***TASK***
the task is to simplify the input abstract of a biomedical literature

***INPUT***
the input is the abstract of a biomedical literature

***OUTPUT***
the output is the simplified abstract for the input abstract of a biomedical literature

***DOCUMENTATION***

***EXAMPLES***

Input: We included seven trials involving 800 women. The comparisons revealed a very high clinical heterogeneity. As a result of the heterogeneity in the randomisation unit, we did not combine trials but reported the individual trial results in the ‘Data and analysis’ section and in the text. Half of trials have unclear or high risk of bias in several domains. We did not find any trial reporting data about maternal mortality. In terms of postoperative pain, PCB does not improve the control of postoperative pain when it is compared against sedation/analgesia or versus no anaesthesia/no analgesia. In the comparison of PCB with lidocaine versus PCB with saline solution, significant differences favouring the group with lidocaine were found in one trial (moderate or severe postoperative pain) (risk ratio (RR) 0.32; 95% confidence interval (CI) 0.18 to 0.59). When opioids were used, postoperative nausea and vomiting was more frequent in two trials comparing those versus PCB. In terms of requirement of blood transfusion, two trials showed conflicting results. Particular considerations that influence the choice of anaesthesia for this procedure such as availability, effectiveness, safety, side effects, practitioner's choice, costs and woman's preferences of each technique should continue to be used until more evidence supporting the use of one technique or another.
Output:

We included seven trials involving 800 women. None of the included studies reported any maternal mortality. We did not combine the results of the trials because the trials were very different in the clinical interventions used and how the outcomes were assessed. One study reported higher maternal satisfaction with the use of general anaesthesia than sedation and analgesia. Paracervical block did not improve the control of postoperative pain when compared against sedation and analgesia. More nausea and vomiting were reported when opioid drugs were used. Currently, the levels of postoperative pain experienced by women undergoing surgical evacuation of incomplete miscarriage are not completely relieved. Further studies in this context should be conducted to address this question. Key factors that influence the choice of anaesthesia include availability, effectiveness, safety, side effects, and costs. Other factors include patient preference, practitioner choice, facility resources and medical indications.