Blood Transfusion Applications in Hip Replacements
Condition: Blood Transfusion; Hip Replacement; Anesthesia Management
Study type: Observational

Summary: 
      Introduction and Aim In the intraoperative or postoperative period of hip replacement
      surgeries, approximately 46% of patients receive erythrocyte transfusion. 'Patient blood
      management' protocols have been established in order to reduce the frequency of perioperative
      surgical bleeding and transfusion. The aim of this study is to evaluate the patients who
      underwent hip replacement by the same experienced surgeon; to evaluate retrospectively in
      terms of patient characteristics, surgical and anesthesia management, blood transfusion
      frequency.

      Methods The characteristics of patients who underwent hip replacement (total hip replacement,
      revision hip replacement, partial hip replacement) operation by the same experienced surgeon
      between 2010-2022 at Baskent University after the approval of Baskent University Medical and
      Health Sciences Research Board, results will be analyzed retrospectively through
      perioperative follow-up forms and review of patient files.

      Expectations and scientific contributions Preparing patients for surgery, determining the
      causes of blood loss during and after surgery and creating preventive strategies are
      important for all operations, especially hip replacement surgeries. While determining the
      strategies, the main aim should be to see the pre-, intra- and post-operative period as a
      whole, to determine the transfusion risks according to the comorbidities and anemia of the
      patients, and to determine the anesthesia and analgesia managements that reduce blood loss in
      the intraoperative and postoperative periods.
    

Detailed description: 
      Introduction and Aim Hip replacement surgeries are among the operations whose frequency is
      increasing in our country and in the world. In these operations, procedures such as soft
      tissue dissection, exposing the hypervascular metaphysis and bone resection cause acute blood
      loss and continue in the form of leakage in the postoperative period. It has been reported
      that the rate of blood transfusion in hip operations in the United States is between 18-68%.
      There are studies reporting that erythrocyte transfusion rate approximately 46% of these
      cases in the intraoperative or postoperative period. Various complications may develop in
      patients during or after blood transfusion. These complications include local or systemic
      infections, venous thromboembolic events, allergic reactions, circulatory overload,
      transfusion-induced acute lung injury, morbidity, mortality, and increased hospital stay. In
      addition, a significant increase in cost can be seen. It is thought that the amount of
      bleeding varies according to the duration of the operation, the experience of the surgeon,
      and the type of surgery. Therefore, it is important for patient safety to reduce surgical
      bleeding and avoid transfusion applications as much as possible.

      "Patient blood management" has been defined as, to reduce the frequency of perioperative
      surgical bleeding and transfusion. Perioperative patient blood management practices,
      correction of preoperative anemia, autologous blood donation, discontinuation of blood
      thinners, acute normovolemic hemodilution, use of tranexamic acid, regional anesthesia,
      controlled hypotension, avoidance of hypothermia, appropriate fluid management, meticulous
      surgery, appropriate hemostasis, patient position, postoperative drain strategy. 'Patient
      blood management' measures are actively applied in hip replacement surgeries, which are one
      of the major orthopedic surgeries.

      The aim of this study is to evaluate the patients who underwent hip replacement by the same
      experienced surgeon in this center; to evaluate retrospectively in terms of patient
      characteristics, surgical and anesthesia management, blood transfusion frequency.

      Methods The characteristics of patients who underwent hip replacement (total hip replacement,
      revision hip replacement, partial hip replacement) operation by the same experienced surgeon
      between 2010-2022 at Baskent University after the approval of Baskent University Medical and
      Health Sciences Research Board, It will be analyzed retrospectively through perioperative
      follow-up forms and review of patient files.

      From preoperative records; Demographic data (Age, sex, height, body weight), diagnoses (Hip
      arthrosis, hip revision, hip fracture, congenital hip dislocation, infected hip replacement
      revision), American Society of Anesthesiologists Physical Condition Classification (ASA),
      co-morbidities (Hypertension, diabetes, chronic kidney failure, hepatopathy, inflammatory
      disease), smoking, alcohol, antiplatelet/anticoagulant, nonsteroidal anti-inflammatory use
      (NSAII), opioid, herbal medicine use, antiplatelet cut-off time compliance, hemoglobin (Hb),
      hematocrit (Htc), leukocytes, thrombocyte, activated partial thromboplastin time (APTT),
      prothrombin time (PTZ), international normalized ratio (INR), preoperative erythrocyte (ES)
      transfusion/amount.

      From intraoperative records; Year of operation, mallampati score, type of operation, duration
      of operation, whether emergency or elective, duration of anesthesia, type of anesthesia,
      intraoperative blood pressure (systolic and diastolic), heart rate, peripheral oxygen
      saturation, amount/type of fluid administered, ES transfusion/ amount, Hb when transfused,
      drugs used for anesthesia and analgesia and their amount, amount of blood in the aspirator,
      administration of tranexamic acid, amount of intraoperative urine.

      From the postoperative records; Hb/Htc values, ES transfusion/amount/day of administration,
      use of drain, amount of blood in the drain, amount of postoperative urine, intensive care
      unit admission, initiation of anticoagulants, early and late complications (Atrial
      fibrillation, pneumonia , renal failure, prosthesis infection, allergic reactions,
      nausea-vomiting), postoperative analgesia (Epidural/intravenous patient-controlled analgesia,
      opioid and NSAID use), Hb, urea, creatinine values at postoperative 6th and 12th hours and at
      discharge, iron preparation use, The number of hospitalization days and the mortality within
      7 days will be recorded and the data will be compared.

      Statistical analysis Statistical analysis will be performed using SPSS (SPSS Inc. Chicago,
      Illinois, USA) version 20.0 of the statistical program. Descriptive statistical methods
      (frequency, percentage, mean, standard deviation) will be used while evaluating the study
      data. The Kolmogorov-Smirnov test will be used to evaluate the conformity of the data of the
      patients with and without ES transfusion to normal distribution. T-test will be used in the
      analysis of data suitable for normal distribution, Kruskal-Wallis test or Mann Whitney U test
      will be used in the analysis of data not suitable for normal distribution. X² will be used in
      the analysis of qualitative or counted data. p<0.05 will be considered significant.

      Expectations and scientific contributions Preparing patients for surgery, determining the
      causes of blood loss during and after surgery and creating preventive strategies are
      important for all operations, especially hip replacement surgeries. While determining the
      strategies, the main aim should be to see the pre-, intra- and post-operative period as a
      whole, to determine the transfusion risks according to the comorbidities and anemia of the
      patients, and to determine the anesthesia and analgesia managements that reduce blood loss in
      the intraoperative and postoperative periods. With this study, it is aimed to both update the
      practice and contribute to the literature by examining the operations performed by the same
      experienced surgeon and testing the effectiveness and safety of the strategies applied.
    

Intervention name(s): Anesthesia management/Hip replacement surgery; Demographic data; Chronic diseases; Postoperative complication
Intervention type(s): Procedure; Procedure; Procedure; Procedure
Intervention description(s): The effect of anesthesia management on blood transfusion practices in hip replacement surgeries; The effect of demographic data on blood transfusion practices in hip replacement surgeries; The effect of chronic diseases on blood transfusion practices in hip replacement surgeries; The effect of blood transfusion applications on postoperative complications in hip replacement surgeries
Intervention MeSH terms: Anesthetics
Observational model: Other
Time perspective: Retrospective
Sampling method: Non-Probability Sample
Study population: 
        Patients who have undergone hip replacement by the same experienced surgeon in the last 12
        years will be retrospectively screened from patient files and the system in terms of
        anesthesia and blood transfusion applications.
      
Keywords: Blood Transfusion; Hip Replacement; Anesthesia