Diastolic pressure

[kalgs]

Anyone noticed an increase in diastolic blood pressure following an ablation?

[BobD Volunteer]

If the heart is working more efficiently it may well do. For sure rate is usually higher as explained in the fact sheet and may take many months to return to pre ablation levels. Typically around 20 bpm, higher.

Don't forget also that your BP machine was not working correctly when you were in AF anyway and would give false readings.

[kalgs in reply to BobD]

It won’t go up if it’s working more efficiently

I’m comparing to when I wasn’t in AF

[CDreamer in reply to kalgs]

I would say my diastolic stabilized & yes it was higher but then before ablation mine was often unreadable & if it got to 90 I thought it brilliant. In AF my diastolic would vary from 60 to 180 so it was ridiculous. In NSR average was 75-90. After ablation 90-110. After pacemaker it’s steady at 10-120.

What’s your difference? If within normal limits I wouldn’t be concerned.

[kalgs in reply to CDreamer]

We want diastolic low not high

[kalgs in reply to kalgs]

ideal blood pressure is considered to be between 90/60mmHg and 120/80mmHgDiastolic is the lower of the 2

[CDreamer in reply to kalgs]

Sorry I misread & was thinking systolic 🤷‍♂️

I can’t remember as I mostly noted systolic. I’d have to look at my recordings from 2014. Maybe others will chip in who’ve had ablations more recently.

There is a ratio between systolic/diastolic & I can’t remember what it’s called but basically the difference between systolic/diastolic maybe significant if the it exceeds 40. I’ll remember by morning!

[kalgs in reply to CDreamer]

It’s ok . It was a general enquiry to see how others had been affected. I understand BP. 30 years NHS . Thanks anyway

[kkatz in reply to CDreamer]

Hi Creamer,The gap between them is called pulse pressure. The worry I believe is if you is narrow pulse pressure.

[CDreamer in reply to kkatz]

Thanks - I remembered this morning!

[kkatz in reply to kkatz]

Autotext keeps getting your name wrong.Sorry

[Palpman]

I don't think the heart has anything to do with the diastolic pressure.

It is the volume of liquid plus the constriction and relaxation of the vessels that determine diastolic pressure.

[Hidden in reply to Palpman]

Hi! I see that you were/are an engineer, so will try to talk to you that way. The heart, as a pump, has its diagramme characteristic in a p-Q (pressure-flow rate) coordinate system. It brings the energy into the system. The pipework (blood vessels in the body) have, on the other side, their diagramme characteristic (p-Q) as a system that uses the energy the heart supplies. The intersection of the two lines in such an diagramme determines the "working point". Because of the changes, which both characteristics experience with the time (mood, body condition, aging, etc), this working point wonders in a "field of possible solutions", so can never be stable and it is normal that the pressure varies, short term but also long term. This theory of fluid transport is poorly known to MDs, hence their insecurity when talking about BP. Many people here will not understand what I was talking about, but I am certain you will. I was teaching Hydraulics, at the Uni, for decades...

[Palpman in reply to Hidden]

Makes perfect sense to me as a electro/mechanical engineer.The circulatory system is much the same as an irrigation system with non return valves, soft rubber piping and a variable speed positive displacement pump.

In the heat of the day the pressure will fall due to pipe expansion.

Unfortunately there is no pill to contract the pipes or to increase the pumps efficiency to bring the system back to normal.

[Hidden in reply to Palpman]

So glad I found a chat-mate! You are right about the pill and about pump efficiency, there is little that can be done to intervene. But, if you ask me, the main problem is still the understanding of what's going on, not only by the patients, but by the MDs also.

What symptoms will a patient have when he/she slips into AF, depends on the state of the "pump" and the demands the body puts before the pump. If, in NSR, the heart already has the problems to fulfill its task (poor valve state, poor muscle state, etc. and at the same time big (fat) body), than switching into AF regime, with sudden drop of the flow-rate to 60-70% of normal, will give poor supply of all the organs with the blood, including the brain. Such people suffer a lot when they have an AF attack.

I suspect that there is a very large number of asymptomatic people with AF, whose heart, when slipping from time to time in AF (despite loosing precharge function from the atria), still has sufficient flow-rate to keep the person going, almost without symptoms. I believe to be one of those...

There is little that can be done to improve the performance of the heart (say replacing the valves...) but there IS A LOT that can be done from the side of the supplied system - reducing weight will always reduce the demands which are put before the heart and so make the debilitating symptoms less critical.

[Buffafly in reply to Hidden]

Very interesting, thank you.

[CDreamer]

Morning Kalgs - I remember now - Pulse Pressure and MAP is what I was thinking of and evidently there is some research that demonstrates that Pulse Pressure can change after ablation for reasons that are as yet hypothetical as far as I can see.

This article explains pulse pressure and what a change could indicate healthline.com/health/pulse...

[kalgs in reply to CDreamer]

Thanks