In step 2 of an electrophilic addition, the positively charged intermediate combines with (Y) that is electron-rich and usually an anion to form the second covalent bond.Step 2 is the same nucleophilic attack process found in an SN1 reaction.n step 2 of an electrophilic addition, the positively charged intermediate combines with (Y) that is electron-rich and usually an anion to form the second covalent bond.
A. The Sleep Test Optimization Program is prior. authorization initiative for Polysomnography (PSG). There are two types of sleep studies â (1) Attended. Sleep Studies - performed in an outside facility, office, sleep clinic or laboratory; and (2) Unattended.
The purpose of this study is to explore a variety of CPAP pressures to determine which is the most effective in eliminating apneic events and snoring. Split Study â A sleep study which combines a 2 â 4 hour diagnostic test and a therapeutic test in the same night. This study is possible for every adult so that patients with severe OSAS may be treated immediately. If a patient is not âsplitâ to CPAP then the study is run as a NPSG.