Dr Kiran Patwardhan has admitted to errors relating to his treatment of three children while he worked at the sick children's hospital (RSHC) in Edinburgh in 2011.
A 15-month-old baby was "close to death" when complications arose during a procedure to remove a breathing tube, the Medical Practitioners Tribunal Service heard.
The consultant previously received a warning after he was found guilty of sexually motivated behaviour when he inappropriately touched a nurse at a Middlesbrough hospital in 2006. He is now facing a possible ban after a panel found his fitness to practise is impaired due to his misconduct.
Chairman Professor Denis McDevitt said: "Your actions in all three incidents put patients at risk. Without your colleagues acting as they did, there could have been serious consequences."
The most serious incident involved a baby who was in hospital suffering from scalds to the face and neck when Dr Patwardhan took over his care.
When he arrived he allowed a junior doctor to attempt to re-insert a breathing tube and when complications arose failed to take control. A colleague managed to rescue the situation.
Meanwhile, nurses raised when Dr Patwardhan bungled the changing of a breathing tube on a five-year-old patient in June 2011 at Stirling Hospital. The child had Batten disease, a neuro-degenerative disorder usually fatal by late teens, and was suffering epileptic seizures.
The doctor admitted mistakes but the panel found his technique was not "poor" as alleged.
In August 2011 Dr Patwardhan, along with a nurse, was transferring a two-week-old baby with heart problems from Edinburgh to Glasgow for an operation.
Minutes after they left the condition of the baby began to deteriorate as the level of oxygen in the blood dropped rapidly.
Dr Patwardhan admitted coming to the wrong conclusion about the cause, a problem with the breathing tube. The hearing was told the nurse was forced to take control of the situation.
The panel heard Dr Patwardhan accepted his mistakes and had been working towards improving his skills. The doctor's senior manager and assistant medical director at the RHSC, Dr Edward Doyle, told the panel Dr Patwardhan would keep his job if allowed to continue practising.
Dr Patwardhan will find out what sanction he faces today.