PSG formulas Questions with correct Answers

PSG formulas Questions with correct Answers formula for figuring out the % of sleep time in a stage N2 / TST = # x 100 = % 150 N2 / 295 TST = .508 x 100 = 50.8 100 R / 295 TST = 34% formula for EPOCHS to MINUTES EPOCHS / 2 30 epochs in N1 / 2 = 15 minutes Sleep period time formula (SPT) Last sleep epoch - sleep onset epoch / 2 = SPT [ "P" post - "T" onseT ] Sleep Latency formula sleep on set - lights out / 2 (for minutes) " S" sleep onset - "L" lights out Mean Sleep Latency formula Nap1 + Nap 2 + Nap 3 / # of Naps Sleep Efficiency formula TST / TRT (total recorded time) or TIB (time in bed) Time in each stage formula Time in each stage / TST x 100 Apnea Index # of all apneas / TST in minutes x 60 (? 31 formula is good) [all aps - "I" in index is / - then the "X" is x by 60] respiratory disturbance index RERA + apneas + hypopneas x60 / TST (min.) {p.E8} BMI formula height x height = X Wt. / X = Y Y x 703 250 lbs 72"---72 x72= 5184 250/5184 = .048 x 703 72x72=X 188/X=Y Y x 703 volts, sensitivity, pen deflection. triangle V S/PD 10 5/2 [Valdosta's super police dept.] [10/5/2]