New onset acute ischemic stroke following COVID 19: A case control study
Abstract
Background: Neurological manifestations of coronavirus disease 2019 (COVID?19) have been highlighted. COVID?19 potentially increases the risk of thromboembolism. We aimed to compare patients with COVID?19 with and without new?onset acute ischemic stroke (AIS). Materials and Methods: In this single?center retrospective case–control study, demographics, clinical characteristics, laboratory findings, and clinical outcomes were compared between 51 patients with both COVID?19 and AIS (group A) and 160 patients with COVID?19 and without AIS (group B). Results: Patients in group A were significantly older, more likely to
present with critical COVID?19 (P = 0.004), had higher rates of dmission in the intensive care unit (P < 0.001), more duration of hospitalization (P < 0.001), and higher in?hospital mortality (P < 0.001). At the time of hospitalization, O2 saturation (P = 0.011), PH (P = 0.04), and HCO3 (P = 0.005) were lower in group A. White blood cell count (P = 0.002), neutrophil count (P < 0.001), neutrophil?lymphocyte ratio (P = 0.001), D?Dimer (P < 0.001), blood urea nitrogen (BUN) (P < 0.001), and BUN/Cr ratio (P < 0.001) were significantly higher in patients with AIS. Conclusion: Stroke in COVID?19 is multifactorial. In addition to onventional risk factors of ischemic stroke (age and cardiovascular risk factors), we found that patients with more severe COVID?19 are more prone to ischemic stroke. Furthermore, leukocyte count, neutrophil count, neutrophil?lymphocyte ratio, D?Dimer, BUN, and BUN/Cr ratio
were higher in patients with AIS following COVID?19 infection.
present with critical COVID?19 (P = 0.004), had higher rates of dmission in the intensive care unit (P < 0.001), more duration of hospitalization (P < 0.001), and higher in?hospital mortality (P < 0.001). At the time of hospitalization, O2 saturation (P = 0.011), PH (P = 0.04), and HCO3 (P = 0.005) were lower in group A. White blood cell count (P = 0.002), neutrophil count (P < 0.001), neutrophil?lymphocyte ratio (P = 0.001), D?Dimer (P < 0.001), blood urea nitrogen (BUN) (P < 0.001), and BUN/Cr ratio (P < 0.001) were significantly higher in patients with AIS. Conclusion: Stroke in COVID?19 is multifactorial. In addition to onventional risk factors of ischemic stroke (age and cardiovascular risk factors), we found that patients with more severe COVID?19 are more prone to ischemic stroke. Furthermore, leukocyte count, neutrophil count, neutrophil?lymphocyte ratio, D?Dimer, BUN, and BUN/Cr ratio
were higher in patients with AIS following COVID?19 infection.
Keywords
Acute ischemic stroke, blood urea nitrogen, coronavirus disease 2019, D?dimer