Foundation: Obstructive rest apnea (OSA) is a disorder portrayed by intermittent, fractional, or complete impediment in the upper aviation route during rest. The point of this survey article was to feature obstructive rest apnea as a perioperative danger factor expanding bleakness and mortality in current surgeries with appropriate evaluation and the executives of this danger factor. This is a survey article, The hunt was acted in MEDLINE, Embase, Pubmed and CINAHL Plus in a similar date range with the accompanying mediacl terms: "Perioperative; Assessment; Obstructive; Sleep; Apnea", including articles from 2000 to 2020, Excluded articles from audit are those of langauge other than English. Patients with realized OSA ought to be surveyed for the seriousness and ampleness of the executives. End: general administration systems incorporate semi-upstanding or upstanding situating, narcotic saving pain relieving strategies, and evasion of simultaneous organization of tranquilizers. A prohibitive or objective coordinated procedure for perioperative liquid treatment utilizing liquids with moderately lower salt substance (ie, Ringer's Lactate or Plasmalyte instead of ordinary saline) is liked to stay away from rostral liquid movements in the neck. In postoperative patients with a known conclusion of OSA who are dealt with preoperatively with noninvasive positive aviation route pressure (PAP), it is recommended the standard utilization of PAP treatment instead of no PAP. In those without an analysis of OSA or in the individuals who have a conclusion however are resistant or beforehand narrow minded with treatment preoperatively, PAP ought to be applied distinctly in the individuals who show postoperative times of hypoxemia, deterrent, apnea, or hypoventilation instead of the standard organization of PAP.