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Morphometric vertebral fractures at hospitalization associate with Long COVID occurrence
Luigi di Filippo1, Mauro Doga1, Francesca Mangini1
1Institute of Endocrine and Metabolic Sciences, Università Vita-Salute San Raffaele, IRCCS Ospedale San Raffaele, via Olgettina 60, Milan, 20132, Italy.
Purpose:
Long COVID is a multisystemic syndrome leading to significant morbidity. To date, a comprehensive characterization of underlying risk factors is still being defined. Osteoporosis and vertebral fractures (VFs) were associated with worse acute COVID-19 and impaired respiratory recovery after hospitalization. Therefore, we aimed to assess the potential relationship between VFs and the occurrence of the Long COVID syndrome.
Methods:
Patients hospitalized for acute COVID-19 and subsequently seen in our outpatient follow-up clinic 6-months after discharge were evaluated. We retrospectively included patients with available lateral chest X-rays performed at admission suitable for VFs assessments. We excluded patients with active neoplasia, and those managed at home or those hospitalized in ICU. Long COVID was diagnosed with a multidisciplinary evaluation.
Results:
One-hundred sixty-two patients were included in the study. At least one VF was found in 42 patients at presentation (25.9%). Patients with VFs were significantly older and predominantly males. Long COVID was diagnosed in 25 patients (15.4%). No differences were found between patients with and without Long COVID regarding demographics and comorbidities; however, those with Long COVID were characterized by a higher prevalence of VFs at time of hospitalization for acute COVID-19 (48% vs. 22%, p = 0.01). After matching patients with and without VFs in a 1:1 ratio for demographics, comorbidities, and COVID-19 severity, a total of 84 patients were analysed and those presenting VFs were characterized by a significant higher prevalence of Long COVID (28.6% vs. 9.5%, p = 0.04) and VFs resulted as the only significant independent risk factor for Long COVID occurrence.
Conclusions:
We observed that prevalent VFs detected at hospital admission were distinctive clinical features of patients presenting with Long COVID 6-months after discharge, independently from acute disease severity and other confounding factors. This highlights a potential detrimental association between skeletal fragility and the development of Long COVID.
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