PubMed Health⌕ Search

Biomedical subjects

Mark Emberton

Publications and source records attributed to Mark Emberton.

At least 19 recordsLinked to original sources
PubMed2007

Role of alpha-blockers in type III prostatitis: a systematic review of the literature.

PURPOSE: We examined the evidence for the effectiveness of alpha-blockers for type III prostatitis. MATERIALS AND METHODS: Studies were identified through a search of MEDLINE, EMBASE and The Cochrane Library as well as a manual search of bibliographies of identified articles and abstract books of recent major international urology conferences. Inclusion criteria included randomized, placebo controlled trials of treatment for type III prostatitis and use of the National Institutes of Health-Chronic Prostatitis Symptom Index outcome measure. RESULTS: Six unique trials in a total of 386 patients met inclusion criteria. One study showed no difference between alpha-blockers and placebo in terms of total or domain National Institutes of Health-Chronic Prostatitis Symptom Index scores and another did not report the p value. All of the remaining 4 studies showed a statistically significant difference in the total score in favor of alpha-blockers, while only 2 showed improved quality of life. Individual treatment effects were statistically significant more often when treatment was administered for 3 months or longer. Despite a common tool for outcome assessment meta-analysis of the results in individual trials was not possible due to differences in the manner of interpreting outcomes and reporting data. CONCLUSIONS: The current published literature is insufficient to conclude with certainty that alpha-blockers are effective for type III prostatitis. Future studies should incorporate uniformity in data collection and reporting with improved health related quality of life as the end point of therapy.

Adrenergic alpha-Antagonists↗
PubMed2006

Self management for men with lower urinary tract symptoms: randomised controlled trial.

OBJECTIVE: To evaluate the effectiveness of self management as a first line intervention for men with lower urinary tract symptoms. DESIGN: Randomised controlled trial. SETTING: A teaching hospital and a district general hospital in London. PARTICIPANTS: 140 men (mean age 63 (SD 10.7) years), recruited between January 2003 and April 2004, referred by general practitioners to urological outpatient departments with uncomplicated lower urinary tract symptoms. INTERVENTIONS: Self management and standard care (n=73) or standard care alone (n=67). The self management group took part in three small group sessions comprising education, lifestyle advice, and training in problem solving and goal setting skills. MAIN OUTCOME MEASURES: The primary outcome measure was treatment failure measured at 3, 6, and 12 months. Symptom severity (international prostate symptom score; higher scores represent a poorer outcome) was used as a secondary outcome. RESULTS: At three months, treatment failure had occurred in 7 (10%) of the self management group and in 27 (42%) of the standard care group (difference=32%, 95% confidence interval 18% to 46%). Corresponding differences in the frequency of treatment failure were 42% (27% to 57%) at six months and 48% (32% to 64%) at 12 months. At three months, the mean international prostate symptom score was 10.7 in the self management group and 16.4 in the standard care group (difference=5.7, 3.7 to 7.7). Corresponding differences in score were 6.5 (4.3 to 8.7) at six months and 5.1 (2.7 to 7.6) at 12 months. CONCLUSIONS: Self management significantly reduced the frequency of treatment failure and reduced urinary symptoms. Because of the large observed benefit of self management, the results of this study support the case for a large multicentre trial to confirm whether self management could be considered as first line treatment for men with lower urinary tract symptoms. TRIAL REGISTRATION: National Research Register N0263115137; Clinical trials NCT00270309 [ClinicalTrials.gov].

Ambulatory Care↗
PubMed2006

The role of anticholinergics in men with lower urinary tract symptoms suggestive of benign prostatic hyperplasia: a systematic review and meta-analysis.

OBJECTIVE: To assess the safety and efficacy of anticholinergics in men with lower urinary tract symptoms (LUTS) suggestive of benign prostatic hyperplasia (BPH) by a systematic review of published reports and a meta-analysis of the reported outcomes. METHODS: We searched Medline, Embase and Cochrane databases (1966-2006), and hand-searched relevant reference lists and conference proceedings, for studies on the use of anticholinergics in men with BPH or bladder outlet obstruction. Eligible studies were assessed for quality and foreign language studies were translated. We collected data on all reported outcomes, conducted meta- analyses on the maximum urinary flow rate (Q(max)), postvoid residual urine volume (PVR) and volume at first contraction, and calculated the acute urinary retention (AUR) rate. We used sensitivity analysis to confirm the findings. RESULTS: We identified five randomized controlled trials (RCTs) and 15 observational studies. Four RCTs incorporating 633 patients were included in the meta-analyses. Anticholinergics did not significantly alter Q(max) (0.1 mL/s, 95% confidence interval, CI, 0.6-0.7). The PVR was increased by 11.6 mL (95% CI 4.5-18.6) although there was no significant difference between AUR rates. The total International Prostate Symptom Scores (IPSS) were not significantly different, but there were improvements for IPSS storage subscores in one RCT. The AUR rate was 0.3% at the 12-week follow-up in 365 men in the RCTs and observational studies. CONCLUSION: Anticholinergic use in men with LUTS suggestive of BPH appears to be safe. Further studies are required to establish efficacy with a suitable precision.

Aged↗
PubMed2006

A systematic review of the reliability of frequency-volume charts in urological research and its implications for the optimum chart duration.

OBJECTIVE: To determine how the reliability of frequency-volume charts (FVCs) vary with their duration when used to assess patients with lower urinary tract symptoms (LUTS) and whether the duration influences patient compliance. METHODS: Peer-reviewed studies involving patients with LUTS were searched systematically, with the selected studies assessed for their internal and external validity and statistical quality. Details of the patients and type of FVC used were summarized, and reliability coefficients and levels of compliance were extracted for commonly assessed FVC variables. RESULTS: In all, 13 studies were considered to meet the review criteria; they assessed the reliability of FVCs lasting 1, 2, 3 and 7 days. The reliability coefficients for 3- and 7-day FVCs were generally >0.8; those for shorter charts tended to be lower, but strong conclusions could not be drawn due to study limitations. There was no obvious relationship between the duration of the FVC and the level of compliance. CONCLUSIONS: Strong recommendations cannot be made about what duration of an FVC should be used to assess or monitor patients with LUTS. The current consensus on using FVCs of > or = 3 days seems to be the most defensible policy, but more research of high quality is required, especially into the relationship of FVC duration with compliance.

Adult↗
PubMed2006

The effect of neoadjuvant androgen suppression on prostate cancer-related outcomes after high-intensity focused ultrasound therapy.

OBJECTIVE: To explore the effect of neoadjuvant androgen suppression (AS) compared to no AS on cancer-related outcomes after radical high-intensity focused ultrasound (HIFU) therapy for men with presumed organ-confined prostate cancer. PATIENTS AND METHODS: Between January 1999 and January 2005, 250 patients underwent HIFU for presumed localized adenocarcinoma of the prostate; 154 had received neoadjuvant hormonal therapy and 96 had not. The primary outcome measure was treatment failure, as defined by the presence of prostate cancer on the biopsy taken 6 months after HIFU. Multiple logistic regression was used to examine relationships between the use of HIFU with and with no neoadjuvant AS and treatment failure. RESULTS: The treatment failure rate was slightly lower in patients receiving neoadjuvant AS (31% vs 34%), but this was not statistically significant (P = 0.119). CONCLUSION: In this unrandomized comparison between neoadjuvant or no AS before HIFU for men with presumed organ-confined prostate cancer, there appeared to be little if any benefit associated with the previous administration of AS.

Adenocarcinoma↗
PubMed2006

The thermo-expandable metallic stent for managing benign prostatic hyperplasia: a systematic review.

OBJECTIVES: To systematically review published reports of the safety, effectiveness and durability of a self-expanding metallic prostatic stent (Memokath, Engineers & Doctors A/S Ltd., Denmark) in patients with benign prostatic hyperplasia (BPH) who are unfit for surgery. METHODS: We systematically searched the Medline and Embase databases from 1992. The reference lists of included studies and the bibliographies of review articles were also searched. We contacted the manufacturer of Memokath for additional information. The primary outcomes were treatment failure (stent removal, replacement or repositioning) and urological symptom scores. Secondary outcomes were urodynamic indices and minor complications. Two reviewers independently assessed the methodological quality of the studies and extracted data. Data were synthesized using narrative techniques. RESULTS: In all, 14 case series described the use of the Memokath stent in 839 men with BPH. All patients were at high operative risk. Most studies were of poor quality with an inadequate follow-up. Treatment failure rates were 0-48% but the duration of follow-up was often unclear. Five studies reported International Prostate Symptom Scores and found reductions of 11-19 points after stent insertion. All seven studies that reported on maximum urinary flow rates found that these increased, and the four that described residual urine volumes found that these decreased. Minor complications were inconsistently reported. CONCLUSIONS: The Memokath stent can provide an effective treatment for BPH in men at high operative risk; it also appears to be safe, but inadequate follow-up does not allow firm conclusions on stent durability.

Aged↗
PubMed2006

How good is MRI at detecting and characterising cancer within the prostate?

OBJECTIVES: As well as detecting prostate cancer, it is becoming increasingly important to estimate its location, size and grade. We aim to summarise current data on the efficacy of magnetic resonance imaging (MRI) in this setting. METHODS: Literature review of original research correlating MRI and histologic appearances. RESULTS: Estimates of the sensitivity of MRI for the detection of cancer vary widely depending on method of analysis used and the definition of significant disease. Recent estimates using T2-weighted sequences and endorectal coils vary from 60% to 96%. Several groups have convincingly shown that dynamic contrast enhancement and spectroscopy each improve detection and that the sensitivity of MRI is comparable to and may exceed that of transrectal biopsy. Specificity is not yet good enough to consider the use of MRI in screening. High-grade and large tumours are detected significantly more often with both T2 sequences and spectroscopy. Estimation of size is improved by dynamic contrast and spectroscopy, but errors of >25% are common. CONCLUSIONS: The sensitivity of MRI has improved to the point that it has potential in several new areas: targeting of biopsies, monitoring of disease burden both during active surveillance and after focal therapy, and exclusion of cancer in patients with a raised prostate-specific antigen level.

Diagnosis, Differential↗
PubMed2006

Charlson scores based on ICD-10 administrative data were valid in assessing comorbidity in patients undergoing urological cancer surgery.

BACKGROUND AND OBJECTIVES: Adjustment for comorbidity is an essential component of any observational study comparing outcomes. We evaluated the validity of the Charlson comorbidity score based on ICD-10 codes in patients undergoing urological cancer surgery within an English administrative database. STUDY DESIGN AND SETTING: Patients who underwent radical urological cancer surgery between 1998 and 2002 in the English National Health Service were identified from the Hospital Episode Statistics database (N = 20,138). ICD-9-CM codes defining comorbid diseases according to the Deyo and Dartmouth-Manitoba adaptations of the Charlson comorbidity score were translated into ICD-10 codes. RESULTS: Charlson scores derived by the ICD-10 translation of the Deyo and Dartmouth-Manitoba adaptations were identical in 16,623 patients (83%; kappa = .63). For both adaptations, ICD-10 scores increased with age, were higher in patients admitted on an emergency basis, and predicted short-term outcome. Addition of either the ICD-10 Charlson Deyo or Dartmouth-Manitoba score to risk models containing age and sex to predict in-hospital mortality resulted in a better model fit but only in small improvements of the predictive power. CONCLUSION: The ICD-10 translations of the Deyo and Dartmouth-Manitoba adaptations performed similarly in risk models predicting hospital mortality following urological cancer surgery. Adjustment for comorbidity over and above age and sex alone does not seem to provide a large improvement.

Aged↗
PubMed2006

Response to daily 10 mg alfuzosin predicts acute urinary retention and benign prostatic hyperplasia related surgery in men with lower urinary tract symptoms.

PURPOSE: We analyzed the influence of treatment response on the risk of acute urinary retention and benign prostatic hyperplasia related surgery in 5,792 men complaining of lower urinary tract symptoms who were treated for 6 months with the selective alpha1-blocker alfuzosin at 10 mg once daily. MATERIALS AND METHODS: The influence of dynamic variables (International Prostate Symptom Score change and bother during treatment) and baseline variables (patient age, prior acute urinary retention managed conservatively, prostate specific antigen, International Prostate Symptom Score and bother severity) on the risk of acute urinary retention and benign prostatic hyperplasia related surgery was estimated using the Kaplan-Meier method and log rank test. The associated HR and 95% CI were calculated using Cox proportional hazard models. RESULTS: During alfuzosin treatment International Prostate Symptom Score improved by 3 or greater and greater than 6 points in 74.8% and 50.3% of men, respectively. In this unselected population, including 3.8% with prior unoperated acute urinary retention, the rate of acute urinary retention and benign prostatic hyperplasia related surgery events during treatment was low (0.5% and 1.1%, respectively). Men with stable or worsening International Prostate Symptom Score were at increased risk for acute urinary retention or surgery (HR 3.75, 95% CI 1.58 to 8.89, p = 0.003 and HR 4.71, 95% CI 2.69 to 8.24, p <0.001, respectively). Prior acute urinary retention was a strong predictor of acute urinary retention relapse and surgery (HR 10.35, 95% CI 4.29 to 26.08, p <0.001 and HR 3.57, 95% CI 1.59 to 7.98, p = 0.002, respectively). Bother score greater than 3 during treatment was the strongest predictor of surgery (HR 7.61, 95% CI 4.16 to 13.93, p <0.001). Prostate specific antigen had much less predictive value. CONCLUSIONS: This 6-month real life practice study shows that alfuzosin is associated with a low incidence of acute urinary retention and benign prostatic hyperplasia related surgery. It also suggests that responder status is the most important predictor of acute urinary retention and benign prostatic hyperplasia related surgery. Thus, first line treatment with alfuzosin may help select patients at risk for benign prostatic hyperplasia progression to optimize treatment.

Acute Disease↗
PubMed2006

Incidence of primary and recurrent acute urinary retention between 1998 and 2003 in England.

PURPOSE: We report how the incidence of primary and recurrent acute urinary retention changed in England between 1998 and 2003. In addition, we present data on changes with time in the use of prostatectomy after acute urinary retention and recurrent acute urinary retention. MATERIALS AND METHODS: Data were extracted from the Hospital Episode Statistics database of the Department of Health in England. Patients were included in the study if an International Classification of Diseases, Tenth Revision code for acute urinary retention or an operative procedure code for transurethral prostate resection was present in any diagnosis or procedure fields of the Hospital Episode Statistics database. A total of 165,527 men were identified to have been hospitalized with acute urinary retention in the study period. RESULTS: The incidence of primary acute urinary retention was 3.06/1,000 men yearly. Acute urinary retention was spontaneous in 65.3% of cases. The incidence of acute urinary retention decreased from 3.17/1,000 men yearly in 1998 to 2.96/1,000 yearly in 2003. Surgical treatment following spontaneous acute urinary retention decreased 20% from 32% in 1998 to 26% in 2003. This trend coincided with a 20% increase in the rate of recurrent acute urinary retention. CONCLUSIONS: The slight decrease in the incidence of primary acute urinary retention suggests that the shift away from surgical treatment for benign prostatic hyperplasia has not resulted in an increase in acute urinary retention. The increase in recurrent acute urinary retention suggests that the observed decrease in surgery after acute urinary retention may have put more men at risk for acute urinary retention recurrence.

Acute Disease↗
PubMed2006

To what extent do real life practice studies differ from randomized controlled trials in lower urinary tract symptoms/benign prostatic hyperplasia?

PURPOSE OF THE REVIEW: To compare the real-life practice studies and randomized controlled trials on benign prostatic hyperplasia in order to understand the applications of the data from the two types of study. RECENT FINDINGS: Until recently, much of the available information on benign prostatic hyperplasia has come from randomized controlled trials conducted by secondary care urologists on selected populations of patients, who are likely to represent the more symptomatic among the cohort of men with lower urinary tract symptoms in the community. The strict inclusion criteria in these trials led to uncertainty about the applicability of the results to community populations. Moreover, as patients in randomized controlled trials are specially recruited, rather than being drawn from a general population of men with lower urinary tract symptoms, the calculations of incidence and prevalence rates may not be possible. In the last few years, there have been a few important real-life practice studies such as the Triumph project, the Quadraet study and the ALF-ONE study, which have provided very useful data regarding the incidence and prevalence of lower urinary tract symptoms/benign prostatic hyperplasia, the incidence of acute urinary retention, the impact of therapy on the risk of surgery related to benign prostatic hyperplasia and the predictors of disease progression during treatment with alpha-blocker. SUMMARY: As the results from randomized controlled trials cannot always be generalized to daily urological practice, it is important to complement them with data made available by the real-life practice studies. In order to do that, the salient features in the methodology of both types of study must be understood.

Humans↗
PubMed2006

Long-term efficacy and safety of alfuzosin 10 mg once daily: a 2-year experience in 'real-life' practice.

OBJECTIVE: To assess the 2-year efficacy and safety of alfuzosin 10 mg once daily, a selective alpha(1)-adrenoceptor antagonist, in men complaining of lower urinary tract symptoms (LUTS) suggestive of benign prostate hyperplasia (BPH), in 'real life' practice. PATIENTS AND METHODS: In all, 839 European men with LUTS (mean age 67.3 years) were enrolled by general practitioners in a 2-year open-label study with alfuzosin 10 mg once daily. They were asked to complete the International Prostate Symptom Score (IPSS), its appended eighth question (bother score), and the five domains (sexual drive, erection, ejaculation, problem assessment, and overall satisfaction) of the Brief Male Sexual Function Inventory (BSFI). The results were analysed at the endpoint in the intent-to-treat population. RESULTS: At the endpoint the total IPSS improved by 7 points (-38.5%) from baseline (P < 0.001) with 76.9% and 49.7% of men having an improvement of > or = 3 points and >6 points, respectively. There were also significant improvements in nocturia (-0.9, -30%; P < 0.001) and bother score (-1.8, -43%; P < 0.001) from baseline. Most patients (56%) perceived symptom relief within the first 2 weeks of treatment. All BSFI domains significantly improved from baseline (P < 0.05; <0.001 for overall satisfaction) and these improvements were more marked in men with severe LUTS at baseline. Alfuzosin 10 mg was well tolerated; the most common adverse event related to vasodilatation was dizziness/postural dizziness (3.1%). Ejaculatory disorders were uncommon (0.3%). Changes in blood pressure remained marginal, including in elderly men and those receiving antihypertensive agents. CONCLUSIONS: Alfuzosin 10 mg administered for 2 years in real practice is effective in improving LUTS and quality of life, and is well tolerated from a cardiovascular perspective, including in elderly men and those receiving antihypertensive co-medication. Ejaculatory disorders are uncommon. Alfuzosin may even slightly improve various domains of sexual function, such as sexual drive, erection, ejaculation and satisfaction with sexual life.

Adrenergic alpha-Antagonists↗
PubMed2006

Definition of at-risk patients: dynamic variables.

Benign prostatic hyperplasia (BPH) is a progressive disease, mainly characterized by a deterioration of symptoms over time, but also the occurrence in some patients of serious outcomes such as acute urinary retention (AUR) and the need for BPH-related surgery. The goals of therapy are not only to improve symptoms and restore an acceptable quality of life, but also to identify patients at risk of disease progression, to optimize their management. Baseline variables such as age, severe lower urinary tract symptoms (LUTS), a low peak flow rate, increased postvoid residual urine volume (PVR), enlarged prostate and high serum prostate-specific antigen (PSA) levels have been identified as predictors of AUR and BPH-related surgery in community-based longitudinal studies. In the placebo arm of controlled studies, baseline serum PSA level and to a lesser extent prostate size consistently predict the risk of AUR and BPH-related surgery, while quantitative variables such as baseline symptom severity and peak flow rate behave paradoxically and are poor predictors of BPH progression. There is increasing evidence from longitudinal community-based studies and the Medical Therapy of Prostatic Symptoms study that dynamic variables (e.g. symptom and PVR worsening) serve as good predictors of AUR in men with LUTS suggestive of BPH. The 'real-life' practice study Alf-One also suggests that men not responding to alfuzosin treatment (International Prostate Symptom Score stable or worsening, and bother score >3 under treatment) have a greater risk of having AUR or requiring BPH-related surgery. First-line treatment with alfuzosin might thus help to select patients at risk of BPH progression, to optimize their management.

Acute Disease↗
PubMed2006

The beneficial effect of alfuzosin 10 mg once daily in 'real-life' practice on lower urinary tract symptoms (LUTS), quality of life and sexual dysfunction in men with LUTS and painful ejaculation.

OBJECTIVE: To determine the efficacy and safety of the selective alpha(1)-blocker alfuzosin in men with lower urinary tract symptoms (LUTS) and painful ejaculation, compared with those with LUTS only, as painful ejaculation is one of the most prevalent, differentiating and bothersome symptoms in men with chronic prostatitis/chronic pelvic pain syndrome. PATIENTS AND METHODS: In all, 4857 sexually active men with LUTS had an evaluable answer to the Danish Prostate Symptom Score for Sexual Symptoms question related to pain/discomfort on ejaculation at enrolment in a 6-month open-label study with alfuzosin 10 mg once daily. Efficacy was analysed at the endpoint in the intent-to-treat population. RESULTS: Of the 4857 men, 997 (20.5%) had pain/discomfort on ejaculation and 889/997 (89.2%) considered it was a problem. At inclusion, men with painful ejaculation had more severe LUTS and bother than men with LUTS only. Erectile dysfunction (ED) and reduced ejaculation were more prevalent (74.5% and 71.9%, respectively) and bothersome in men with painful ejaculation than in those with no pain (59.6% and 57.4%, respectively). Under alfuzosin treatment, all variables in both groups significantly improved from baseline; men with painful ejaculation compared to LUTS-only had similar improvements in weighted scores for LUTS (-7.8 vs -7.7), bother (-1.7 vs -1.7), and reduced ejaculate (-0.5 vs -0.4) but greater improvements in ED (-0.6 vs -0.4; P < 0.001). The weighted score for painful ejaculation decreased from 2.2 to 0.8 (P < 0.001). Alfuzosin was well tolerated in both groups. CONCLUSIONS: This 6-month open-label study suggests that alfuzosin 10 mg once daily significantly improves LUTS, quality of life and sexual function in men with prostatitis-like symptoms, and is well tolerated.

Adrenergic alpha-Antagonists↗
PubMed2006

To what extent does the prostate-specific antigen nadir predict subsequent treatment failure after transrectal high-intensity focused ultrasound therapy for presumed localized adenocarcinoma of the prostate?

OBJECTIVE: To explore the association between the prostate-specific antigen (PSA) nadir after transrectal high-intensity focused ultrasound (HIFU) therapy for organ-confined prostate cancer and subsequent treatment failure, as defined by the presence of residual disease at biopsy 6 months after treatment. PATIENTS AND METHODS: Between January 1999 and January 2005, 115 patients in a Japanese hospital were treated using a transrectal HIFU system (Sonablate, Focus Surgery, IN, USA) for presumed localized adenocarcinoma of the prostate. All treatments were primary and none of the patients had received hormone therapy. The PSA level was measured at 2-monthly intervals and all patients had a transrectal prostate biopsy taken at 6 months. Multiple logistic regression was used to examine the relationship between PSA nadir and treatment failure, as defined by the presence of disease at biopsy. RESULTS: The PSA nadir was strongly associated with treatment failure (P < 0.001). Patients with a PSA nadir of 0.0-0.2 ng/mL had a treatment failure rate of only 11% (four of 36), compared to 46% (17 of 37) in patients with a PSA nadir of 0.21-1.00 ng/mL and 48% (20 of 42) with a PSA nadir of >1.0 ng/mL. In addition, the PSA nadir was strongly associated with both preoperative PSA level and residual prostate volume. CONCLUSION: There is a clear and intuitive association between the PSA nadir and the risk of treatment failure after HIFU. These data can be used to predict the risk of residual disease in patients with prostate cancer undergoing HIFU therapy. They can also be used to inform where the target PSA nadir should be set for this novel therapy.

Adenocarcinoma↗