Abstract
ObjectiveThis study assesses the effect of malnutrition on the in-hospital outcomes of patients with takotsubo cardiomyopathy (TCM). MethodsWe performed a retrospective cohort analysis using the International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) codes for a primary diagnosis of TCM from the National Inpatient Sample database (2016–2018). A concurrent diagnosis of malnutrition was then identified, and these patients were divided into the malnutrition group and non-malnutrition group. To adjust for underlying risk factors, a multivariable logistic regression model was employed followed by a propensity score matching analysis for the malnutrition and the non-malnutrition group. We then compared the in-hospital outcomes between these two groups. ResultsAmong 4733 patients with a primary diagnosis of TCM, 221 (4.7%) patients with TCM were found to be malnourished. After propensity score matching, patients with TCM with malnutrition were found to have a higher mortality rate (8.3% versus 2.0%, P < 0.001), a higher rate of complications including cardiogenic shock (16.1% versus 7.0%, P < 0.001), ventricular arrhythmia (8.8% versus 3.9%, P = 0.01), acute kidney injury (24.9% versus 10.6%, P < 0.001), and acute respiratory failure (32.7% versus 17.8%, P < 0.001). There was no statistically significant difference in the incidence of cardiac arrest between the two groups. Malnutrition of severe degree was associated with a sevenfold (odds ratio 6.8, 95% confidence interval, 3.2–13.4) increased risk of in-hospital mortality compared with those without malnutrition. ConclusionPatients with malnutrition who were admitted with TCM were associated with higher rates of in-hospital mortality and complications compared with those without malnutrition.
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