Dehydration does not directly cause tachycardia. Tachycardia, also called tachyarrhythmia, is a common type of heart rhythm disorder in which the heart rate exceeds the normal resting rate. Usually, a resting heart rate over 100 beats per minute is regarded as tachycardia in adults.
It should be noticed that dehydration is often found among people with tachycardia, especially for people who are female, over 60 years old, have high blood pressure and take medication such as Digoxin.
Besides, people with tachycardia may suffer from other symptoms such as breath shortness, chest pain, lightheadedness, rapid pulse rate, nausea, heart palpitations and vomiting. If you have the symptoms of tachycardia, you should consult your doctor for immediate treatments.
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