145 is a problem no matter what your underlying health. You could be in a fib and need lifelong anticoagulation to prevent stroke. You could be dangerously dehydrated , low on oxygen or be septic. A heart rate that high should always be a trip to the ER
Well, I was most definitely dehydrated. I was really really thirsty the whole time. I kept drinking water and it did seem to help. If something like that happens again, I’ll most likely take it a lot more seriously. Thanks.