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Appropriate use of convalescent plasma among COVID-19 patients: AABB guidelines

Written By : Dr. Kamal Kant Kohli Published On 2022-08-16T11:15:39+05:30  |  Updated On 16 Aug 2022 3:07 PM IST
Appropriate use of convalescent plasma  among COVID-19 patients: AABB guidelines
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The Association for the Advancement of Blood and Biotherapies (AABB) has released clinical practice guidelines for the appropriate use of COVID-19 convalescent plasma (CCP) in hospital and outpatient settings.

The guidelines are based on two living systematic reviews of randomized controlled trials (RCTs), the guidelines provide five specific recommendations for treating patients with COVID-19.

The guidelines are published in Annals of Internal Medicine.

COVID-19 convalescent plasma (CCP) has emerged as a potential treatment of COVID-19. However, meta-analysis data and recommendations are limited. A team lead by AABB's Clinical Transfusion Medicine committee studied published research to inform the guidelines. The two living systematic reviews of RCTs evaluating CCP from 1 January 2019 to 26 January 2022 comprised 33 RCTs assessing 21,916 participants.

Main Recommendations

1. COVID-19 convalescent plasma is most effective when transfused with high neutralizing titers to infected patients early after symptom onset.

2. AABB has recommends that nonhospitalized patients at high risk for disease progression should have COVID-19 convalescent plasma transfusion in addition to the usual standard of care.

3. The AABB recommends against COVID-19 convalescent plasma transfusion in hospitalized patients with moderate or severe disease but says that CCP transfusion should be added to usual standard of care for those who do not have SARS CoV-2 antibodies detected at admission and for those with preexisting immunosuppression.

4. The AABB recommends against prophylactic CCP transfusion for uninfected persons with close contact exposure to a person with COVID-19.

Researchers summarized results using the GRADE (Grading of Recommendations Assessment, Development and Evaluation) method. Recommendations were made under the assumption that patients would highly value avoiding risks for disease progression, morbidity, and mortality from COVID-19.

Thus, when the data suggested that there was limited harm from CCP transfusions and that there was benefit to CCP, the panel was prepared to make recommendations for CCP.

The authors say there are several advantages of CCP. While SARS-CoV-2 evolves and new variants of concern (VOCs) emerge that may evade monoclonal antibodies, high-titer CCP continues to be effective. CCP is also relatively easy to collect, making it a less expensive therapeutic option than other passive antibody therapies.

The AABB summarized their findings with a good clinical practice statement: CCP is most effective when transfused with high neutralizing titers early after symptom onset.

Reference:

Lise J. Estcourt, Claudia S. Cohn, Monica B. Pagano, et al; Clinical Practice Guidelines From the Association for the Advancement of Blood and Biotherapies (AABB): COVID-19 Convalescent Plasma. Ann Intern Med. [Epub 16 August 2022]. doi:10.7326/M22-1079

Annals of Internal MedicineAABB guidelinesCOVID-19convalescent plasmaCCPSARS-CoV-2COVID patients
Source : Annals of Internal Medicine
Dr. Kamal Kant Kohli
Dr. Kamal Kant Kohli

Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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