Archive · 26 Aug 2026
Minimally Invasive Bypass Surgery Enables Faster Recovery, Study Finds
Doctors tested two ways to perform heart bypass surgery.
One method uses a small cut between the ribs.
The other method opens the breastbone in the usual way.
The study included 170 people with several blocked heart arteries.
People who had the smaller operation recovered physically better after one month.
They also needed fewer blood transfusions and less time using a breathing machine.
After one year, both groups had similar results.
No one in either group died or had a stroke during that year.
This suggests the less invasive method may help people recover faster without worsening longer-term outcomes.
An international randomized trial compared minimally invasive and conventional coronary artery bypass surgery in 170 patients.
Minimally invasive surgery uses an incision between the ribs instead of splitting the breastbone.
After one month, minimally invasive surgery patients reported better physical recovery.
They also needed fewer blood transfusions and less time on mechanical ventilation.
After one year, both groups had similar outcomes, with no deaths or strokes reported.
- Who
- Researchers led by the Ottawa Heart Institute studied 170 patients with multivessel coronary artery disease.
- What
- The randomized MIST trial compared minimally invasive coronary artery bypass surgery with conventional bypass surgery.
- When
- The research was published in The Lancet on August 22; patients were assessed one month and one year after surgery.
- Where
- The patients were treated at seven centers across Canada, Germany, Japan, China, the United States, and India.
- Why
- The study examined whether a less invasive bypass technique could speed recovery without compromising safety or one-year outcomes.
- Study name
- MIST, or the Minimally Invasive versus STernotomy trial
- Participants
- 170 patients with multivessel coronary artery disease
- Treatment sites
- Seven centers across six countries
- Typical grafts
- Patients received a median of three grafts
- Early recovery
- The minimally invasive group reported better physical recovery after one month
- Other early benefits
- The minimally invasive group needed fewer blood transfusions and less mechanical ventilation
- One-year outcomes
- Both groups had similar outcomes, with no deaths or strokes reported