Validation of the SentiCor-300 Continuous Noninvasive Blood Pressure

To compare continuous arterial pressures obtained from the SentiCor-300 with direct intra-arterial blood pressure measurements at various stages of anesthesia (such as induction, laryngoscopy, maintenance, emergence, and recovery) and after emergence in supine position.

Inclusion Criteria:Clinical indication for arterial catheter insertion;Age ≥18 years;American Society of Anesthesiologists (ASA) physical status class ≤3;Enrollment will be adjusted as necessary so the final population includes at least 40% men and 40% women;Planned length of surgery >60 minutes;Anticipated supine positioning;Anticipated initial recovery in the post-anesthesia care unit.Exclusion criteria:Severe peripheral vascular disease;Surgery that involves manipulation of large arteriesBypass surgeryPositive Allen's testInability to insert a catheter into an upper extremity artery;Patients with an arterial-venous shunt for hemodialysis;Inability to measure NIBP on the arm with the arterial catheter;Atria l fibrillation;Body Mass Index (BMI) >35kg/m2;Esophageal or nasopharyngeal pathology, coarctation of the aorta;Emergency surgery.Surgery which involves manipulation of major arteries