More than 60 people joined a march around the town centre on Saturday following the closure of cardiac rehab care at Danetre Hospital.
The protest, which was led by Viv Crouch, travelled from the hospital and into the town centre.
Mrs Crouch, who helped set up and then ran the cardiac rehab unit and is chairman of the Daventry and District Heart Support Group, said: “It is estimated more than 60 people gathered at Danetre Hospital for the start of the walk, and others joined in as we proceeded around Daventry town centre.
“A huge thank you to all who came to demonstrate their support for this cause, the response was amazing. People offering support included past patients, concerned residents and Daventry district councillors.
“The sole purpose for the protest walk was to highlight the plight for cardiac patients who now have to travel to Kettering or Northampton hospitals for their rehab care.”
The cardiac rehab service was provided at Danetre from April 2005 by Mrs Crouch until her retirement in November 2010. The service was then cut by the Nene Clinical Commissioning Group (CCG) in March this year.
Mrs Crouch said: “We must now focus on the requirements of he people who may suffer the consequences of heart problems in the future.
“People are devastated by the closure and removal of this valuable service which provided guidance and emotional support following a most frightening experience which affects both patient and family.
“The benefit of the service at Danetre was that it is a community based service, taking patients away from the acute setting, this in itself lowers the stress levels. Danetre offers a warm welcome and prompt service, free parking and ease of access to meet the needs of people from Daventry and the surrounding area.
“Travelling to hospitals in Kettering or Northampton is costly; you must have transport, there are parking issues along with the costly parking fees. There is a delay in receiving care due to increased workload since the closure at Danetre.
“We hope Nene CCG will reconsider its position.”