ABSTRACT
Background: COVID-19 tends to have a harsher course in the elderly population, which can include the development of arrhythmias, including supraventricular tachycardia (SVT). Due to lack of sufficient data, we studied baseline patient characteristics, comorbidities, and outcomes of SVT in octogenarians admitted with COVID-19, using the 2020 National Inpatient Sample (NIS). Objective(s): We aimed to study the patient characteristics and outcomes of SVT in octogenarians admitted with COVID-19, using the 2020 National Inpatient Sample (NIS). Method(s): Octogenarians (ages 80-89 years, inclusive) with COVID-19 were recruited from the 2020 NIS (April 1st 2020 - December 31st 2020). A diagnosis of SVT was identified via the ICD-10 code "I47. 1". Patient characteristics that can influence the presence of SVT were identified via logistic regression models. The adjusted odds ratios (aOR) having cardiogenic shock or mortality among COVID-19 positive octogenarians with SVT were also explored. Result(s): Our study consisted of 240570 octogenarians who tested positive for COVID-19. 2.2% of them (5250 cases) also had a diagnosis of SVT during their hospitalization. Among them, Females (aOR 0.919, 95%CI 0.868-0.973, p<0.01) were more likely to develop SVT. Racial disparities were also observed as Blacks (aOR 1.234, 95%CI 1.137-1.338, p<0.01) had higher odds of having SVT, whereas Hispanics (aOR 0.898, 95%CI 0.819-0.984, p=0.021) had lower odds compared to Whites. Comorbidities such as chronic pulmonary disease (aOR 1.106, 95%CI 1.037-1.179, p<0.01), and heart failure (aOR 1.122, 95%CI 1.053-1.195, p<0.01) also led to higher odds of SVT. Lower odds were seen among those with diabetes (aOR 0.852, 95%CI 0.802-0.905, p<0.01), obesity (aOR 0.839, 95%CI 0.764-0.921, p<0.01), or smoking history (aOR 0.892, 95%CI 0.835-0.954, p<0.01). The use of mechanical ventilation (aOR 2.829, 95%CI 2.638-3.034, p<0.01) or non-invasive ventilation (aOR 1.755, 95%CI 1.615-1.907, p<0.01) showed higher odds of developing SVT. Finally, patients with SVT had increased risk of cardiogenic shock (aOR 1.510, 95%CI 1.206-1.891, p<0.01) and mortality (aOR 1.166, 95%CI 1.085-1.253, p<0.01). Conclusion(s): Multiple factors influenced the presence of SVT among octogenarians who had COVID-19. SVT in these patients was associated with higher incidences of cardiogenic shock and mortality. Additional focus targeting patient care and further research to better understand the mechanisms behind these variations may help improve outcomes. [Formula presented]Copyright © 2023