Urinary Catheter Research Articles

The catheterized bladder environment induces dysregulation of macrophage polarization exacerbating bacterial UTI.

Urinary catheterization causes bladder damage, predisposing hosts to catheter-associated urinary tract infections (CAUTIs). CAUTI pathogenesis is mediated by bladder damage-induced inflammation, resulting in accumulation and deposition of the blood-clotting protein fibrinogen (Fg) and its matrix form fibrin, which are exploited by uropathogens as biofilm platforms to establish infection. Catheter-induced inflammation also results in robust immune cell recruitment, including macrophages (Mϕs). A fundamental knowledge gap is understanding the mechanisms by which the catheterized-bladder environment suppresses the Mϕ antimicrobial response, allowing uropathogen persistence. Here, we found that Fg and fibrin differentially modulate M1 and M2 Mϕ polarization, respectively. We unveiled that fibrin accumulation in catheterized mice induced an anti-inflammatory M2-like Mϕ phenotype, correlating with pathogen persistence. Even GM-CSF treatment of wildtype mice to promote M1 polarization was not sufficient to reduce bacterial burden and dissemination, indicating that the catheterized-bladder environment provides mixed signals, dysregulating Mϕ polarization, hindering its antimicrobial response against uropathogens.

Urinary Retention Evaluation and Catheterization Algorithm for Adult Inpatients

Acute urinary retention (UR) is common, yet variations in diagnosis and management can lead to inappropriate catheterization and harm. To develop an algorithm for screening and management of UR among adult inpatients. In this mixed-methods study using the RAND/UCLA Appropriateness Method and qualitative interviews, an 11-member multidisciplinary expert panel of nurses and physicians from across the US used a formal multi-round process from March to May 2015 to rate 107 clinical scenarios involving diagnosis and management of adult UR in postoperative and medical inpatients. The panel ratings informed the first algorithm draft. Semistructured interviews were conducted from October 2020 to May 2021 with 33 frontline clinicians-nurses and surgeons from 5 Michigan hospitals-to gather feedback and inform algorithm refinements. Panelists categorized scenarios assessing when to use bladder scanners, catheterization at various scanned bladder volumes, and choice of catheterization modalities as appropriate, inappropriate, or uncertain. Next, qualitative methods were used to understand the perceived need, usability, and potential algorithm uses. The 11-member expert panel (10 men and 1 woman) used the RAND/UCLA Appropriateness Method to develop a UR algorithm including the following: (1) bladder scanners were preferred over catheterization for UR diagnosis in symptomatic patients or starting as soon as 3 hours since last void if asymptomatic, (2) bladder scanner volumes appropriate to prompt catheterization were 300 mL or greater in symptomatic patients and 500 mL or greater in asymptomatic patients, and (3) intermittent was preferred to indwelling catheterization for managing lower bladder volumes. Interview findings were organized into 3 domains (perceived need, feedback on algorithm, and implementation suggestions). The 33 frontline clinicians (9 men and 24 women) who reviewed the algorithm reported that an evidence-based protocol (1) was needed and could be helpful to clinicians, (2) should be simple and graphically appealing to improve rapid clinician review, and (3) should be integrated within the electronic medical record and prominently displayed in hospital units to increase awareness. The draft algorithm was iteratively refined based on stakeholder feedback. In this study using a systematic, multidisciplinary, evidence- and expert opinion-based approach, a UR evaluation and catheterization algorithm was developed to improve patient safety by increasing appropriate use of bladder scanners and catheterization. This algorithm addresses the need for practical guidance to manage UR among adult inpatients.

Relationship between Frequency of Urinary Catheter Care and Incidence of Urinary Tract Infection (UTI) in KH Ahmad Dahlan Room, RSU Muhammadiyah Ponorogo

Urinary tract infection (UTI) is a frequent occurrence in hospitals and it was reported that 37% of inpatients at RSU Muhammadiyah Ponorogo were fitted with urinary catheters and 38% of them experienced UTI. Frequency of urinary catheter care could potentially affect the incidence of UTI. This study aims to determine the relationship between the frequency of urinary catheter care and the incidence of urinary tract infection (UTI) in the KH Ahmad Dahlan Room of RSU Muhammadiyah Ponorogo. This research method is quantitative with a correlational design using a Cross Sectional approach. The study population was all inpatients in the KH Ahmad Dahlan Room at RSU Muhammadiyah Ponorogo in September - October 2023 totaling 484 patients with an average of 242 people / month. The sampling technique used purposive sampling with the research sample being a portion of inpatients with catheters installed, totaling 30 respondents. Data collection using Check List. Data analysis techniques using Chi-Square. The results of this study showed that of the 30 respondents, most of the 28 respondents (93.33%) with the frequency of urinary catheter care were irregular (not every day) and most of the 29 respondents (96.67%) experienced the incidence of urinary tract infections (UTI). The results of the Chi-Square statistical test obtained a p-value obtained of 0.095> 0.05 so as not to reject H0 which means there is no significant relationship between the frequency of urinary catheter care and the incidence of urinary tract infection (UTI).

Using fosfomycin to prevent infection following ureterorenoscopy in response to shortage of cephalosporins: a retrospective preliminary study

BackgroundIn 2019, the shortage of cefazolin led to the demand for cefotiam and cefmetazole exceeding the supply. The Department of Nephro-urology at Nagoya City University Hospital used fosfomycin as a substitute for perioperative prophylaxis. This retrospective preliminary study evaluated the efficacy of fosfomycin and cefotiam for preventing infections following ureterorenoscopy.MethodsThe study included 182 patients who underwent ureterorenoscopy between January 2018 and March 2021). Perioperative antibacterial treatment with fosfomycin (n = 108) or cefotiam (n = 74) was administered. We performed propensity score matching in both groups for age, sex, preoperative urinary catheter use, and preoperative antibiotic treatment.ResultsThe fosfomycin and cefotiam groups (n = 69 per group) exhibited no significant differences in terms of patients’ median age, operative duration, preoperative urine white blood cell count, preoperative urine bacterial count, and the rate of preoperative antibiotic treatment. In the fosfomycin and cefotiam groups, the median duration of postoperative hospital stay was 3 and 4 days, respectively; the median maximum postoperative temperature was 37.3 °C and 37.2 °C, respectively. The fosfomycin group had lower postoperative C-reactive protein levels and white blood cell count than the cefotiam group. However, the frequency of fever > 38 °C requiring additional antibiotic administration was similar.ConclusionsDuring cefotiam shortage, fosfomycin administration enabled surgeons to continue performing ureterorenoscopies without increasing the complication rate.

Urinalysis is predictive for absence of urinary tract infection in men with and without catheters.

To determine accuracy of negative urinalysis (UA) for predicting negative urine culture and the absence of urinary tract infection (UTI), and optimal urine culture growth cutoff for UTI diagnosis in men with and without urinary catheters. UAs with urine cultures within 1 week from adult men were identified and evaluated. Predictive values for the absence of UTI (absence of ≥1 of the following criteria: documentation of UTI diagnosis, antibiotic prescription, uropathogen presence on culture) were calculated. In total, 22 883 UAs were included. Negative UA had a high predictive value for negative urine culture (0.95, 95% confidence interval [CI]: 0.94-0.95) andabsence of UTI (0.99, CI: 0.99-0.995) in the overall cohort. Negative UA also had a high predictive value for negative urine culture (0.93, CI: 0.90-0.95) andabsence of UTI (0.99, CI: 0.98-0.999) in those with indwelling urinary catheters. The traditional threshold of culture growth of 100 000 colony-forming units (CFU)/mL did not capture 22% of UTIs. UA exhibits high predictive value for negative urine culture and absence of UTI in men, supporting a protocol wherein culture is only performed in the context of abnormal UA. The traditional 100 000 CFU/mL cut-off may have not captured a subset of UTI in the male population, and warrants further investigation.

Incidence of and Risk Factors for Post-Operative Urinary Retention Following Surgery for Perineal Tears Among Ugandan Women: A Prospective Cohort Study

Introduction and HypothesisWe aimed to determine the incidence and risk factors for post-operative urinary retention (POUR) following surgery for perineal tears, and to determine the time to normal voiding after POUR.MethodsThis was a prospective cohort study of women who underwent surgery for old (≥ 3 months) obstetric perineal tears from January 2022 to December 2023. The diagnosis of POUR was made in a woman who completely failed to void despite a full bladder or, one who had post-void residual (PVR) > 150 ml within 10 min of voiding. Return to normal voiding was considered if a patient with POUR had two consecutive PVRs of ≤ 150 ml. Descriptive analyses and multivariable logistic regression were performed to determine risk factors for POUR.ResultsA total of 153 participants were enrolled in this study with a mean age of 35.9 (SD ± 10.8) years. The incidence of POUR was 19.6% (30/153, 95% CI 14.02–26.7), and the median time to normal voiding for these patients was 42.4 h (range 24–72). Risk factors for POUR included repeat perineal tear surgery (RR = 4.24; 95% CI 1.16–15.52; p = 0.029) and early urinary catheter removal (RR = 2.89; 95% CI 1.09–7.67; p = 0.033).ConclusionPost-operative urinary retention following surgery for perineal tears is common. The time to return to normal voiding in patients with POUR is short. Women having repeat perineal tear surgery and those in whom the urinary catheter is removed early were more likely to experience POUR. Delayed urinary catheter removal could be considered, especially in patients undergoing repeat perineal tear surgery.

Subtotal traumatic penile amputation of unknown origin in a canine

AbstractCases with a fracture of the os penis in dogs have been reported rarely, and to the authors’ knowledge, traumatic penile amputation has only been reported once. The dog presented in this case report sustained subtotal traumatic penile amputation of unknown origin. Before the presentation, the dog had been in a boarding facility, where no trauma was witnessed. The patient presented with haematuria, discharge from the prepuce, and lethargy. Upon examination, traumatic subtotal penile amputation was diagnosed, and a complete blood count revealed severe regenerative anaemia. Surgical debridement was performed, and the wound healed by second intention. During the recovery period, a urinary catheter was placed to aid in preventing urethral stenosis. Though the animal sustained extensive trauma to its genitals and subsequent anaemia, it survived with a good quality of life and acceptable urinary function.

Implementation of an external female urinary catheter strategy on prevention of skin breakdown in acute care: A quality improvement study.

To evaluate the incidence of skin-related complications attributable to incontinence-associated dermatitis (IAD) using an external female urinary catheter device strategy for urinary incontinent (UI) patients in acute care. Multicenter quality improvement study. Randomized allocation of two commercially available external female urinary catheter devices was used in hospitalized UI female patients. Daily nursing skin assessments were documented in the electronic health record before, during and after external catheter device application. Methods and results were reported following SQUIRE guidelines. Three hundred and eighty-one patients from 57 inpatient care units were included in the analysis. Both catheter devices were associated with an overall low risk (5 %) of new or worsening skin breakdown. The overall benefit of external catheters is most persuasive for skin integrity, rather than infection prevention. Significant negative outcomes are associated with UI patients. External female urinary catheters are a non-invasive alternative strategy to reduce exposure of regional skin to urine contamination and IAD-related skin complications. Use of external female urinary catheters in hospitalized UI female patients offers low risk (5%) of new or worsening overall skin breakdown. Hospitalized UI female patients were screened for external catheter device eligibility by the bedside nurse. The quality improvement review committee waved consent because the intervention was considered standard care.

A Modified Lateral Seminal Vesicle Approach Preserving the Bladder Neck in Laparoscopic Radical Prostatectomy Improves Urinary Continence Recovery.

The purpose of this study was to investigate the effect of laparoscopic lateral seminal vesicle approach to preserve the bladder neck during laparoscopic radical prostatectomy. Between September 2020 and December 2022, we retrospectively analyzed patients with T1-T3b stage prostate cancer treated at our institution using the laparoscopic lateral seminal vesicle approach. We recorded the bladder neck preservation success rate, cystourethral anastomosis time, urinary catheter extraction time, length of hospital stay, and urinary control scores, including urine pad use, at 1 week, 1 month, and 3 months post-catheter removal. Adverse events included rectal injury, bladder injury, ureteral injury and positive surgical margins. There were 56 patients (mean age 70 ± 5.8 years) The success rate of bladder neck preservation was 100%. The median cystourethral anastomosis time was 11 (9-14) minutes. The median postoperative hospital stay was 10 (9-11) days. The urinary continence rate was 83.9% (47/56) in 1 week, 89.3% (50/56) in 1 month and 98.2% (55/56) in 3 months. One patient developed adhesions caused by invasion of both seminal vesicles, which damaged the rectal wall. The laparoscopic lateral seminal vesicle approach can preserve the bladder neck completely during laparoscopic radical prostatectomy, improving postoperative urinary continence, with a high rate of immediate urinary continence, and significantly improving patients' quality of life.

Urine microbiota in non-muscle-invasive bladder cancer and approaches to its detection

Introduction. There is evidence of a connection between infectious and inflammatory lesions of the lower urinary tract and bladder cancer (BCa). However, there is virtually no data on the urine microbiota of middle-aged and elderly men with suspected BCa. This knowledge is extremely important from the point of view of studying the role of the infectious-inflammatory hypothesis in the genesis of BCa.Objective. To conduct a comparative assessment of the microbiota of bladder urine obtained during natural urination and bladder catheterization through standard and extended cultural studies in men with a presumptive diagnosis of non-muscle-invasive bladder cancer (NMIBC).Materials & methods. The prospective comparative study with consecutive patient recruitment included 23 men older than 45 years with suspected NMIBC based on clinical, laboratory and sonographic data, as well as with no history of infectious and inflammatory diseases of the kidneys and urinary tract, including sexually transmitted infections and recurrent infections of other organs and systems. A midstream urine samples and catheter-drained urine immediately before urethrocystoscopy were subjected to bacteriological analysis. Urine culture study was carried out using a standard set of nutrient media under aerobic cultivation conditions and an expanded set of nutrient media under aerobic and anaerobic cultivation conditions.Results. An anaerobic spectrum of microorganisms was predominantly detected in the urine of patients with suspected NMIBC. Moreover, Peptococcus spp. was more often found among anaerobic taxa. (70%), Eubacterium spp., Propionibacterium spp. (45% each, respectively), among representatives of the aerobes — Corynebacterium spp. (60%), S. lentus (up to 45%), S. haemolyticus (35%) and E. faecalis (30%). Data from a comparative analysis of the detection frequencies of microorganisms depending on the method of collecting material and the set of media for cultivation showed that more isolates are isolated in the midstream urine samples than in the study of catheter urine (2.9- and 1.9-fold with the standard and extended sets of media, respectively). In addition, when performing an extended bacteriological study compared to the standard method, the detection of microorganisms is 3.5-fold higher when examining an average portion of urine and 5.1-fold higher when examining catheter urine. The average number of microorganisms per one patient is also higher when using the extended method (midstream portion — 4.7 ± 1.9; catheterised urine — 2.3 ± 1.0) in comparison with the standard one (midstream portion — 1.3 ± 0.9; catheterised urine — 0.3 ± 0.5).Conclusion. Middle-aged and older men with NMIBC are characterized by asymptomatic bacteriuria in the form of a wide range of aerobic and anaerobic microorganisms. The urine pattern obtained with a urethral catheter contains a significantly narrower range of bacteria compared to the sample obtained through natural urination. It is advisable to carry out an extended cultural urine examination to study the characteristics of the microbiota / microbiome of the urine of the bladder immediately before the urethrocystoscopy procedure by collecting urine with a urethral catheter.

Systemic Candida abscess after hypofractionated radiotherapy with temozolomide for glioblastoma in an older patient: illustrative case.

Hypofractionated radiotherapy with temozolomide is recommended for older patients with glioblastoma. Nevertheless, a potential complication of treatment is opportunistic infections with immunosuppression. An 86-year-old man presented with hemiparesis, prompting an investigation that revealed a right frontotemporal glioblastoma, isocitrate dehydrogenase wildtype. After the diagnostic biopsy, hypofractionated radiotherapy with temozolomide was administered. Lymphocytopenia was observed before the start of chemoradiotherapy and gradually worsened until 2 months later, possibly as a side effect of the treatment. One month after the completion of the initial treatment, the patient developed septic shock, leading to death within 2 days. Postmortem examination with autopsy revealed evidence of an invasive Candida infection possibly originating from the urinary catheter. Immunodeficiency, which is a side effect of radiation therapy with temozolomide, can cause rare and potentially fatal invasive Candida infections, especially in older and frail patients with newly diagnosed glioblastoma, even with short-term hypofractionated chemoradiotherapy. https://thejns.org/doi/10.3171/CASE24175.

Determination of voiding pressure in infants with normal lower urinary tracts: Exploring the possible effect of sacral development.

To investigate the association between sacral underdevelopment, as defined by subnormal sacral ratio (SR) measurements, with increased maximum detrusor voiding pressure (P det. Max) in infants. In this 2007-2015 retrospective cohort study, the medical records of all infants who underwent a pyeloplasty due to congenital ureteropelvic junction obstruction were added. Their P det. Max was evaluated through the suprapubic catheter utilized for urinary drainage intraoperatively, without imposing any additional risk of urethral catheterization on the infant. SR was calculated via the plain kidney, ureter, and bladder (KUB) radiography film obtained during the voiding cystourethrogram (VCUG) evaluation before the surgery. Participants were categorized into SR < 0.74 or SR ≥ 0.74. P det. Max was subsequently compared between these two groups. A total of 45 patients were included in our analysis. Twenty-eight (62.2%) patients had a (SR < 0.74), while 17 (37.8%) had a (SR ≥ 0.74). P det. Max was shown to be significantly higher in the SR < 0.74 compared to the SR ≥ 0.74 group (167.5 ± 60.8 vs. 55.7 ± 17.9 cmH2O, p < 0.001). After adjusting for age and sex, SR remained a significant contributor to P det. Max (p < 0.001). Physiologic detrusor sphincter dyscoordination (PDSD) rate was significantly higher in the SR < 0.74 versus SR ≥ 0.74 group (100.0% vs. 70.6%, respectively; p = 0.005). Lumbosacral underdevelopment, as indicated by subnormal sacral ratios, is associated with sphincter-detrusor dyscoordination, which causes PDSD and can ultimately result in higher P det. Max in infants.

Comparison of thulium and holmium lasers with conventional transurethral bladder resection for non-muscle invasive bladder cancer

Introduction. The gold standard of treatment for intermediate- and high-risk non-muscle-invasive bladder cancer (NMIBC) is transurethral resection of the bladder (TURB) in combination with intravesical therapy. However, this procedure may cause serious complications. At the same time, studies of various lasers for the treatment of NMIBC have demonstrated their safety and efficacy. Despite this, the topic has not yet been fully explored and is not widely practiced in clinical oncology, making further research necessary.Objective. To compare thulium and holmium lasers with conventional TURB for management of non-muscle-invasive bladder cancer (NMIBC).Materials &amp; methods. In our study, depending on the treatment approach, 84 NMIBC-patients were divided into three groups. Group 1 included 27 patients (34.14%), who underwent laser thulium bladder resection; group 2 included 25 patients (29.76%), who underwent laser holmium bladder resection, and group 3 included 32 patients (38.1%), who underwent standard TURB. Prior to surgery, all patients received a standard set of preoperative general clinical and instrumental examinations for bladder cancer, and the choice of surgical approach was based on informed patient consent, taking into account the benefits and risks of the three treatment options. All surgeries were performed in accordance with established protocols.Results. In the TURB group, the surgery time was the longest and totalled in 20.5 ± 7.4 min. Laser technologies reduce the surgery time to 16.3 ± 5.3 min for a holmium laser and to 14.7 ± 5.2 min for a thulium laser. Also, in groups 1 and 2, a shorter duration of postoperative bladder irrigation was noted (4.4 ± 1.8 and 4.7 ± 1.6 hours) and shorter periods of postoperative bladder catheterisation (1.5 ± 0.08 and 1.6 ± 0.08 days) compared to group 3, where these indicators were 16.4 ± 2.5 hours and 2.5 ± 0.13 days, respectively. Among patients undergoing either holmium or thulium surgery, a higher rate of disease-free survival has been noted. Independent prognostic factors that influence the prognosis of NMIBC in all groups include the type of surgery, history of bladder tumors, and pathological stage.Conclusion. The use of laser technology, such as thulium and holmium laser, in bladder wall resection for NMIBC shows promising results and provides a good clinical outcome that is comparable to (and in some cases, superior to) standard TURB.

Urethral caruncle causes acute urinary retention

IntroductionWe encountered a case of urinary retention caused by a urethral caruncle.Case presentationAn 86‐year‐old woman presented to our hospital with urinary retention. When the urinary bladder catheter was placed, a smooth, well‐defined mass 20 mm in diameter was detected on the posterior wall of the external urethral meatus. The patient was diagnosed with urinary retention due to a urethral caruncle, and the mass was resected. The mass was pathologically compatible with a urethral caruncle. The patient could urinate postoperatively. Ultrasound test after surgery showed residual urine volume was 100 mL.ConclusionInspecting the urethral meatus is vital in the clinical examination of older women with voiding symptoms. A urethral caruncle is a rare cause of urinary retention. However, large urethral caruncles are at risk of causing urinary retention suggesting that resecting the urethral caruncles at an appropriate time is desirable.

Long-term results of multimodal treatment of the prostate using the Thulium Laser.

To evaluate a novel multimodal treatment (TLP) that integrates the use of a thulium laser, bipolar transurethral resection of the prostate (TURP), and "button-type" bipolar plasma vaporization for the endoscopic treatment of benign prostatic hyperplasia (BPH). From March 2018 to December 2021, we prospectively evaluated 220 patients with symptomatic BPH who underwent TLP. Patients were assessed based on the International Prostate Symptom Score (IPSS), quality of life (QoL), maximum urinary flow rate (Qmax), and postvoid residual urine (PVR). Perioperative and postoperative follow-up data were analyzed. The mean age at surgery was 66.74 years (SD 8.21). The median prostate size was 80 (IQR 70 - 110). The median operative time was 45 (IQR 35 - 55) minutes and the hospital stay was 2 (IQR 1 - 2) days. Patients were discharged with the urinary catheter in place, which was removed approximately 7 days after surgery when the histopathological result was discussed with the patient. Postoperatively, IPSS, QoL, Qmax and PVR showed a significant improvement starting at 3 months and continued through the postoperative follow-up visits (6-12-24-36-48-60 months). Urethral stricture and bladder neck contracture occurred in 1 (0.45%) and 2 (0.91%) patients, respectively. Recurrence of BPH occurred in 2 patients (0.91%) who underwent a second procedure. In conclusion, we report that the multimodal surgical treatment of BPH consisting of combining Thulium laser vaporization, bipolar TURP and plasma vaporization (TLP) represents an efficient and durable therapeutic method for BPH patients with low a complication rate at 5-year follow-up.

The predictors of fungal infections after liver transplantation and the influence of fungal infections on outcomes

The primary objective of this study was to assess the incidence, timing, risk factors of fungal infections (FIs) within 3 months after liver transplantation (LT). The secondary objective was to evaluate the impact of FIs on outcomes. Four hundred and ten patients undergoing LT from January 2015 until January 2023 in a tertiary university hospital were included in the present retrospective cohort study to investigate the risk factors of FIs and to assess the impacts of FIs on the prognosis of LT recipients using logistic regression. The incidence of FIs was 12.4% (51/410), and median time from LT to the onset of FIs was 3 days. By univariate analysis, advanced recipient age, prolonged hospital stay prior to LT, high Model for End Stage Liver Disease (MELD) score, use of broad-spectrum antibiotics, and elevated white blood cell (WBC) count, increased operating time, massive blood loss and red blood cell transfusion, elevated alanine aminotransferase on day 1 and creatinine on day 3 after LT, prolonged duration of urethral catheter, prophylactic antifungal therapy, the need for mechanical ventilation and renal replacement therapy were identified as factors of increased post-LT FIs risk. Multivariate logistic regression analysis identified that recipient age ≥ 55 years[OR = 2.669, 95%CI: 1.292–5.513, P = 0.008], MELD score at LT ≥ 22[OR = 2.747, 95%CI: 1.274–5.922, P = 0.010], pre-LT WBC count ≥ 10 × 109/L[OR = 2.522, 95%CI: 1.117–5.692, P = 0.026], intraoperative blood loss ≥ 3000 ml [OR = 2.691, 95%CI: 1.262–5.738, P = 0.010], post-LT duration of urethral catheter > 4 d [OR = 3.202, 95%CI: 1.553–6.602, P = 0.002], and post-LT renal replacement therapy [OR = 5.768, 95%CI: 1.822–18.263, P = 0.003] were independently associated with the development of post-LT FIs. Post-LT prophylactic antifungal therapy ≥ 3 days was associated with a lower risk of the development of FIs [OR = 0.157, 95%CI: 0.073–0.340, P < 0.001]. As for clinical outcomes, FIs had a negative impact on intensive care unit (ICU) length of stay ≥ 7 days than those without FIs [OR = 3.027, 95% CI: 1.558–5.878, P = 0.001] but had no impact on hospital length of stay and 1-month all-cause mortality after LT. FIs are frequent complications after LT and the interval between the onset of FIs and LT was short. Risk factors for post-LT FIs included high MELD score at LT, advanced recipient age, pre-LT WBC count, massive intraoperative blood loss, prolonged post-LT duration of urethral catheter, and the need for post-LT renal replacement therapy. However, post-LT prophylactic antifungal therapy was independently associated with the reduction in the risk of FIs. FIs had a significant negative impact on ICU length of stay.

732 Does Intraoperative Urinary Catheterisation Decrease Postoperative Urinary Retention After Laparoscopic Inguinal Hernia Repair? a Systematic Review and Meta-Analysis

Abstract Aim To evaluate comparative outcomes of laparoscopic inguinal hernia repair with and without use of intraoperative urinary catheterisation. Method A systematic search of MEDLINE, CENTRAL and Web of Science and bibliographic reference lists were conducted. All comparative studies evaluating outcomes of laparoscopic inguinal hernia repair with and without use of intraoperative urinary catheterisation were included and their risk of bias were assessed using their risk of bias were assessed using ROBINS-I tool. Postoperative urinary retention was analysed as the primary outcome parameter and an odds ratio (OR) was determined using Random-effects modelling. Results We included 6 comparative studies reporting a total of 8,675 patients who underwent laparoscopic inguinal hernia repair with (n=3,318) and without (n=5,357) use of intraoperative urinary catheterisation. There was no significant difference in postoperative urinary retention between the two groups (4.3% versus 3.7%, OR 0.93; 95% CI 0.55-1.58, p=0.80). There was significant heterogeneity among the included studies (I2: 75%, p=0.001). Results of sensitivity analyses were consistent with the results of the main analysis. Conclusions Meta-analysis of best available evidence (level 2a) demonstrated that use of intraoperative urinary catheter has no advantage in prevention of postoperative urinary retention following laparoscopic inguinal hernia repair. Future randomised controlled trials are required to control for confounding factors that increases the risk of urinary retention.

Adult acute leukemia patients with gram-negative bacteria bloodstream infection: Risk factors and outcomes of antibiotic-resistant bacteria.

This study aims to analyze the risk factors for the development of multidrug-resistant (MDR) and carbapenem-resistant (CR) bacteria bloodstream infection (BSI) in a patient with acute leukemia (AL) and the mortality in gram-negative bacteria (GNB) BSI. This is a retrospective study conducted at West China Hospital of Sichuan University, which included patients diagnosed with AL and concomitant GNB BSI from 2016 to 2021. A total of 206 patients with GNB BSI in AL were included. The 30-day mortality rate for all patients was 26.2%, with rates of 25.8% for those with MDR GNB BSI and 59.1% for those with CR GNB BSI. Univariate and multivariate analyses revealed that exposure to quinolones (Odds ratio (OR) = 3.111, 95% confidence interval (95%CI): 1.623-5.964, p = 0.001) within the preceding 30 days was an independent risk factor for MDR GNB BSI, while placement of urinary catheter (OR = 6.311, 95%CI: 2.478-16.073, p< 0.001) and exposure to cephalosporins (OR = 2.340, 95%CI: 1.090-5.025, p = 0.029) and carbapenems (OR = 2.558, 95%CI: 1.190-5.497, p = 0.016) within the preceding 30 days were independently associated with CR GNB BSI. Additionally, CR GNB BSI (OR = 2.960, 95% CI: 1.016-8.624, p = 0.047), relapsed/refractory AL (OR = 3.035, 95% CI: 1.265-7.354, p = 0.013), septic shock (OR = 5.108, 95% CI: 1.794-14.547, p = 0.002), platelets < 30 × 109/L before BSI (OR = 7.785, 95% CI: 2.055-29.492, p = 0.003), and inappropriate empiric antibiotic therapy (OR = 3.140, 95% CI: 1.171-8.417, p = 0.023) were independent risk factors for 30-day mortality in AL patients with GNB BSI. Prior antibiotic exposure was a significant factor in the occurrence of MDR GNB BSI and CR GNB BSI. CR GNB BSI increased the risk of mortality in AL patients with GNB BSI.

Impact of Intrathecal Dexmedetomidine versus Intrathecal Fentanyl as Adjuvants to Bupivacaine on Post Spinal Urinary Retention in Knee Joint Arthroscopic Surgeries

Abstract Background Patients undergoing orthopedic surgery are prone to developing postoperative urinary retention (POUR). They have an estimated relative risk of 8% to 55% higher than other surgical patients. This inability to void increases patient’s risk of urinary tract infections (UTIs) and bacteremia, and can lead to chronic voiding difficulties due to bladder architecture alterations. A great degree of variability exists among studies describing the prevalence and risk factors of postoperative urinary retention and its management strategies. Objective To compare the effects of Dexmedetomidine or Fentanyl added to intrathecal bupivacaine in knee arthroscopic procedures in terms of the occurrence of postoperative urinary retention. Patients and Methods This prospective randomized clinical study was conducted at tertiary care hospital at Ain Shams University hospitals from September 2021 till Mars 2022 and performed on a total of 70 patients who assigned for knee joints orthoscopic surgery. Results The current study results revealed that the incidence of postoperative urine retention in dexmedetomidine group was 5.7% while was 28.6% in Fentanyl group, the difference was statistically significant. however, the need to postoperative urinary catheterization was statistically non-significantly among the two groups. The current study results revealed that the Time to achieve maximum block was significantly shorter in dexmedetomidine group and the duration of motor block statistically was significantly longer in dexmedetomidine group. Conclusion On the basis of current evidence, when compared to fentanyl, our study revealed that intrathecal dexmedetomidine, as adjuvant to local anesthetics for intrathecal injection, can statistically significantly prolong the duration of sensory and motor block, as well as the pain free period, meanwhile significantly reducing the incidence of urinary retention. Intrathecal dexmedetomidine seems to be an attractive alternative as an adjuvant to spinal bupivacaine in surgical procedures, especially those requiring long time. It has excellent quality of postoperative analgesia with minimal side effects.

Prevalence of Antibiotic Resistance Genes in Bacterial Isolates in Iran: A Systematic Review

Context: The widespread use of biocides containing quaternary ammonium compounds (QACs) in medical centers has led to resistant strains of microorganisms. This study aimed to evaluate the frequency of genes resistant to antiseptics in Iranian bacterial isolates. Methods: The present study was conducted as a systematic review. The keywords in the titles or abstracts of articles published in Persian and English were monitored. The search was performed in databases without a time limit. Results: The results showed a total of 975 bacterial isolates. The most common disinfectant-resistant genes in gram-positive isolates were QacAB genes, with an average of 28.48; SMR gene, with an average of 19.8; and qacE and qacEΔ1 genes, with an average of 45 in gram-negative isolates. Gram-negative isolates containing qacE and qacEΔ1 genes were mainly detected in patients hospitalized in intensive care, internal diseases, and infectious diseases wards and from trachea and urine samples. Conclusions: The unique conditions of the intensive care units and the use of invasive tools such as urinary catheters were the leading causes of infection with resistant pathogens. In addition, diversity in infection control measures like the type, amount, and concentration of disinfectants used in different hospital departments were other reasons for resistance to antiseptics in medical environments. Indiscriminate use of antibiotics caused microbial resistance in the same way antibiotics did not affect many microbial diseases, and arbitrary use caused the highest microbial resistance.