<s>[INST] Hi, I am a 66 year old female and suffer from high blood pressure. However I am not feeling well, have been violently sick and feel as if my heart is missing a beat. My blood pressure is 120 over 62 and pulse 77. I had a total knee replacement 4 weeks ago and have a lot of swelling in the knee and leg. Is this normal please. [/INST] Hello! Welcome and thank you for asking on Chat Doctor! Regarding your concern, I would explain that your blood pressure and heart rate values are within the normal ranges. Regarding your symptoms, they could be related to inflammation. I recommend consulting with your attending physician for a careful physical exam and some tests: - a resting ECG and cardiac ultrasound to examine your cardiac structure and function- an ambulatory 24-48 hours ECG monitoring to examine your heart rhythm trends during the day and exclude possible cardiac arrhythmia-blood lab tests (complete blood count, PCR, sedimentation rate, blood electrolytes, thyroid hormone levels). You should discuss with your doctor on the above tests. Hope you will find this answer helpful! Greetings! </s>