The incident happened in Bedford last night (February 2) and a Magpas Air Ambulance rapid response vehicle was sent to the indicent.
When the Magpas team arrived, a paramedic crew had successfully resuscitated the patient, in his 70s.
The Magpas medical team then performed a road side surgical procedure, providing the man with enhanced A&E level care, after he went into a second cardiac arrest.
The Magpas doctor and paramedic then accompanied the patient to Bedford Hospital, in a land ambulance, where upon arrival the man was in critical condition.
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A Magpas Air Ambulance spokesperson said: “This incident highlights how we can bring vital hospital level care to seriously ill patients when time is of the essence, 24/7 in the East of England and beyond.”
Bedfordshire police were also in attendance.