<s>[INST] I was in Er today suffering of sever headach and elevated BP.An ECG was done showing changes in the T waves,i am 45 years old women,my Dr said its nothing to worry about will be doing stress test and Echocardiogram.Can you tell me what that means?i am obese 95 Kgs hgt 170cm,asthmatic with endometriosis and swallen ankles [/INST] Whenever once blood pressure goes up heart has to pump blood against high pressure, so it is under stress, so there are changes in the ECG. These Changes can also occur if someone has blocked arteries so to differentiate the two stress test will be done so that if blockage is present in arteries it will show changes in the ECG. So try to maintain your blood pressure in normal range and get those test done to rule out blocked arteries. Also get tested your lipid profile and sugar levels. Healthy lifestyle And weight reduction is the key </s>