Examining the potential risk factors for variable airflow limitation in patients recovering from SARS-CoV-2 Omicron variant infection: A case-control study
Abstract
BACKGROUND
The Omicron strain of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has spread globally. However, it remains uncertain whether variable airflow limitation(VAL) occurs during the recovery phase after contracting the Omicron variant. To address this question, we conducted a study to examine the occurrence of VAL in patients infected with the Omicron variant (BA.1) of SARS-CoV-2, and we also investigated the potential risk factors associated with this phenomenon.
METHODS
We summarized and analyzed data taken from the electronic health records of recovering patients who had contracted the Omicron variant. The information was obtained from the Shuixi Branch of our Hospital during the period from January 22 to February 24, 2022. We focused on examining the occurrence of VAL and identifying the associated risk factors among these patients.
RESULTS
In this case-control study, a total of 176 patients were enrolled. The occurrence of VAL was observed in 9.66% (17 individuals). Patients with VAL showed significantly elevated levels of the modified Borg dyspnea score, daytime cough score, nighttime cough score, chest computed tomography severity score, and Treg ratio compared to those without VAL. Additionally, patients with VAL had a lower 6MWD value compared to those without it. Logistic regression analysis demonstrated that the modified Borg dyspnea score independently increased the risk of Omicron infection with VAL, with an odds ratio of 3.375, and a 95%…
How strong is the evidence?
Evidence Hub reads this as a case-control, done in people. Its evidence level is 4 of 5 (Low · observational). Observational designs can show an association but not prove cause. Reported size: 176 participants or records.
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