Cognitive Changes After Major Joint Replacement - Full Trial (Cognigram 2)
This study, called "Cognigram 2," is investigating how people's thinking and memory skills change after major joint replacement surgery, like a hip or knee replacement. Sometimes, people can experience temporary changes in their memory or ability to think clearly after surgery and anaesthesia, known as Postoperative Cognitive Dysfunction (POCD). This research aims to understand how often these changes happen, how long they might last, and what factors could increase someone's risk, such as other health conditions or complications during recovery. By understanding this better, doctors hope to develop better ways to support patients and improve their recovery after surgery.
At a glance
What is this study about?
When you have a big operation like a hip or knee replacement, doctors sometimes notice that people can have temporary changes in their memory or how clearly they can think afterwards. This is often called Postoperative Cognitive Dysfunction, or POCD for short. While many people think these changes quickly go away, studies have shown that some people might still notice them for a few months after surgery.
This study, called "Cognigram 2," wants to look deeper into these changes. The main goal is to understand exactly how often these thinking and memory changes occur after joint replacement surgery and how long they might last. The researchers are also trying to find out what might make someone more likely to experience these changes. For example, they are looking at whether existing health problems like autoimmune conditions, complications during recovery, or even a very mild memory issue before surgery could play a role.
By carefully studying this, the researchers hope to gain a much clearer picture. This information could be very valuable for doctors and patients. It could help doctors better prepare patients for what to expect, plan the best care after surgery, and potentially lead to new ways to support people's memory and thinking skills, making recovery even smoother.
Key takeaways
- This study looks at changes in thinking and memory after hip/knee surgery.
- It aims to understand how common these changes are and what causes them.
- Participation involves taking thinking and memory tests before and after surgery.
- There are no study medications involved.
- The information gained could help improve care for future patients.
- You can withdraw from the study at any time.
Who may be eligible?
This study is looking for volunteers who are 50 years old or older and are planning to have an elective total hip or knee replacement at Sunnybrook Health Sciences Centre. "Elective" means it's a planned surgery, not an emergency.
However, some people won't be able to join. This includes if you already have a diagnosis of dementia, are taking certain medications for memory problems (like donepezil), or have very severe memory difficulties that would make it hard to do the study tests. Also, if you have certain uncontrolled mental health conditions, or if you've recently had another joint replacement and participated in this study within the last six months, you wouldn't be able to take part.
Could this study suit you?
Answer these quick questions to see if you may be eligible. This is a guide only — the research team makes the final call.
- Am I 50 years old or older?
- Am I having an elective hip or knee replacement at Sunnybrook Health Sciences Centre?
- Do I currently have a diagnosis of dementia or take donepezil?
- Do I have any uncontrolled mental health conditions?
- Can I commit to attending follow-up visits for memory tests?
What does participation involve?
If you decide to take part in this study, you would undergo some cognitive (thinking and memory) tests. These tests would happen before your surgery, and then at different times after your surgery, to see how your thinking skills change. The study involves answering questions and doing computer-based tasks that measure things like memory and attention. You would need to attend follow-up visits as scheduled by the research team. The specific number and timing of visits would be explained to you, but it would involve assessments over a period extending beyond three months after surgery. There are no study medications involved; it's purely about testing and observation. The total duration of your participation would depend on the study's follow-up schedule.
Potential risks and benefits
Locations (1)
- Sunnybrook Health Sciences CentreVerified postcodeToronto, Canada
Common questions
What does 'cognitive changes' mean?
It refers to shifts in your thinking skills, like memory, attention, or how quickly you can process information, that might occur after surgery.
Is 'POCD' serious?
It can be worrying for patients, and the study aims to understand its impact and how to minimise it for overall better recovery. It's often temporary, but this study looks at longer-term effects.
Will I get drugs for my memory in this study?
No, this study is about observation and testing your thinking skills. It does not involve giving any new medications.
How long will I be in the study?
The study involves cognitive tests before your surgery and at various points afterwards, extending beyond three months, as set out by the research team.
Will my regular doctor know I'm in the study?
Yes, if you choose to participate, your medical team will be aware, and the study results will help inform general patient care.
How to find out more
Always speak to your GP or specialist before deciding to take part in a study.
Discussion
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