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Background: Postoperative anemia is prevalent in fast-track hip arthroplasty (THA) where patients are mobilized and discharged early, but whether anemia impairs functional recovery after discharge has not been adequately evaluated previously. This study aimed to evaluate whether postoperative anemia influenced recovery of mobility and quality of life (Qol) during the first 2 weeks after discharge from THA.Study Design and Methods: This was a prospective observational study in 122 THA patients more than 65 years of age. Mobility and Qol were assessed pre- and postoperatively by the 6-minute walk test (6MWT; primary outcome), the timed up-and-go test, and the FACT-anemia subscale. Twenty-four-hour mobility at home was assessed by activity monitoring on Days 1 to 6 after discharge. Hemoglobin (Hb) at discharge (HbD) and the Hb decrease from preoperatively (ΔHb) were compared to mobility and Qol the first 2 weeks after discharge using bivariate and multivariate linear regression.Results: Mean (±SD) HbD and ΔHb values were 11.1 (±1.4) and 2.8 (±1.2) g/dL and correlated weakly to 6MWT 2 weeks after discharge (r = 0.23 and r = -0.20 respectively; p < 0.05) but HbD levels were not correlated to other mobility or Qol measures. After adjustment for preoperative patient-related factors, HbD explained 6% (95% confidence interval, 0%-9%; p < 0.05) of the variation in 6MWT recovery.Conclusion: Despite a weak, but significant, correlation between postoperative Hb and the recovery of 6MWT, all other mobility and Qol measures were not influenced by postoperative Hb. Thus, moderate postoperative anemia has limited impact on early postdischarge functional recovery after fast-track THA. [ABSTRACT FROM AUTHOR]

Background Preoperative anemia has been associated with increased risk of allogeneic blood transfusion and postoperative morbidity and mortality. The prevalence of preoperative anemia and its association with postoperative outcomes has not previously been reported in relation to fast-track elective total hip arthroplasty ( THA) and total knee arthroplasty ( TKA). We aimed to evaluate the prevalence of preoperative anemia in elective fast-track THA and TKA and its association with risk of perioperative transfusion, prolonged length of hospital stay ( LOS), and postoperative readmission. Study Design and Methods This was a prospective observational database study with data obtained from six high-volume Danish fast-track surgical centers. Preoperative hemoglobin and patient demographics were collected prospectively using questionnaires while outcome and transfusion data were collected using national databases and patient charts. Adjusted risk estimates for transfusion, prolonged LOS, and all-cause readmission according to preoperative anemia status were obtained by multivariate logistic regression. Results A total of 5.165 THA or TKA procedures were included with a mean patient age of 67 ± 11 years and a median LOS of 2 (interquartile range, 2-3) days. A total of 662 patients (12.8%) had preoperative anemia according to World Health Organization classification. Preoperative anemia was associated with increased risk of receiving transfusion during admission (odds ratio [ OR], 4.7; 95% confidence interval [ CI], 3.8-5.8), increased risk of readmission within 90 days from surgery ( OR, 1.4; 95% CI, 1.1-1.9), and increased risk of LOS of more than 5 days ( OR, 2.5; 95% CI, 1.9-3.4) after adjustment for preoperative patient-related risk factors. Conclusion Preoperative anemia in elective fast-track THA and TKA is independently associated with transfusion and increased postoperative morbidity, supporting the need for preoperative evaluation and treatment. [ABSTRACT FROM AUTHOR]

Background Methods Results Conclusion Pre‐operative iron deficiency anaemia (IDA) is common in patients undergoing elective major abdominal surgery and is associated with increased risk of perioperative complications. However, widespread implementation of pre‐operative anaemia management is lacking. Guidelines recommend investigation of anaemia preferably 4–6 weeks before surgery to allow time for correction. However, this is not always feasible in abdominal cancer surgery with short time to surgery and may be influenced by concomitant chemotherapy. The objective of this study was to assess the efficacy of implementing a pre‐operative screening and treatment programme for IDA in elective abdominal cancer surgery patients, with short duration to surgery and concomitant use of chemotherapy.All patients scheduled for elective abdominal cancer surgery with IDA were included. Anaemia was defined according to the World Health Organization‐criteria and iron deficiency as a transferrin saturation <0.20. The primary outcome was change in haemoglobin (Hb) between iron infusion and surgery in patients receiving pre‐operative intravenous iron infusion.Of 178 diagnosed IDA patients 134 (75%) received intravenous iron, 103 pre‐operatively (58%) at median day 17 (interquartile range: 9–27) before surgery while 31 (17%) received post‐operative intravenous iron treatment. The pre‐operative Hb increased 0.89 g/dL (95% CI: 0.64–1.13, p < .001) compared to a decrease of 0.4 g/dL (95% CI: 0.19–0.58, p < .001) in 75 patients not treated pre‐operatively. Patients diagnosed with severe anaemia had the largest pre‐operative Hb increase. Iron infusion >2 weeks pre‐operatively resulted in a greater Hb increment of 1.13 g/dL (95% CI: 0.81–1.45) compared to iron infusion ≤2 weeks before surgery 0.48 g/dL (95% CI: 0.16–0.81). Hb increased by 0.64 g/dL (95% CI 0.19–1.21) in patients receiving chemotherapy ≤31 days prior to surgery.In patients scheduled for abdominal cancer surgery, including in patients with concomitant chemotherapy, pre‐operative IDA management is feasible and results in a significant pre‐operative Hb increase compared to patients not treated. On the day of surgery 25% patients treated pre‐operatively were no longer anaemic. [ABSTRACT FROM AUTHOR]

Hip and knee surgery is associated with a relatively large bleeding and a need for perioperative transfusion. Postoperative anaemia may delay recovery, but transfusion carries inherent risks. However, only few randomised controlled studies evaluating the effects of different transfusion triggers have been performed in orthopaedic surgery. The majority of these studies suffer from methodological weaknesses and have not been performed in a fast-track setting. Thus, large randomised studies evaluating a restrictive versus a liberal transfusion strategy in a procedure-specific setup are needed.

Exercise challenges cerebral autoregulation (CA) by a large increase in pulse pressure (PP) that may make systolic pressure exceed what is normally considered the upper range of CA. This study examined the relationship between systolic blood pressure (SBP), diastolic blood pressure (DBP), and mean arterial pressure (MAP) and systolic (V(s)), diastolic (V(d)). and mean (V(m)) middle cerebral artery (MCA) blood flow velocity during mild, moderate, and heavy cycling exercise. Dynamic CA and steady-state changes in MCA V in relation to changes in arterial pressure were evaluated using transfer function analysis. PP increased by 37% and 57% during moderate and heavy exercise, respectively (P < 0.05), and the pulsatility of MCA V increased markedly. Thus exercise increased MCA V(m) and V(s) (P < 0.05) but tended to decrease MCA V(d) (P = 0.06). However, the normalized low-frequency transfer function gain between MAP and MCA V(m) and between SBP and MCA V(s) remained unchanged from rest to exercise, whereas that between DBP and MCA V(d) increased from rest to heavy exercise (P < 0.05). These findings suggest that during exercise, CA is challenged by a rapid decrease rather than by a rapid increase in blood pressure. However, dynamic CA remains able to modulate blood flow around the exercise-induced increase in MCA V(m), even during high-intensity exercise.