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Waking heart palpitations: When to worry?
23 Sep
Summary
- Sudden awakening can trigger adrenaline release, increasing heart rate.
- Vivid dreams or nightmares may also cause a racing heartbeat.
- Seek medical help if racing heart persists or has other symptoms.
Waking suddenly to a pounding heart is a startling experience that can be unnerving. This phenomenon is often a normal physiological response.
Experts explain that the shift from sleep to wakefulness can trigger the release of stress hormones like adrenaline. This activates the body's 'fight-or-flight' response, temporarily increasing heart rate.
Vivid dreams, nightmares, anxiety, dehydration, and sleep disturbances are also cited as potential causes for a racing heartbeat upon waking. These episodes usually resolve within seconds.
However, a persistent or frequent racing heart, especially if it lasts for several minutes or occurs without an obvious trigger, warrants medical attention. Conditions such as atrial fibrillation could be indicated.
When accompanied by chest pain, shortness of breath, dizziness, or fainting, a racing heartbeat should not be ignored as it may suggest a serious cardiac issue. Doctors may recommend tests like ECG, Holter monitors, or echocardiograms to diagnose the cause.
