Ketema, Bizuayehu (2016) Comparison of ABO/RH on Military Identification Cards against Slide and Test Tube Methods at Armed Forces Referral and Teaching Hospital. Masters thesis, Addis Ababa University.
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Abstract
Background- The ABO/Rh type is placed on military identification card (ID card) to simplify transfusion delivery in time of emergency and war time urgency. However, an error rate of 5 to 12% have been reported. The Ethiopian armed forces implement ID tags in all military soldiers. At time of emergencies, transfusion is practiced relying on the ABO/Rh blood type written on the ID card. This could lead to the Ethiopian armed forces emergency transfusion practice errors undetected. Objective- To assess ABO/Rh types on military identification cards against the current slide and test tube methods test results at Armed Forces Referral and Teaching Hospital (AFRTH) in Addis Ababa, Ethiopia. Methods- A hospital based cross-sectional study was conducted recruiting 400 soldiers attending the AFRTH from October 2015 to May 2016. Socio-demographic and clinical information were collected using format. ABO/Rh typing was determined using Test tube and Slide methods and compared against the ABO/Rh type written on soldiers’ identification card. The agreement between the two blood typing methods was also determined using kappa values. The data was cleaned, entered and analyzed by using SPSS version 20 software. Result- Out of 400 participants aged 18-55 years, 72 (18%) were females and 328 (82%) were males. As determined by the gold standard Test tube method, the ABO phenotypic frequency of Blood group O was the highest (38.5%) followed by A (34.5%), B (22.5%) and AB (4.5%). Rhesus (Rh) positivity rate was 369 (92.9%), while 31(7.1%) were Rh negative. There were a total of 50 (12.5%) discrepancies, of which 29 (7.25%) were ABO and 21 (5.25%) Rh types; 8 (2%) involved both ABO group and Rh type errors. The discrepancy rate was highest in participants having blood group A. Six out of 31 (19.4%) Rh negative participants actually carry Rh positive ID card. The majority of discrepancies were recorded in those participants employed before 1984 Ethiopian Calendar (55.17% for ABO and 47.62% for Rh). There was an excellent agreement (99.75%) between the test tube and slide methods (0.98 kappa). Conclusion-this study revaled that 50 out of 400 soldiers had a wrong blood type on their ID card; of these 29(7.27%) were ABO while 21(5.26%) Rh discrepancies and 8(2%) involved both ABO/Rh discrepancies. This plus the finding of remarkable number of Rh- participants carrying Rh+ labeled ID cards warrants the confirmation of blood groups on Military ID cards.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | ABO typing, Rh typing, Military ID card , Emergency transfusion, kappa value |
| Subjects: | R Medicine > R Medicine (General) U Military Science > U Military Science (General) |
| Divisions: | Africana |
| Depositing User: | Vincent Mpoza |
| Date Deposited: | 04 Oct 2018 08:29 |
| Last Modified: | 04 Oct 2018 08:29 |
| URI: | http://thesisbank.jhia.ac.ke/id/eprint/6699 |
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