Avaliação das variáveis cardiopulmonares, durante a aspiração Endotraqueal com sistema aberto e fechado

Abstract

This article intends to evaluate the interference of endotracheal aspiration in autonomic, cardiopulmonary, ventilatory and hemodynamic parameters in patients with mechanical ventilation admitted to the Intensive Care Unit (ICU) of the University Hospital of Uberlândia (HC-UFU) . The parameters were collected before and after the endotracheal aspiration process with the open and closed systems, in order to compare the impacts caused in both situations. We analyzed 13 patients with mean age of 42.6 years and, in the majority of cases, a diagnosis of traumatic brain injury hospitalized in the Intensive Care Unit. None of the study patients used a neuromuscular blocker. Methods: The procedures were performed in a single day, with interval of 3 hours between one and another aspiration system. Data were collected for approximately 15 minutes. Statistical analysis was performed using the SPSS program. A Shapiro-Wilk test was used to evaluate the normality of the data. Applied analysis between open and closed system variables and Student t test between before and after in each system. Results: There was no difference for any variable that represented any index of cardiac autonomic modulation between the open and closed systems (p> 0.05). However, a difference was found between before and after the open system procedure in expiratory resistance, systolic blood pressure and diastolic blood pressure and in the closed system for systolic blood pressure in patients with mechanical ventilation. Conclusion: The changes produced by open and closed aspiration were similar in cardiorespiratory variables. Systolic and diastolic blood pressure were higher after aspiration with both systems. The open system produced lower expiratory resistance after aspiration.