Publications by authors named "John Raytis"
Objective: The American Society of Anesthesiologists (ASA) Physical Status (PS) Classification System defines perioperative patient scores ranging from 1 to 6 (healthy to brain dead, respectively). The scoring is performed and used by physician anesthesiologists and providers to classify surgical patients based on co-morbidities and various clinical characteristics. There is potentially a variability in scoring stemming from individual biases.
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- A study examined the link between perioperative β-blockade (use of beta-blockers) and the recurrence/metastasis of breast cancer in over 1,000 surgical patients.
- Research found that stage II patients using β-blockers had a lower risk of cancer recurrence, with a significant hazard ratio indicating a protective effect.
- The study also revealed that triple-negative brain-metastatic breast cancer cells have heightened β2-adrenergic receptors which, when activated, lead to increased cell growth and movement, effects that were countered by β-blockers like propranolol, suggesting they may help prevent metastasis.
Background And Objectives: The da Vinci Xi platform provides expanded movement of the arms relative to the base, theoretically allowing increased versatility in complex multi-field or multi-quadrant surgery. We describe the initial Xi experience in oncologic surgery at a tertiary cancer center.
Methods: One hundred thirty unique robot-assisted procedures were performed using the Xi between 2014 and 2015, 112 of which were oncology surgeries.