Identifying Cases Of Pernicious Anaemia For Offering Baseline/Surveillance Gastroscopies as per BSG Guidance - Service Development In Shropshire (2023)

Type of publication:
Conference abstract

*Rafique H.; *Rugemintwaza J.; *Mostafa W.; *Smith M.;

Gut. Conference: Annual Meeting of the British Society of Gastroenterology, BSG 2023. Liverpool United Kingdom. 72(Supplement 2) (pp A178-A179), 2023. Date of Publication: June 2023.

Introduction Pernicious anaemia (PA) is associated with a higher risk of gastrointestinal malignancies. BSG guidance suggests baseline gastroscopies for individuals aged >=50 years with laboratory evidence of PA, with surveillance offered to those with high-risk chronic atrophic gastritis.1 Shrewsbury and Telford NHS Trust is not currently offering gastroscopies to patients with PA. Our aim was to identify cases of PA suitable for gastroscopies in line with BSG guidance, followed by implementation of pathways for prospective detection of similar future cases. Methods A list of patients who tested positive for intrinsic factor antibodies (IF Ab) or gastric parietal cell (GPC Ab) between 2017-2022 was obtained from the laboratory. Patients aged 50-70y were stratified into groups as follows: Positive IF Ab considered confirmed PA; positive GPC Ab with low B12 levels considered probable PA; positive GPC with historically normal B12 and no anaemia considered unlikely to be PA. Patients who had gastroscopy for any indication in the last 5 years were excluded. Results 50 cases that met the criteria for confirmed or probable PA were deemed suitable for baseline gastroscopy. Pathway for these patients will be agreed with the hospital governance and GP liaison teams and standard letters and information leaflets will be devised. Confirmed cases will be offered gastroscopy, while probable cases will be offered further testing with IF Ab. If diagnosis is confirmed, gastroscopy will be offered, whereas if IF Ab is negative, no further action taken if the B12 deficiency responds to oral supplementation. For prospective detection of future cases, clinical text will be added in all biochemistry reports with low B12 levels prompting clinicians to consider IF Ab testing if PA is possible in clinical context, with referral to gastroenterology for confirmed cases. Cases tested before 2017 who fit the above criteria will be identified. Conclusions The number of confirmed or probable cases of PA in Shropshire is relatively small and sets a realistic target for offering gastroscopies in line with BSG guidance. Similar initiatives across other trusts could identify cases of PA in the respective regions that could be suitable for baseline or surveillance gastroscopies, with prospective detection of future cases leading to better overall management of PA.