Patel NJ, et al. - In this observational analysis, data from the Nationwide Inpatient Sample (NIS) database was used to analyze time-based trends in the use of mechanical circulatory support (MCS) in ventricular tachycardia/ventricular fibrillation (VT/VF) in-hospital cardiac arrest. A total of 151,628 hospitalizations with VT/VF IHCA were included, with receipt of MCS in 14,981 (9.9%). Factors related to MCS use and survival to discharge were determined using multivariable analysis. Findings revealed a significant increase in the use of MCS post-VT/VF IHCA from 2008 to 2014. The most commonly utilized MCS was intra-aortic balloon pump (IABP). In both MCS and non-MCS groups, an increase in the survival to hospital discharge was observed.