Notes for editors. 1  The National Infrastructure Plan has been developed by Infrastructure UK and represents the UKâs first ever infrastructure plan for the UK. The Government announced at the June 2010 Budget that it would publish a National Infrastructure Plan in autumn 2010.
1 By the 22nd day, the heart starts to beat. 2  Your baby's neural tube begins to form. 3  This becomes the brain and spinal cord. 4  By the end of the first month, your baby is about 1/4 inch long.
Although the myocardium begins to contract rhythmically by 3 weeks after conception (from spontaneously depolarizing myocardial pacemaker cells in the embryonic heart) it is first visible on sonography around 6 weeks of gestation. The FHR is then usually around 100 to 120 beats per minute (bpm).lthough in the healthy fetus the heart rate is usually regular, a beat-to-beat variation of approximately 5 to 15 beats per minute can be allowed.