology study for patients with recurrent, troublesome palpitations when non-invasive testing is inconclusive 2
Immediate cardiology referral is necessary if palpitations are associated with syncope, pre-syncope, or chest pain 2

Avoid using calcium channel blockers such as verapamil and diltiazem to terminate wide-QRS-complex tachycardia of unknown origin, especially in patients with myocardial dysfunction 6
Don't overlook the possibility of non-cardiac causes of palpitations such as hyperthyroidism, stimulant use, or anxiety 7

Eliminating stimulants, such as caffeine, alcohol, and cigarettes, is often sufficient to control symptoms before considering pharmacological therapy, as recommended by the American Heart Association 8, 9
Cessation of stimulants is the cornerstone of conservative management, including eliminating caffeine consumption, stopping alcohol intake, and discontinuing cigarette smoking, which can help reduce palpitations in patients 8, 9
Avoiding oral contraceptives in appropriate patients may also contribute to reducing symptoms, as they may exacerbate palpitations in some individuals 8, 9

Liberalizing fluid and salt intake is the preferred initial approach for palpitations associated with postural hypotension and tachycardia, as it can help improve volume expansion and reduce symptoms 8, 9
Using support stockings can also improve venous return and reduce orthostatic symptoms in patients with palpitations 8, 9

Physical inactivity is a predictor of palpitations in men, suggesting that appropriate exercise may be beneficial in reducing symptoms, according to the American College of Cardiology 8, 9
Gradual increase in physical activity may help reduce symptoms in sedentary patients, as recommended by the American Heart Association 8, 9

Depression, poor self-rated health, and anxiety are significant predictors of palpitations, and addressing psychological comorbidities is part of comprehensive conservative management, as suggested by the American Psychiatric Association 8, 9
Recognizing that 45% of patients with panic disorder have mitral valve prolapse, and many patients with palpitations have underlying anxiety or panic attacks, is crucial for proper management 8, 9

Performing continuous or event-activated ambulatory ECG recordings in patients with recurrent palpitations can help correlate symptoms with actual arrhythmias, as recommended by the American College of Cardiology 8, 9
Many patients with palpitations have no arrhythmias on continuous ambulatory ECG recordings at the time of symptoms, highlighting the importance of proper diagnostic evaluation 8, 9