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Enregistrement W3092247891 · doi:10.1111/vox.12944

Vox Sanguinis International Forum on Hospital Transfusion Services' Response to COVID‐19: Responses

2020· article· en· W3092247891 sur OpenAlexaff
Mark H. Yazer, Bryon Jackson, Monica B. Pagano, Naomi Rahimi‐Levene, Victoria Peer, José Luis Bueno, Ryan P. Jackson, Hua Shan, Luiz Amorim‐Filho, Maria Esther Lopes, Carla Boquimpani, Ulrik Sprogøe, Mie Topholm Bruun, Kjell Titlestad, Kylie Rushford, Erica M. Wood, Zoe McQuilten, Vincenzo De Angelis, Michela Delle Donne, Mike Murphy, Julie Staves, Duck Cho, Fumihiko Nakamura, Akira Hangaishi, Jeannie Callum, Yulia Lin, Mostafa Mogaddam, Ahmad Gharehbaghian, Miquel Lozano

Notice bibliographique

RevueVox Sanguinis · 2020
Typearticle
Langueen
DomaineMedicine
ThématiqueBlood transfusion and management
Établissements canadiensHealth Sciences CentreUniversity of TorontoSunnybrook Health Science Centre
Organismes subventionnairesnon disponible
Mots-clésEconomic shortagePandemicMedicineCoronavirus disease 2019 (COVID-19)Blood transfusionDispose patternMedical emergencyBlood bankBusinessDemographicsSample (material)Emergency medicineSurgeryPathology

Résumé

récupéré en direct d'OpenAlex

Naomi Rahimi-Levene & Victoria Peer Demographics: Our hospital blood bank accepts samples for pre-transfusion testing from patients who were confirmed or suspected to be infected with novel coronavirus. We do not release products for an individual patient in a cooler. We have a plan to deal with samples with novel pathogens, which was implemented during the 2003 SARS epidemic. Instruction was mandatory for all laboratory personnel explaining the infectivity of the virus and how to use personal protective clothing when handling a suspected or confirmed sample. They were also instructed on how to work in the BSC, where to store the samples and how to dispose of the waste. The utilization of blood components has not changed since the start of the epidemic. But since elective surgical procedures have been postponed due to the epidemic, we expect our usage to go down. No, we do not expect shortages in our hospital, as the national blood service Magen David Adom does not have shortages at this stage. However, if the situation in the country changes and the national blood services will have a shortage in donors, we will be affected by this as they are our only supplier. It is important to have both a national and a local policy for dealing with infected samples, and the staff must be familiar with all aspects of it. It is important to have a national entity that can answer questions arising during the pandemic, as unexpected scenarios may occur. Communication between the blood supplier and the hospital blood banks is cardinal. Especially as there are already look-back issues of donors either in quarantine or infected, whose donated units have already been issued. Locally, in the laboratory it is important to have a plan dividing the staff into shifts that rotate and do not have contact with other in order to avoid neutralizing the whole team if an individual is infected. Magen David Adom, the national blood service, is beginning to collect convalescent plasma from COVID-19 patients tomorrow. The plan is to collect 600 ml for each convalescent. Pathogen reduction will be performed either by the Intercept® Blood System or by the Mirasol® Pathogen Reduction Technology System. The decision is being made at this time. There will be a national policy to whom it will be transfused (Personal Communication, Prof. Eilat Shinar, Director of Magen David Adom National Blood Services). José Luis Bueno Yes, our hospital blood bank accepts samples for pre-transfusion testing from patients who were confirmed or suspected to be infected with novel coronavirus. At our hospital, we are assuming that all the patients and workers are actually infected. We have improved the infection risks (hypoclorite, hand washing, alcoholic dilutions…but for every sample and everybody). Yes, I think so, but nobody had read it before, I guess. Yes, definitely. All workers have been trained according to their risk assessment. It has been dramatically reduced. Our transfusion activity has been reduced to just urgent transfusion. We have begun today a clinical trial to transfuse convalescent plasma from recovered patients/donors to mild–severe new patients. Actually, the first randomized patient has received today a plasma transfusion. We think this new strategy will increase our transfusion activity in the next weeks. No, we do not anticipate blood component shortages. At the beginning of the epidemic in Madrid, we expected a shortage, and we implemented different strategies, but at the end it was not necessary, as lot of donors came during the first days to donate. This, beside the blood component reduction due to routine surgery suspension, took to a reduced need of blood components. Be ready to implement a quick and efficient convalescent plasma programme. Yes, our centre will offer convalescent plasma. Please see our plasma manufacturing protocols in Annex 1. Information on the clinical trial may be obtained by writing directly to the corresponding author. Convalescent donors will be recruited according to the inclusion and exclusion criteria included in the protocol of this clinical trial. (See protocol). Briefly, convalescent donors are cured patients after the COVID-19 infection. To verify their cure, a double-negative RNA RT-PCT (with at least 24 h interval) and a specific antibodies against SARS-CoV-2 will be performed. Also, these donors will fulfil the requirements to be accepted as a general altruistic blood donor, as is defined in the European Guidelines 1 and the Spanish RD 1088/2005. CD will be contacted by phone using the regional or national COVID-19 patient's database. CD candidates will be asked to participate in this trial and will be pre-screened according to the previous inclusion and exclusion criteria. If agree, CD will be appointed to the apheresis collection centre, for: Note: Any apheresis machines and kits able to collect the defined product would be also acceptable. Note: Any other plasma inactivation system validated for transfusion products could also acceptable. (Consider, e.g. Methilene Blue or Amotosalen procedures). Plasmapheresis data, donor tests and labelling will be done using the software Coyote, or any other software designed for managing blood components. PR-HP used in this study is the same product used for the plasma transfusion indications in the clinical practice. These products are collected and manufactured by the Regional Blood Transfusion Centers in Spain and are distributed to hospital transfusion services for their use. The properties, preparation, quality requirements, storage and transport requirements, labelling requirements and warnings for the manufacturing of these products are well described in the chapter 2 of the Guide to the preparation, use and quality assurance of blood components. 18th ed. 1. For an easy consultation of those requirements, we have added this chapter as an annex. at the end of this document. The investigators of this trial do not consider these differences between the two plasma products to be critical, and regarding objectives of this trial both product can be considered as equivalent on the manufacture procedure, being the only critical difference the presence of high title of neutralizing anti SARS-CoV-2 antibodies, in contrast to the plasma coming from healthy donors. Ryan P. Jackson & Hua Shan Demographics: Yes, we accept samples for pre-transfusion testing. Yes. Under our standard operating protocols, universal precautions apply to all specimen handling. There is, however, no specific detail regarding novel pathogens. Our protocols refer transfusion laboratory staff to follow the SHC Lab administration policies and procedures as well. Therefore, our policy for how to handle PUI blood specimens and our COVID-19 response in general were shaped by guidance provided by the SHC Lab Quality programme. At each occurrence or encounter of a future novel pathogen, we will look to the SHC and Lab Quality/Safety leadership for guidance. Yes. During operational staff huddles, the SHC and SHC Lab published guidelines were discussed. SHC Lab Quality also assigned lessons (i.e. readings with required quizzes and signatures at completion) to all AP and Clin Lab staff. All Transfusion Service staff, supervisors and manager were included in these trainings. Overall blood usage has decreased by about 30% since the start of the pandemic. 'With a continued risk to blood product supply, we ask for your quick review of and adherence to transfusion and care guidelines below. The use of restrictive transfusion practices has been shown to be equivalent or better for patient care in many scenarios and should always be practised. During this time of uncertainty, it is imperative to use transfusion judiciously. RBC transfusions: Platelet transfusions: transfusions should be considered for counts below the following thresholds: Plasma transfusions: avoid prophylactic therapy based on INR prior to procedures. Meta-analysis finds that patients with INR ≤2·0 do not have higher bleeding risk compared to normal range INR across a wide variety of minor and major procedures 7. Consultation with transfusion medicine (Pager #12027 staffed 24/7) and haematology (SHC: p#27436 SCH/LPCH #24362) is encouraged with any blood product questions, especially on patients with platelet refractoriness or bleeding.' The Transfusion Service/Blood Bank remains a 'little different' and therefore 'unique' from the rest of laboratory operations within the hospital as biological blood products, besides blood specimens, are handled in our setting. During the COVID-19 pandemic, the first version of the Laboratory 'One-Point Lesson (OPL) regarding specimen handling' for our institution did not quite cover the manual serology of blood specimens, which remains a common practice even during this era of automation, and other blood product manipulations (e.g. modification methods such as separation, aliquoting and washing). In the absence of strong guidance from the CDC, this led to some uncertainty, and personnel became concerned about safety. We were able to abate these concerns and ensure safety through a process of self-assessment, adaptation of some best practices from other institutions and, ultimately, implementation of further guidelines from the CDC. In sum, we think a thorough, independent assessment of the Transfusion Service, Blood Bank and blood collection centre as to the physical environment, methods of specimen or blood product processing, and equipment in use should be initiated early in preparation for 'safe handling' guidance to be issued as quickly as possible to working personnel. We are currently planning to use convalescent plasma from COVID-19 patients in a trial and for compassionate use. The dosing scheme is still being worked out, but eligible patients are expected to get one unit of plasma. Patient eligibility will be determined per FDA IND criteria 8. We plan to exclude patients who are eligible for any other active trials at Stanford (currently, this will mostly pertain to patients who are eligible for remdesivir). Due to practical considerations, we will not seek pathogen inactivation of the plasma at this time. Luiz Amorim-Filho, Maria Esther Lopes & Carla Boquimpani Demographics: Yes. No, we did not have this specific preparedness plan. Now we are developing a comprehensive plan to encompass those situations. Yes. Everyday there is a training session, with a limited number of attendees. Red blood cell concentrates' utilization was reduced by 21·2% since the start of the pandemic in Rio de Janeiro. Platelet utilization is stable; plasma utilization was reduced by 24%. It should be stressed that we only treat patients with primary haematological diseases (leukaemia, lymphoma, myeloma, sickle cell disease, etc.). The reduction in red blood cell and plasma utilization was due to the fact that many outpatients are missing their medical appointments, even if they were scheduled to be transfused. This is especially true for sickle patients in a chronic transfusion programme. Platelets are almost exclusively transfused for inpatients, that is why platelet utilization rate is stable during the pandemic. YES, we anticipate component shortages. Our hospital is part of a complex which includes the main blood centre in Rio de Janeiro city. Since it is very hard to reduce or adapt blood utilization in patients with severe haematological diseases, we concentrated our efforts on alternative strategies to donor recruitment during the pandemic. Namely, replacing mobile drive in universities, companies and churches (all of them closed) by mobile drives in the armed forces locals and in the large private condominiums. More than 1000 people live in each one of these condominiums, and the vast majority are staying at home due to the lockdown recommendation. For our fixed site, we are stimulating blood donation under appointment, in order to comply with social distance measures. Regarding the blood utilization side, the only difference was a more restrictive transfusion policy for sickle cell patients. If we had a blood shortage, we could opt for simple transfusion instead of partial exchange transfusion in some situations (but so far we did not have a blood shortage). The main difficulty is related to our workforce. A large proportion is ill or have had close contact with a confirmed case. In addition, public transport is restricted and our employees face many problems in leaving their homes. A reduction in the number of workers able to go to the hospital was taken into account in our contingency plan. However, the mitigating measures that we established were not sufficient, due to the magnitude of the pandemic and to the number of health professionals directly affected by COVID-19. The lessons we learned about this are that we need to update the plan daily and adapt our activities to the availability of employees—for example suspending the activity of the centralized transfusion team. Yes, we are collecting it for use in other hospitals to where we refer COVID-19 patients. We are selecting donors with an anti-SARS-CoV-2 IgG titre ≥80; these donors must also have a neutralizing antibody titre ≥1:64. The plasma dose is 200–300 ml/patient (a single transfusion). We accept female donors; if they have already become pregnant, we screen their plasma for anti-HLA antibodies. For plasma donors O and A, we are also performing an anti-A (and anti-B, for O plasma) agglutinin titration. We are inactivating pathogens with Amotosalen + UVA irradiation technology (Cerus technology). Ulrik Sprogøe, Mie Topholm Bruun & Kjell Titlestad Demographics: Yes, we accept all samples for pre-transfusion testing, etc. We do not release products for an individual patient in a cooler. As far as we know, it does not, except contingency plans in case of sudden emergencies with patients contaminated with radiation, chemicals or biological agents. A hospital-wide mandatory e-learning programme concerning prober hand washing and other protective measures was introduced by hospital management. First-line medical staff underwent further hands-on training regarding the use of protective equipment, face masks, etc. Utilization of RBC: 3 weeks (16th March – 5th April 2020): −28% Utilization of platelets: 3 weeks (16th March – 5th April 2020): −17% Utilization of plasma: 3 weeks (16th March – 5th April 2020): −44% No, we do not anticipate blood component shortages. No, we do not have any further comments. Yes, patients will receive intravenous infusion with 2 × 300 ml convalescent anti-SARS-CoV-2 plasma. Both units are to be administered within a 24-h period. Units will not be pathogen inactivated. Kylie Rushford, Erica M. Wood & Zoe K. McQuilten Demographics: Yes, samples were accepted. If a cooler of blood products is ordered, our practices are described below. Yes. The current novel pathogen method was reviewed and a separate additional protocol was written for COVID-19. This was distributed to all laboratory staff as part of COVID-19 preparations. Laboratory disinfection protocols and the correct use of PPE were reviewed with laboratory staff. The laboratory staff are required to maintain social distancing, and laboratory workplaces have been modified to implement this. However, this is intended to stop the virus from spreading between staff members, rather than protecting laboratory workers from infection from COVID-19-containing samples. No change to date. Yes, shortages are anticipated as indicated below. The hospital has already cancelled elective surgery as part of the state level and national level response. Locally, we are enforcing single unit red cell transfusions in anaemic, haemodynamically stable non-bleeding patients who do not have an underlying haematological or oncological hypoproliferative disorder. If blood component shortages do occur in the future, our institutional emergency blood management protocol will be activated. This involves notification of the Hospital Incident Commander and Haematology Registrar/Haematologist for clinical input and triaging of product requests for transfusions. Australia also has a National Blood Supply Contingency Plan (available at: https://www.blood.gov.au/nbscp) with which we will comply if it is activated. This outlines responsibilities and actions to be taken by governments, the national blood service, hospitals and laboratories. Organizing our staff in a way to maintain separate teams that do not interact to minimize potential spread of the virus amongst staff and the number of contacts that would need to be isolated if a staff member becomes infected has been a challenge. This is difficult in our 24/7 open-plan laboratories where the Blood Bank, Haematology, Biochemistry and Specimen Reception staff all share a large work space. Social distancing, correct use of PPE and frequent disinfection of work benches have been implemented. We have changed our work practice so that interactions between staff are via written messages or video conferencing whenever possible. Convalescent plasma from COVID-19 patients is not yet available in our jurisdiction. We are developing protocols for its use within clinical trials, and have been participating in dialogue regarding trial design and product specifications through the ISBT Clinical Practice Working Party and our national and international research networks. Our national blood supplier is investigating the feasibility of providing this product. Vincenzo de Angelis & Michela Delle Donne Demographics: Yes, samples were accepted. Coolers are not used. No, regular routine universal precautions are mandatory for any blood sample (potentially Yes, different and provided on the of the At a national a specific is provided by National All hospitals in have to the emergency (all have been by COVID-19 by the surgical and medical This was for a of blood utilization during the weeks of At the beginning of there was also a in blood but a increase due to a on public national and Regional Blood National This was for an increase of the in blood Yes, we anticipate blood component shortages. Plan measures (e.g. scheduled to of donors to the collection actions for the on use of blood components restrictive transfusion early of units after surgery – not than the we need to for a better and a adaptation of blood collection to changes in the of blood to avoid either shortage or of blood components. this is not a programme for many protocols using plasma from patients who recovered from COVID-19 are or in For see the on the preparation of plasma to be used in the of patients with published by and available at & Demographics: Yes, samples were accepted. No changes to the practice were made if a cooler of blood products was for a patient with confirmed or suspected COVID-19. Yes. in to changes to practice. change as described samples not after to minimize the risk of by when the sample Yes. Red cell and usage has reduced by about of of elective Platelet usage is We do not anticipate any blood component shortages. The for has been to minimize at a time when blood usage has reduced We have reduced our by about to maintain normal procedures to avoid amongst the many hospital staff in some of transfusion. Yes. We will be providing for patients in clinical is 2 units of plasma within Plasma will not be Demographics: Yes, samples were accepted. Coolers are not issued on any In response to in we established a on dealing with samples from patients suspected or confirmed to have been infected with As for novel pathogens, we have the since Our hospital has COVID-19 to the hospital staff and encouraged them to the of SARS-CoV-2 and its No has been No, we do not anticipate blood component shortages. patient in our hospital was transfused with blood from a donor to confirmed COVID-19 the that the donor donated blood to the confirmed and we that the blood from the donor was blood from donors with COVID-19 is considered we need to be about it hard and the for COVID-19 should ask confirmed or suspected about their blood donation For we are not the use of convalescent plasma from COVID-19 patients as a We do not have a system for pathogen inactivation of donated blood in & Demographics: Yes, samples are accepted. a cooler is ordered, our process is described Yes. from patients with novel pathogens are almost always to the National of which is to our infection of SARS-CoV-2 in many However, the risk of SARS-CoV-2 infection can be reduced by this at our by as Yes. In to utilization of and plasma in April were reduced by and The is by a in surgical procedures. A state of emergency was in on We are healthy donors may to go for blood Red that blood donation was reduced by 30% after the of and plasma are currently by Red any It may be by reduction of If this pandemic blood component shortages may occur in the We have not yet how to or minimize shortages. but we would be to share any lessons whenever they will be No, we are not planning to use convalescent plasma from COVID-19 patients to treat severe of the & Demographics: Yes, our hospital does accept samples. a cooler of blood products is our process is as Yes, by Yes, policies and procedures in and a on the risks to from handling samples from COVID-19 patients. 1 to April 1 to April platelet plasma blood component shortages are We have to patient blood management and to in absence of and 1 unit at a time in the absence of bleeding for We use intravenous for for chronic blood and and We have instructed to increase the use of for patients and to the × for hypoproliferative We use for We do not use used for all Plasma is used for has during and for surgery We with for to for transfusion We have reduced our of to the risk of We have been the hospital Blood of the National from our National Blood Our National and Blood plans for shortages were and have well during the pandemic so There has been national by hospitals to reduce blood use and increase the use of patient blood management to a The public has with coming to the blood to maintain across the In we should have had a plan for the use and of convalescent plasma the of a pandemic its in and As a a protocol was required to be in weeks when we could have anticipated its We have two randomized clinical trials for the use of convalescent plasma and is a trial of convalescent plasma standard of care in with COVID-19 The trial is for a of patients from hospitals in and the The dose is a single ml transfusion of apheresis plasma collected from a donor after from confirmed COVID-19 and with anti-SARS-CoV-2 antibodies. No required titre is required for release of the product. The donor must all the standard donor criteria by the and the The primary is the need for for or at important will be the of in the care and hospital, and the change in between and The trial is expected to to is a designed trial in that will in Pathogen inactivation will not be used. between and days after will be required to for SARS-CoV-2 by or by blood testing for At the time of there is currently no plan in to consider an programme for convalescent plasma of a clinical & Demographics: Yes. If a cooler of blood products was for a patient with confirmed or suspected our process is described below. As an a under laboratory staff the patient's in the Yes. Since all the elective were cancelled and only and and for were blood products, patient blood utilization to than 30% of We do anticipate some blood component shortages. more restrictive transfusion blood was to be quickly as as possible about the and of the from international and national who are in the and change your routine policy in our But our blood supplier Blood Transfusion is planning to do I was units of convalescent plasma. However, the convalescent plasma has been using in some hospitals in For some large medical in where are dealing with COVID-19 infected patients have been using the convalescent plasma and a for collecting such plasma from cured patient has been established in Blood Transfusion in as well as the other in each across country and they have to follow that have been and distributed by It is that is a large and country and blood transfusion as part of system is a national and which is Blood Transfusion every blood transfusion in every of convalescent plasma and to other main which are and a of the of collected plasma in each is

Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.

Comment cette classification a été obtenuedéplier

Prédiction machine sur la base complète

Imitation des enseignants

Ni prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.

score de la tête « metaresearch » (Codex)0,011
score de la tête « metaresearch » (Gemma)0,038
Version: metacan-v3-hybrid-931329e0061cStatut de validation: machine_predicted_unvalidated
Catégories candidatesaucune
Catégories consensuellesaucune
DomaineSignal candidat: aucune · Signal consensuel: aucune
Devis d'étudeSignal candidat: Sans objet · Signal consensuel: Sans objet
GenreSignal candidat: Autre · Signal consensuel: aucune
Score de désaccord entre enseignants0,083
Score d'incertitude au seuil0,279

Scores du classifieur distillé par catégorie (deux têtes)

CatégorieCodexGemma
Métarecherche0,0110,038
Méta-épidémiologie (sens strict)0,0020,001
Méta-épidémiologie (sens large)0,0010,001
Bibliométrie0,0010,001
Études des sciences et des technologies0,0040,002
Communication savante0,0050,003
Science ouverte0,0030,007
Intégrité de la recherche0,0260,015
Charge utile insuffisante (le modèle a refusé de juger)0,0830,018

Scores machine (provisoires)

Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.

Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.

Tête enseignante Opus0,019
Tête enseignante GPT0,300
Écart entre enseignants0,281 · la distance entre les deux têtes enseignantes sur ce seul travail
Statut de validationscore_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découle

Classification

machine, non validée

Prédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.

Les modèles n’ont appliqué aucune catégorie : rien dans la taxonomie ne correspondait à ce travail.
Devis d'étudeSans objet
Domainenon disponible
GenreAutre

Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».

En bref

Citations5
Publié2020
Routes d'admission1
Résumé présentoui

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