Zhongmei Yi , Fang Zhou , Yumeng Zhou , Chunxi Wu , Bin Zhang
{"title":"红细胞摘除术在治疗红细胞增多症中的临床应用","authors":"Zhongmei Yi , Fang Zhou , Yumeng Zhou , Chunxi Wu , Bin Zhang","doi":"10.1016/j.transci.2025.104159","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><div>This study aimed to clarify the clinical utility of erythrocytapheresis as a treatment for erythrocytosis, including polycythemia vera and secondary erythrocytosis.</div></div><div><h3>Material and methods</h3><div>A retrospective analysis was conducted on 83 patients (84.34 % male, mean age 49.66 years (16.23 years)) who underwent a total of 104 erythrocytapheresis sessions between September 2021 and April 2025. The key parameters measured included the depleted red blood cell (RBC) volume, the hemoglobin (HB) and hematocrit (Hct) reductions, and adverse reactions.</div></div><div><h3>Results</h3><div>Erythrocytapheresis significantly reduced the post-treatment RBC counts (25.22 %), the HB (25.19 %) level and the Hct (23.62 %), the white blood cell counts, (23.37 %) and the platelet counts (8.38 %) (all <em>p</em> < 0.05). The median depleted RBC volume was 1405.5 mL (range 1011.75–1677.5 mL). The median post-treatment target Hct was 40 % (range 40–45 %). The mean post-treatment Hct was in fact 47.57 % (6.54 %), which was higher than the target, and the mean Hct error ratio was 14.23 % (12.95 %). When the replacement solution was physiological saline, an adverse reaction (hypotension) occurred during 4.81 % of the 104 erythrocytapheresis sessions, but only in patients with a depleted RBC volume/weight (D/W) ≥ 25 mL/kg. No significant differences were observed between the Spectra Optia and COM.TEC blood cell separators.</div></div><div><h3>Discussion</h3><div>Erythrocytapheresis effectively reduces the RBC mass in patients with erythrocytosis.In rough terms, the post-treatment target Hct = the post-treatment Hct × 0.88, our research team has officially designated this formula as the 'Southwest Formula'. In the future, we will continue to expand the sample size to enhance the precision of this formula and better guide the clinical application of erythrocytapheresis.</div></div>","PeriodicalId":49422,"journal":{"name":"Transfusion and Apheresis Science","volume":"64 3","pages":"Article 104159"},"PeriodicalIF":1.4000,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Clinical application of erythrocytapheresis in the treatment of erythrocytosis\",\"authors\":\"Zhongmei Yi , Fang Zhou , Yumeng Zhou , Chunxi Wu , Bin Zhang\",\"doi\":\"10.1016/j.transci.2025.104159\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Background</h3><div>This study aimed to clarify the clinical utility of erythrocytapheresis as a treatment for erythrocytosis, including polycythemia vera and secondary erythrocytosis.</div></div><div><h3>Material and methods</h3><div>A retrospective analysis was conducted on 83 patients (84.34 % male, mean age 49.66 years (16.23 years)) who underwent a total of 104 erythrocytapheresis sessions between September 2021 and April 2025. The key parameters measured included the depleted red blood cell (RBC) volume, the hemoglobin (HB) and hematocrit (Hct) reductions, and adverse reactions.</div></div><div><h3>Results</h3><div>Erythrocytapheresis significantly reduced the post-treatment RBC counts (25.22 %), the HB (25.19 %) level and the Hct (23.62 %), the white blood cell counts, (23.37 %) and the platelet counts (8.38 %) (all <em>p</em> < 0.05). The median depleted RBC volume was 1405.5 mL (range 1011.75–1677.5 mL). The median post-treatment target Hct was 40 % (range 40–45 %). The mean post-treatment Hct was in fact 47.57 % (6.54 %), which was higher than the target, and the mean Hct error ratio was 14.23 % (12.95 %). When the replacement solution was physiological saline, an adverse reaction (hypotension) occurred during 4.81 % of the 104 erythrocytapheresis sessions, but only in patients with a depleted RBC volume/weight (D/W) ≥ 25 mL/kg. No significant differences were observed between the Spectra Optia and COM.TEC blood cell separators.</div></div><div><h3>Discussion</h3><div>Erythrocytapheresis effectively reduces the RBC mass in patients with erythrocytosis.In rough terms, the post-treatment target Hct = the post-treatment Hct × 0.88, our research team has officially designated this formula as the 'Southwest Formula'. In the future, we will continue to expand the sample size to enhance the precision of this formula and better guide the clinical application of erythrocytapheresis.</div></div>\",\"PeriodicalId\":49422,\"journal\":{\"name\":\"Transfusion and Apheresis Science\",\"volume\":\"64 3\",\"pages\":\"Article 104159\"},\"PeriodicalIF\":1.4000,\"publicationDate\":\"2025-05-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Transfusion and Apheresis Science\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1473050225000965\",\"RegionNum\":4,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"HEMATOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Transfusion and Apheresis Science","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1473050225000965","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"HEMATOLOGY","Score":null,"Total":0}
Clinical application of erythrocytapheresis in the treatment of erythrocytosis
Background
This study aimed to clarify the clinical utility of erythrocytapheresis as a treatment for erythrocytosis, including polycythemia vera and secondary erythrocytosis.
Material and methods
A retrospective analysis was conducted on 83 patients (84.34 % male, mean age 49.66 years (16.23 years)) who underwent a total of 104 erythrocytapheresis sessions between September 2021 and April 2025. The key parameters measured included the depleted red blood cell (RBC) volume, the hemoglobin (HB) and hematocrit (Hct) reductions, and adverse reactions.
Results
Erythrocytapheresis significantly reduced the post-treatment RBC counts (25.22 %), the HB (25.19 %) level and the Hct (23.62 %), the white blood cell counts, (23.37 %) and the platelet counts (8.38 %) (all p < 0.05). The median depleted RBC volume was 1405.5 mL (range 1011.75–1677.5 mL). The median post-treatment target Hct was 40 % (range 40–45 %). The mean post-treatment Hct was in fact 47.57 % (6.54 %), which was higher than the target, and the mean Hct error ratio was 14.23 % (12.95 %). When the replacement solution was physiological saline, an adverse reaction (hypotension) occurred during 4.81 % of the 104 erythrocytapheresis sessions, but only in patients with a depleted RBC volume/weight (D/W) ≥ 25 mL/kg. No significant differences were observed between the Spectra Optia and COM.TEC blood cell separators.
Discussion
Erythrocytapheresis effectively reduces the RBC mass in patients with erythrocytosis.In rough terms, the post-treatment target Hct = the post-treatment Hct × 0.88, our research team has officially designated this formula as the 'Southwest Formula'. In the future, we will continue to expand the sample size to enhance the precision of this formula and better guide the clinical application of erythrocytapheresis.
期刊介绍:
Transfusion and Apheresis Science brings comprehensive and up-to-date information to physicians and health care professionals involved in the rapidly changing fields of transfusion medicine, hemostasis and apheresis. The journal presents original articles relating to scientific and clinical studies in the areas of immunohematology, transfusion practice, bleeding and thrombotic disorders and both therapeutic and donor apheresis including hematopoietic stem cells. Topics covered include the collection and processing of blood, compatibility testing and guidelines for the use of blood products, as well as screening for and transmission of blood-borne diseases. All areas of apheresis - therapeutic and collection - are also addressed. We would like to specifically encourage allied health professionals in this area to submit manuscripts that relate to improved patient and donor care, technical aspects and educational issues.
Transfusion and Apheresis Science features a "Theme" section which includes, in each issue, a group of papers designed to review a specific topic of current importance in transfusion and hemostasis for the discussion of topical issues specific to apheresis and focuses on the operators'' viewpoint. Another section is "What''s Happening" which provides informal reporting of activities in the field. In addition, brief case reports and Letters to the Editor, as well as reviews of meetings and events of general interest, and a listing of recent patents make the journal a complete source of information for practitioners of transfusion, hemostasis and apheresis science. Immediate dissemination of important information is ensured by the commitment of Transfusion and Apheresis Science to rapid publication of both symposia and submitted papers.