Heart wave tech may predict TAVR success

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Age 60-90 years. Confirmed diagnosis of severe Aortic Stenosis (AS) and a confirmed guideline-based indication for Transcatheter Aortic Valve Implantation (TAVI) by a multidisciplinary Heart Team, in accordance with the latest ESC/EACTS guidelines. (In the presence of Vmax ≥ 4.0 m/s, Mean Gradient ≥ 40 mmHg, or AVA ≤ 1.0 cm²; applicable primarily to all symptomatic patients, adopting a proactive approach regarding age limits and risk profiles. Guidelines recommend TAVI as the first-line therapy \[Class I\] for all patients aged 70 and older with anatomical suitability and a tricuspid valve structure, regardless of surgical risk. For patients under 70, TAVI is recommended when surgical risk is high or surgery is deemed unsuitable. In asymptomatic individuals, a decline in left ventricular ejection fraction \[LVEF\] below 55% \[not attributable to other causes\] constitutes a Class I indication for intervention. Early intervention \[Class IIa\] is considered for patients with preserved EF but high-risk markers such as very severe stenosis \[Vmax \> 5.0 m/s\], rapid progression \[increase \> 0.3 m/s/year\], significant NT-proBNP elevation \[\> 3 times the upper limit of normal\], or severe pulmonary hypertension. In cases of low-flow, low-gradient \[LFLG\] AS, the indication for TAVI arises if true-severe stenosis is confirmed via dobutamine stress echocardiography or CT calcium scoring \[Male ≥ 2000, Female ≥ 1200\]. All treatment decisions are finalized by a multidisciplinary Heart Team assessing anatomy, frailty, and patient preferences.) Written informed consent. Exclusion Criteria: * Active infection, uncontrolled systemic disease, active malignancy, or life expectancy \< 1 month. Pregnant or lactating patients. Pressure tracings with significant artifacts hindering analysis or uncontrolled arrhythmia (e.g., atrial fibrillation with rapid ventricular response). Any other condition deemed clinically unsuitable by the investigator.