As a comparison in the UK there is robust mandatory reporting on "Retained foreign object post procedure" which is a so-called "Never Event" in the most recent publication (April 2024 to September 2024) this occurred 60 times[1] in the NHS in England. For a denominator there are approximately 21 million operation performed in a year by NHS England[2]. So roughly 0.002% of cases have an unintended retained object or roughly 1 in 50,000.
For further reading the Health Services Safety Investigations Body in the UK (like the NTSB but for healthcare incidents is the best worst analogy) looked at retained foreign objects and published in 2024: https://www.hssib.org.uk/patient-safety-investigations/retai...
For further reading the Health Services Safety Investigations Body in the UK (like the NTSB but for healthcare incidents is the best worst analogy) looked at retained foreign objects and published in 2024: https://www.hssib.org.uk/patient-safety-investigations/retai...
[1]: https://www.england.nhs.uk/long-read/provisional-publication... [2]: https://digital.nhs.uk/data-and-information/publications/sta...