The effect of carina anesthesia with topical lidocaine in endotracheal suctioning on hemodynamic parameters and strain in adult intubated patients after cardiac surgery (a randomized clinical trial)

Stability of hemodynamics and physiological parameter after open heart surgery is one of the most important reasons for success in surgery. Tracheal suctioning causes hemodynamics and physiological instability. Patients should be sedated after open heart surgery, so they need tracheal suctioning. Therefore, in this study we aimed to investigate the effect of carina anesthesia by topical administration of lidocaine in endotracheal suctioning on hemodynamic parameters and bucking in adult patients after heart surgery.

In a double-blind randomized clinical trial, adult patients undergoing coronary and valve surgery through the fall 2020 in Rajaie Cardiovascular Medical and Research Center were randomly assigned in two groups of 34 patients. Group A received tracheal suction with 4 cc of 2% lidocaine in intratracheally and group B received tracheal suction with 4 cc of 0.9% normal saline intratracheally. Changes in hemodynamic parameters (HR, CVP, MAP), bucking and Spo2, at 2 Minutes before, during and 2 minutes after suctioning were studied at intensive care unit (ICU). Data were analyzed using two-way repeated measures ANOVA.

There was a statistically significant difference between lidocaine group and normal saline group in all hemodynamic parameters and bucking during and 2 minutes after suctioning (p <0.05), but there was no statistically significant difference between the two groups in Spo2 (P>0.05).

According to the results of the study, it can be concluded that the use of intratracheal lidocaine during endotracheal suctioning in cardiac surgery patients reduces changes in hemodynamic parameters and bucking during and after endotracheal suctioning.