Panic attack causing borderline high pulse rate?

Yes but so what: One of the symptoms of panic is increased heart rate. Get good treatment for the panic disorder and the heart rate issue would not be a problem.

Probably Not: When you are in the middle of a panic attack, there is usually an increase in heart rate. However, this increase does not usually continue after the panic attack ends. If you havfe a consistently high, or even "borderline high" heart rate, it is probably due to something else. One possibility would be a persistent presence of stress and anxiety in addition to specific episodes of panic.

Panic & Pulse rate: Temporarily, yes. This follows rapid heart rate during the attack.