Abstract
Introduction: Takotsubo Cardiomyopathy often presents very similarly to acute coronary syndromes (ACS). Although the gravity of the condition is being increasingly recognized, prognostic factors have been hardly established. We applied known near-term ACS mortality risk factors to determine their prognostic value in takotsubo cardiomyopathy. Methods: We analyzed the National Inpatient Sample database for 2021. Inclusion criteria were Principal Diagnosis of Takotsubo Syndrome (ICD 10 code "I5181") and age 18 years or more. Different comorbidities, age, and gender were analyzed in these patients, and the primary outcome was inpatient mortality. Univariate logistic regression was used to test the association of each factor with mortality, and multivariate logistic regression was then used to test for independent predictive value. Analyses were performed using STATA/BE 18.0. Significance was set at 0.05. Results: 9109 admissions for takotsubo syndrome were identified (10.3% males and 89.7% females) with a mean age of 67 years and an inpatient mortality rate of 2.31%. On univariate regression, age (OR 1.04; p=0.013), heart failure (OR 3.2; p<0.001), atrial fibrillation (OR 3.12; p<0.001) and chronic kidney disease (OR 3.54; p<0.001) were significant predictors of mortality while gender(0.389), diabetes(0.132), hypertension (0.052), smoking (0.617), nicotine dependence (0.075), hypercholesterolemia (0.686), obesity (0.728), history of stroke (0.068) and history of myocardial infarction (0.613) were not significantly associated with mortality. On multivariate regression, only heart failure (OR 2.8; p=0.007) and chronic kidney disease (OR 2.34; p=0.032) were independently associated with inpatient mortality. Conclusion: Our findings are mostly congruent with the existing literature regarding this condition. Pre-existing heart failure and a history of chronic kidney disease are poor prognostic factors in patients presenting with Takotsubo cardiomyopathy. Further large-scale studies are required to validate our findings.
Published Version
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