Aortic Stenosis (Treated With TAVI)

This is a post-market, prospective, multicenter, single-arm post market study sponsored by Pi-Cardia Ltd. The ShortCut is indicated for use as a splitting device of bioprosthetic aortic valve leaflets to facilitate valve-in-valve procedures for subjects at risk for coronary obstruction. The ShortCut has been cleared by FDA under DEN240017, and this study is a post-market evaluation of the ShortCut per the FDA cleared indications for use. The objectives of the study are: 1. To collect real-world data on the use of ShortCut to split bioprosthetic aortic valve leaflets prior to TAVR in subjects at risk for coronary obstruction. 2. To collect real-world data on coronary patency following ShortCut and ViV TAVR procedures in subjects who are at risk for coronary artery ostium obstruction. Data will be collected, where available, from the subjects' medical records at the following time-points: baseline, index procedure, pre-discharge, and 30 days post-procedure.

Use of the Transcatheter Aortic Valve Replacement Surgical Assist System and its Disposable Kit in Patients With Severe Aortic Stenosis to Evaluate the Safety and Efficacy of the Transcatheter Aortic Valve Replacement Surgical Assist System and its Disposable Kit for Use as an Adjunct to Transcatheter Aortic Valve Replacement

The objective of this study is to compare the safety and effectiveness of the F2 Cerebral Protection System (CPS) to a standard of care control group in patients undergoing Transcatheter Aortic Valve Replacement (TF TAVR)

Transcatheter aortic valve replacement (TAVR) has revolutionized the treatment of patients with aortic valve disease. TAVR is a less invasive treatment compared to the conventional surgical approach through median sternotomy. Patients selected for this procedure often have a profile associated with multiple comorbidities which predispose them to certain complications. TAVI procedures were initially performed under general anesthesia. However, due to improved procedure times and anesthetic techniques, sedation has become the current trend to preform them. When sedation for these procedures requires deep planes, hypoxia is more likely to occur due to respiratory depression, apnea, or airway obstruction. This is even more common in TAVR patients population, as obesity, sleep apnea, elevated ASA classification, advanced age, and combined cardiorespiratory disease are highly prevalent. For all these reasons, TAVR constitutes a risky procedure, presenting a profile of patients undergoing this procedure that can also be considered high risk. The provision of supplemental oxygen through nasal cannulae or face masks can prevent the development of hypoxia. Unfortunately, non-humidified nasal oxygen cannot exceed 2-5 L/min without causing damage to the nasal mucosa, and the percentage of oxygen delivered through variable-flow face masks is unpredictable. On the other hand, high-flow nasal oxygen therapy (HFNO) can provide humidified gas flow rates of up to 70 L/min through specially adapted nasal cannulae and reliably deliver oxygen concentrations between 21% and 100%. The use of HFNC could be justified in this context and could improve the outcomes and safety of these procedures, increasing oxygen content and minimizing hypercapnia. The study's hypothesis is HFNO will prevent hypoxemia and control hypercapnia during sedation for transcatheter aortic valve implantation (TAVI) better than conventional oxygen theraphy. Clinical and serological biomarkers of tissue injury will decrease with the use of HFNO. Clinical complications will decrease with the use of HFNO. The study population would be all patients \>18 years of age undergoing TAVI procedure and who agree to participate in the study in 8 centers in Barcelona.

Pace maker implantation after the procedure of TAVR can be estimated at 15% of patients. However, some studies have shown that the conduction disturbances after TAVR could resolve over time, and that roughly between one- and two-thirds of patients who required a permanent pace maker implantation post TAVR were not found to be dependent at subsequent follow-up. This study aims to evaluate a cohort of patients permanently implanted with a pacemaker post-TAVR for high-grade conductive disorders and to describe the prevalence of effective pacemaker stimulation at 1 year follow-up. Secondary objectives include the evaluation of the prevalence of effective stimulation 3 months after implantation of the pace maker , description of the types of conductive disorders associated with atrial and/or ventricular stimulation, description of the initial indication for pacemaker implantation, description of the characteristics of the population with or without stimulation dependency. The objective is to better rationalize indication of permanent stimulation after TAVI