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
Family and friends of a woman who helped protect her niece after Manchester Arena terror attack have confirmed she has died in the attack.
His three-year reign as Leeds United owner ended following the announcement his stake in the club has been bought by Andrea Radrizzani.
Sheffield Wednesday boss Carlos Carvalhal has had his contract extended - ending speculation he could leave the club.