Is pulse rate 55-65 is normal? we have started concor AM 5mg from past 2 days post we are observing these? and also had irregular heartbeat and little chest pain too. My father is hypertensive. Post covid he had palpitations and pulse rate was around 120 and then used ivabid for one month and then discontinued and started dilzem cd 90 mg for one month, but observation was Dailated aortic valve (4.3 cm). Now am worried can we continue concor as pulse rate might decrease further too?