Crews were called to 521 cardiac arrests, which made up 22% of all missions in 2025.
The team also helped hundreds of critically injured people in 362 traffic collisions.
Gloucestershire and Bristol were the busiest areas for the charity.
“We’re getting more requests for assistance from our local land ambulance crews,” said Tim Ross-Smith, GWAAC’s operations officer.
“This could be due to the outreach work our crew are doing, educating land paramedics about when we can add value to patients who are in urgent need of care.”
Rath said the charity, which does not receive government funding, needs the support of local people.
“People can help with volunteering, they can help with fundraising, they can just help with spreading the word about what it is exactly that we do,” she said.