Prospective Validation of Intraoperative Blood Pressure Monitors
This study is investigating blood pressure monitoring during non-heart surgeries carried out under general anaesthetic. It compares two ways of measuring blood pressure: one using a cuff around the arm (like at your GP) and another more direct, invasive method. Doctors want to see how much these two methods differ in their readings of systolic, diastolic, and average blood pressure. Understanding these differences is important because keeping blood pressure stable during surgery is crucial for preventing complications like kidney problems or heart issues. The study also aims to find out what factors might cause these measurement differences, helping ensure patients get the best care.
At a glance
What is this study about?
When you have an operation under general anaesthetic, doctors need to keep a close eye on your blood pressure. This is because changes in blood pressure during surgery can sometimes lead to problems like kidney damage or heart issues. To do this, they use different tools to measure your blood pressure.
This study is looking at how accurate two common ways of measuring blood pressure are. One way uses a cuff around your arm, similar to when you visit your doctor. This is called 'non-invasive' because it doesn't involve breaking the skin. The other way is more 'invasive' and involves inserting a small tube into an artery, usually in your wrist, to get a continuous and very precise reading. This is considered the 'gold standard' as it gives constant updates.
The main goal of this research is to see how much the readings from these two methods might differ during surgery. Sometimes, the cuff readings can be a bit different from the direct artery readings, and doctors want to understand exactly how big these differences are and what might cause them. By gathering this information, they hope to improve how blood pressure is monitored during operations, helping to ensure patients stay as safe as possible and recover well.
Key takeaways
- This study compares two ways to measure blood pressure during surgery.
- It aims to understand differences between arm cuff and direct artery readings.
- Data is collected during your existing surgery; no extra tests are involved.
- Findings could help improve future patient safety and care during operations.
- It's an observational study, so you won't get any new treatments.
- You must be an adult undergoing a non-heart surgery under general anaesthetic.
Who may be eligible?
You might be able to join this study if you are an adult, aged 18 or over, and are having a planned surgery that is not on your heart. Your operation needs to be under general anaesthetic and is expected to last at least an hour. During the surgery, you'll need to be lying flat on your back, and the surgical team will need to use a special thin tube, called an arterial line, to measure your blood pressure directly from an artery. Also, both of your arms need to be available so that different monitors can be placed on them.
However, there are reasons why you might not be able to take part. For instance, if you have certain types of irregular heartbeats, like atrial fibrillation, this study might not be suitable for you. Also, if there's a significant difference in blood pressure between your two arms, you would not be able to join.
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.
- Are you 18 years old or older?
- Are you having a non-heart surgery under general anaesthetic?
- Is your surgery expected to last at least 60 minutes?
- Will you have a direct arterial line inserted for blood pressure monitoring?
- Do you have a regular heart rhythm?
- Are both of your arms available for monitoring during surgery?
What does participation involve?
This is an 'observational' study, which means you won't be given any new treatments or medicines that aren't already part of your usual care. Instead, the study team will simply observe and record the blood pressure measurements taken during your surgery. They will use the standard blood pressure cuff on your arm and the more direct arterial line, simply comparing the readings these devices provide. There are no extra visits or assessments beyond what is already planned for your operation and recovery. The study will only involve collecting data from the procedures you are already undergoing.
Potential risks and benefits
Locations (1)
- Maisonneuve-Rosemont Hospital - CIUSSS de l'Est de l'Île de MontréalVerified postcodeMontreal East, Canada
Common questions
What is the main goal of this study?
The study aims to compare how blood pressure readings differ between a standard arm cuff and a more direct, invasive monitor during surgery.
Will I receive any new treatments or medicines?
No, this study only observes and records current blood pressure monitoring methods during your planned surgery; no new treatments are given.
What kind of surgery is this study for?
It's for non-heart surgeries that are expected to last at least an hour and require general anaesthetic.
Will taking part involve extra appointments?
No, there are no extra appointments. Data will be collected during your existing surgery and recovery period.
Can I change my mind about participating?
Yes, you can choose to leave the study at any time, and your medical care will not be affected.
How to find out more
Pascal Laferrière-Langlois
Always speak to your GP or specialist before deciding to take part in a study.
Interested in taking part?
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