No problem--we all have a handful of things that don't click right away-or even after some practice.
Just a heads up, some people don't tolerate the cuff very well, and it is
uncomfortable--especially if you have a hypertensive pt who you need to pump up to 250, 300, etc. They might start verbally complaining or fidgeting their hands/arms/body, sigh loudly, etc. I usually tell them something like a basic "Try to hold still" to "Now this might be uncomfortable, but in order to get an accurate reading, I need to squeeze the cuff kind of tight on your arm. This will only take a moment, and it's very important that you stay as still and quiet as possible so that I can get a precise measurement as quickly and comfortably for you as possible. We don't want a false reading". Just to remind them that you're on their side and looking out for their best interests--not just trying to torture them.
Some people hand over their arm, sit up straight and keep quiet as a church mouse, and some will start as soon as you begin to pump with "Ow. I don't like this! Do you need
to make it so tight? It's squeezing my arm! Look-the veins in my hand are popping out. Did Dr. Soandso say if he's going to refill my medication? Everytime I come in here, you people do this to me--my arm is gonna be all red now I bet! *sigh*".
And everything in between.
lol, anyway! I highly suggest buying (if you haven't already) a cheap manual cuff and practice on EVERYONE-family, boyfriend, classmates, who I bet would offer their arm if you'll do the same for them.