My surgeon said my lungs sounded fine and he himself would not require me to have a Pulmo consult. However, my INSURANCE requires I have it, along with the 3 months of dietician visits, a Cardiologist clearance and the psych eval. I have had sleep apnea for a few years. The first study is the diagnosis, you may want to call and question the office again, they should have sat down with you and all the reading, They check how many times you stop breathing, how often your brain wakes, your 02 levels and restless legs. The second visit is just to see if you do better on CPAP or BiPAP and wether or not you sleep better with a nose mask, mose plug mask or a full face. You always have to stay over twice but there should be no testing the second time, just the measurements and tweaking of pressures etc. I am sure you will get this sraightened out.