She was taken to a hospital suffering from an irregular heartbeat.

她因心律不齐而被送进医院。

《柯林斯英汉双解大词典》

In some cases, this can produce an irregular heartbeat.

在一些情况下，这会引起心跳不规律。

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Anticoagulants are often prescribed for people who have an irregular heartbeat that can cause blood clots.

抗凝血药通常订明的人谁拥有不规则的心跳，可能会导致血液凝块。

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An irregular heartbeat, known as atrial fibrillation, can also lead to ischaemic stroke.

BBC: Andrew Marr: Why do healthy people have strokes?

Best has been diagnosed with an irregular heartbeat but has now been given the all-clear by doctors in Bordeaux.

BBC: McCall slams Ulster performance

Cardiac ablation therapy to control an irregular heartbeat will no longer be available to most patients at the hospital.

BBC: NEWS | UK | England | Oxfordshire | Trust could axe 600 health posts