My blood pressure is fine when I wake up, and even during the afternoon but for some odd reason it rises from 8:25PM to 9:00PM. My readings are around 130-150 sometimes over 65-75. It's very strange. It would be normal most of the times but sometimes it does this. After 9:00pm my blood presure would come down once I fully relax. I take my ramipril around 9:15AM in the morning and 9:15PM at night. I used to take 160mg of diovan once a day but it wasn't as effective as ramipril so my doctor switched it to ramipril. My other medication includes inderal 160mg twice a day, norvasac 10mg once, apo furmosiide 20mg once, spirolatone 100mg once, asprin 325mg once. I'm only 27 years old and I have just had open heart surgery not too long ago. I just would like to know why during this time that it would trigger a sudden increase of bp? Is this a cause of concern? Once I take my medication from 9:15PM my bp is normal from then onwards.