A three-tiered approach to investigating patient safety incidents in endoscopy: 4-year experience in a teaching hospital

Improving compliance with the duty of candour: 5-year experience within an endoscopy department

BACKGROUND AND AIMS

Duty of candour (DoC) is the requirement for timely and transparent disclosure after significant healthcare-related harm. We describe the experience of DoC following patient safety incidents (PSI) related to endoscopy, and offer reflections on improving compliance across other areas of clinical medicine.

METHODS

PSI notified on an electronic reporting system (DATIX) from January 2015 to June 2021 were identified. Details of the procedure, level of harm and evidence of both verbal and written DoC were collected and analysed.

RESULTS

33 PSI were notified on DATIX. A verbal apology was documented in 23 cases (70%) and a written notification was offered or sent to in 20 (61%). Verbal apologies were timely, while written DoC was delayed. PSI reporting and verbal DoC increased over this period. Patients or families were invited to present questions for investigation in all 20 with written DoC. There were two claims for compensation during this period.

CONCLUSION

DoC remains challenging for clinicians and patient safety teams 8 years after its inception. Improved compliance requires promotion by clinical leaders and high levels of awareness among clinical and nursing staff, a culture of openness and importantly, sustained administrative support to ensure that downstream actions are not overlooked.

A multicenter study on the preoperative prediction of gastric cancer microsatellite instability status based on computed tomography radiomics

PURPOSE

To construct and validate a radiomics feature model based on computed tomography (CT) images and clinical characteristics to predict the microsatellite instability (MSI) status of gastric cancer patients before surgery.

METHODS

We retrospectively collected the upper abdominal or the entire abdominal-enhanced CT scans of 189 gastric cancer patients before surgery. The patients underwent postoperative gastric cancer MSI status testing, and the dates of their radiologic images and clinicopathological data were from January 2015 to August 2021. These 189 patients were divided into a training set (n = 90) and an external validation set (n = 99). The patients were divided by MSI status into the MSI-high (H) arm (30 and 33 patients in the training set and external validation set, respectively) and MSI-low/stable (L/S) arm (60 and 66 patients in the training set and external validation set, respectively). In the training set, the clinical characteristics and tumor radiologic characteristics of the patients were extracted, and the tenfold cross-validation method was used for internal validation of the training set. The external validation set was used to assess its generalized performance. A receiver-operating characteristic (ROC) curve was plotted to assess the model performance, and the area under the curve (AUC) was calculated.

RESULTS

The AUC of the radiomics model in the training set and external validation set was 0.8228 [95% confidence interval (CI) 0.7355-0.9101] and 0.7603 [95% CI 0.6625-0.8581], respectively, showing that the constructed radiomics model exhibited satisfactory generalization capabilities. The accuracy, sensitivity, and specificity of the training dataset were 0.72, 0.63, and 0.77, respectively. The accuracy, sensitivity, and specificity of the external validation dataset were 0.67, 0.79, and 0.60, respectively. Statistical analysis was carried out on the clinical data, and there was statistical significance for the tumor site and age (p < 0.05). MSI-H gastric cancer was mostly seen in the gastric antrum and older patients.

CONCLUSIONS

Radiomics markers based on CT images and clinical characteristics have the potential to be a non-invasive auxiliary diagnostic tool for preoperative assessment of gastric cancer MSI status, and they can aid in clinical decision-making and improve patient outcomes.