12 weeks post PM and still not fully fit

I'm now 12 weeks post-PM and not sure if I'm supposed to be fully recovered or if its still early days. Mostly I feel fine, but sometimes I just feel generally unwell, very difficult to say exactly what the problem is but it can last all day, or it can disappear after an hour or so. I never had any symptoms prior to the PM, so maybe I'm expecting too much to be feeling like I did previously after only 12 weeks.

I can go for most of the week feeling well, then one day I completely lack energy and feel quite light headed / dizzy. I can also feel a general discomfort in the chest area (tightness / aching / heaviness) and breathless with a heart beat sensation which can become more pronounced during short bursts of exercise such as climbing stairs or even just talking too much (during presentations / meetings). If however I do an intensive workout on my turbo trainer, then I feel great apart from the first few minutes when I can sometimes feel discomfort breathing. In fact I get the impression that an intensive workout is what can leave me felling quite well for a number of days afterwards.

One thing I've noticed is that my blood pressure is quite low when I'm relaxing especially after I've gone to bed at night. Typically it gets down to about about 92/52 @60bbm, although it has on occasions gone lower. I know my blood pressure has always been a bit on the low side, but I've never really looked at it before so I don't know if its lower now than before.

The reason for my PM was that I started losing consciousness one night every time I fell asleep and within 24 hours I'd been diagnosed with Bradycardia (Sick Sinus Syndrome) and received the PM. The PM is a dual chamber Medtronic ADDR01 (pacing mode DDD) programmed to pace when my heart rate falls below 60bpm. While I was in hospital there were a number of checks performed on my heart and apart from the Bradycardia there were no other abnormalities found, which makes sense really because I was a very fit and active cyclist.

Because my pre-PM symptoms appeared so suddenly and dramatically I was admitted to hospital very quickly, received my PM and then discharged all in less than 48 hours. This meant I had very little time to talk to the cardiologist about my condition (in fact my longest conversation with him was while he was actually performing the procedure). I then had a follow up PM clinic appointment 6 weeks later, but I was only able to see a PM technician with a programmer (not sure what her proper title was) whose only interest was in the PM itself. When I tried talking to her about my symptoms her attitude was that whatever symptoms I may or may not have, they were not being caused by the PM because the PM was was doing its job.

Anyway, last week I decided to see my family doctor to better understand whether my symptoms were normal or if they were cause for concern. He wasn't sure and so he's referred me to the cardiologist. I guess what confuses me a bit is that while my heart rate is above 60bpm, then the PM should not be doing anything and so why aren't I feeling like I did before the PM? One thing I did learn from the PM clinic was that one chamber was pacing at 60% while the other chamber was pacing at only a small fraction of a percent. I wondered therefore whether the PM should have been set to lower than 60bpm. The other things that crossed my mind were (1) whether the PM is making my heart lazy, thereby making the Bradycardia worse and leaving the heart unable to respond quickly to the demands of small amounts of exercise, (2) whether the PM is continuing to pace for too long after the heart has responded to the demands of exercise or (3) whether my Bradycardia / syncope was a symptom of something else.

I would be interested to hear about the experiences of anyone else with a similar condition to mine - thanks for reading.


4 Comments

It can take time

by Theknotguy - 2014-12-25 06:12:34

First, you'll want to schedule an appointment with a cardiologist / EP and get a complete run down of what is going on with your heart. There may be a couple of members on this forum who can give you a little more insight, but I'm not one of them. Some observations:

Most of us need some tweaking with the PM after it has been implanted. So even though it has been implanted and you generally feel good there may be a couple of settings that need to be changed on your PM. Once again, an appointment with your cardiologist / EP.

Even though your PM can keep your heart beating at the minimum rate - apparently yours is set at 60 BPM, there can be other reasons for low blood pressure. Once again, an appointment with cardiologist / EP.

To answer some of your questions:

So why aren't I feeling like I did before the PM? - Contrary to popular belief, it does take some time to adjust to the PM. Depending upon what the conditions happen to be, it can be anywhere from a couple of weeks to (for me) over a year. Some of us are so sick when we get our PM that any improvement is positive. I'm guilty of writing glowing reports but I had a lot of ground to cover. So getting all frustrated because you don't feel above 100% isn't necessarily going to help. Easy for me to say, huh?

I wondered therefore whether the PM should have been set to lower than 60bpm? - Good question. The default base rate seems to be 60BPM. But some people can go lower. An appointment with cardiologist / EP .... (you know the rest)

Whether the PM is making my heart lazy? - The PM runs a complex set of algorhythms that determine when your heart should beat. If your heart doesn't beat within the calculated time, the PM goes ahead and initiates the beat. So your PM is waiting on your heart. It doesn't really make the heart lazy but it will step in because of a problem.

Leaving the heart unable to respond quickly to the demands of small amounts of exercise - Once again, if your heart is responding, the PM won't step in. If your heart doesn't respond as it should, the PM will step in and take over.

Whether the PM is continuing to pace for too long after the heart has responded to the demands of exercise - Again the PM will only pace as it is needed. I can give you a link (if you want) to how Medtronic PM's calculate needing to pace your heart. The PM has calculated your heart needs to beat at a certain time, and if the heart hasn't initiated a beat, the PM steps in an initiates a beat. For most of us, including me, I was short of breath and dizzy because my heart wasn't responding as it should. Since I've gotten the PM I feel a lot better because the PM initiates a beat when it is needed and not when my heart feels like it. To use your analogy, my heart was being lazy and beating only when it felt like it. Now it has to march to the beat of the PM and I feel much better.

Whether my Bradycardia / syncope was a symptom of something else. - Yep, sure can be. I can speculate on a couple of things, but we have other members who may step in and give you a more detailed analysis. An appointment with cardiologist / EP ....

The UK has a good heart association. I'm not sure of the workings for the medical system there, but you'll want to work the system and make sure you can see a cardiologist / EP and get some definitive answers. While you may be wanting immediate and perfect results and are getting frustrated because it isn't happening, I do feel you need some good answers and possibly some tweaking to get the maximum benefit from your PM.

I hope you can get some answers quickly. It appears, for the most part, that your PM is working as it should. With some answers so you can understand what is going on, then having your PM tweaked to get the maximum benefit, will probably make you feel a lot better. My wish for you is that it can happen soon.

Medications?

by Grateful Heart - 2014-12-26 11:12:13

Are you taking any meds that may keep your blood pressure low?

For SSS, your pacing mode should be DDDR not DDD.
The R means Rate Response is turned on. It doesn't show the R when it is turned off, as in your case according to what you wrote.

Most of us with SSS (me too) need the RR on. Since the SA node is not functioning properly, our heart beat does not rise on it's own during exercise, even walking. Ask them to turn it on and see if that helps your symptoms.....it should.

It is common to need a few other adjustments after a few months so don't give up....you'll get it fixed to where you need it for you to feel well. Make sure they don't change too many settings at once though, so if something doesn't feel right, they can change it back and try another setting. But I would definitely start with RR on for you.

Let us know how it goes Shaun.

Grateful Heart

Thank you

by Shaun - 2014-12-28 09:12:06

Many thanks for the responses all of which are informing and VERY much appreciated. In response to GH's question, I am not on any medications.

Exercise Tolerance Test

by Shaun - 2015-01-17 10:01:57

Just had an exercise tolerance test on a treadmill with ECG and blood pressure monitors. All looked good (text book blood pressure and appropriate heart activity), however my heart rate was already at 70bpm before I even started the test.

Actually I have been feeling much better since boxing day which is 2 days after I decided to increase very significantly my level of activity to 45 minutes very intense exercise about 4 times per week. Nothing bad has happened as a result of the intensive workouts, so I think it's time to stop being afraid to live.

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