Intra-aortic balloon pump in patients with acute advanced heart failure. Results from a single-center study

Abstract

Abstract Funding Acknowledgements Type of funding sources: None. Introduction Patients with advanced heart failure are frequently referred to cardiac intensive care unit (CICU) for hemodynamic support. Despite optimum pharmacological therapy many of these patients persist in critical condition, demanding short term circulatory support until recovery or heart transplantation. Intra-aortic balloon pump is commonly used in patients with advanced heart failure in order to stabilize hemodynamically compromised patients as bridge to decision for further therapies. Purpose To investigate the outcomes of patients with acute advanced heart failure referred to cardiac intensive care unit and supported with short term mechanical support. To explore the hemodynamic effects of the Intra-aortic balloon pump therapy in these patients. Material & Method We retrospectively analyzed the data from 104 patients with acute advanced heart failure (either as worsening of existing symptoms of chronic HF or as first onset of HF). All patients had severe left ventricular dysfunction, which was frequently associated with right ventricular dysfunction and increased NT pro BNP levels. Demographic data were collected including co-morbidities. Laboratory data included NT-pro BNP, total bilirubin, serum creatinine, urea and baseline e GFR (MDRD Formula). All patients received IABP support and underwent right heart catheterization. Measurements were made before and after the insertion of the IABP. The study has been approved by the Scientific Committee and the Ethics Committee of the Hospital. Results The mean age of the sample was 44 ± 12 years. 76 patients (73, 08%) were male. 20 patients (19, 23%) were of ischemic etiology. The median time on IABP support for the entire cohort was 13 days (3 – 41, 25). There was statistically significant decrease in the NT-pro BNP levels (p<0, 0001). There was improvement in renal function (e GFR (p<0, 0001) and urea levels (p< 0,001)). There was statistically significant improvement in the right heart catheterization measurements (decrease of the right atrium pressure (p <0, 0001), of the PA pressure (p<0,001), and of the pulmonary capillary wedge pressure (p<0,001)). IABP provided clinical stabilization in 88 patients (87, 62%), that is completed pre-transplant evaluation and proceeded in surgery with permanent mechanical support or heart transplantation or transfer to regular ward, while 16 patients (15, 38%) ended up in CICU while being on IABP. Conclusions In this single center study the use of IABP improved the laboratory findings and the hemodynamic status of patients admitted in the cardiac intensive care unit with acute advanced heart failure. It was an effective method of managing patients as bridge to decision for further therapies.