Increase in life expectancy in the world leads to an increase in the number of patients with multimorbidity who will require surgical intervention and anesthesia in the future. The desire of specialists to meet the high standards of clinical guidelines when performing medical interventions is often associated with the risk of complications, especially when providing emergency medical care. Complications during surgical interventions and anesthesia can be observed in institutions of any level and when providing care by any specialists.The aim. To assess the main risk factors that can cause complications when providing anesthesia.Materials and methods. The study was conducted in accordance with international reporting requirements for reviews (Preferred Reporting Items for Systematic Reviews and Meta-Analyses). The search was performed in PubMed and Cochrane Controlled Clinical Trials Register. The method of searching by references was used to select the articles. The search strategy did not include limitations of the language, type and date of the article. Inclusion criteria: full-text publications devoted to the influence of risk factors on the incidence of complications when providing anesthesia care. Exclusion criteria: brief summaries; abstracts without a full-text version; publications without key words.Results. The review assessed the most common risk factors causing complications during anesthesia and ways to reduce them.