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COVID pneumonitis, a risk factor for persistent lung allograft dysfunction
Respirology ; 28(Supplement 2):105, 2023.
Article in English | EMBASE | ID: covidwho-2319870
ABSTRACT
Introduction/

Aim:

There is a paucity of data regarding the impact of COVID-19 on allograft function in lung transplant (LTx) recipients. Method(s) We performed a retrospective cohort study of all living LTx recipients in our service between January 2020 and September 2022. Patients with COVID-19 were identified and baseline characteristics recorded. Pre- and post-COVID-19 spirometry was used to identify persistent decline in allograft function (>=10% of FEV 1 decline at 90 days after infection and failure to return to baseline during the study period). Multivariable logistic regression was performed to identify risk factors associated with persistent allograft decline. Result(s) 128/387 (33%) LTx recipients tested positive to SARS-CoV-2 during the study period. The majority, 125 (97%) during the Omicron waves. In those with COVID-19, the median (IQR) recipient age was 50.6 (22-77) with median time post-transplant of 1522 (17-9842) days. The cohort was of Caucasian ethnicity, 105 (82%), with vaccination rates (98.4%) and 48% female. Chronic lung allograft dysfunction (CLAD) was present at time of infection in 48 (37.5%). Severe disease (oxygen requirement) was present in 40 (31%) patients and 10 (7.8%) died. Recipients were followed for median of 172 days (range 90-339) post infection. Persistent FEV 1 decline occurred in 37 (31.4%). Multivariate analysis showed severe disease was independently associated with an increased risk of persistent FEV 1 decline (OR 5.55 [95% CI 2.28-13.48] p =< 0.001). Non-Caucasian ethnicity (OR 2.83, [95% CI 0.92-8.65], p = 0.07) and the presence of CLAD (OR 2.39, [95% CI 0.94-6.08], p = 0.06), were positively correlated, with weak association. No significant association between recipient age, gender, time post-transplant, early COVID therapy, SARS-CoV-2 variant with persistent FEV 1 decline was seen. Conclusion(s) Persistent decline in lung allograft function is common post COVID-19 infection. Severe disease is strongly associated with this outcome and these patients should be monitored for poor long-term allograft recovery. Further investigation into pathological mechanisms responsible for persistent allograft decline is required.
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Full text: Available Collection: Databases of international organizations Database: EMBASE Type of study: Prognostic study Language: English Journal: Respirology Year: 2023 Document Type: Article

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Full text: Available Collection: Databases of international organizations Database: EMBASE Type of study: Prognostic study Language: English Journal: Respirology Year: 2023 Document Type: Article