Primary Outcome
Analysis of the LVEF data was performed for the entire dataset as well as for each implantation location group (Figure 1). The mid septum group shows the greatest variation, while the high septum placement had the least variation, although that group also had the lowest population size. There are a few data points on the higher and lower LVEF’s that could be considered outliers in this dataset. Therefore, secondary analysis was run with those points removed to see if results were any different, but the results were not altered. There was one subject whose age was 14 and whose ejection fractions before and after were 76 and 77 respectively. Although this patient’s LVEF was dissimilar to the rest of the study population which consisted of elderly adults, the focus of this study was to determine the incidence of PICM after LP implantation, so the patient was included.