Had my labs done today including my EKG and the tech sai that my heart rate was low. It was 43 will this cause problems with getting cleared for surgery?

Not unless there is an underlying cause.

A lower heart rate, as B52 noted is no cause for alarm, unless there is an underlying cause.

I can recall that while one of my sons was being monitored as a teen just prior to oral surgery, the assistant remarked that his heart rate was 36. I was concerned, but she told me that it was just a sign of a young and fit heart rate.

I'm certain that if there is anything to be concerned about, you will be notified. There is usually concern if your heart beat is uneven or irregular...

It depends what is normal for you. I have extremely low blood pressure ie 90/60, but it has always been like that. When I had my baby the dr became very concerned when it was a normal 120/80, as this was high for me. Everybody is different and so long as your heart rate is generally that low, it's nothing to be concerned about.