Inclusion Criteria:  Male or female ≥18 years of age Diagnosis of severe native valve aortic stenosis Meets the standard of care indications to undergo TAVR procedure (aortic valve area <1.0 cm2 or mean pressure gradient >40 mmHg or peak velocity >4.0 m/s or aortic valve area index <0.6). Provided informed consent.  Exclusion Criteria:  History of prior aortic valve replacement Pre-existing moderate to severe aortic regurgitation Lacking pre-procedure echocardiogram Patients planning to undergo multiple valve replacements simultaneously Intraoperative arrhythmia Intraoperative hemodynamic instability Intraoperative complication during initial inflation (such as: aortic dissection, coronary artery occlusion, coronary artery dissection) At the discretion of the principal investigator, any reason that the potential subject may be unfit for participation, such as frailty.