<s>[INST] I have had a lumpectomy in August and am undergoing chemo.  I had a PICC line inserted a week ago and one dose of chemo since; however, I have a high incidence of anxiety that is like palpitations of the heart - I've tried deep breathing which works for a while.. [/INST] Chemotherapy drugs are known to cause palpitations and anxiety. If its too much like effecting your sleep mention it to your oncologist so he can precrobe antianxiety drugs or else deep breathing is sufficient. </s>