This meta-analysis evaluated the efficacy and safety of periprostatic nerve block (PPNB) and intrarectal local anesthestic (IRLA) gel in alleviating pain during prostate biopsy. Electronic databases MEDLINE, Cochrane Central Register of Controlled Trials and EMBASE were searched to identify all randomized controlled trials comparing PPNB with periprostatic placebo injection, no injection or with IRLA. Studies for inclusion were identified and extracted by two authors independently. The main outcome measure was patients' assessment of mean pain scores on a 10-point scale at the end of the biopsy procedure. Secondary outcomes were complications and adverse events. Continuous data from the trials were combined by calculating the weighted mean difference (WMD) with its 95% confidence interval. In total, 25 studies met the inclusion criteria. Twenty studies involving 1685 patients compared PPNB with either no anesthesia or with placebo injection controls, showing a significant reduction in pain score in the anesthetic group (WMD À2.09, 95% CI À2.44 to À1.75, Po0.00001). Five studies with 466 patients compared IRLA and control. Although IRLA was associated with pain reduction, the effect size was not statistically significant (WMD À0.22, 95% CI À0.56 to 0.12). Six studies with 872 patients compared PPNB with IRLA, showing a significant pain reduction in the former group (WMD À1.53, 95% CI À2.67 to À0.39, P ¼ 0.008). No trials reported an increase in complications in the treatment arms. In conclusion, the evidence from randomized controlled trials shows that local anesthetic given as a PPNB, but not as an intrarectal instillation, is effective and safe in alleviating pain from transrectal ultrasound biopsy of the prostate.

sociodemographic and health variables were recorded. RESULTSData from 1134 women (aged 20-95 years) and 1139 men (aged 20-92 years) were analysed; the overall prevalence of nocturia (one or more voids/night) was 55.5%, with an increasing proportion in older groups ( P < 0.01). Women had nocturia significantly ( P = 0.015) more often than men (58% vs 53%), and it was positively associated with poor health, with the highest odds ratios (95% confidence interval) for diabetes mellitus of 2.0 (1.3-3.1), for renal disease of 6.4 (2.3-18.2), and for strokes of 3.1 (1.1-9.2). In both men and women, the median IPSS in patients with nocturia was significantly higher than that in patients without nocturia ( P < 0.001). For individuals waking once a night, only 9.5% considered nocturia a problem and 13.5% complained of sleep disturbances; these values increased to 36% and 40% for individuals waking up twice or more /night. CONCLUSIONNocturia is a common condition amongst Singaporean adults, especially in the elderly; it has strong associations with poor health and other lower urinary tract symptoms. The degree of nocturia determines whether patients are likely to be bothered by it or have sleep disturbance, which will influence their help-seeking behaviour.

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