Nurse here, seek medical help immediately, it could be a bad monitor, maybe some deep breathing is needed or maybe nail polish if you have it, or it could be something veryserious. If you’re ill or have a respiratory history you could die.

And with a pulse like that there is probably some kind of cardiac rhythm issue as well. Maybe you need some fluids and monitoring but if I saw 140 on a patient I would call a rapid response because that is possibly CRITICAL and possibly fatal.