Riyadh
Saudi Arabia · 1 retained evidence mentions
Source-grounded findings
Supporting evidence
| Type | Entity | Source evidence | Confidence | Extractor |
|---|---|---|---|---|
| population | Saudi Arabia, Riyadh | “Frequency of Alloimmunization in Patients on Regular Blood Transfusion in Riyadh, Saudi Arabia: A Multicenter Retrospective Study. Methods: This retrospective cohort study, conducted at King Saud Medical City (KSMC) and King Fahad Medical City (KFMC) between 2018 and 2022, evaluated the frequency and risk factors of alloimmunization among 144 transfusion-dependent patients in Riyadh, Saudi Arabia. Conclusions: Given that alloimmunization rates in Riyadh are moderately high-particularly among females and specific blood groups-and that the antibody profile (anti-E, anti-K, anti-C, anti-D) mirrors patterns seen in populations with recipient-donor ethnic mismatches, implementing extended blood group phenotyping for at least Rh (C, c, E, e) and Kell antigens prior to the first transfusion, and incorporating these findings into donor selection protocols, is critical to mitigating these risks.” | 0.95 | saudi_context_rules_v1 |