Key result
Valve orientation significantly impacted microembolization in a porcine model, with the Medtronic Hall valve showing 0.8-1.7 HITS/min in the optimum position versus 43-66 HITS/min in the worst.
Why the study?
Does valve orientation affect the incidence of high intensity transient signals (HITS) in pigs with mechanical aortic valves?
Does valve orientation affect the incidence of high intensity transient signals (HITS) in pigs with mechanical aortic valves?
Valve orientation significantly impacts the incidence of microembolization (HITS) in a porcine model of mechanical aortic valve replacement, with the Medtronic Hall valve showing negligible HITS in the optimum orientation.
No takes yet. Share an insight, caveat, or question.
Valve orientation effects on microembolization should not yet change practice; porcine data leave open need for human confirmation.
Kleine et al. (2000) studied Mechanical aortic valve replacement (n=4). Valve orientation vs. Worst orientation was evaluated on High intensity transient signals (HITS) count per minute. Valve orientation significantly impacted microembolization in a porcine model, with the Medtronic Hall valve showing 0.8-1.7 HITS/min in the optimum position versus 43-66 HITS/min in the worst.
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