Pulse Oximeter Changes With Sentinel Lymph Node Biopsy in Breast Cancer

摘要: Hypothesis The changes reported with pulse oximetry after the injection of isosulfan blue for sentinel lymph node identification in patients breast cancer are consistent and predictable. Design Retrospective study. Setting University hospital. Patients Methods complete anesthesia records 92 who underwent biopsy intraparenchymal were reviewed. study extended from January 1999 to February 2000. operations all performed patient received general anesthesia. We injected 5 mL into tissue surrounding tumor. data reviewed included preinjection oximeter saturation readings postinjection values continuing until returned baseline levels postanesthesia care unit. Main Outcome Measures Changes oxygen before blue. Results Isosulfan interfered measurements a substantial time—as much as 195 minutes. mean time maximum change reading was 35 median decrease 5%. 11%. Conclusions Although can be substantial, their course appears predictable, therefore most otherwise healthy normal pulmonary function, invasive monitoring is not necessary.