Background: Extracorporeal shock wave lithotripsy is an effective non-invasive method for
managing urinary tract calculi. The application of evidence based guidelines in combination with
extracorporeal shock wave lithotripsy in dealing with urolithiasis patient can provide simple and more
effective measure to improve clinical outcomes and reduce risk of stone recurrence. Aim of the
study: Was to evaluate effect of evidence-based guidelines on health outcomes among patients
undergoing extracorporeal shock waves lithotripsy for urolithiasis. Design: A quasi experimental
study design was utilized. Setting: The study was carried out at the Urology Department in Benha
University Hospital. Subjects: A purposive sample of 80 conscious patients undergoing
extracorporeal shock wave lithotripsy for urolithiasis randomly divided into control group (n=40) &
intervention group (n=40). Tools of data collection: Two tools were used, Tool I: A structured
interview questionnaire involving socio-demographic characteristics, medical and surgical history
data and knowledge assessment questionnaire, Tool II: Extracorporeal shock wave lithotripsy health
outcomes assessment tool. Results: Patients' knowledge level regarding Extracorporeal shock wave
lithotripsy was significantly higher among intervention group than control group after implementing
guidelines. As well as there was a significant statistical differences between both groups regarding
pain score in term of pain improvement to be finally (1.28±1.6&4.10±2.2, respectively). Also, there
was significantly lower incidence of complications as well as higher quality of life score among
intervention group than control group at p value =<0.05 after three months of guidelines
implementation. Conclusion: Implementation of evidence-based guidelines was effective in
improving patients' health outcomes with lower pain score, lower incidence of complications and a
positive impact on patients' quality of life among intervention group than control group. In the light
of significantly improved knowledge level among intervention group compared to control group.
Recommendations: Continuous evaluation of patients' knowledge regarding post extracorporeal
shock wave lithotripsy instructions periodically to determine the effect of guidelines implementation
during follow up periods.