Changes in red blood cell transfusion practice during the past two decades: a retrospective analysis, with the Mayo database, of adult patients undergoing major spine surgery.

BACKGROUND: Others have reported significant changes in red blood cell (RBC) transfusion practice during the past two decades during knee, hip, prostate, and carotid surgery. Similar data for patients undergoing major spine surgery, however, are not available. STUDY DESIGN AND METHODS: After institutional review board approval, adult patients undergoing elective major spine surgery were stratified into one of two transfusion-related groups: 1) 1980 to 1985 (i.e., before human immunodeficiency virus screening, early practice group; n = 699) or 2) 1995 to 2000 (i.e., late practice group; n = 610). RESULTS: Patients in the late practice group were older, had greater numbers of preoperative coexisting diseases (e.g., hypertension, cardiac dysrhythmias, coronary artery disease, prior myocardial infarction, diabetes mellitus, renal disease, cerebrovascular disease, and asthma), and were exposed to longer operations (p < 0.01 for each variable). Over time, allogeneic RBC administration significantly decreased, whereas autologous and intraoperative autotransfusion significantly increased. Compared to the early practice group, all perioperative Hb concentrations were significantly lower than the late practice group, yet no significant difference in major morbidity or mortality was observed between groups. CONCLUSION: In this retrospective analysis, significantly lower acceptable perioperative Hb concentrations were observed in older patients having substantially worse baseline comorbidity and exposed to longer major spine operations, without significant change in the incidence of perioperative morbidity or mortality.

Current transfusion practices of members of the american society of anesthesiologists: a survey.

BACKGROUND: The last published survey of transfusion practices among members of the American Society of Anesthesiologists (ASA) was conducted in 1981. The ASA Committee on Transfusion Medicine conducted a new transfusion survey in 2002. METHODS: The survey was mailed to 2,500 randomly selected active ASA members. The previous survey was modified to incorporate questions based on the ASA Practice Guidelines for Blood Component Therapy. The chi-square test was used for comparisons. Two-tailed P values of 0.05 or less were considered as nonchance differences. RESULTS: A total of 862 survey responses were completed by anesthesiologists who provided or directly supervised anesthesia for patients who may have required transfusion. In a given week, 62% rarely or never transfused 3 or more units of blood to the same patient. The percentage of anesthesiologists who responded that it is never or rarely (1% or less of the time) necessary to cancel elective surgery because of unavailability of blood products was 96% in 2002. In 1981, 92% responded that it was rarely necessary, and 8% said that it was occasionally necessary. The percentage of anesthesiologists who required patients undergoing elective surgery to have a hemoglobin concentration of at least 10 g/dl decreased from 65% to 9% (P < 0.001). Before intraoperative erythrocyte transfusion, 89% of respondents performed hemoglobin or hematocrit determinations routinely or sometimes. Intraoperative autologous transfusion equipment availability increased from 39% to 95% (P < 0.001). Awareness of the ASA Guidelines was 72%. CONCLUSIONS: Transfusion practices have changed considerably since 1981. Current transfusion practices are, in general, consistent with the ASA Guidelines.

Recruitment of house staff into anesthesiology: a re-evaluation of factors responsible for house staff selecting anesthesiology as a career and individual training program.

STUDY OBJECTIVE: To reexamine, in a follow-up to our first study, those factors responsible for house staff (i.e., residents and clinical fellows) selecting anesthesiology as a career and a specific training program, as well as house staff satisfaction with various educational aspects of our training program, and their perceptions of the future for graduating anesthesiology trainees. DESIGN: Survey questionnaire of 77 house staff at the Mayo Clinic during the 2000 to 2001 academic year. SETTING: Academic medical center. MEASUREMENTS: A cross-sectional analysis was conducted using a questionnaire to survey 77 house staff enrolled in the anesthesiology training program at Mayo Clinic, Rochester, MN during the 2000 to 01 academic year. All responses were anonymous. Data were compared between time epochs using an f-exact test. A p-value