What is normal blood pressure fluctuations?

[lamal3]

I'm a 27 year old male who just undergoed open heart operation.  I'm lucky to be alive right now.  I was perfectly normal and then all of a sudden it was like a light switch had went off one night.  I had a crushing sensation in my chest so I went to the emergency at night.  I didn't know what had happened to me.  The doctor at night didn't know exactly what was wrong and because I was so young they thought it was nothing serious except that I was hyperventlating.  I waited for over an hour before it was my turn, and by that time I saw the doctor my body began to shut down first the lower part of my legs then my arms and then my brain.  I just couldn't keep up anymore.  As soon as my brain shut down I was done.  The doctors did some tests and scans early in the morning as soon as I got up then half an hour later they rushed me to the Operating Room.  They transferred me from one hospital to the other so fast I didn't even have time to see my parents before going in.  I stayed in the hospital for about a week and everything was fine except my blood pressure.  It was constantly 190-200/100 even with the medication they gave me.  I was taking so much medication but nothing worked.  Then just as I thought I was able to get out of the hospital they told me to stay a bit longer just to control the BP before getting out.  Then I thought to myself when will I get out?  Luckly they found the right medication and dosage in the afternoon so I was fine then.  I was on inderal 160mg 3 times a day, but now 2 times a day.  Sorry about the long story.  Question is my blood pressure is okay from morning to late afternoon but as soon as 8:00PM to 10:00PM it is higher.  What is the reason for this?  It goes to 150-160/68 most of the times.  I take my medication at 11:00AM in the morning and 11:00PM at night.  So for the two hours or so it goes high.  What is causing this to happen?  Is it ok for it to be high for a little bit and then come down?  

[kenkeith]

It appears you may have ideopathic high blood pressure meaning the cause is unknown.  Apparently, the 11.00AM dose is losing its effectiveness, you may need adjustment...discuss with your doctor