The future of the Leeds Children's Heart Surgery unit will be debated in Parliament later.
The issue is being raised by Pudsey MP Stuart Andrew. The decision was taken earlier this year to end surgery in Leeds, forcing patients in the region to travel to Newcastle or Liverpool for treatment.
Last week, due to a request from councillors in Lincolnshire concerned about the closure of the Leicester unit, the Health Secretary ordered a review into the decision. The move has been welcomed by campaigners.
More top news
The fighter was aiming to join twin brother Jamie as a world champion but was beaten on points by Rey Vargas
Weekend weather update: Fine start. Becoming wet and windy. Colder next week.
Residents who fear fracking could blight a north Derbyshire village marched through nearby streets today.