When to worry about palpitations with atrial fibrillation

Palpitations is a very common presentation of Atrial Fibrillation. The heartbeat can feel irregular, rapid, pounding or fluttering because the upper chambers are not following a steady rhythm. A familiar episode may settle, but a change from your usual pattern can signal that your rhythm or treatment needs assessment.

Note when the episode began, whether it is continuous or intermittent, and whether your pulse feels irregular. Triggers such as illness, alcohol, poor sleep or missed medicines may matter, but do not assume a trigger explains severe symptoms.

Stop exertion, sit somewhere safe and follow the action plan given by your clinician. Take prescribed medicines exactly as directed; do not take an extra dose or change a blood thinner without advice. If the episode is new, lasts longer than your usual episodes, or keeps returning, contact your cardiology or primary-care team promptly.

Call emergency services immediately for chest pressure or pain, severe trouble breathing, collapse, fainting, marked weakness, new confusion, or sudden trouble speaking, seeing or moving one side of the body. These symptoms need urgent assessment regardless of whether the palpitations feel familiar. Do not drive yourself if you feel faint or seriously unwell.

Ask how to record your pulse and episodes, what duration should trigger a call, and whether your current rhythm and stroke-prevention medicines remain suitable. Clarify which missed-dose instructions apply to each prescription.