Drinking cold water and heart palpitations

Cold liquid can create a sudden sensation in the throat or chest and may coincide with a change in breathing or swallowing. Anxiety, dehydration, caffeine, fever, low blood sugar, and some medicines can also make the heartbeat feel more noticeable. Palpitations may occur with conditions such as Atrial Fibrillation, Hyperthyroidism, Anaemia, or Iron Deficiency Anaemia; the sensation alone cannot identify the cause. Heart Failure can cause breathlessness and swelling as well as changes in how the heart feels, so the wider pattern matters.

Stop and sit quietly when the sensation starts. Breathe slowly, note whether the beat feels fast or irregular, and record its duration, what you drank, and any medicines or stimulants used. Sip fluids at a comfortable temperature and avoid extra caffeine or alcohol until the pattern is clear. Do not repeatedly provoke symptoms to test them. Arrange a review if episodes recur, occur without cold drinks, or come with dizziness, fatigue, thirst, or tremor.

Call emergency services for palpitations with chest pain, severe breathlessness, fainting, new weakness, or confusion, or if a very rapid or irregular rhythm does not settle. Seek prompt assessment for episodes that are becoming more frequent, last longer, or occur with faintness. A clinician may check your pulse, blood pressure, an electrocardiogram, and blood tests.

Ask whether the rhythm needs recording, which medicines or supplements could contribute, and whether symptoms suggest dehydration, Hypoglycaemia, or another condition.