Initial Management of Palpitations

Immediate Assessment and Risk Stratification

The American College of Cardiology recommends assessing for hemodynamic instability and high-risk features first in patients with palpitations, as these determine whether the patient requires immediate intervention versus outpatient workup 1
Syncope or near-syncope during palpitations mandates hospitalization for monitoring and evaluation, particularly when ventricular arrhythmia is suspected 1
Pre-excitation (delta waves) on resting ECG indicates Wolff-Parkinson-White syndrome and requires immediate electrophysiology referral due to sudden death risk, especially if irregular palpitations suggest atrial fibrillation 1
Wide complex tachycardia of unknown origin requires immediate specialist referral 1
Associated chest pain, dyspnea, or severe symptoms warrant urgent evaluation for structural heart disease 1
Documented sustained ventricular arrhythmias require hospitalization for initiation of antiarrhythmic therapy 1
If the patient is currently tachycardic, determine if they are unstable with severe signs and symptoms, and if unstable, immediate synchronized cardioversion should be performed (with prior sedation in the conscious patient) 2, 3

The European Society of Cardiology recommends obtaining a 12-lead ECG immediately, ideally while the patient is symptomatic to capture the arrhythmia 1
Never rely on automatic ECG interpretation systems, as they are unreliable and commonly suggest incorrect arrhythmia diagnoses 1
Focus on specific high-yield elements in the history and physical examination, such as symptom characteristics, triggers, medication review, family history, and physical examination 1, 4, 5
Thyroid function tests, electrolytes, and complete blood count may be necessary to identify underlying causes of palpitations 5

Ambulatory ECG monitoring is necessary when symptoms are intermittent and correlation between rhythm and symptoms needs to be established, with monitoring duration based on symptom frequency 6, 5
For patients with frequent or sustained palpitations, 48-hour ambulatory ECG monitoring is recommended to identify the likely cause 6
Obtain echocardiography to assess for structural abnormalities, particularly in patients with sustained palpitations or concerning symptoms 1, 5

Caffeine cessation alone is often sufficient to control palpitations in patients with anxiety and negative cardiac workup, and removing all caffeine sources is recommended 1
Address other triggers such as alcohol, nicotine, stimulant medications, and stress/anxiety 1, 4
Instruct patients on Valsalva maneuver and carotid massage (if no carotid bruits), which can help terminate episodes and confirm re-entrant tachycardia 1
Beta-blockers are first-line treatment for symptomatic palpitations, particularly when associated with mild tachyarrhythmias or increased adrenergic symptoms (Class I recommendation) 1, 4
Non-dihydropyridine calcium channel blockers (verapamil, diltiazem) are effective alternatives for patients who cannot tolerate beta-blockers (Class IIa recommendation) 1, 4

Refer immediately for pre-excitation on ECG (Wolff-Parkinson-White syndrome), syncope or severe symptoms during palpitations, wide complex tachycardia of unknown origin, evidence of structural heart disease, documented complex or sustained ventricular arrhythmias, symptoms persisting despite caffeine elimination and beta-blocker therapy, patient desires definitive therapy (catheter ablation) rather than chronic medication, and drug resistance or intolerance in patients with documented arrhythmias 1