Outcomes of cancer patients with takotsubo cardiomyopathy.

Abstract

e18101 Background: Chemotherapy induced cardiomyopathy is an important complication of some chemotherapeutic agents. The stress of a cancer diagnosis and ongoing chemotherapy may contribute to cardiac morbidity in these patients. The burden of Takotsubo Cardiomyopathy (TCP) in cancer patients is unknown. The incidence of TCP and related outcomes in cancer patients was investigated in this study. Methods: The 2007-2013 National Inpatient Sample (NIS) was analyzed for patients with a prior and new diagnosis of TCP with and without malignancy. Risk factors for mortality were adjusted for associated conditions by multivariable logistic regression analysis. Results: From 2007 through 2013, an estimated 122,750 adults were admitted with a diagnosis of TCP. In 2013, the incidence of admissions in US of patients with coexisting TCP and malignancy was 1.13%. Admissions in 34,957 patients were for a primary diagnosis of TCP with 91.7% females; overall, 665 (2.1%) had solid organ cancer, 237 (0.74%) had hematological malignancy and 354 (1.11%) had metastatic cancer. Patients admitted for TCP with coexisting malignancy had a significantly higher mortality (13.8% vs. 2.9%, p < 0.0001), length of stay (7 vs. 4 days, p < 0.0001) and total charges ($29291 vs. $ 36231, p < 0.0001), compared to those with no malignancy. In patients with a primary diagnosis of TCP and without any underlying malignancy, males had a higher mortality (4.02% vs. 1.03%, p < 0.0001) whereas there was no gender difference in mortality in those with coexisting malignancy (6.25% vs 6.45%, p = 0.965). On multivariable logistic regression analysis, risk factors associated with mortality were solid cancer (OR 3.43, p = 0.008), stroke (OR 18.33, p < 0.0001), venous thromboembolic disease (OR 4.52, p = 0.004), malnutrition (OR 2.41, p = 0.006) and heart failure (OR 1.918, p = 0.004). Conclusions: Outcomes are significantly worse in patients with TCP and solid malignancy. Hence, this patient population must be regarded as high-risk and early diagnostic consideration for TCP is warranted. Early intervention may help lower mortality, decrease resource utilization and reduce the health care costs in these patients.