 [ Symptoms ] should i cancel surgery if i took 400mg ibuprofen 30 hours before and garlic and chondroitin 48 hours prior to surgery  on 1217 i am to have arthroscopic shoulder surgery i just now 1216 read over the pre surgery instructions i take garlic and chondroitin on a daily basis i took both of them on evening of 1214 i also took 400mg of ibuprofen on evening of 1215 do i need to cancel surgery [ Disease ] yes stress can cause bradycardia or reduced heart rate and as you have a recent stressful event it can be a cause so my advise to you is to first of all relax and start doing meditation and deep breathing exercises take nutritious and a sufficient sleep of atleast 8 hours if at all the symptoms does not get better then consult a cardiologist and get a thorough evaluation done hope this helps