The Journal of urology
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The Journal of urology · Jan 1996
Randomized Controlled Trial Comparative Study Clinical TrialPatient controlled analgesia for shock wave lithotripsy: the effect of self-administered alfentanil on pain intensity and drug requirement.
Second generation lithotriptors offer immersion-free treatment and a decrease in shock wave induced pain. Pain sensations caused by advanced lithotriptors vary widely and have a significant impact on clinical management. We tested patient controlled analgesia during extracorporeal shock wave lithotripsy (ESWL) and quantified analgesic requirements by means of patient controlled analgesia during ESWL of renal stones. ⋯ Patient controlled analgesia increases pain tolerance, decreases narcotic requirements, simplifies ESWL as an outpatient procedure and can be used to quantify analgesic requirements during lithotripsy. Pain and tolerance thresholds of electrocutaneous sensitivity are sensitive markers of pain tolerance during lithotripsy, which may be more pronounced in male patients.