Could Preoperative Assessment of Physical and Psychological Status Help Predict Pain After Anorectal Surgery?

Inclusion Criteria: * Patients over 18 years old * Diagnosed benign anorectal disease requiring surgical treatment: hemorrhoidal disease of stage 2-4, anal fissure that does not respond to conservative treatment, rectal and rectovaginal fistulas with or without drainage ligature, post-traumatic failure of the anal sphincter, as well as other types of failure of the anal sphincter. * One of the planned interventions: open/closed hemorrhoidectomy with or without Ligasure, excision of the anal fissure, excision of the rectum or rectovaginal fistula of the rectum with or without segmental proctoplasty, sphincterolevatoroplasty or other options for reconstruction of the anal sphincter. * Indications for planned surgical treatment * Absence of other diseases that cause pain syndrome. * I, II class of anesthetic risk according to ASA classification * Voluntary signing by the participant of an informed consent for surgical treatment and participation in a clinical trial. Exclusion Criteria: * The chronic pain syndrome unrelated to the main proctological disease, exacerbation of concomitant diseases with pain syndrome * Chronic or prolonged use of medications, including narcotic drugs, with analgesic effect for other diseases. * Patients who have contraindications or technical impossibility of performing subarachnoid anesthesia or the full standard volume of surgery for the corresponding disease. * The presence of previously diagnosed mental and neurological disorders. * P…