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Percutaneous coronary intervention (PCI) is establishing as the last remaining revascularization option in an increasing number of patients affected by complex coronary artery disease not suitable for surgery. Over the past decade, percutaneous left ventricular assist device (pLVAD) has increasingly replaced intra-aortic balloon pump to provide hemodynamic support during such non-emergent complex high-risk indicated procedures (CHIP) averting the risk of circulatory collapse and of adverse events in long lasting and/or complicated procedures. This review article aims to report the key factors to define CHIP, to summarize the available pLVAD which have CE mark for temporary mechanical LV support and to discuss the rationale of their use in this subset of patients. Based on the expertise of the Italian Society of Interventional Cardiology working group, with the endorsement from Spanish and Portuguese Society of Interventional Cardiology working groups, it will provide several practical suggestions in regards to the use of pLVAD in different clinical CHIP scenarios.

Percutaneous coronary intervention (PCI) is establishing as the last remaining revascularization option in an increasing number of patients affected by complex coronary artery disease not suitable for surgery. Over the past decade, percutaneous left ventricular assist device (pLVAD) has increasingly replaced intra-aortic balloon pump to provide hemodynamic support during such non-emergent complex high-risk indicated procedures (CHIP) averting the risk of circulatory collapse and of adverse events in long lasting and/or complicated procedures. This review article aims to report the key factors to define CHIP, to summarize the available pLVAD which have CE mark for temporary mechanical LV support and to discuss the rationale of their use in this subset of patients. Based on the expertise of the Italian Society of Interventional Cardiology working group, with the endorsement from Spanish and Portuguese Society of Interventional Cardiology working groups, it will provide several practical suggestions in regards to the use of pLVAD in different clinical CHIP scenarios.

Background The fully retrievable and repositionable Lotus Valve System uses a unique mechanical expansion mechanism. Balloon aortic valvuloplasty (BAV) is recommended before valve deployment. There are no studies focusing on feasibility and efficacy of Lotus Valve implantation without previous BAV. Methods and results Thirty consecutive patients (63.3% female; mean age, 80±6.2years) underwent transcatheter aortic valve replacement (TAVR) with the Lotus Valve without preparatory BAV. Mean baseline aortic valve area was 0.41±0.14cm 2 /m 2 ; mean transvalvular gradient was 50.2±16.2mmHg. All patients were successfully implanted, with 96.6% device success (VARC-2 definition) and 0% intra-procedural mortality. Partial and full valve repositioning were performed in 11 (36.7%) and 2 (6.7%) cases, respectively. Mean 30-day transprosthetic gradient was 11.3±3.6mmHg, with an effective aortic orifice area of 1.0±0.2cm 2 /m 2 , and more than mild paravalvular leakage (PVL) in only one patient. At 30days, cardiac mortality was 3.3%, and 96.3% of subjects were NYHA Class I or II. The rate of life-threatening bleeding was 10%; one patient experienced disabling stroke. Ten patients underwent new pacemaker implantation (38%). Conclusions TAVR with the mechanically expandable Lotus Valve seems feasible without performing preparatory BAV. Valve hemodynamics at 30-days were favorable, and clinical outcomes were similar to studies employing routine preparatory BAV.