It is unlikely that the muscle contractions you described will have any negative impact on your surgical results. I would check with your surgeon for advice on beginning sexual relations, as opinions may vary. All activity, including sexual activity, should be introduced gradually.
It isn't really the fact that you have lupus nephritis that is the issue, it would be how much, if at all, it has affected your current kidney function. It would also depend on other risk factors medically and also your BMI and medications. This helps determine whether or not to do elective...
Surgery can cause increased heart rate for many reasons. It is best to be examined by your surgeon to determine what may be causing yours to remain high. It could be the stress from surgery, but it's important to rule out more concerning causes.
