increased heart rate after that it started getting worse; a warm feeling in her chest like tingling; kind of short of breath; left hand start swelling up first a little bit and then her left arm start swelling up/ her right hand start very, very mild swelling in her right hand; Chills; Fatigue; GI problems; still have some issue, did not feel good, off and on; SARS Covid antibodies test says positive; This is a spontaneous report from a contactable other nurse (patient) from a Pfizer sponsored program Pfizer First Connect. A 57-years-old female patient received bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE), via an unspecified route of administration on 17Dec2020 at single dose (lot number: EJ1685) on Deltoid Left for covid-19 immunisation. Medical history included Paroxysmal supraventricular tachycardia. The patient's concomitant medications were not reported. The patient experienced a warm feeling in her chest like tingling; kind of short of breath, it went away like she said it was just breath it was like for couple of minutes and then it went away and then she was just fine till it's been long here honestly about 3 or 4 days later; got shot in her right arm but left hand start swelling up first a little bit and then her left arm start swelling up and it's just and then that's the base and then her right hand start very, very mild swelling in her right hand. The hospital think there as some clot or something weird but she did not and then that started going down after that it just started going down and went away and never had swelling since then but this was going to long but this was something weird happened to her. She got chills, She got fatigue. She had increased heart rate after that it started getting worse. She had Paroxysmal supraventricular tachycardia, she had that always but it's been control. She walked 5 miles daily a day, she was in shape, she had lot since then, so it's been under control, she never had problem with it until after she got the shot, her heart rate was she had to add medication, she never have to add. She took metoprolol (Treatment) so she added that and she added more and that's thing get it under control and then she take herself back off because she felt like it was under control but she had GI problems since, now she was getting better now, still have some issue, did not feel good, off and on. The patient underwent lab tests and procedures which included blood test: good on 04Jan2021 (blood work to see if something was going on to her heart, because she had short breath, and everything was good), weight: 166 or 164, SARS Covid antibodies test IgM on 04Jan2021: positive. Treatment: Nurse stated, "No, not now, I had a heart-rate monitor, it's what for see what is my heart rate, to locate and see what's going on." Outcome of left hand start swelling up first a little bit and then her left arm start swelling up/ her right hand start very, very mild swelling in her right hand was recovered.; Sender's Comments: There is not a reasonable possibility that event heart rate increased is related to BNT162B2.  The event is most likely due to underlying paroxysmal supraventricular tachycardia. The impact of this report on the benefit/risk profile of the Pfizer product is evaluated as part of Pfizer procedures for safety evaluation, including the review and analysis of aggregate data for adverse events. Any safety concern identified as part of this review, as well as any appropriate action in response, will be promptly notified to Regulatory Authorities, Ethics Committees and Investigators, as appropriate.