Urinary tract infections in patients with spinal cord lesions: treatment and prevention

Patient-reported signs and symptoms of urinary tract infections after video-urodynamic studies in individuals with neurogenic lower urinary tract dysfunction-A single-center observational study

BACKGROUND

Video-urodynamic studies (VUDS) are the recommended standard of diagnostic care to objectively assess neurogenic lower urinary tract dysfunction (NLUTD) in individuals with spinal cord injury/disease (SCI/D). This examination requires the insertion of a catheter into the bladder, which increases the risk of a urinary tract infection (UTI). Data on symptomatic UTIs after VUDS are limited.

METHODS

A single-center, observational study was conducted to evaluate the incidence of patient-reported UTI signs and symptoms 7 days after VUDS. No peri-interventional antibiotics were administered. The effect of sex, age, SCI/D duration, bladder evacuation method, bacteriuria, UTI prophylaxis, UTI history, or unfavorable VUDS results on the occurrence of patient-reported UTI signs or symptoms after VUDS was examined using binary logistic regression analysis.

RESULTS

A total of 140 individuals with a mean age of 59.1 ± 14.0 years and a median SCI/D duration of 15.0 years (6/29 years) were evaluated. Seven days (mean 7 ± 1 days) after VUDS, 42 (30%) individuals reported at least one UTI sign or symptom. In the majority, signs and symptoms resolved without the need for antibiotic treatment, which was required in seven participants (5%). Male sex significantly (p = 0.04) increased the odds (odds ratio 3.74) of experiencing UTI signs and symptoms after VUDS.

CONCLUSIONS

In individuals with NLUTD, 30% experienced UTI signs and symptoms 1 week after VUDS. However, these signs and symptoms were transient and only 5% required antibiotic treatment. Thus, antibiotic prophylaxis does not seem necessary in all individuals with SCI/D undergoing VUDS.

Summary of the 2024 Update of the European Association of Urology Guidelines on Neurourology

BACKGROUND AND OBJECTIVE

Most patients with neurourological disorders require lifelong medical care. The European Association of Urology (EAU) regularly updates guidelines for diagnosis and treatment of these patients. The objective of this review is to provide a summary of the 2024 updated EAU guidelines on neurourology.

METHODS

A structured literature review covering the timeframe 2021-2023 was conducted for the guideline update. A level of evidence and a strength rating were assigned for each recommendation on the basis of the literature data.

KEY FINDINGS AND LIMITATIONS

Neurological conditions significantly affect urinary, sexual, and bowel function, and lifelong management is required for neurourological patients to maintain their quality of life and prevent urinary tract deterioration. Early diagnosis and effective treatment are key, and comprehensive clinical assessments, including urodynamics, are crucial. Management should be customised to individual needs and should involve a multidisciplinary approach and address sexuality and fertility. Lifelong monitoring and follow-up highlight the importance of continuous care for neurourological patients.

CONCLUSIONS AND CLINICAL IMPLICATIONS

The 2024 EAU guidelines on neurourology provide an up-to-date overview of available evidence on diagnosis, treatment, and follow-up for neurourological patients.

PATIENT SUMMARY

Neurological disorders very frequently affect the lower urinary tract and sexual and bowel function and patients need lifelong management. We summarise the updated European Association of Urology guidelines on neurourology to provide patients and caregivers with the latest insights for optimal health care support.

Comparing an Integrated Amphiphilic Surfactant to Traditional Hydrophilic Coatings for the Reduction of Catheter-Associated Urethral Microtrauma

Hydrophilic-coated intermittent catheters have improved the experience of intermittent urinary catheterization for patients compared to conventional gel-lubricated uncoated catheters. However, the incorporation of polyvinylpyrrolidone (PVP) within hydrophilic coatings can lead to significant issues with coating dry-out. Consequently, increased force on catheter withdrawal may cause complications, including urethral microtrauma and pain. Standard methods of evaluating catheter lubricity lack physiological relevance and an understanding of the surface interaction with the urethra. The tribological performance and urethral interaction of commercially available hydrophilic PVP-coated catheters and a coating-free integrated amphiphilic surfactant (IAS) catheter were evaluated by using a biomimetic urethral model designed from a modified coefficient of friction (CoF) assay. T24 human urothelial cells were cultured on customized silicone sheets as an alternate countersurface for CoF testing. Hydrophilic PVP-coated and coating-free IAS catheters were hydrated and the CoF obtained immediately following hydration, or after 2 min, mimicking in vivo indwell time for urine drainage. The model was observed for urethral epithelial cell damage postcatheterization. The majority of hydrophilic PVP-coated catheters caused significantly greater removal of cells from the monolayer after 2 min indwell time, compared to the IAS catheter. Hydrophilic PVP-coated catheters were shown to cause more cell damage than the coating-free IAS catheter. A biomimetic urethral model provides a more physiologically relevant model for understanding the factors that govern the frictional interface between a catheter surface and urethral tissue. From these findings, the use of coating-free IAS catheters instead of hydrophilic PVP-coated catheters may help reduce urethral microtrauma experienced during catheter withdrawal from the bladder, which may lead to a lower risk of infection.

Incidence and risk factors of urinary tract infection in hospitalized patients with spinal cord injury in a hospital of China

Urinary tract infection (UTI) caused by spinal cord injury (SCI) can have significant morbidity. There is currently a lack of relevant data in China. This study explores incidence and risk factors of UTI in hospitalized patients with SCI in China, and will help healthcare professionals to make informed clinical decisions to reduce the incidence of UTI. This retrospective study analyzed the medical records of patients with SCI who were hospitalized at three campuses of a hospital in central China between August 2014 and August 2023. The files of patients with SCI were reviewed for demographics and clinical characteristics. Logistic regression analysis was performed to identify risk factors associated with UTI. A total of 538 patients were included in this study. The incidence of UTI was 49.8%. Sex, hypoproteinemia, urinary incontinence, bladder irrigation, timing of rehabilitation, duration of indwelling urinary catheter were risk factors of UTI. The implementation of specific preventive measures is anticipated to result in a decrease in the occurrence of UTI among individuals with SCI, consequently enhancing their overall quality of life and prognosis.

Impacts of Bladder Managements and Urinary Complications on Quality of Life: Cross-sectional Perspectives of Persons With Spinal Cord Injury Living in Malaysia, Indonesia, and Thailand

BACKGROUND

The impact of bladder care and urinary complications on quality of life in persons with spinal cord injury who have neurogenic lower urinary tract dysfunction has not been elucidated, especially in those living in low-resource countries.

METHODS

This multinational cross-sectional survey was conducted in rehabilitation facilities in Malaysia, Indonesia, and Thailand. Community-dwelling adults with traumatic or nontraumatic spinal cord injury participating in the International Spinal Cord Injury Community Survey from 2017 to 2018 were enrolled. Data regarding bladder management/care, presence of bladder dysfunction, urinary tract infection, and quality of life score were extracted from the International Spinal Cord Injury Community Survey questionnaire. The impact of bladder care and urinary complications on quality of life was determined using univariable and multivariable regression analysis.

RESULTS

Questionnaires from 770 adults were recruited for analysis. After adjusting for all demographic and spinal cord injury-related data, secondary conditions, as well as activity and participation factors, urinary tract infection was an independent negative predictive factor of quality of life score ( P = 0.007, unstandardized coefficients = -4.563, multivariable linear regression analysis, enter method).

CONCLUSIONS

Among bladder care and urinary complication factors, urinary tract infection is the only factor negatively impacting quality of life. These results address the importance of proper bladder management and urinary tract infection prevention in persons with spinal cord injury to improve their quality of life.

An antioxidative sophora exosome-encapsulated hydrogel promotes spinal cord repair by regulating oxidative stress microenvironment

Spinal cord injury (SCI) is a severe traumatic disease because of its complications and multi-organ dysfunction. After the injury, the disruption of microenvironment homeostasis in the lesion demolishes the surrounding healthy tissues via various pathways. The microenvironment regulation is beneficial for neural and functional recovery. Sustained release, cellular uptake, and long-term retention of therapeutic molecules at the impaired sites are important for continuous microenvironment improvement. In our study, a local-implantation system was constructed for SCI treatment by encapsulating exosomes derived from Flos Sophorae Immaturus (so-exos) in a polydopamine-modified hydrogel (pDA-Gel). So-exos are used as nanoscale natural vehicles of rutin, a flavonoid phytochemical that is effective in microenvironment improvement and nerve regeneration. Our study showed that the pDA-Gel-encapsulated so-exos allowed rapid improvement of the impaired motor function and alleviation of urination dysfunction by modulating the spinal inflammatory and oxidative conditions, thus illustrating a potential SCI treatment through a combinational delivery of so-exos.

Bladder Management Strategies for Urological Complications in Patients with Chronic Spinal Cord Injury

Neurogenic lower urinary tract dysfunction, common in patients with chronic spinal cord injury, inevitably results in urological complications. To address neurogenic lower urinary tract dysfunction after spinal cord injury, proper and adequate bladder management is important in spinal cord injury rehabilitation, with the goal and priorities of the protection of upper urinary tract function, maintaining continence, preserving lower urinary tract function, improvement of SCI patients' quality of life, achieving compatibility with patients' lifestyles, and decreasing urological complications. This concise review aims to help urologists address neurogenic lower urinary tract dysfunction by focusing on the risks of long-term urological complications and the effects of different bladder management strategies on these complications based on scientifically supported knowledge.

Asian guidelines for UTIs & STIs UTI section: Complicated UTIs with neurogenic bladder

EPIDEMIOLOGY AND PATHOGENESIS

Urinary tract infection (UTI) in patients with neurogenic bladder causes significant morbidity and mortality.

DIAGNOSIS

UTI in neurogenic bladder causes atypical symptomatology. Urine tests are pivotal in confirming or excluding UTI, and in guiding appropriate antibiotic treatment.

TREATMENT

1. Symptomatic UTI warrants appropriate antibiotic treatment with reference to culture results and local antibiotic resistance patterns. Asymptomatic bacteriuria should not be treated, and antibiotic prophylaxis is generally not recommended.2. Adequate bladder drainage is essential in reducing the occurrence of urinary tract infections.3. Recurrent UTI in neurogenic bladder may necessitate the treatment of neurogenic detrusor overactivity and the restoration of low bladder pressure during bladder storage and voiding by drugs or surgery.

Significant bacteriuria among requested repeat urine samples and its clinical correlation

BACKGROUND AND OBJECTIVES

Urinary tract infections (UTI) are the most common bacterial infections in both outpatient and inpatient department received for routine bacterial culture and sensitivity. We looked for significant bacteriuria in requested repeat urine sample after primary urine culture yielded significant growth (>105 CFU/ml) of ≥3 types of colonies. Also studied, different isolates grown with their sensitivity pattern and contamination rates of urine samples from different departments.

MATERIALS AND METHODS

In routine, primary urine cultures yielding ≥3 types of colonies on Cystine Lactose Electrolyte Deficient (C.L.E.D) were requested for repeat samples, collected with aseptic precautions after proper instructions. Data was analyzed for the Microbiological profile and its clinical correlation.

RESULTS

Among 617 received requested urine samples, 292 (47.3%) yielded significant bacteriuria. Clinical details were available for 252 cases out of which 100 (39.7%) showed asymptomatic bacteriuria, 87 (34.5%) complicated UTI and 65 (25.7%) uncomplicated UTI. Null hypothesis was rejected as 292 (47.3%) of the received repeat samples showed significant bacteriuria and 325 (53%) showed normal flora/no growth i.e. there is a 50% chance of getting either a positive culture or normal flora/no growth in repeat urine samples after the primary urine culture showed ≥3 types of colonies. It indicates the importance of requesting repeat urine samples for an accurate urine culture report. Male patients were significantly associated with significant bacteriuria and complicated UTI (p= 0.001). Escherichia coli (n=112, 28%) was the most common followed by Klebsiella species (n=66, 16.4%) and Enterococcus species (n=69, 17.2%). 183 (45.6%) isolates were Multi-Drug Resistant (MDR) Gram Negative Bacilli (GNBs), Escherichia coli (50.3%) being most common. Vancomycin Resistant Enterococcus (VRE) (n=8, 2.0%) was also isolated.

CONCLUSION

Our study justifies the rationale for asking a repeat urine samples which helps in providing an appropriate microbiological report with antibiotic sensitivity pattern, hence preventing unwanted reporting of commensals/contaminants facilitating evidence based therapy.

Management of recurrent urinary tract infections in women

Urinary tract infections are highly prevalent and result in significant patient morbidity as well as large financial costs to healthcare systems. Recurrent urinary tract infections can be challenging for many healthcare professionals, and the repeated use of antibiotics in this patient cohort inevitably contributes to the growing issue of antimicrobial resistance and superbugs. It is essential that these patients are appropriately diagnosed and managed to ensure rapid resolution of symptoms and the prevention of chronic or recurrent urinary tract infections. There are several antibiotic-based options available for the prophylaxis of recurrent urinary tract infections however, in the current era of rising antimicrobial resistance, an awareness of antibiotic stewardship and the use of non-antibiotic alternatives for the treatment and prevention of urinary tract infections is of critical importance. We present a case-based multidisciplinary team discussion to highlight how women with recurrent urinary tract infections should be managed, encouraging the use of non-antibiotic prophylactic measures when suitable.

Level of evidence:

Level 5

How can we improve investigation, prevention and treatment for recurrent urinary tract infections - ICI-RS 2018

BACKGROUND

Recurrent urinary tract infection (rUTI) is a chronic condition and has a significant impact on health-related quality of life. The commonly used definition for rUTI is greater than three episodes in a year or more than two in 6 months. Current diagnostic methods have been used worldwide for over five decades, despite well evidenced criticism. Enhanced culture techniques demonstrate that the microbiome of the bladder is far more complex than previously thought and begs a reappraisal of our current testing. Treatment of rUTI is based on a small number of antibiotic trials with some evidence showing a reduction in the number of positive cultures, but one must be cautious in interpreting the results and weigh against the risk of generation of antimicrobial resistance (AMR).

AIM

The International Consultation on Incontinence-Research Society think tank reviewed the literature with a view to improving investigation, prevention and treatment of rUTI.

METHODS

A multidisciplinary team of experts were invited to present evidence regarding the current diagnostic methods, recent advances related to bladder biome mapping and current treatment strategies, including antibiotic and nonantibiotic options. Current guidelines regarding antibiotic stewardship and concerns regarding AMR were discussed.

DISCUSSION

Outcome of the think tank discussions are summarised with a set of recommendations to inform future research. Particular consideration is given to bacterial survival in the bladder after treatment as well as defects in urothelial barrier function which may play a significant part in the failure to eradicate UTI.

Current controversies in urinary tract infections: ICI-RS 2017

AIMS

The current definition of urinary tract infection (UTI) relies on laboratory and clinical findings, which may or may not be relevant, depending upon the patient group under consideration. This report considers the utility of current definitions for UTI in adults with and without underlying neurological conditions in order to identify gaps in current understanding and to recommend directions for research.

METHODS

This is a consensus report of the proceedings of Think Tank TT3: "How do we define and when do we treat UTI in neurological and non-neurological adult patients?" from the annual International Consultation on Incontinence-Research Society (ICI-RS), June 8-10, 2017 (Bristol, UK).

RESULTS

Evidence considering the definitions of UTI in patients with and without neurological diseases was reviewed and synthesized. We examined research on laboratory methods and clinical definitions, focusing on specific cut-off values for the quantification of significant bacteriuria, and leucocyturia. Several areas were identified, mostly related to the lack of evidence-based definitions of significant bacteriuria for different patient groups, as well as uncertainties about the role of inflammatory biomarkers, and non-specific symptoms and signs.

CONCLUSIONS

One of the biggest challenges in clinical practice is to discriminate between asymptomatic bacteriuria and symptomatic UTI. Future research should concentrate on risk factors for developing symptomatic UTI in different patient groups. Targeted investigations for specific populations, such as the frail elderly, and patients with neurogenic bladder dysfunction, are still needed.

Conception and development of Urinary Tract Infection indicators to advance the quality of spinal cord injury rehabilitation: SCI-High Project

Context: Urinary tract infections (UTI) are the most frequent secondary health condition following spinal cord injury or disease (SCI/D) that adversely impact overall health and quality of life, and often result in rehabilitation service interruptions, emergency department visits, and urinary sepsis. Methods: Experts in Urohealth and/or UTI recognition and management and the SCI-High Project Team used a combination of evidence synthesis and consensus methods for developing the UTI indicators. A systematic search and a Driver diagram analysis were applied to identify key factors influencing UTI. This Driver diagram guided the UTI Working Group when defining the construct, specifying the aim for the UTI SCI/D quality indicators, and developing the UTI diagnostic checklist and fever definition. Results: The structure indicator was the proportion of patients with a health care professional (i.e. family physician or urologist) able to follow-up with the patient regarding urine culture and sensitivity results within 48-72 h of collection. The Working Group knowingly adopted a single checklist for UTI diagnosis, recognizing the stark contrast in the complexity of diagnosis in acute versus community settings. The process indicator is the proportion of SCI/D rehabilitation inpatients with UTI as defined by the UTI diagnostic checklist. The outcome indicator is the proportion of SCI/D rehabilitation inpatients with inappropriate antibiotic prescription. Conclusion: UTI can be diagnosed using the developed symptoms and signs checklist. These structure, process, and outcome quality indicators will ultimately reduce inappropriate antibiotic therapy for UTI and the rising incidence of antibiotic resistance among community-dwelling individuals with chronic SCI/D.

Evaluation of functional outcomes in traumatic spinal cord injury with rehabilitation-acquired urinary tract infections: A retrospective study

OBJECTIVE

The objective of this study was to evaluate the impact of urinary tract infections (UTIs) acquired during acute inpatient traumatic Spinal Cord Injury (tSCI) rehabilitation on Functional Independence Measure (FIM) gains.

DESIGN

Retrospective chart review of consecutive patients with tSCI admitted to an acute rehabilitation facility from 2007-2012. The primary outcome was FIM scores and the association with UTI.

RESULTS

The sample included 110 patients and 70 acquired UTIs. No demographic differences were observed between groups with and without UTI. Those with UTIs had significantly lower FIM motor scores, on admission, discharge, and gain, as well as lower FIM efficiency and longer lengths of stay compared to those without a UTI. Recurrence of UTI was associated with increased length of stay, but did not impact FIM motor gains.

CONCLUSIONS

There was a statistically significant correlation between acquired UTIs and lower FIM motor scores on admission, gain, and discharge in tSCI rehabilitation. The correlation of UTI and decreased FIM gains are similar to other neurorehabilitation populations with UTI occurrence. UTIs are an important negative variable when measuring functional outcomes in rehabilitation. Further prospective studies should be performed to investigate this correlation.

Patient subjective assessment of urinary tract infection frequency and severity is associated with bladder management method in spinal cord injury

STUDY DESIGN

The Neurogenic Bladder Research Group (NBRG) registry is a multicenter prospective observational study. This manuscript is retrospective based on a cross-sectional survey.

OBJECTIVES

To assess patient subjective assessment of urinary tract infection (UTI) frequency and severity are associated with the degree of use of catheters or incontinence products.

SETTING

Multiple hospitals across the United States.

METHODS

Eligibility included: age > 18 years and acquired SCI. Over 1.5 years, 1479 eligible participants were enrolled. We excluded those with surgical reconstruction or diversion of the bladder. In total, 1282 participants were grouped by bladder management: (1) indwelling catheter (IDC), (2) clean intermittent catheterization (CIC), (3) external devices (pads/condom), and (4) volitional voiding (Void). UTI frequency was classified as 0, 1-3, 4-6, or > 6 over the prior year. UTI severity was determined by hospitalization for UTI in the prior year. Multivariate regression compared these factors across groups.

RESULTS

UTIs were least frequent in Void followed by pads/condom, CIC, and IDC (all p ≤ 0.001). UTI severity followed a similar pattern. Controlling for covariates, the adjusted odds of UTI frequency (Void = reference) were 2.28 (1.38-3.76) for pads/condom, 3.42 (2.25-5.18) for CIC, and 4.3 (2.59-6.70) for IDC (all p ≤ 0.001).

CONCLUSIONS

Patient subjective assessment of UTI frequency is highest with IDC, followed by CIC, pads/condom, and lowest with spontaneous voiding. The odds of hospitalization for UTI were three times higher for IDC than spontaneous voiding. UTI risk should be considered when counseling patients about bladder management options. These associations do not imply causation but warrant further investigation in a prospective manner.

SPONSORSHIP

Patient-Centered Outcomes Research Institute (PCORI) Award (CER14092138).

Community-Acquired Urinary Tract Infection by Escherichia coli in the Era of Antibiotic Resistance

Urinary tract infections (UTIs) caused by Escherichia coli (E. coli) are the most common types of infections in women. The antibiotic resistance of E. coli is increasing rapidly, causing physicians to hesitate when selecting oral antibiotics. In this review, our objective is to ensure that clinicians understand the current seriousness of antibiotic-resistant E. coli, the mechanisms by which resistance is selected for, and methods that can be used to prevent antibiotic resistance.

Preliminary validation of a Urinary Symptom Questionnaire for individuals with Neuropathic Bladder using Intermittent Catheterization (USQNB-IC): A patient-centered patient reported outcome

BACKGROUND

We developed a Urinary Symptom Questionnaire for individuals with neurogenic bladder due to spinal cord injury (SCI) and spina bifida (SB) who manage their bladders with intermittent catheterization, the USQNB-IC. This project followed an approach to patient-centered patient reported outcomes development that we created and published in 2017, specifically to ensure the primacy of the patient's perspective and experience.

PARTICIPANTS

Two sets of responses were collected from individuals with neurogenic bladder due to either SCI (n = 336) and SB (patients, n = 179; and caregivers of patients with NB, n = 66), and three sets of "controls", individuals with neurogenic bladder who do not have a history of UTIs (n = 49) individuals with chronic mobility impairments (neither SCI nor SB) and without neurogenic bladder (n = 46), and those with no mobility impairment, no neurogenic bladder, and no history of UTIs (n = 64).

METHOD

Data were collected from all respondents to estimate these psychometric or measurement domains characterizing a health related PRO: Reliability (minimization of measurement error; internal consistency or interrelatedness of the items; and maximization of variability that is due to "true" difference between levels of the symptoms across patients), and validity (content, reflection of the construct to be measured; face, recognizability of the contents as representing the construct to be measured; structural, the extent to which the instrument captures recognizable dimensions of the construct to be measured; and criterion, association with a gold standard).

RESULTS

Evidence from these five groups of respondents suggest the instrument has face, content, criterion, convergent, and divergent validity, as well as reliability. The items were all more descriptive of our patient (focus) groups and were only weakly endorsed by the control groups.

CONCLUSIONS

The instrument is unique in its emphasis on, and origination from, the lived experiences of patients with neurogenic bladder who use intermittent catheterization; this preliminary psychometric evidence suggests the instrument could be useful for research and in the clinic. These results justify further development of the instrument, including formal exploration of the scoring and estimation of responsivity of these items to clinical interventions as well as patient-directed self care.

Recommendations for urological follow-up of patients with neurogenic bladder secondary to spinal cord injury

PURPOSE

To review currently available guidelines and recommendations regarding urological follow-up of patients after spinal cord injury (SCI) and present an evidence-based summary to support clinicians in their clinical practice.

METHODS

Maximum data were collected according to different methods, including searches with multiple and specific keywords, reference checks, gray literature searches (congress reports, working papers, statement documents), and browsing-related Web site access. Obtained data were analyzed with the modified version of the Oxford grading system for recommendations using levels of evidence (LE) and grades of recommendation (GR).

RESULTS

Different surveillance strategies exist, but there is no consensus among authors and organizations. As a result, practice patterns vary around the world. The present review indicates that proper urological follow-up of SCI patients should consist of medical history (LE 1-4, GR B-C), clinical examination (LE 4, GR C), renal laboratory tests (LE 1-3, GR B), imaging surveillance of the upper urinary tract (LE 1-3, GR A-B), urodynamic study (LE 2-4, GR B-C), and cystoscopy/cytology (LE 1-4, GR D). Clinicians agree that SCI patients should be followed up regularly with an individually tailored approach. A 1-year follow-up schedule seems reasonable in SCI patients without additional risk factors of renal deterioration (LE 3-4, GR C). In those who manifest risk factors, report changes in bladder behavior, or present with already developed complications of neurogenic bladder dysfunction, follow-up plans should be modified with more frequent checkups (LE 4, GR C). Urodynamic study should be repeated and considered as a routine monitoring strategy.

CONCLUSION

Individuals with neurogenic lower urinary tract dysfunction are at increased risk of multiple complications. Nevertheless, proper follow-up after SCI improves the prognosis for these patients and their quality of life.

Bakterielle Harnwegsinfektionen bei Katzen

Ziel: Ermittlung der Prävalenz prädisponierender Begleiterkrankungen (BE) bei Katzen mit bakteriellen Harnwegsinfektionen (HWI) und der Prävalenz von Bakterienspezies bei verschiedenen BE sowie deren Sensibilität gegenüber den bei HWI häufig eingesetzten Antibiotika Doxycyclin, Trimethoprim-Sulfamethoxazol (TMS), Amoxicillin-Clavulansäure (AMC), Cephalothin und Enrofloxacin. Material und Methoden: In die retrospektive Studie wurden Katzen mit positiver Urinkultur im Zeitraum 2003–2009 eingeschlossen. Basierend auf den Daten der Krankenakten erfolgte eine Einteilung in vier Gruppen: Katzen mit systemischen prädisponierenden BE, Katzen mit lokalen prädisponierenden BE, Katzen mit Harnblasendauerkathetern (HBDK) und Katzen ohne dokumentierte BE. Zur Ermittlung der wahrscheinlichen Effektivität der Antibiotika wurden deren antimikrobielle Impact-Faktoren berechnet. Ergebnisse: In die Studie gingen 194 Katzen mit 219 bakteriellen Isolaten ein. Davon wiesen 78,4% (152/194) eine BE auf. 49,5% (96/194) hatten eine systemische BE und 28,9% (56/194) hatten eine lokale BE oder einen HBDK. Katzen mit systemischen BE waren signifikant älter als Katzen der anderen Gruppen und häufiger weiblich als Katzen mit lokaler BE und HBDK. Mehr als 50% der Katzen mit systemischer BE zeigten keine klinischen Symptome einer Erkrankung des unteren Harntrakts. Escherichia (E.) coli, gefolgt von Streptococcus spp., Staphylococcus spp. und Enterococcus spp. waren die am häufigsten vorkommenden Isolate. Dabei lag der Anteil der E.-coli-Isolate bei Katzen mit systemischer BE signifikant höher, während bei Katzen mit HBDK und Katzen mit anderen lokalen BE der Anteil an Streptococcus- und Staphylococcus-spp.-Isolaten signifikant höher war. Bei Katzen mit lokaler BE und Katzen mit HBDK ergaben sich niedrigere antimikrobielle Impact-Faktoren als bei Katzen der anderen Gruppen. Schlussfolgerung und klinische Relevanz: Ein Großteil der Katzen mit HWI leidet unter einer prädisponierenden BE. Katzen mit systemischer BE zeigen häufig keine Symptome einer Erkrankung des unteren Harntrakts. AMC und TMS waren in dieser Katzenpopulation die Antibiotika mit den höchsten antimikrobiellen Impact-Faktoren.

Summary of the UAA-AAUS guidelines for urinary tract infections

Urinary tract infections, genital tract infections and sexually transmitted infections are the most prevalent infectious diseases, and the establishment of locally optimized guidelines is critical to provide appropriate treatment. The Urological Association of Asia has planned to develop the Asian guidelines for all urological fields, and the present urinary tract infections, genital tract infections and sexually transmitted infections guideline was the second project of the Urological Association of Asia guideline development, which was carried out by the Asian Association of Urinary Tract Infection and Sexually Transmitted Infection. The members have meticulously reviewed relevant references, retrieved via the PubMed and MEDLINE databases, published between 2009 through 2015. The information identified through the literature review of other resources was supplemented by the author. Levels of evidence and grades of recommendation for each management were made according to the relevant strategy. If the judgment was made on the basis of insufficient or inadequate evidence, the grade of recommendation was determined on the basis of committee discussions and resultant consensus statements. Here, we present a short English version of the original guideline, and overview its key clinical issues.

Management of urinary tract infections in patients with neurogenic bladder: challenges and solutions

INTRODUCTION

Urinary tract infections (UTIs) are one of the most common morbidities in persons with neurogenic lower urinary tract dysfunction (NLUTD). They are associated with a significant morbidity and mortality, and they affect the quality of life of the affected patients. Diagnosis and treatment of UTI in this group of patients are challenging. In this review, the current strategies regarding diagnosis, treatment, and prevention are summarized.

DIAGNOSTICS

it is important to correctly diagnose a UTI, as treatment of bacteriuria should strictly be avoided. A UTI is defined as a combination of laboratory findings (leukocyturia and bacteriuria) and symptoms. Laboratory findings without symptoms are classified as asymptomatic bacteriuria. Routine urine screening is not advised.

TREATMENT

Only UTI should be treated; treatment of asymptomatic bacteriuria is not indicated. Prior to treatment, urine for a urine culture should be obtained. Antibiotic treatment for ~7 days is advised.

PREVENTION

In recurrent UTI, bladder management should be optimized and morphologic causes for UTI should be excluded. If UTIs persist, medical prophylaxis should be considered. Currently, no prophylactic measure with evidence-based efficacy exists. Long-term antibiotic prophylaxis should be used merely as an ultimate measure. Among the various mentioned innovative approaches for UTI prevention, bacteriophages, intravesical instillations, complementary and alternative medicine techniques, and probiotics seem to be most promising.

CONCLUSION

Recently, several promising innovative options for UTI prophylaxis have been developed which may help overcome the current therapeutic dilemma. However, further well designed studies are necessary to evaluate the safety and efficacy of these approaches.

The reliability and validity of using the urine dipstick test by patient self-assessment for urinary tract infection screening in spinal cord injury patients

Aims:

The aim of this is to evaluate the reliability of the urine dipstick test by patients’ self-assessment for urinary tract infection (UTI) screening and to determine the validity of urine dipstick test.

Settings:

Rehabilitation Department, Srinagarind Hospital, Thailand.

Study Design:

A diagnostic study.

Subjects and Methods:

This study compared the urine dipstick test (index test) with the National Institute on Disability and Rehabilitation Research (NIDRR) criteria (gold standard test) in spinal cord injury (SCI) patients. The urine dipstick test informed positive and negative results. Besides the NIDRR criteria classified as UTI and no UTI. The interrater reliability was measured in the sense of Kappa whereas the validity of urine dipstick test was reported in terms of sensitivity, specificity, positive likelihood ratio (LR) (+LR), negative LR (−LR), positive predictive value (PPV), and negative predictive value (NPV).

Results:

Out of the 56 participants, the kappa of urine dipstick test for leukocyte esterase, nitrite, and combined leukocyte esterase and nitrite were 0.09, 0.21, and 0.52, respectively. The nitrite urine dipstick test showed the highest sensitivity (90%). The combined leukocyte esterase and nitrite urine dipstick test gave the highest specificity (87%), PPV (60%), NPV (93%), and +LR (5.63).

Conclusions:

The interrater reliability of combined leukocyte esterase and nitrite urine dipstick test was moderate agreement. The combined leukocyte esterase and nitrite urine dipstick test showed high level of both sensitivity and specificity. The combined leukocyte esterase and nitrite urine dipstick test should be promoted for patients’ self-assessment for UTI screening in SCI patients.

Itermittent catheterization in the rehabilitation setting: a comparison of clean and sterile technique

Objective: To compare the onset of symptomatic urinary tract infection in individuals with spinal cord injury in a rehabilitation setting who are randomized to clean or sterile intermittent catheterization technique.

Design: Randomized controlled design.

Setting: Spinal cord rehabilitation units in western Canada.

Subjects: Thirty-six patients with cervical spinal cord injuries requiring intermittent catheterization by nursing staff were recruited. None had a previous history of voiding dysfunction or urinary tract infections.

Interventions: Subjects were randomized to either clean or sterile intermittent catheterization technique. Protocols for both clean and sterile techniques were standardized and followed by nursing staff and caregivers.

Main measures: Primary outcome measure was symptomatic urinary tract infection as diagnosed by urine culture ≥ 105 colony-forming units/mL, pyuria (≥ 10 leukocytes on high-power field), and accompanying symptoms.

Results: A total of 189 urine specimens from 36 subjects were cultured. Of the 36 subjects, 15 (43%) developed a symptomatic urinary tract infection: 6/16 (37%) from the clean group; 9/20 (45%) from the sterile group (P>0.05). Mean time to onset for symptomatic urinary tract infection for the clean group was 3.0 (standard deviation (SD) 2.4) weeks and for the sterile group, 3.6 (SD 1.3) weeks (P>0.05). The most common urinary organisms at onset of symptomatic urinary tract infection were Enterococcus species followed by Klebsiella.

Conclusion: Clean intermittent catheterization in the rehabilitation setting does not appear to place the patient with spinal cord injury at increased risk for developing symptomatic urinary tract infection, and has significant cost and time saving benefits for the health care system, as well as enhancing the transition for the patient from rehabilitation to community.

Effectiveness of Preanalytic Practices on Contamination and Diagnostic Accuracy of Urine Cultures: a Laboratory Medicine Best Practices Systematic Review and Meta-analysis

BACKGROUND

Urinary tract infection (UTI) in the United States is the most common bacterial infection, and urine cultures often make up the largest portion of workload for a hospital-based microbiology laboratory. Appropriately managing the factors affecting the preanalytic phase of urine culture contributes significantly to the generation of meaningful culture results that ultimately affect patient diagnosis and management. Urine culture contamination can be reduced with proper techniques for urine collection, preservation, storage, and transport, the major factors affecting the preanalytic phase of urine culture.

OBJECTIVES

The purposes of this review were to identify and evaluate preanalytic practices associated with urine specimens and to assess their impact on the accuracy of urine culture microbiology. Specific practices included collection methods for men, women, and children; preservation of urine samples in boric acid solutions; and the effect of refrigeration on stored urine. Practice efficacy and effectiveness were measured by two parameters: reduction of urine culture contamination and increased accuracy of patient diagnosis. The CDC Laboratory Medicine Best Practices (LMBP) initiative's systematic review method for assessment of quality improvement (QI) practices was employed. Results were then translated into evidence-based practice guidelines.

SEARCH STRATEGY

A search of three electronic bibliographic databases (PubMed, SCOPUS, and CINAHL), as well as hand searching of bibliographies from relevant information sources, for English-language articles published between 1965 and 2014 was conducted.

SELECTION CRITERIA

The search contained the following medical subject headings and key text words: urinary tract infections, UTI, urine/analysis, urine/microbiology, urinalysis, specimen handling, preservation, biological, preservation, boric acid, boric acid/borate, refrigeration, storage, time factors, transportation, transport time, time delay, time factor, timing, urine specimen collection, catheters, indwelling, urinary reservoirs, continent, urinary catheterization, intermittent urethral catheterization, clean voided, midstream, Foley, suprapubic, bacteriological techniques, and microbiological techniques.

MAIN RESULTS

Both boric acid and refrigeration adequately preserved urine specimens prior to their processing for up to 24 h. Urine held at room temperature for more than 4 h showed overgrowth of both clinically significant and contaminating microorganisms. The overall strength of this body of evidence, however, was rated as low. For urine specimens collected from women, there was no difference in rates of contamination for midstream urine specimens collected with or without cleansing. The overall strength of this evidence was rated as high. The levels of diagnostic accuracy of midstream urine collection with or without cleansing were similar, although the overall strength of this evidence was rated as low. For urine specimens collected from men, there was a reduction in contamination in favor of midstream clean-catch over first-void specimen collection. The strength of this evidence was rated as high. Only one study compared midstream collection with cleansing to midstream collection without cleansing. Results showed no difference in contamination between the two methods of collection. However, imprecision was due largely to the small event size. The diagnostic accuracy of midstream urine collection from men compared to straight catheterization or suprapubic aspiration was high. However, the overall strength of this body of evidence was rated as low. For urine specimens collected from children and infants, the evidence comparing contamination rates for midstream urine collection with cleansing, midstream collection without cleansing, sterile urine bag collection, and diaper collection pointed to larger reductions in the odds of contamination in favor of midstream collection with cleansing over the other methods of collection. This body of evidence was rated as high. The accuracy of diagnosis of urinary tract infection from midstream clean-catch urine specimens, sterile urine bag specimens, or diaper specimens compared to straight catheterization or suprapubic aspiration was varied.

AUTHORS' CONCLUSIONS

No recommendation for or against is made for delayed processing of urine stored at room temperature, refrigerated, or preserved in boric acid. This does not preclude the use of refrigeration or chemical preservatives in clinical practice. It does indicate, however, that more systematic studies evaluating the utility of these measures are needed. If noninvasive collection is being considered for women, midstream collection with cleansing is recommended, but no recommendation for or against is made for midstream collection without cleansing. If noninvasive collection is being considered for men, midstream collection with cleansing is recommended and collection of first-void urine is not recommended. No recommendation for or against is made for collection of midstream urine without cleansing. If noninvasive collection is being considered for children, midstream collection with cleansing is recommended and collection in sterile urine bags, from diapers, or midstream without cleansing is not recommended. Whether midstream collection with cleansing can be routinely used in place of catheterization or suprapubic aspiration is unclear. The data suggest that midstream collection with cleansing is accurate for the diagnosis of urinary tract infections in infants and children and has higher average accuracy than sterile urine bag collection (data for diaper collection were lacking); however, the overall strength of evidence was low, as multivariate modeling could not be performed, and thus no recommendation for or against can be made.

Risk factors for symptomatic urinary tract infections in individuals with chronic neurogenic lower urinary tract dysfunction

STUDY DESIGN

Retrospective investigation.

OBJECTIVES

To investigate the association of patient and injury characteristics, as well as bladder management, with the occurrence of patient-reported, symptomatic urinary tract infection(s) UTI(s) in patients with chronic neurogenic lower urinary tract dysfunction (NLUTD).

SETTING

Tertiary urologic referral center.

METHODS

The patient database was screened for patients with chronic (>12 months) NLUTD who had presented between 2008 and 2012. Patient characteristics, bladder evacuation management, the annual number of patient-reported, symptomatic UTIs and the type of prophylactic treatment to prevent UTIs were collected. Binary logistic regression analysis was used to investigate the effects of the investigated risk factors on the occurrence of symptomatic UTI(s) and recurrent symptomatic UTIs (⩾3 annual UTIs).

RESULTS

The data of 1104 patients with a mean NLTUD duration of 20.3±11.6 years were investigated. The evacuation method was a significant (P⩽0.004) predictor for the occurrence of symptomatic UTI and recurrent symptomatic UTIs. The greatest annual number of symptomatic UTIs was observed in patients using transurethral indwelling catheters, and the odds of experiencing a UTI and recurrent UTIs were increased more than 10- and 4-fold, respectively. The odds of a UTI or recurrent UTIs were also increased significantly (P⩽0.014) in patients using intermittent catheterization (IC). Botulinum toxin injections into the detrusor increased the odds of a UTI ~10-fold (P=0.03).

CONCLUSIONS

The bladder evacuation method is the main predictor for symptomatic UTIs in individuals with NLUTD. Transurethral catheters showed the highest odds of symptomatic UTI and should be avoided whenever possible.

Medical complications during pregnancy and childbirth in women with SCI in Switzerland

STUDY DESIGN

A retrospective interview study of mothers with spinal cord injuries (SCIs) who gave birth over the last 15 years.

OBJECTIVES

To identify the medical complications of women with SCIs during pregnancy and childbirth in Switzerland and to describe how they dealt with these complications.

SETTINGS

Swiss Paraplegic Research in Nottwil, the University of Lausanne and participants' homes.

METHODS

Data were collected by self-reported questionnaires and descriptive analysis was conducted.

RESULTS

Seventeen women with SCIs who gave birth to 23 children were included. Thirteen of the women were paraplegics and four were tetraplegics. All of them practiced an independent bladder management. Three women changed their bladder management techniques during pregnancy. Five women reported an increased bladder evacuation frequency during pregnancy, and six women reported a new onset or increase in incontinence. We observed no significant increase in bowel dysfunction or skin breakdown due to their pregnancies. Ten women were hospitalised during the course of their pregnancies. Aside from urinary tract infections/pyelonephritis, women were hospitalised for falls, hypertension, pneumonia, preeclampsia, pre-term labour or tachycardia.

CONCLUSION

The results of our study clearly demonstrated that, although medical complications are not infrequent during pregnancy in women with SCIs, pregnancy and delivery in this group of women are possible without posing intolerable risks to the mothers or the children. Urological problems seemed to be the most frequent complication during pregnancy.

Summary of European Association of Urology (EAU) Guidelines on Neuro-Urology

CONTEXT

Most patients with neuro-urological disorders require life-long medical care. The European Association of Urology (EAU) regularly updates guidelines for the diagnosis and treatment of these patients.

OBJECTIVE

To provide a summary of the 2015 updated EAU Guidelines on Neuro-Urology.

EVIDENCE ACQUISITION

Structured literature searches in several databases were carried out to update the 2014 guidelines. Levels of evidence and grades of recommendation were assigned where possible.

EVIDENCE SYNTHESIS

Neurological disorders often cause urinary tract, sexual, and bowel dysfunction. Most neuro-urological patients need life-long care for optimal life expectancy and quality of life. Timely diagnosis and treatment are essential to prevent upper and lower urinary tract deterioration. Clinical assessment should be comprehensive and usually includes a urodynamic investigation. The neuro-urological management must be tailored to the needs of the individual patient and may require a multidisciplinary approach. Sexuality and fertility issues should not be ignored. Numerous conservative and noninvasive possibilities of management are available and should be considered before a surgical approach is chosen. Neuro-urological patients require life-long follow-up and particular attention has to be paid to this aspect of management.

CONCLUSIONS

The current EAU Guidelines on Neuro-Urology provide an up-to-date overview of the available evidence for adequate diagnosis, treatment, and follow-up of neuro-urological patients.

PATIENT SUMMARY

Patients with a neurological disorder often suffer from urinary tract, sexual, and bowel dysfunction and life-long care is usually necessary. The update of the EAU Guidelines on Neuro-Urology, summarized in this paper, enables caregivers to provide optimal support to neuro-urological patients. Conservative, noninvasive, or minimally invasive approaches are often possible.

UTIs in patients with neurogenic bladder

Urinary tract infections (UTI) remain one of the most prevalent and frustrating morbidities for neurogenic bladder patients, and death attributed to urosepsis in the spinal cord injury (SCI) patient is higher when compared to the general population. Risk factors include urinary stasis, high bladder pressures, bladder stones, and catheter use. While classic symptoms of UTI include dysuria, increased frequency and urgency, neurogenic bladder patients present differently with increased spasticity, autonomic dysreflexia, urinary incontinence, and vague pains. Multiple modalities have been assessed for prevention including catheter type, oral supplements, bladder irrigation, detrusor injections and prophylactic antimicrobials. Of these, bladder inoculation with E. coli HU2117, irrigation with iAluRil(®), detrusor injections, and weekly prophylaxis with alternating antibiotics appear to have a positive reduction in UTI but require further study. Ultimately, treatment for symptomatic UTI should account for the varied flora and possible antibiotic resistances including relying on urine cultures to guide antibiotic therapy.

[Antibioprophylaxy and urological management of women with spinal cord injury during pregnancy]

OBJECTIVE

More and more women with spinal cord injury (SCI) can have a pregnancy. Few data have been published on these pregnancies and their urological impact. We report a series of these cases illustrating the urological experience of specialized centers.

METHODS

This is a retrospective study that identified pregnancies in women with SCI followed-up between 2000 and 2014. Data covering all urological and obstetric events during pregnancies, before and after implementation of weekly oral cyclic antibiotics (WOCA) program, were collected from medical records.

RESULTS

Fifteen women with SCI who gave birth to 20 children were included. Three of them were quadriplegics and 12 were paraplegics. All of them performed themselves intermittent catheterization: 11 by urethral way and 4 by high way because carrying a continent cystostomy. Mean follow-up period before pregnancy was 14.6 years [3-27 years IC 95%] and the mean follow-up for the study was 8.5 months [6.5-9 IC 95%]. We observed a reduction of symptomatic urinary tract infections after WOCA onset (13/13 before vs. 0/7 after, P=0.001), a reduction of recurrent urinary infections (6/13 vs. 0/7, P=0.03), a reduction of threats to premature births (8/13 vs. 0/7, P=0.001). Multi-resistant bacteria appeared to increase (0/13 vs. 3/7, P=0.01). We also observed a trend to significant reduction of premature births number (4/13 vs. 0/13, P=0.1) and that of low birth weight (3/13 versus 0/7, P=0.1). The overall neonatal survival rate was 100%.

CONCLUSION

Our study before/after introduction of a weekly oral cycle antibiotic prophylaxis during pregnancy for women with spinal cord injury showed a significant reduction in symptomatic urinary tract infections and a tendency to improve pregnancy outcomes.

LEVEL OF EVIDENCE

4.

Feline urinary tract pathogens: prevalence of bacterial species and antimicrobial resistance over a 10-year period

The purpose of this retrospective study was to identify bacterial species in cats with bacterial urinary tract infections (UTIs) and to investigate their antimicrobial susceptibilities over a 10-year period. Three hundred and thirty cultures from 280 cats were included in the study. The mean age of affected cats was 9.9 years; female cats with bacterial UTIs were significantly older than male cats with UTIs. The most common pathogen identified was Escherichia coli (42.3 per cent), followed by Streptococcus species (19.3 per cent), Staphylococcus species (15.6 per cent), Enterococcus species (6.6 per cent) and Micrococcaceae (5.8 per cent). Forty specimens (12.1 per cent) yielded growth of more than one isolate. Streptococcus and Enterococcus isolates were resistant to a significantly higher number of antimicrobial agents than E coli and Staphylococcus species isolates. Applying the formula to select rational antimicrobial therapy, bacterial isolates were most likely to be susceptible to nitrofurantoin, amoxicillin clavulanic acid, enrofloxacin and gentamicin. The antimicrobial impact factor for nitrofurantoin increased significantly over the 10-year period, whereas there was no significant change in antimicrobial impact factors for doxycycline, trimethoprim-sulfamethoxazole, gentamicin, enrofloxacin, cephalothin and amoxicillin clavulanic acid. The detected changes in in vitro antimicrobial efficacy could help to develop hospital-specific guidelines for antimicrobial use to prevent the further development of resistance in feline uropathogens.

The prevalence, etiologic agents and risk factors for urinary tract infection among spinal cord injury patients

BACKGROUND

Urinary tract infections (UTIs) are important causes of morbidity and mortality in patients with spinal cord injury and 22% of patients with acute spinal cord injury develop UTI during the first 50 days.

OBJECTIVES

The aim of this study was to determine the prevalence, etiologic agents and risk factors for asymptomatic bacteriuria and symptomatic urinary tract infections in patients with spinal cord injury.

PATIENTS AND METHODS

This was a prospective investigation of spinal cord injury patients with asymptomatic bacteriuria and symptomatic urinary tract infections in Baskent University Medical Faculty Ayas Rehabilitation Center and Ankara Physical Therapy and Rehabilitation Center between January 2008 and December 2010. The demographic status, clinical and laboratory findings of 93 patients with spinal cord injury were analyzed in order to determine the risk factors for asymptomatic or symptomatic bacteriuria.

RESULTS

Sixty three (67.7%) of 93 patients had asymptomatic bacteriuria and 21 (22.6%) had symptomatic urinary tract infection. Assessment of the frequency of urinary bladder emptying methods revealed that 57 (61.3%) of 93 patients employed permanent catheters and 24 (25.8%) employed clean intermittent catheterization. One hundred and thirty-five (48.0%) of 281 strains isolated form asymptomatic bacteriuria attacks and 16 (66.6%) of 24 strains isolated from symptomatic urinary tract infection attacks, totaling 151 strains, had multidrug resistance (P > 0.05). One hundred (70.4%) of 142 Escherichia coli strains and 19 (34.5%) of 55 Klebsiella spp strains proliferated in patients with asymptomatic bacteriuria; 8 (80%) of 10 E. coli strains and 4 (80%) of 5 Klebsiella spp. strains were multidrug resistant.

CONCLUSIONS

The most common infectious episode among spinal cord injury patients was found to be urinary tract ınfection. E. coli was the most common microorganism isolated from urine samples. Antibiotic use in the previous 2 weeks or 3 months, hospitalization during the last one-year and previous diagnosis of urinary tract ınfection were the risk factors identified for the development of infections with multi-drug resistant isolates. Urinary catheterization was found to be the only independent risk factor contributing to symptomatic urinary tract infection.

Analysis of the distribution of bacteria within urinary catheter biofilms using four different molecular techniques

BACKGROUND

Most nosocomial urinary tract infections are associated with the long-term use of urinary catheters. Such urinary catheter-associated infections are caused by bacteria that reside in biofilms. We determined the distribution of fastidious/nonculturable bacteria in biofilm of urinary catheters and evaluated the availability of concurrent applying various molecular techniques.

METHODS

The biofilms were isolated from urinary catheters that had been installed in patients for 3 or 4 weeks and examined by the following 4 different 16S ribosomal RNA (rRNA) analysis techniques: capillary electrophoresis, terminal restriction fragment length polymorphism (T-RFLP), denaturing gradient gel electrophoresis (DGGE), and pyrosequencing.

RESULTS

A total of 329 isolates was identified by capillary electrophoresis. The most common genera were Edwardsiella, Enterobacter, Escherichia, and Pseudomonas. A total of 32 bacterial strains was identified by T-RFLP. Escherichia, Pseudomonas, Enterobacter, Moraxella, Proteus, Serratia, and Yersinia were the most represented genera. Similarly, Escherichia, Pseudomonas, and Enterobacter were the most prevalent according to DGGE. Burkholderia, Corynebacterium, Achromobacter, Alcaligenes, Citrobacter, Stenotrophomonas, and Streptococcus were also detected. Escherichia and Pseudomonas were abundantly detected by pyrosequencing. Enterobacter, Bacteroides, Klebsiella, Corynebacterium were also seen.

CONCLUSION

These 4 techniques detected different kinds of bacteria, suggesting that the simultaneous application of multiple techniques is necessary to accurately detect fastidious/nonculturable bacteria. Because bacterial growth within urinary catheter biofilms may be associated with urinary tract infections, further comprehensive studies are required.

Clinical features and risk factors for development of urinary tract infections in cats

The clinical and diagnostic features of 155 cats with urinary tract infection (UTI) and 186 controls with negative urine culture/s were characterized retrospectively (signalment, clinical signs, urinalysis, urine culture, concurrent diseases, lower urinary tract diagnostic/therapeutic procedures). Multivariable logistic regression was used to identify risk factors associated with UTI. Cats of all ages were affected by UTI with no sex/breed predisposition. Lower urinary tract signs were absent in 35.5% of cats with UTI. Pyuria and bacteriuria had sensitivities of 52.9% and 72.9%, and specificities of 85.5% and 67.7% for detection of UTI, respectively. Risk factors significantly associated with increased odds of UTI were urinary incontinence [odds ratio (OR)=10.78, P=0.0331], transurethral procedures (OR=8.37, P<0.0001), urogenital surgery (OR=6.03, P=0.0385), gastrointestinal disease (OR=2.62, P=0.0331), decreased body weight (OR=0.81, P=0.0259) and decreased urine specific gravity (OR=0.78, P=0.0055). Whilst not independently significant, renal disease and lower urinary tract anatomic abnormalities improved statistical model performance and contributed to UTI.

Intermittent catheterization with a hydrophilic-coated catheter delays urinary tract infections in acute spinal cord injury: a prospective, randomized, multicenter trial

OBJECTIVE

To investigate whether intermittent catheterization (IC) with a hydrophilic-coated catheter delays the onset of the first symptomatic urinary tract infection (UTI) and reduces the number of symptomatic UTIs in patients with acute spinal cord injury (SCI) compared with IC with standard, uncoated catheters.

DESIGN

A prospective, randomized, parallel-group trial.

SETTING

Fifteen North American SCI centers. Participants were followed up while in the hospital or rehabilitation unit (institutional period) and up to 3 months after institutional discharge (community period). The maximal study period was 6 months.

PARTICIPANTS

A total of 224 subjects with traumatic SCI of less than 3 months' duration who use IC.

METHODS

The participants were randomized within 10 days of starting IC to either single-use hydrophilic-coated (SpeediCath) or polyvinyl chloride uncoated (Conveen) catheters.

MAIN OUTCOME MEASUREMENTS

The time from the first catheterization to the first antibiotic-treated symptomatic UTI was measured as well as the total number of symptomatic UTIs during the study period.

RESULTS

The time to the first antibiotic-treated symptomatic UTI was significantly delayed in the hydrophilic-coated catheter group compared with the uncoated catheter group. The delay corresponded to a 33% decrease in the daily risk of developing the first symptomatic UTI among participants who used the hydrophilic-coated catheter. In the institutional period, the incidence of antibiotic-treated symptomatic UTIs was reduced by 21% (P < .05) in the hydrophilic-coated catheter group.

CONCLUSIONS

The use of a hydrophilic-coated catheter for IC is associated with a delay in the onset of the first antibiotic-treated symptomatic UTI and with a reduction in the incidence of symptomatic UTI in patients with acute SCI during the acute inpatient rehabilitation. Using a hydrophilic-coated catheter could minimize UTI-related complications, treatment costs, and rehabilitation delays in this group of patients, and reduce the emergence of antibiotic-resistant organisms.

Bladder management methods and urological complications in spinal cord injury patients

BACKGROUND

The optimal bladder management method should preserve renal function and minimize the risk of urinary tract complications. The present study is conducted to assess the overall incidence of urinary tract infections (UTI) and other urological complications in spinal cord injury patients (SCI), and to compare the incidence of these complications with different bladder management subgroups.

MATERIALS AND METHODS

545 patients (386 males and 159 females) of traumatic spinal cord injury with the mean age of 35.4±16.2 years (range, 18 - 73 years) were included in the study. The data regarding demography, bladder type, method of bladder management, and urological complications, were recorded. Bladder management methods included indwelling catheterization in 224 cases, clean intermittent catheterization (CIC) in 180 cases, condom drainage in 45 cases, suprapubic cystostomy in 24 cases, reflex voiding in 32 cases, and normal voiding in 40 cases. We assessed the incidence of UTI and bacteriuria as the number of episodes per hundred person-days, and other urological complications as percentages.

RESULTS

The overall incidence of bacteriuria was 1.70 / hundred person-days. The overall incidenceof urinary tract infection was 0.64 / hundered person-days. The incidence of UTI per 100 person-days was 2.68 for indwelling catheterization, 0.34 for CIC, 0.34 for condom drainage, 0.56 for suprapubic cystostomy, 0.34 for reflex voiding, and 0.32 for normal voiding. Other urological complications recorded were urethral stricture (n=66, 12.1%), urethritis (n=78, 14.3%), periurethral abscess (n=45, 8.2%), epididymorchitis (n=44, 8.07%), urethral false passage (n=22, 4.03%), urethral fistula (n=11, 2%), lithiasis (n=23, 4.2%), hematuria (n=44, 8.07%), stress incontinence (n=60, 11%), and pyelonephritis (n=6, 1.1%). Clean intermittent catheterization was associated with lower incidence of urological complications, in comparison to indwelling catheterization.

CONCLUSIONS

Urinary tract complications largely appeared to be confined to the lower urinary tract. The incidence of UTI and other urological complications is lower in patients on CIC in comparison to the patients on indwelling catheterizations. Encouraging CIC; early recognition and treatment of the UTI and urological complications; and a regular follow up is necessary to reduce the medical morbidity.

Treatment of urinary tract infection in persons with spinal cord injury: guidelines, evidence, and clinical practice. A questionnaire-based survey and review of the literature

OBJECTIVES

To investigate current clinical practice in the treatment of urinary tract infections (UTIs) in persons with spinal cord injury (SCI) in SCI centers where German is spoken and to compare it with current guidelines and evidence-based standards evaluated by a literature review.

METHODS

A standardized questionnaire was mailed to 16 SCI rehabilitation centers. The results were compared with a literature review

RESULTS

Of the 16 centers, 13 responded. Indications for UTI treatment, medications, and treatment duration differed substantially among the individual centers and from the existing guidelines. Antibiotic treatment is regarded as the method of choice. Compared with the existing literature, patients in two center were undertreated, whereas they were overtreated in seven centers.

CONCLUSION

Even in specialized centers, treatment of UTI in patients with SCI is based more on personal experience of the treating physicians than on published evidence. This may at least partly be due to the paucity of evidence-based data. The observed tendency toward overtreatment with antibiotics carries substantial future risks, as this strategy may well lead to the induction of multiresistant bacterial strains. Therefore, developing guidelines would be an important step toward a unification of the different treatment strategies, thus reducing unnecessary antibiotic treatment. Furthermore, evidence-based studies evaluating the success of antibiotic treatment as well as the usefulness of alternative strategies are urgently needed.

Bladder management methods and urological complications in spinal cord injury patients

BACKGROUND

The optimal bladder management method should preserve renal function and minimize the risk of urinary tract complications. The present study is conducted to assess the overall incidence of urinary tract infections (UTI) and other urological complications in spinal cord injury patients (SCI), and to compare the incidence of these complications with different bladder management subgroups.

MATERIALS AND METHODS

545 patients (386 males and 159 females) of traumatic spinal cord injury with the mean age of 35.4±16.2 years (range, 18 - 73 years) were included in the study. The data regarding demography, bladder type, method of bladder management, and urological complications, were recorded. Bladder management methods included indwelling catheterization in 224 cases, clean intermittent catheterization (CIC) in 180 cases, condom drainage in 45 cases, suprapubic cystostomy in 24 cases, reflex voiding in 32 cases, and normal voiding in 40 cases. We assessed the incidence of UTI and bacteriuria as the number of episodes per hundred person-days, and other urological complications as percentages.

RESULTS

The overall incidence of bacteriuria was 1.70 / hundred person-days. The overall incidenceof urinary tract infection was 0.64 / hundered person-days. The incidence of UTI per 100 person-days was 2.68 for indwelling catheterization, 0.34 for CIC, 0.34 for condom drainage, 0.56 for suprapubic cystostomy, 0.34 for reflex voiding, and 0.32 for normal voiding. Other urological complications recorded were urethral stricture (n=66, 12.1%), urethritis (n=78, 14.3%), periurethral abscess (n=45, 8.2%), epididymorchitis (n=44, 8.07%), urethral false passage (n=22, 4.03%), urethral fistula (n=11, 2%), lithiasis (n=23, 4.2%), hematuria (n=44, 8.07%), stress incontinence (n=60, 11%), and pyelonephritis (n=6, 1.1%). Clean intermittent catheterization was associated with lower incidence of urological complications, in comparison to indwelling catheterization.

CONCLUSIONS

Urinary tract complications largely appeared to be confined to the lower urinary tract. The incidence of UTI and other urological complications is lower in patients on CIC in comparison to the patients on indwelling catheterizations. Encouraging CIC; early recognition and treatment of the UTI and urological complications; and a regular follow up is necessary to reduce the medical morbidity.

Urinary tract infections

Catheter-associated urinary tract infections (CAUTIs) account for approximately 40% of all health care-associated infections. Despite studies showing benefit of interventions for prevention of CAUTI, adoption of these practices has not occurred in many healthcare facilities in the United States. As urinary catheters account for the majority of healthcare-associated UTIs, the most important interventions are directed at avoiding placement of urinary catheters and promoting early removal when appropriate. Alternatives to indwelling catheters such as intermittent catheterization and condom catheters should be considered. If indwelling catheterization is appropriate, proper aseptic practices for catheter insertion and maintenance and use of a closed catheter collection system are essential for preventing CAUTI. The use of antimicrobial catheters also may be considered when the rates of CAUTI remain persistently high despite adherence to other evidence-based practices, or in patients deemed to be at high risk for CAUTI or its complications. Attention toward prevention of CAUTI will likely increase as Center for Medicare and Medicaid Services and other third-party payers no longer reimburse for hospital-acquired UTI.