SCI
17January
EarlyHigh-TiterPlasmaTherapytoPreventSevereCovid-19inOlderAdults
AddressreprintrequeststoDr.PolackatFundaciónINFANT,Gavilan94,BuenosAires(),Argentina,oratfpolack
infant.org.ar
LibsterR,PérezMarcG,WappnerD,etal.EarlyHigh-TiterPlasmaTherapytoPreventSevereCovid-19inOlderAdults.NEnglJMed.
BACKGROUND背景
Therapiestointerrupttheprogressionofearlycoronavirusdisease(Covid-19)remainelusive.Amongthem,convalescentplasmaadministeredtohospitalizedpatientshasbeenunsuccessful,perhapsbecauseantibodiesshouldbeadministeredearlierinthecourseofillness.
阻断年早期冠状病毒(新冠肺炎)进展的治疗方法仍然难以捉摸。其中,给住院患者注射康复期血浆没有成功,可能是因为应该在病程中更早地注射抗体。
METHODS方法
Weconductedarandomized,double-blind,placebo-controlledtrialofconvalescentplasmawithhighIgGtitersagainstsevereacuterespiratorysyndromecoronavirus2(SARS-CoV-2)inolderadultpatientswithin72hoursaftertheonsetofmildCovid-19symptoms.Theprimaryendpointwassevererespiratorydisease,definedasarespiratoryrateof30breathsperminuteormore,anoxygensaturationoflessthan93%whilethepatientwasbreathingambientair,orboth.Thetrialwasstoppedearlyat76%ofitsprojectedsamplesizebecausecasesofCovid-19inthetrialregiondecreasedconsiderablyandsteadyenrollmentoftrialpatientsbecamevirtuallyimpossible.
我们在轻度Covid-19症状发作后的72小时内,对成年患者进行了一项针对重症急性呼吸综合征冠状病毒2(SARS-CoV-2)的具有高IgG滴度的恢复期血浆的随机,双盲,安慰剂对照试验。。主要终点是严重的呼吸系统疾病,定义为每分钟30次呼吸或以上的呼吸频率,患者呼吸周围空气时的氧饱和度低于93%或两者。该试验因其预期样本量的76%提前终止,因为试验区域内Covid-19的病例显着减少,几乎不可能稳定招募试验患者。
RESULTS结果
Atotalofpatientsunderwentrandomization.Intheintention-to-treatpopulation,severerespiratorydiseasedevelopedin13of80patients(16%)whoreceivedconvalescentplasmaand25of80patients(31%)whoreceivedplacebo(relativerisk,0.52;95%confidenceinterval[CI],0.29to0.94;P=0.03),witharelativeriskreductionof48%.Amodifiedintention-to-treatanalysisthatexcluded6patientswhohadaprimaryend-pointeventbeforeinfusionofconvalescentplasmaorplaceboshowedalargereffectsize(relativerisk,0.40;95%CI,0.20to0.81).Nosolicitedadverseeventswereobserved.
共有名患者接受了随机分组。在意向性治疗人群中,接受恢复期血浆治疗的80例患者中有13例(16%)发生了严重呼吸系统疾病,接受安慰剂的80例患者中的25例(31%)中发生了25例(相对风险,0.52;95%的置信区间[CI]],0.29至0.94;P=0.03),相对危险度降低了48%。修改后的意向性治疗分析排除了6名在恢复期血浆或安慰剂输注之前发生主要终点事件的患者,显示出更大的影响范围(相对风险,0.40;95%CI,0.20至0.81)。没有观察到引起的不良事件。
CONCLUSIONS结论
Earlyadministrationofhigh-titerconvalescentplasmaagainstSARS-CoV-2tomildlyillinfectedolderadultsreducedtheprogressionofCovid-19.
对SARS-CoV-2的高滴度康复血浆早期给予轻度感染的老年人可降低Covid-19的进展。
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