Can I take Clexane before carpal tunnel syndrome surgery?

The use of anticoagulants, which is Clexane, should be absolutely consulted with a doctor before the procedure. There are many variables that can influence your doctor's decision about the use of a medicine, e.g. your individual risk of venous thromboembolism, your overall health burden, other medicines you use, the type of anaesthesia under which the procedure will be performed. Therefore, I am not able to answer your question whether you should use the drug or even whether it will be advisable to continue it. You can read more about anticoagulants in the article: https://www.gdziepolek.pl/artykuly/leki-przeciwzakrzepowe