Prognostic Value of Frailty in Patients With Takotsubo Cardiomyopathy.

BACKGROUND

There is scarce data on the prognostic value of frailty in patients with Takotsubo cardiomyopathy (TCM). This study aimed to assess the association between frailty and in-hospital outcomes in patients with TCM.

METHODS

Adult admissions with TCM were included using the 2016-2019 National Inpatient Sample database. The primary outcome was in-hospital mortality and secondary outcomes included cardiogenic shock, in-hospital cardiac arrest, stroke/transient ischemic attack (TIA), length of hospital stay, and total charges. Frailty was assessed using the hospital frailty risk score (HFRS), and admissions were divided into two groups: low risk and intermediate/high risk of frailty. Logistic regression was used to estimate odds ratios (OR) with their 95% confidence intervals (CI).

RESULTS

A total of 32 360 patients were included; the median age was 67 (58-76) years and 90% were female. The median HFRS was 2.6 (1.1-5.3). In the adjusted models, in-hospital mortality was significantly higher in the intermediate/high risk of frailty group (OR 3.60, 95% CI 2.16-6.02) compared to the low-risk group. Similarly, admissions with intermediate/high risk of frailty had a significantly higher risk of cardiogenic shock (OR 3.66, 95% CI 2.77-4.80), in-hospital cardiac arrest (OR 2.57, 95% CI 1.55-4.24), and stroke/TIA (OR 5.68, 95% CI 3.51-9.20). There was a significantly higher hospital charges and length of hospital stay in the intermediate/high-risk group. In the restricted cubic spline regression models, the frailty score was nonlinearly associated with all outcomes.

CONCLUSIONS

Our results suggest that frailty is useful as a prognostic factor for in-hospital events in patients with TCM.