MAIN RESULTS For the treatment of primary dysmenorrhoea there is some evidence of the effectiveness of uterine nerve ablation ( UNA ) when compared to a control of no treatment .
The comparison between UNA with presacral neurectomy ( PSN ) for primary dysmenorrhoea showed no significant difference in pain relief in the short term , however long term PSN was shown to be significantly more effective .
The treatment of UNA combined with surgical treatment of endometrial implants versus surgical treatment of endometriosis alone showed that the addition of UNA did not aid pain relief .
For PSN combined with endometriosis treatment versus endometriosis treatment alone there was also no overall difference in pain relief , although the data suggests a significant difference in relief of midline abdominal pain .
Adverse events were significantly more common for presacral neurectomy , however the majority were complications such as constipation , which may spontaneously improve .
REVIEW ER 'S CONCLUSIONS There is insufficient evidence to recommend the use of nerve interruption in the management of dysmenorrhoea , regardless of cause .
BACKGROUND Dysmenorrhoea is the occurrence of painful menstrual cramps of uterine origin and is a very common gynaecological complaint .
Medical therapy for dysmenorrhoea includes oral contraceptive pills ( OCP ) and nonsteroidal anti-inflammatory drugs ( NSAIDS ) which both act by suppressing prostagl and in levels .
While these treatments are very successful there is still a 20 - 25 % failure rate and surgery has been an option for cases of dysmenorrhoea that fail to respond to medical therapy .
Uterine nerve ablation ( UNA ) and presacral neurectomy ( PSN ) are two surgical treatments that have become increasingly utilised in recent years .
These procedures both interrupt the majority of the cervical sensory nerve fibres , thus diminishing uterine pain .
Uncontrolled studies have supported the use of these procedures for primary dysmenorrhoea however both operations only partially interrupt some of the cervical sensory nerve fibres in the pelvic area ; therefore dysmenorrhoea associated with additional pelvic pathology may not always benefit from this type of surgery .
OBJECTIVES To assess the effectiveness of surgical interruption of pelvic nerve pathways as treatment for primary and secondary dysmenorrhoea , and to determine the most effective surgical treatment .
Deriving dichotomous outcome measures from continuous data in randomised controlled trials of analgesics: verification from independent data
Abstract A previously established relationship for deriving dichotomous from continuous information in r and omised controlled trials ( RCTs ) of analgesics has been tested using an independent data set . Individual patient information from 18 RCTs of parallel‐group design in acute postoperative pain ( after abdominal , gynaecological and oral surgery ) was used to calculate the percentage of the maximum possible pain relief score  ( % maxTOTPAR ) and the proportion of patients with > 50%maxTOTPAR for the different treatments . The relationship between the measures was investigated in 85 treatments with over 3400 patients . In 80 of 85 treatments ( 94 % ) agreement between calculated and actual number of patients with > 50%maxTOTPAR was within four patients per treatment and in 72 ( 85 % ) was within three ( average of 40 patients per treatment , range 21–58 patients ) . Summing the positive and negative differences between actual and calculated numbers of patients with > 50%maxTOTPAR gave an average difference of 0.30 patients per treatment arm . Reports of RCTs of analgesics frequently describe results of studies in the form of mean derived indices , rather than using discontinuous events , such as number or proportion of patients with 50 % pain relief . Because mean data inadequately describe information with a non‐normal distribution , combining mean data in systematic review s may compromise the results . Showing that dichotomous data can reliably be derived from mean data in acute pain studies enables data published as means to be used for quantitative systematic review s which require data in dichotomous form
MAIN RESULTS For the treatment of primary dysmenorrhoea there is some evidence of the effectiveness of uterine nerve ablation ( UNA ) when compared to a control of no treatment .
The comparison between UNA with presacral neurectomy ( PSN ) for primary dysmenorrhoea showed no significant difference in pain relief in the short term , however long term PSN was shown to be significantly more effective .
The treatment of UNA combined with surgical treatment of endometrial implants versus surgical treatment of endometriosis alone showed that the addition of UNA did not aid pain relief .
For PSN combined with endometriosis treatment versus endometriosis treatment alone there was also no overall difference in pain relief , although the data suggests a significant difference in relief of midline abdominal pain .
Adverse events were significantly more common for presacral neurectomy , however the majority were complications such as constipation , which may spontaneously improve .
REVIEW ER 'S CONCLUSIONS There is insufficient evidence to recommend the use of nerve interruption in the management of dysmenorrhoea , regardless of cause .
BACKGROUND Dysmenorrhoea is the occurrence of painful menstrual cramps of uterine origin and is a very common gynaecological complaint .
Medical therapy for dysmenorrhoea includes oral contraceptive pills ( OCP ) and nonsteroidal anti-inflammatory drugs ( NSAIDS ) which both act by suppressing prostagl and in levels .
While these treatments are very successful there is still a 20 - 25 % failure rate and surgery has been an option for cases of dysmenorrhoea that fail to respond to medical therapy .
Uterine nerve ablation ( UNA ) and presacral neurectomy ( PSN ) are two surgical treatments that have become increasingly utilised in recent years .
These procedures both interrupt the majority of the cervical sensory nerve fibres , thus diminishing uterine pain .
Uncontrolled studies have supported the use of these procedures for primary dysmenorrhoea however both operations only partially interrupt some of the cervical sensory nerve fibres in the pelvic area ; therefore dysmenorrhoea associated with additional pelvic pathology may not always benefit from this type of surgery .
OBJECTIVES To assess the effectiveness of surgical interruption of pelvic nerve pathways as treatment for primary and secondary dysmenorrhoea , and to determine the most effective surgical treatment .