When does a fetus have a heartbeat? Timing and more | 合法醫療器材資訊網

2020年6月9日—Theheartofafetusstartsbeatinginthefifthweekofpregnancy,anditmaybedetectableonatransvaginalscan.Learnaboutthetiming, ...

In most cases, an ultrasound can detect the beating of cardiac tissue around weeks five to six. Typically, the heart will form within the next few weeks.

One of the milestones of fetal development is when the heart begins to beat. Usually, it may be possible to see the first visible sign of the embryo, known as the fetal pole, at roughly 5–6 weeks of pregnancy.

Below, we look into the timeline of a fetus developing a heartbeat and describe how and when a healthcare professional can detect it.

Before about week 8[1] of pregnancy, a doctor may refer to the fetus as an embryo.

Cardiac tissue starts to pulse at around 5–6 weeks[2] of pregnancy, registering as a heartbeat on the ultrasound, though the heart has not developed yet. Also, it may be possible[3] to see the first visible sign of the embryo, known as the fetal pole, at this stage.

The heart of a fetus is fully developed by the 10th week[4] of...