They don't try to save babies before 22 weeks in the US either. That's because they are not viable at that point and it's an exercise in pure cruelty.
Here's an excerpt from a fascinating blog post by a NICU nurse on this subject:
From reading the UK Mail Online article, and more importantly reading the over 600 comments on this topic, it has made me painfully aware of the ignorance, naivete, and anger the public perception is of caring for infant’s at the edge of viability. Nowhere in the world, including the United States( which arguably had the most advanced technologies when it comes to NICU care), is it routine to resuscitate infants below 23 weeks gestation. In the United States, guidelines for initiating resuscitation vary from 23-24 weeks, and 450 to 500 grams. These guidelines vary by state. Contrary to what Ms. Capewells web page states, it is not “government legislation” that dictates whether an infant born before 22 (really 23 weeks) will be resuscitated and admitted to the NICU. It is the physicians and staff at the delivery. If we are called to a delivery for unsure dates between 22-23 weeks, (the NICU team does not attend deliveries between 21-22 weeks) we first counsel the mom on what will happen and give her as much information as possible, regarding outcomes and survivability. Her choices are to do nothing and provide only comfort care, to start resuscitation until the baby “declares” himself, either by improving or decompensating, or request a full blown resuscitation. The physician’s at the delivery will assess the infant and it is ethically and legally appropriate to withhold or stop a resuscitation on such an extremely premature infant based on how the infant presents himself.
~snip~
I have cared for many infants at the edge of viability. It is always emotionally draining. There is no justice to it. The extreme measures involved to keep a 22-23 week infant alive is staggering, and it is ugly. I once had a patient who had an IV placed on the side of her knee due to such poor IV access. When that IV infiltrated, I gently pulled the catheter out, and her entire skin and musculature surrounding the knee came with it, leaving the patella bone exposed. I have seen micro-preemies lose their entire ear due to scalp vein IV’s. I have watched 500 gram infants suffer from pulmonary hemorrhages, literally drowning in their own blood. I have seen their tiny bellies become severely distended and turn black before my very eyes, as their intestines necrose and die off. I have seen their fontanelles bulge and their vital signs plummet as the ventricles surrounding their brains fill with blood. I have seen their skin fall off. I have seen them become overwhelmingly septic as we pump them with high powered antibiotics that threatened to shut down their kidneys, while fighting the infection. I have seen many more extremely premature infants die painful deaths in the NICU, then live.
http://realityrounds.com/2009/09/15/is-letting-a-21-week-premature-baby-die-considered-health-care-rationing/My own babies were born at 33 weeks and 3 days. I would not have tried to save them if they had come before 24 weeks.