Investigation and inquest
The inquest into the death of Doris Mary Ridgwell was opened on 15th March 2017. It was resumed on 19th March 2018 and adjourned until 15th May 2018 when it concluded.
I found the medical cause of death to be:
1a. Large Subdural Haematoma and Intraventricular Bleed
1b. Warfarin Therapy
II. Community Acquired Pneumonia
I determined that Mrs Ridgwell died as a consequence of over-anticoagulation which caused a large subdural haematoma and intraventricular bleed to which she succumbed.
Circumstances of the death
Mrs Ridgwell was admitted to Epsom General Hospital on 25th February 2017 with a 5 day history of knee swelling and pain. Blood tests were ordered, including INR levels. Her INR level was found to be 8.1 but these results were not successfully telephoned through to the ward or noted by the Healthcare Professionals who managed Mrs Ridgwell’s care and she was discharged from the Hospital without any action to counter the high INR. She was admitted to Epsom General Hospital again on 3rd March 2017, having suffered a large subdural haematoma and intraventricular bleed which was not suitable for active treatment. Her INR level on this occasion was 15. The over-anticoagulation was an important causative factor in her bleeds and therefore it is highly likely this contributed to her death.
Coroner’s concerns
- The Trust’s Standard Operating Procedure for Telephoning of Coagulation Results is not sufficiently clear regarding what action should be taken by staff in the Blood Sciences Department to ensure abnormal coagulation results are made known to the treating Healthcare professionals;
- A new Standard Operating Procedure has been prepared, but having had sight of this, I do not believe this clearly outlines for Laboratory staff the steps to be taken in telephoning through abnormal Coagulation Results;
- Abnormal results are not authorised onto the Clinical Manager system to be viewed by Healthcare professionals by Laboratory staff until they have telephoned the results through to the ward, which can potentially cause a delay in these being available on the system;
- The Discharge summaries provided to GPs following discharge from Hospital do not include blood tests results, meaning a potential safeguard to check these results is missed;
Consideration should be given to whether any steps can be taken to address the above concerns.