hi, i was reading the post you left back on june 4th about the mva/pulse/vitals with the forearm...you had mentioned a wrist b/p cuff. as reasonably priced as they may be,i have found them to be very unrealiable in motion. that is to say, im sure if your patient is sitting still and you get vitals before the bus starts moving , im sure they will be fine but i have found them to be crap in a moving squad or keyed up situation.if you get a chance, have someone take the b/p with the wirst cuff in a non-moving as well as moving scenerio and you too will see the drastic changes in your readings. just trying to help,as always , stay safe and have fun ~ Fran