High effeciency of extracorporeal short wave lithotripsy by the use of intrathecal fentanyl

ABSTRACT

In this study, intrathecal fentanyl was assessed in comparison with two modified general techniques. One of them is the analgesia- sedation with laryngeal mask airway [LMA], which shortens the hospital stay time and the other is the controlled ventilation with periods of apneic oxygenation technique, which decreases the number of shocks needed. The study included 60 patients of both sexes, ASA physical status 1/11 and 20-65 years old. They were divided into three equal groups Group I was given intrathecal [i.th.] 20 ug fentanyl, group II was given analgesia [N2O 60%]-sedation [propofol] and group III was given general controlled anesthesia with periods of apneic oxygenation [Ap O]. The study concluded that 20 ug of intrathecal fentanyl is a safe and effective alternative drug for extracorporeal shock wave lithotripsy [ESWL]. The study also demonstrated that using intrathecal fentanyl for ESWL produces an improved recovery profile [i.e. ambulation, voidance and discharge] and is considered economic, less invasive and less complicated when compared with the analgesia- sedation with LMA and controlled general anesthesia with periods of Ap O techniques. The only side effect was pruritus, which is easily manageable