Overactive bladder: the importance of tailoring treatment to the individual patient

A patient-reported, non-interventional, cross-sectional discrete choice experiment to determine treatment attribute preferences in treatment-naïve overactive bladder patients in the US

PURPOSE

Many pharmacotherapeutic treatment options are available for the symptoms of overactive bladder (OAB), each offering varying efficacy, safety, and tolerability profiles that must be carefully considered when selecting treatment. The objective of the present study was to characterize pharmacotherapy treatment preferences of individuals with symptoms of OAB and to examine how preferences differ by both patient characteristics and disease burden metrics.

PATIENTS AND METHODS

Patient preferences for OAB treatment attributes were examined using a discrete choice experiment (DCE). Attributes were identified through literature review, clinical relevance, and input from patients. Eligible respondents were required to be ≥18 years of age, have a self-reported physician OAB diagnosis or have self-reported symptoms of OAB, and be naïve to pharmacotherapy or invasive OAB treatments. A hierarchical Bayesian random-effects-only model was used to estimate the mean relative preference weights and mean relative importance scores of treatment attributes. Multivariable linear regression models with backward selection were used to analyze the differences in relative importance scores by demographic characteristics and disease burden-related metrics.

RESULTS

In total, 514 individuals participated in the study. Most respondents were <65 years of age (66.0%), female (68.5%), and reported moderate/severe OAB symptoms (64.2%). Overall, respondents placed the greatest importance on drug delivery method, with a preference for oral and patches over injectables, followed by efficacy defined as reduced daytime micturition and out-of-pocket cost. Multivariable linear regression analyses revealed that females were less likely to select injectables, that symptom control of incontinence was the most important to respondents who reported greater work productivity loss, and that out-of-pocket cost was the most important to respondents with moderate/severe OAB.

CONCLUSION

OAB treatment preferences vary depending on individual patient characteristics and disease severity. Overall, drug delivery method, reduced daytime micturition, and out-of-pocket costs were the most important treatment attributes among treatment-naïve individuals with symptoms of OAB. Preferences for OAB treatment were also found to vary depending on patient demographics and disease comorbidities, which has previously not been examined.

The Problem of Polypharmacy in Female Patients with Overactive Bladders - Cross-Sectional Study in a Specialist Outpatient Department

Background: The consumption of certain drugs can cause urinary incontinence. The aim of this study is to determine the frequency of consumption of drugs that can favour incontinence, the incidence of polypharmacy and the incidence of potentially dangerous drug-drug interactions in female patients suffering from overactive bladder (OAB) who presented to a urogynaecological outpatient department. Methods: We undertook a retrospective case series study. The data from 100 female patients who attended the urogynaecological outpatient department of the Vienna General Hospital [VGH; Allgemeinen Krankenhauses Wien (AKH)] in the period from 20. 07. 2010 to 30. 08. 2011 were evaluated. The patients suffered either from an OAB or mixed incontinence with predominantly urge components. Among other factors, we were interested in the drugs taken for longer periods of time as well as the general and the urogynaecological case histories. 15 parameters were recorded: age, BMI, menopausal status, parity, pelvic organ prolapse, DIAPPERS criteria (delirium, infection (urinary), atrophic urethritis and vaginitis, pharmaceuticals, psychological disorders (especially depression), excessive urine output, restricted mobility, stool impaction), drug side effects and drug-drug interactions. A descriptive statistical analysis was performed. The drugs were checked with the help of a drug information system (Intranet-KH [V 6.0]). Of particular interest was the consumption of drugs that could favour urinary incontinence as an adverse side effect. In addition the frequency of polypharmacy and the frequency of potentially health-threatening drug combinations were registered. Results: 57 % of the patients consumed at least one drug that could reinforce urinary incontinence. The frequency of polypharmacy was 38 %. In 45 % of the patients the possibility for health-damaging interactions existed as a result of the consumed drugs. Conclusion: The frequencies of consumption of drugs that can favour urinary incontinence and of polypharmacy are high among the patients who attend a specialist outpatient department for urinary incontinence. This emphasises the importance of a complete drug history in the diagnostic work-up for urinary incontinence.

Rationale for the use of anticholinergic agents in overactive bladder with regard to central nervous system and cardiovascular system side effects

PURPOSE

Central nervous system (CNS) and cardiovascular system (CVS) side effects of anticholinergic agents used to treat overactive bladder (OAB) are underreported. Hence, this review aimed to focus on the mechanisms of CNS and CVS side effects of anticholinergic drugs used in OAB treatment, which may help urologists in planning the rationale for OAB treatment.

MATERIALS AND METHODS

PubMed/MEDLINE was searched for the key words "OAB," "anticholinergics," "muscarinic receptor selectivity," "blood-brain barrier," "CNS," and "CVS side effects." Additional relevant literature was determined by examining the reference lists of articles identified through the search.

RESULTS

CNS and CVS side effects, pharmacodynamic and pharmacokinetic properties, the metabolism of these drugs, and the clinical implications for their use in OAB are presented and discussed in this review.

CONCLUSIONS

Trospium, 5-hydroxymethyl tolterodine, darifenacin, and solifenacin seem to have favorable pharmacodynamic and pharmacokinetic properties with regard to CNS side effects, whereas the pharmacodynamic features of darifenacin, solifenacin, and oxybutynin appear to have an advantage over the other anticholinergic agents (tolterodine, fesoterodine, propiverine, and trospium) with regard to CVS side effects. To determine the real-life situation, head-to-head studies focusing especially on CNS and CVS side effects of OAB anticholinergic agents are urgently needed.