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Pulmonary marrow embolism: a dog model simulating dual component cemented arthroplasty.
Summary
Dual arthroplasty in dogs caused significant cardiopulmonary changes and marrow microembolism. Continuous monitoring and prophylactic measures are crucial for patients undergoing dual component arthroplasties to prevent collapse.
Area of Science:
- Veterinary Medicine
- Cardiopulmonary Physiology
- Surgical Research
Background:
- Cemented arthroplasty procedures can lead to significant cardiopulmonary complications.
- Dual component arthroplasties present a higher risk compared to single prosthesis implantation.
Purpose of the Study:
- To investigate the cardiopulmonary changes associated with single and dual cemented arthroplasty in dogs.
- To identify the risk factors and potential prophylactic measures for cardiopulmonary complications during arthroplasty.
Main Methods:
- Monitoring cardiopulmonary parameters (BP, PPA, PVR, PaO2, cardiac output, mixed venous oxygen tension) in dogs undergoing single and dual arthroplasty.
- Histologic lung examination and morphometry to assess for marrow microembolism.
Main Results:
- Both procedures caused cardiopulmonary changes, but they were more pronounced and prolonged in the dual arthroplasty group.
- Dual arthroplasty led to significant marrow (fat) microembolism.
- Cardiopulmonary collapse is a recognized risk with Guepar dual component arthroplasties.
Conclusions:
- Dogs undergoing dual component arthroplasty are at increased risk of cardiopulmonary complications and require continuous monitoring.
- Meticulous intramedullary lavage, increased inspired oxygen fraction (FIO2), and maintaining intravascular volume and cardiac output are recommended prophylactic measures.
- The bilateral arthroplasty model is valuable for studying interventions to prevent intraoperative marrow microembolism syndrome.