The Influence of Perioperative Strategies on the Extent of in Orthopaedic Prosthetic Surgery
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- This is an observational study: the protocol does not assign a study treatment.
- Who it may be relevant to
- Registry conditions: Orthopaedic Surgery. Basic parameters: No limits · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Italy
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Influence of Perioperative Strategies on the Extent of Total Blood Loss in Orthopaedic Prosthetic Surgery
Overview
To assess the extent of blood loss in prosthetic surgery, considering whether possible variables may influence, either positively or negatively, the extent of such loss. The assessment will be carried out by analysing parameters (haemoglobin - haematocrit) in the immediate preoperative period and then on days 1-3 and 7. Numerous clinical studies have examined blood loss - both intraoperative and, above all, total blood loss - in shoulder, hip and knee replacement surgery. Anaesthetic and surgical techniques, relevant medications, the use of pneumatic tourniquets and, more simply, intraoperative positioning, as well as blood-sparing and blood recovery methods, have been the subject of extensive literature. Our study aims to retrospectively evaluate a full year of prosthetic surgery, analysing all the factors involved in the search for a definitive answer regarding the best method for this purpose, if feasible \[1,2,3,4,5\]. Prior to admission, the patient undergoes a standardised series of tests, which also include a complete blood count, serum iron, transferrin and ferritin levels. This series of tests concerning haematocrit and haematopoietic function is then repeated on the 1st, 3rd and 7th post-operative days to assess overall blood loss . Patients of both sexes who have undergone total knee replacement (unilateral or bilateral), unicompartmental and total knee replacement (unilateral or bilateral), and total shoulder replacement. The above patients operated on between January 2025 and December 2025 at the San Siro Clinic.
Detailed description
3.1 General objective To assess the extent of blood loss in prosthetic surgery, considering whether possible variables may influence, either positively or negatively, the extent of such loss. The primary objective is to evaluate the extent and variability of blood loss in comparison with the literature and in relation to the various intraoperative methods used.
The assessment will be carried out by analysing the parameters (haemoglobin - haematocrit) in the immediate preoperative period and then on days 1-3 and 7.
3.2 Primary objective The primary objective is to assess the extent and variability of blood loss in comparison with the literature and in relation to the various intraoperative techniques used.
The assessment will be carried out by analysing the parameters (haemoglobin - haematocrit) in the immediate preoperative period and then on days 1-3 and 7.
3.3 Secondary objectives
* Long stay: i.e. whether blood loss has, on any occasion, altered the post-operative course and/or delayed orthopaedic discharge * General and/or local complications: such as the presence of haematomas, or a drop in haemoglobin levels requiring specific treatment and/or transfusions of packed red blood cells or plasma. This may also include difficulties with recovery, including delays in regaining the ability to walk and in overall recovery * Transfusion of blood or blood products: to be considered a 'relative failure' in preoperative preparation and/or the perioperative course
4\. STUDY DESIGN This is a retrospective, observational, single-centre study involving patients who underwent orthopaedic prosthetic surgery (hip, knee and shoulder) at the IRCCS Istituto Clinico San Siro between January 2025 and December 2025, with clinical data collection. The study will be conducted in accordance with Good Clinical Practice guidelines.
Primary outcome measures
- The primary objective is to assess the extent and variability of blood loss in comparison with the literature and in relation to the various intraoperative techniques used. The assessment will be carried out by analysing the parameters (haemoglobin - hae [Time frame: 6 months]
Eligibility criteria
Inclusion criteria
\- Adult patients in ASA Class I-II-III undergoing prosthetic surgery, as a first-time implant
Exclusion criteria
- Patients who did not receive tranexamic acid prophylaxis (pre-operative and post- operative doses) and are therefore not comparable with the vast majority of cases.
- Reintervention, as bleeding depends on a variable that is not constant, namely the initial implant
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Observational model
- Cohort
Study locations
Italy · 1 center
- I.R.C.C.S Ospedale Galeazzi-Sant'Ambrogio — Milan
Identifiers
NCT: NCT07500350 · IPECO