In-Hospital Outcomes of Takotsubo Cardiomyopathy During the COVID-19 Pandemic: Propensity Matched National Cohort

Abstract

Takotsubo Cardiomyopathy (TTS) is an acute reversible left ventricular dysfunction with regional ballooning secondary to various physical or psychological triggers, including COVID-19. The impact of TTS on outcomes in COVID-19 patients is not well studied. The Nationwide in-patient sample database from 2019 to 2020 was utilized to identify TTS patients with and without COVID-19. Clinical Modification (ICD-10-CM) codes U07.1 and I51.81 were used as disease identifiers for COVID-19 and TTS, respectively. Multivariate logistic regression was performed to report adjusted odds ratios (aOR) and propensity score match (PSM) was done to compare outcomes among TTS patients with and without COVID. The primary outcome was in-hospital mortality. A total of 83,215 TTS patients for the period 2019-2020 were included in our study, of which 1665 (2%) had COVID-19. COVID-19 with TTS group had higher adjusted odds of in-hospital mortality (aOR 7.23, PSM 32.7% vs 10.16%, p = <0.001), cardiogenic shock; (aOR 2.32, PSM 16.7% vs 9.5%, P < 0.001) and acute kidney injury; (aOR 2.30, PSM 47.5% vs 33.1%, P< 0.001) compared to TTS without COVID-19. TTS hospitalizations with COVID-19 were associated with longer lengths of stay (12 ± 12 vs 7 ± 9 days) and higher total cost ($47,702 ± $67,940 vs $26,957 ± $44,286) compared to TTS without COVID. TTS with COVID-19 group had a higher proportion of males compared to TTS without COVID-19 group (37.8% vs 18.5%). TTS with COVID-19 group had a greater proportion of non-white race. The proportion of Blacks, Hispanics, and Asian/Pacific Islander was higher in the COVID-19 TTS group compared to TTS without COVID-19 group (12.9% vs 8.4%, 20.4% vs 6.5%, 5 vs 2.2%, respectively). TTS in the setting of COVID-19 illness has worse outcomes in terms of in-hospital mortality, cardiogenic shock, and acute kidney injury. Male sex and non-white race were more likely to be affected by TTS in the setting of COVID-19. The out-of-hospital morbidity and mortality in patients who suffered TTS during COVID-19 illness need further study. Studies are needed to provide mechanistic insights into the interaction between COVID-19 and TTS.