Affiliation:
1. Ryazan State Medical University named after Academician I.P. Pavlov, Ryazan, Russian Federation
Abstract
Abstract. The work is devoted to the study of arterial blood gas parameters and comparison of capnographic determination of carbon dioxide at the end of exhalation (EtCO2) and the real pressure of carbon dioxide in arterial blood (paCO2) depending on the degree of morbid obesity in patients who were to undergo surgical bariatric interventions in 2012-2021. The study included 61 patients, whose age ranged from 22 to 69 years, body mass index from 40 to 91 kg/m2. The patients were divided into 3 groups depending on the degree of morbid obesity: group 1 - 20 patients with body mass index ≥ 40 (grade 3); group 2 - 25 patients with body mass index ≥ 50 (grade 4); group 3 - 16 patients with body mass index ≥ 60 (grade 5). Based on the data obtained, it was found that the state of the arterial blood gas composition indicates the presence of respiratory function disorders in patients with morbid obesity, which significantly reduce the compensatory capabilities of the body. Arterial hemoglobin saturation with oxygen (SaO2) tended to decrease, reaching a minimum in patients of the 1st group. The studied parameters of the arterial blood gas composition in patients of group 1 tended to worsen, and in patients of groups 2 and 3 they significantly worsened with an increase in the degree of morbid obesity. The maximum disruption of arterial blood gases was found in patients with a body mass index ≥ 60. The partial pressure of carbon dioxide at the end of exhalation (EtCO2) in patients with morbid obesity does not correspond to the partial pressure of carbon dioxide in arterial blood (paCO2).