Combined Impella and IABP support in sheep with induced myocardial infarction increased coronary artery flow by 33% and decreased the oxygen demand-supply ratio by 25% compared to Impella alone.
Some patients in need of hemodynamic support do not respond to intra-aortic balloon pump (IABP) therapy. Hemodynamic stability can then be obtained by a more potent cardiac assist device, like the Impella catheter pump. Whether additional IABP support additional to Impella support can provide more optimal hemodynamic myocardial conditions is examined in this study. Seven sheep were implemented with IABP and Impella. An acute myocardial infarction was induced. Hemodynamic performance was assessed during baseline, during Impella support and IABP support individually, and during the combined Impella plus IABP support. The Impella support provided a reduction of afterload with 30% and an increase of coronary artery flow with 47%. The IABP increased coronary artery flow (13%), carotid artery flow (16%), and aortic ascending blood pressure (6%); a similar (but stronger) effect was provided when using the IABP support additional to Impella support and, respectively, increases of 33, 21, and 19% were established. The oxygen demand-supply ratio decreased by 25% due to the extra use of the IABP. A combination of IABP and Impella provides the most optimal hemodynamic myocardial conditions compared to either stand-alone support.
Sauren et al. (Wed,) conducted a other in Acute myocardial infarction (n=7). Combined Impella and Intra-aortic Balloon Pump (IABP) support vs. Impella alone and IABP alone was evaluated on Hemodynamic performance (coronary artery flow, carotid artery flow, aortic ascending blood pressure). Combined Impella and IABP support in sheep with induced myocardial infarction increased coronary artery flow by 33% and decreased the oxygen demand-supply ratio by 25% compared to Impella alone.
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