In this week’s episode we delve into the evidence for digoxin reducing mortality in the interstage period following Norwood palliation for HLHS. We speak with Assistant Professor of Pediatrics at the University of Pennsylvania, Dr. Michael O’Byrne about a recent analysis of the PHIS database using the relatively novel “preference based instrumental variable” approach to analysis of an observational data set. How does this approach allow for possible proof of causation of effect of a variable? Why might digoxin reduce mortality in the HLHS patient following stage I palliation? Are there patients in which the impact of this agent might be greater than others? These are amongst the many questions reviewed this week with Dr. O'Byrne.
https://doi.org/10.1016/j.ahj.2023.05.005