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JLeslie's avatar

Can blood pressure rebound even higher than it was before medication?

Asked by JLeslie (65418points) June 25th, 2018 from iPhone

I recently started taking blood pressure medication. It’s been about 4 weeks now.

A few days in a row now my BP has been higher than ever recorded! 170 over 100 was my highest I think. It was about the time my medication was wearing off.

Can the withdrawal off the med be worse than if I had not started medication at all?

I’m taking an ace inhibitor.

Don’t worry I’m not trying to stop taking my medication. This was an observation I noticed taking my blood pressure when I was an hour or so later than the day before taking my medication. I purposely was trying to change my medication time by pushing back an hour or so over a week’s time.

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9 Answers

zenvelo's avatar

Are you resting sufficiently before taking your BP reading? Are you following all the directions from your doctor on checking your BP?

kritiper's avatar

You may want to ask your doctor about certain things you may take. Like cold medicine, decongestants, even OTC antacids.

JLeslie's avatar

My doctor know everything I take including vitamins and minerals.

Yes, I had been resting before taking the BP. I took it four times with two different cuffs over a 5 minute period, waiting to see if it was a mistake.

I’ll mention also that just 7–8 weeks ago I had great blood pressure for a few weeks (that is before I started my meds) and had a stress test during that time that was a perfect stress test so to speak. Great BP the entire time and great recovery. Then my BP was up again over a week so I started the rx. It’s very frustrating.

I just took my BP now and it’s 106/58. I’m in the peak time for the meds to be working though, and my feet were up.

PIN_24's avatar

Stopping a medication or even delaying the dosage can cause rebound hypertension. Angiotensin converting enzyme (ACE) inhibitors act by increasing the diuresis and reducing the blood volume. If you delay your meds, then the urine volume per hour will decrease and you might suffer from rebound hypertension. Consult a Physician if the problem persists and please adher to the prescribed regimen strictly to avoid complications.

JLeslie's avatar

^^My question is, is the rebound WORSE then if you had never taken meds at all?

Taking medication within an hour isn’t really considered late. My guess is even if I take it perfectly on time, if I took my BP an hour before my BP possibly is very high.

PIN_24's avatar

@JLeslie It can happen as the threshold will be reset due to consumption of xenobiotics (medicines). The body will try to compensate the excessive urine output by vasoconstriction of blood vessels, which might increase the blood pressure to a level higher than the one prior to the initiation of medications. These medications are acting for an approximate duration of 8 hours. So, early morning, in the absence of meds in blood, the increased body compensatory mechanism in the form of vasoconstriction of blood vessels would be prominent and would cause an elevated BP level higher than the permedication days’ levels. However, I believe that this effect is temporary and soon the BP will stabilise to the premedication levels if there is prolonged absence of meds in the blood.

JLeslie's avatar

I take it currently once a day, so it’s well after the half life of the drug. Now, I’m curious to check my BP around the 14 and even 16 hour mark when it’s likely the medicine left in my system is already not enough to be therapeutic.

KNOWITALL's avatar

Maybe you are overthinking it like I do? When I get my White Coat Syndrome or overly focus on it, it skyrockets. My oral surgeon had to do a procedure and my bp shot to 176 over 114, due to nerves and my overthinking- to me it’s like a test I know I’ll fail and I freak out. Happens all the time to many people on bp meds I’ve talked to.

I’d back off of it and only take it once a day for awhile, calm yourself down. :) Good luck.

JLeslie's avatar

^^I don’t think that’s it, but things seemed to have change for me, so now maybe my BP reacts more to stress? Previously, I never found that to be the case.

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