question: Hi doctor,My mother had pacemaker operation six months back. From past five days, her heart rate is hitting 130 very frequently (when she is not idle) every 20 minutes or so. She is feeling a discomfort because of this. When we met the doctor with the pacemaker test, he told everything is normal. My question here is if everything is normal why heart rate is hitting 130 frequently? It is on every activity she does like walk, bath, etc. Please kindly advise me on this.