Don,
Many years ago, remembering that I was taught that Stethoscopes get the pressure from the sound the blood makes when in enters the artery and exerts
Pressure on the wall vs with PW we get the pressure as it enters the artery.
I did a study and took BP with a stethoscope and then with the PW.
My prelim results were that the PW pressure was on the average 5-8 mmHg greater than the stethoscope. That was using the first sound-not waveform seen as this was with an older parks that you had to run the paper.
I never compiled the results or took the average age,ect--just thought
Who would be interested in something so not significant. I only did about 50-60 patients.Threw all that old stuff away last year when I cleaned out the garage, getting ready to do another sweep this year.
I've worked with techs who said they use the 2 or 3 beat on all pressures and that since they did it that way it didn't matter because the ratio would be the same?? Definitely not my way of thinking. I go by the sound still and find the Parks correlates well with the waveform anyway.
Lisa
-----Original Message-----
From: UVM Flownet [mailto:[log in to unmask]] On Behalf Of Don Ridgway
Sent: Friday, May 08, 2009 1:46 PM
To: [log in to unmask]
Subject: Re: new subject - blood pressure
By "visual" do you mean the needle bouncing on the dial? Or a PPG tracing? A digital strain gauge?? That would be very retro.
Don Ridgway
-----Original Message-----
From: UVM Flownet on behalf of subscribe uvmflownet Elizabeth Gault
Sent: Fri 5/8/2009 7:14 AM
To: [log in to unmask]
Subject: new subject - blood pressure
Got an interesting question today from an intern. If we do pressures for ABI's and use the visual to pick the first beat and the Dr's office is using a stethoscope and using the first audible beat is there a valuable difference? The intern says the Diabetic association wants the BP under 120 and if we show it over and the Doc's office is under who is right? thanks
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