When im on scene, like in someones house we generally dont take our lifpak 12 unless its a cardiac call. I get a manual bp first, then proced with the call then i get the NIBP in the ambulance once we get in and once when we reach the ER.
Manual has its place to build and retain the skill of getting a pressure however if the patient is really sick or you have a lot of things to do then I will go with the NIBP.
Running on a vollie BLS truck, We exclusively carry normal old-fashioned BP cuffs as we don't have a cardiac monitor with the built in NIBP cuff. However, when we rendezvous with ALS, I usually try to have at least one or two manual pressures before we rendezvous and attach the NIBP cuff.
It is a County Policy that all BP's must be obtained manually for San Joaquin County as well. This includes ALS, BLS as well as any Inter-facility transfer.
Being on a Medic Unit for the past 5 years, I have seen countless mis-readings by the NIBP by +or- at least 10 points. + or - 10 points can make a huge difference in examing a Pt for orthostatics as well as other procedures. In the end, we try to stay away from the NIBP when examing Pt Vitals.
What's also sad is, I was a FTO (Field Training Officer) and I couldn't believe how many new hires could not conduct a Manual Blood Pressure. When I asked why, many stated, "Oh, we just used the Automatic One" in our EMT class. Makes me think what the heck kind of school did you go to???
I instructed a preceptor to always get a manual B.P. and pulse first. It teaches them to feel for irregularities in the pulse, and they can also hear some abnormal rythyms through ausculating the B.P.
I like to get my first with a NIBP just so I can be doing other things when it is thinking and if I have time to do a manual I do so I can stay fresh with it.
NIBP is nice to have it cuts down on the time it takes to get initial vitals.
I have also come to learn that when the NIBP does not read the first time that the second time it tries and reads and gets a number it is usually wrong, in that case I just do manual.
Unless it's a crazy scene I'll get the first one manually and then see what the monitor gives me. If it's close (+/- up to 5 points) I'll go with it for the call
For my initial B/P I ALWAYS take it manually, just more accurate than an electronic/automated. However, after I take my manual, I place the automated cuff on (from the heart monitor)...and keep a constant check on their B/P throughout transport.