Case Of Urosepsis Research Articles

Four-year variation in pathogen distribution and antimicrobial susceptibility of urosepsis: a single-center retrospective analysis.

Urosepsis is a common disease in urology, which is characterized by high treatment costs and high mortality. In the treatment of sepsis, anti-infection therapy is the most important means. However, the effect of empirical anti-infection therapy is often not ideal. Therefore, it is necessary to continuously monitor the prevalence of bacterial isolates in the blood culture of patients with urinary sepsis and their sensitivity to antibacterial drugs. This is of great significance to improve the efficacy of empirical antibiotic therapy for urosepsis. To elucidate the landscape of prevailing bacterial profiles and their antimicrobial susceptibilities in urosepsis cases, and to furnish robust clinical evidence to underpin the timely initiation of empirical antibiotic treatment. Collect the basic information and blood culture results of patients with urosepsis hospitalized from 2017 to 2020. Retrospective analysis of bacterial species and antimicrobial susceptibility in urosepsis and changes over 4 years. Gram-negative bacteria (178 isolates, 75.11%) constituted the main pathogens causing urosepsis, followed by Gram-positive bacteria (46 isolates, 19.41%) and fungus (13 isolates, 5.48%). The sensitivity of ertapenem, meropenem, amikacin, and imipenem to Gram-negative bacteria all exceeded 85%. The sensitivity rates of levofloxacin, gentamicin, and ciprofloxacin are decreasing every year (p < 0.05). Tigecycline, vancomycin, and linezolid exhibited excellent sensitivity against Gram-positive bacteria. Among fungi, fluconazole demonstrated universal sensitivity, while itraconazole-resistant isolates have been found, and amphotericin B is still effective. Analysis of blood culture results of patients more accurately reflected the etiology of urosepsis, mainly Escherichia coli, Enterococcus, and Klebsiella pneumoniae. If there are no definitive blood culture results, empiric treatment of urosepsis should not include fluoroquinolone antibiotics. Cefepime, cefoxitin, and ceftazidime are the most sensitive antibiotics to Gram-negative bacteria besides carbapenem antibiotics. In addition, the current situation regarding extended-spectrum β-lactamase-producing bacteria and carbapenem-resistant Enterobacteriaceae bacteria resistance is extremely concerning with limited therapeutic options available. Strengthening antibiotic management practices and exploring novel antibacterial agents can help mitigate this issue.

Transitioning from transrectal to transperineal prostate biopsy using a freehand cognitive approach.

To report a single-centre experience of a complete transition from transrectal (TR) to transperineal (TP) prostate biopsy under local anaesthesia using a freehand cognitive coaxial approach and without use of antibiotic prophylaxis. Analysis was performed of a prospective database of patients undergoing prostate biopsy performed by four surgeons between 1 June 2018 and 31 May 2022. Outcomes of interest were complications, cancer detection rate, inter-operator reliability, and tolerability. Overall, 1915 patients underwent 2337 separate prostate biopsy sessions. Only 2.4% patients in the TP group received antibiotic prophylaxis, while 100% received antibiotics in the TR group. The complication rate was significantly lower in the TP group compared to the TR group (0.3% vs 5.0%, P < 0.001). In contrast to the TR group, there were no cases of urosepsis or admissions to intensive care in the TP group. The total cancer detection rate by TP biopsy was 70% and the overall pathology detection rate was 88.4%. There was no difference in cancer or pathology detection between operators. A stable level of cancer detection was reached early on for both Prostate Imaging-Reporting and Data System 4 and 5 lesions. All cases performed were performed successfully without need for early termination. Implementing a complete transition from TR to TP biopsy can result in a significant reduction in complications and hospital re-admissions. A cognitive freehand coaxial technique is well tolerated by patients and achieves a high cancer detection rate.

Abstract 12011: A Case of Emphysematous Pyelonephritis With Use of Empagliflozin

Background: SGLT2i improve cardiovascular (CV) outcome in patients with HFrEF with or without diabetes (DM). Although recent trials and metanalysis have showed improve renal outcomes with SGLT-2i, one should be aware of the potential serious adverse effects with this group of medications including life threatening UTI. Case: 50-year-old female with history of type 2 DM presented with septic shock due to bilateral (B/L) pyelonephritis, with no associated renal calculi. CT of the abdomen also revealed emphysematous pyelonephritis of the left kidney. Few days later, patient went into PEA requiring intubation with return of spontaneous circulation within 4 minutes of advanced cardiac life support. Patient was extubated subsequently later on during her hospitalization. Work up for PEA revealed depressed left ventricular systolic function with an EF of 25-29% with no wall motion abnormality. Patient also developed decompensated HFrEF with development of b/l pleural effusion and generalized anasarca. Cardiology was consulted for management of her cardiomyopathy. She was recommended coronary angiography but she declined. Therefore, Patient was started on guideline direct medical therapy for HF with metoprolol succinate, lisinopril and spironolactone. Due to recent evidence of SGLT-2i improving CV outcomes in patients with HFrEF, it was also recommended to start SGLT-2i. Discussion: On further reviewing regarding use of SGLT-2i and association with UTI, we found a case report causing emphysematous pyelonephritis with use of canagliflozin. Medication reconciliation done at the time of discharge revealed that patient was recently initiated on empagliflozin three months prior to her admission. Therefore, it was speculated that her emphysematous pyelonephritis could be one of the rare complications of SGLT-2i since no other etiologies was noted per urological workup and we decided not to continue SGLT-2i. A search of FAERS from March 2013 through October 2014 identified 19 cases of urosepsis reported with the SGLT2 inhibitors (canagliflozin [n=10] and dapagliflozin [n=9]). All cases resulted in hospitalization. No deaths were reported. Clinicians should be aware of potential life-threatening UTI which may occur with SGLT-2i use.

Intrarenal pressures during flexible ureteroscopy: aninsight into safer endourology.

To assess intrarenal pressures (IRPs) and complication rates after flexible ureteroscopy (fURS), and to assess factors that contribute to raised IRPs and postoperative complications. After informed consent patients underwent fURS under general anaesthesia. The transducer of a 0.3556 mm (0.014″) pressure guidewire was placed in the renal pelvis for live recording of IRPs. The fURS procedures were performed in a routine manner under antibiotic cover with the aim of dusting the calculus to completion. The operating surgeon was blinded to the live-recorded IRPs. A total of 40 fURS procedures were performed in 37 patients (26 male and 11 female). The mean age was 50.5 years. As a cohort, the mean of average IRPs was 34.8 mmHg and the mean of maximal IRPs was 128.8 mmHg. Pearson's correlation showed a significant inverse correlation between the mean IRP and age (r[38]: -0.391, P = 0.013). Three cases experienced postoperative deviations from uncomplicated recovery, with two being hypotensive and one case being both hypotensive and hypoxic. Three cases returned to the emergency department within 30 days of surgery, with two cases of flank pain and one case of urosepsis with positive urine cultures. The patient presenting with urosepsis had exhibited IRPs exceeding the mean. The IRPs changed significantly from normal baseline levels during routine fURS. The mean IRP during fURS correlates with patient age, but not with other factors. The IRP may be related to increased complication rates at fURS. Understanding factors that influence IRP will allow urologists to better manage this intraoperatively.

Cryoballoon ablation for atrial fibrillation in octogenarians: a propensity score-based analysis with a younger cohort.

In terms of safety and efficacy, cryoballoon ablation (CB-A) has become a valid option for achieving pulmonary vein isolation (PVI) in patients affected by symptomatic atrial fibrillation. However, CB-A data in octogenarians are still scarce and limited to single-centre experiences. The present multicentre study aimed to compare the outcomes and complications of index CB-A in patients older than 80 years with a cohort of younger patients. We retrospectively enrolled 97 consecutive patients aged ≥80 years who underwent PVI using the second-generation CB-A. This group was compared with a younger cohort of patients using a 1:1 propensity score matching. After the matching, 70 patients from the elderly group were analysed and compared with 70 younger patients (control group). The mean age was 81.4 ± 1.9 years among octogenarians and 65.2 ± 10.2 years in the younger cohort. The global success rate after a median follow-up of 23 [18-32.5] months was 60.0% in the elderly group and 71.4% in the control group (P = 0.17). Phrenic nerve palsy was the most common complication occurring in a total of 11 patients (7.9%): in 6 (8.6%) patients in the elderly group and in 5 patients (7.1%) in the younger group (P = 0.51). Only two (1.4%) major complications occurred: one (1.4%) femoral artery pseudoaneurysm in the control group, which resolved with a tight groin bandage, and one (1.4%) case of urosepsis in the elderly group. Arrhythmia recurrence during the blanking period and the need for electrical cardioversion to restore sinus rhythm after PVI were found to be the only independent predictors of late arrhythmia relapses. The present study showed that CB-A PVI is as feasible, safe and effective among appropriately selected octogenarians as it is in younger patients.

The impact of sodium-glucose cotransporter-2 inhibitors on the outcome of patients with colorectal adenocarcinoma.

3583 Background: The mortality of colorectal cancer remains high despite the development of novel anti-neoplastic agents. Preclinical studies have shown that colorectal cancer upregulates the expression of sodium-glucose cotransporter 2 (SGLT2) channels and inhibition of these channels by SGLT2 inhibitors (SGLT2i) reduces tumor proliferation. We aimed to investigate the impact of SGLT2i on the outcome of patients with colorectal cancer. Methods: We conducted a retrospective cohort study by including all adult patients with colorectal adenocarcinoma and type 2 diabetes mellitus in two tertiary centers in Taiwan. SGLT2i and non-SGLT2i patients were matched 1:1 based on age, sex, and cancer stage. The primary outcome was overall survival (OS) and progression-free survival (PFS), and the secondary outcomes were previously reported serious adverse events associated with the use of SGLT2i. Results: We identified 1347 patients with colorectal cancer and type 2 diabetes mellitus, from which 92 patients in the SGLT2i cohort were matched to the non-SGLT2i cohort. Compared to non-SGLT2i recipients, SGLT2i recipients had a higher rate of OS (5-year OS: 86.2% [95% CI: 72.0-93.5] vs. 62.3% [95% CI: 50.9-71.8], p = 0.013) and PFS (5-year PFS: 76.6% [95% CI: 60.7-86.7] vs. 57.0% [95% CI: 46.2-66.4], p = 0.021). In Cox proportional hazard analyses, the use of SGLT2i was associated with a 50-70% reduction in the risk of all-cause mortality and disease progression. The rate of cancer-associated mortality was lower in the SGLT2i group (7% vs. 21%, p = 0.005). SGLT2i were not associated with an increased risk of sepsis, hypoglycemia, or acute kidney injury. We did not detect any cases of urosepsis or diabetic ketoacidosis in the SGLT2i group. Conclusions: The use of SGLT2i was associated with a higher rate of survival in colorectal cancer patients with diabetes mellitus. [Table: see text]

Cryoballoon ablation for atrial fibrillation in octogenarians: a propensity-score matching comparison with a cohort of younger patients

Abstract Funding Acknowledgements Type of funding sources: None. Background Atrial fibrillation (AF) is the most frequent sustained cardiac arrhythmia in adults with a current estimated prevalence between 2-4% in the general population. AF prevalence increases with advancing age and it is estimated that nearly 10% of octogenarians may be affected by this arrhythmia. In terms of safety and efficacy Cryoballoon ablation (CB-A) has become a valid option for achieving pulmonary vein isolation (PVI) in patients affected by AF. However, data regarding CB-A in octogenarians are still scarce and limited to single center experiences, therefore the present multicenter study aimed to compare the outcomes and complications of index CB-A in patients older than 80 years-old with a cohort of younger patients. Methods and Results We retrospectively enrolled 97 consecutive patients aged ≥ 80 years who underwent PVI by means of the second generation CB-A. This group was compared with a younger cohort of patients using a 1:1 Propensity score matching. After the matching, 70 patients of the elderly group were analyzed and compared with 70 younger patients (control group). Mean age was 81.4 ± 1.9 years among octogenarians and 65.2 ± 10.2 years in the younger cohort. The global success rate after a median follow up of 23 [18 - 32.5] months was 60.0% in the elderly group and 71.4% in the control group (p = 0.17) (Fig.1). Phrenic nerve palsy (PNP) was the most common complication occurring in a total of 11 patients (7.9%): in 6 (8.6%) patients for the elderly group and in 5 patients (7.1%) of the younger group (p = 0.51). PNP always recovered within the day after CB-A and did not hinder electrical isolation of any of the septal PVs. Only 2 (1.4 %) major complications occurred: 1 (1.4%) small femoral artery pseudoaneurysm in the control group, which resolved with a tight groin bandage without the need of surgical repair and 1 (1.4%) case of urosepsis in the elderly group with subsequent acute kidney failure and need of renal replacement therapy. Arrhythmia recurrence during the blanking period (BP) and need of electrical cardioversion (ECV) to restore sinus rhythm after PVI were found to be the only independent predictors of late arrhythmia relapses (Fig.2). Conclusions The present study showed that CB-A PVI is as feasible, safe and effective among octogenarians as it is in younger patients.

P385 CRYOBALLOON ABLATION FOR ATRIAL FIBRILLATION IN OCTOGENARIANS: A PROPENSITY–SCORE MATCHING COMPARISON WITH A COHORT OF YOUNGER PATIENTS

Abstract Background Atrial fibrillation (AF) is the most frequent sustained cardiac arrhythmia in adults with a current estimated prevalence between 2–4% in the general population. AF prevalence increases with advancing age and it is estimated that nearly 10% of octogenarians may be affected by this arrhythmia. In terms of safety and efficacy, Cryoballoon ablation (CB–A) has become a valid option for achieving pulmonary vein isolation (PVI) in patients affected by symptomatic atrial fibrillation (AF). However, CB–A data in octogenarians are still scarce and limited to single–centre experiences. The present multicenter study aimed to compare the outcomes and complications of index CB–A in patients older than 80 years old with a cohort of younger patients. Methods and results We retrospectively enrolled 97 consecutive patients aged ≥ 80 years who underwent PVI using the second–generation CB–A. This group was compared with a younger cohort of patients using a 1:1 Propensity score matching. After the matching, 70 patients from the elderly group were analyzed and compared with 70 younger patients (control group). The mean age was 81.4 ± 1.9 years among octogenarians and 65.2 ± 10.2 years in the younger cohort. The global success rate after a median follow–up of 23 [18 – 32.5] months was 60.0% in the elderly group and 71.4% in the control group (p = 0.17). Phrenic nerve palsy (PNP) was the most common complication occurring in a total of 11 patients (7.9%): in 6 (8.6%) patients for the elderly group and in 5 patients (7.1%) of the younger group (p = 0.51). Only 2 (1.4 %) major complications occurred: 1 (1.4%) femoral artery pseudoaneurysm in the control group, which resolved with a tight groin bandage and 1 (1.4%) case of urosepsis in the elderly group. Arrhythmia recurrence during the blanking period (BP) and the need for electrical cardioversion (ECV) to restore sinus rhythm after PVI were found to be the only independent predictors of late arrhythmia relapses. Conclusions The present study showed that CB–A PVI is as feasible, safe and effective among octogenarians as it is in younger patients.

A rare case of urosepsis caused by multidrug-resistant Escherichia hermannii in an immunocompetent toddler

Escherichia hermannii is a gram-negative bacillus from the Enterobacteriaceae family. The formation of a yellow pigment distinguishes E. hermannii from Escherichia coli in the laboratory. This organism is a rare cause of invasive infections, initially thought to be a colonizer microbe with low- pathogenicity. Our report discusses a case of urosepsis caused by E. hermannii in a 17-month-old female patient with a complaint of fever and irritability and also a history of urinary tract infection (UTI) with nephrolithiasis. The isolated bacterium from urine and blood cultures was multidrug-resistant E. hermannii. The patient’s symptoms were improved after treatment with cotrimoxazole and imipenem. This case provides evidence that E. hermannii can be pathogenic and infect the urinary tract. Moreover, the bacterium isolated from this patient indicates that more resistant E. hermannii strains are forming.

Comparison between prone and supine nephrolithotomy in pediatric population: a double center experience

Stone disease in the pediatric age is an increasing issue. Percutaneous Nephrolithotomy (PNL) can be used for larger and complex stones. As in adults it can be performed in the supine or prone position. We retrospectively reviewed two centers' experience in prone and supine PNL in children to analyze its results and complications. 33 patients underwent prone and 19 supine procedures. Patients in the prone group were younger than in the supine, while no significant differences were found in stone burden, access size, operative time or complications. Complications were: 8 and 4 Clavien 1 for the prone and supine group, respectively, one case of urosepsis (4b) in the prone and 2 cases of Clavien 3 in the supine group (double J stent placement for renal colic and ureteroscopy for steinstrasse). Tubeless procedures and mean nephrostomy time were in favor of the supine group, whereas fluoroscopy time and ureteral drainage stay were in support of the prone group. Stone free rate was better in the supine group (83.3 vs 66.6%), possibly reflecting the capability to perform a combined approach in 12 patients (allowing to reach all the calyx with simultaneous anterograde and retrograde access) or younger age in the prone group (13 vs 2 patients ≤5years), with no differences in stone burden. Supine approach seems to guarantee higher stone-free rates. Larger series are necessary to determine what the best technique is in terms of X-ray exposure, operative time and complications.

MO156: The Choice of Empiric Antimicrobial Agent and its Association with Outcomes in Kidney Transplant Recipients with Urinary Sepsis

Abstract BACKGROUND AND AIMS Efficient antibiotic therapy remains the cornerstone of successful sepsis treatment. Urinary sepsis, which remains the most common sepsis type in kidney transplant recipients (KTRs), is characterized by high prevalence of multidrug-resistant (MDR) bacterial strains, often limiting the choice of antimicrobial agents. The primary aim of this study was to elucidate the efficiency of primary empiric antimicrobial therapy in KTRs hospitalized for urosepsis, depending on the antibiotic choice. METHOD All primary urosepsis cases in KTRs hospitalized in 2014–2019 in the Transplantation Department of the Wroclaw Medical University Hospital were included retrospectively as the study group (n = 101). A total of 100 random KTRs hospitalized for primary urinary tract infection (UTI) were set as control group. The primary endpoint was the need for antibiotic change after 3 days of completed empiric treatment (due to lacking clinical response or proven antibiotic resistance). All patients were treated according to SSC guidelines with delay in antibiotic administration of no more than 1 h after the diagnosis of sepsis. RESULTS In the urosepsis and UTI groups, the need for antibiotic change after 3 days of treatment equaled 45.6% and 11%, respectively. Patients with urosepsis and inappropriate antibiotic therapy were at increased risk of death (OR = 10.1 with P = .021), need for acute renal replacement therapy (OR = 4.73 with P = .012) and non-recovery from AKI (OR = 3.18 with P = .031). Similar but not statistically significant trend was observed in the UTI group for lacking recovery from AKI (OR = 1.64 with P = .636). In both groups, the length of hospital stay was significantly longer in patients who did not receive appropriate empiric antimicrobial drug. Following antimicrobial agents were associated with appropriate successful treatment rates in the urosepsis and UTI groups: ciprofloxacine (0% versus 63%), amoxiciline with clavulonic acid (16.7% versus 89%), piperaciline with tazobactam (57% versus 60%), cefuroxime (67% versus 100%), third generation cephalosporines (76% versus 92%) and carbapenemes (100% versus 100%). CONCLUSION A delay in successful antibiotic therapy, caused by inappropriate choice of antimicrobial agents, for the treatment of urosepsis in KTRs is associated with detrimental kidney graft outcomes. Ciprofloxacine and amoxiciline with clavulonic acid should not be used for empiric therapy of urosepsis in this patient cohort. The development of urosepsis in KTRs as compared to non-septic UTI is associated with greater risk of antibiotic resistance among causative microorganisms and increased risk of antimicrobial failure.

Rigid ureteroscopic lithotripsy in the lateral decubitus position for upper urinary tract stones

BackgroundThe current study aimed to assess a novel ureteroscopic technique developed for treating upper urinary calculi based on a specially designed lateral decubitus body position that could avoid stone loss by adjusting to the effects of gravity.MethodsThis retrospective study examined patients with upper urinary calculi who were surgically treated from November 2008 to January 2020, using a new body position and a rigid ureteroscope. Clinical outcomes, stone-free rates, operative times and complications were evaluated, and factors that could influence treatment success were determined.ResultsIn total, 1080 patients were included, and 1145 operations were performed. The maximum calculus diameters were 11.22 ± 5.01 mm. Operative times were 48.60 ± 27.44 min. A total of 1042 cases were successfully treated, with a stone-free rate of 91.00%. Multivariate analysis showed that female sex (OR = 2.135, 95% CI 1.332–3.422, P = 0.002), thin scope standby (OR = 1.643, 95% CI 1.074–2.514, P = 0.022), laser lithotripsy (OR = 5.087, 95% CI 2.400–10.785, P = 0.000) and stone size (OR = 0.946, 95% CI 0.912–0.981, P = 0.003) were independently associated with stone-free outcomes. In total, 2 ureteral perforations, 2 ureteric avulsions and 4 urosepsis cases were observed, but were all cured without sequelae.ConclusionsUreteroscopic lithotripsy in the lateral decubitus position is a safe and effective technique for treating upper urinary tract calculi, especially upper ureteral calculi.

Bilateral same-session flexible ureteroscopy for renal stones: a feasible method.

A staged ureteroscopic procedure is generally preferred to treat bilateral renal stones. In this study, we evaluated the feasibility of bilateral same-session flexible ureteroscopy (BS-fURS) in renal stones. A total of 81 patients underwent bilateral BS-fURS between March 2014 and March 2021 for bilateral renal stones. The mean stone burden per patient was 17±4 (range 7–27 mm). The average stone density was 1240 HU (970 to 1510). We used 4 types of ureteroscopes: Olympus URF-V2 (34 cases), Storz Flex X2 (30 cases), single-use PUSEN PU 3022 (12 cases), and single-use PUSEN – PU 3033A (5 cases). We specifically set our Holmium laser for dusting, pop-corning, and fragmenting. We found 31 calcium oxalate monohydrate cases, 11 calcium oxalate dehydrate cases, 17 uric acid cases, and 22 magnesium ammonium phosphate cases. The mean operating time was 77 min. (range 52 to 85) for both renal units. The SFRs were evaluated between 1 and 3 months with computed tomography (fragments >3 mm were defined as residual). Double J stenting (6Fr.) was applied bilaterally in 8 cases (9.87%) and unilateral in 34 cases (41.97%). The overall SFRs after 1 and 2 procedures were 81.48% (66/81 cases) and 92.59% (75/81 cases), respectively. Postoperative complications after an overall 96 procedures were Clavien I-II (18.75%) and Clavien III (3.12%). Urinary tract infections were observed in 13 cases (16.04%) without any case of urosepsis. Our experience suggested some BS-fURS advantages as a single anesthetic session and potentially reduced cost associated with treatment. BS-fURS seem feasible, especially for medium-sized bilateral renal stones in high-volume centers.

Empiric antibiotic and in-vitro susceptibility of urosepsis pathogens: do they match? The outcome of a study from south India

Urosepsis is life threatening, unless treated immediately. Empirical treatment with appropriate antibiotics lowers the risk of a poor outcome. However, with increasing resistance among common uropathogens, there is a need for continuous review of the existing protocol to determine whether there is a correlation between empirical antibiotic therapy and in-vitro susceptibility pattern of the pathogens causing urosepsis. A prospective study was carried out on 66 confirmed cases of urosepsis from January 2017 to December 2018 after obtaining ethical clearance. Demographic details, risk factors, length of hospital stay, bacteriological profile, empirical antibiotic given, and change in antibiotic following susceptibility report and outcome was recorded. Among the 66 urosepsis cases 63 of them were started on empiric antibiotic. The correlation between the empirical antibiotic given and the in-vitro antimicrobial susceptibility was found to be significant with a p value < 0.0001. Among the 63 for whom empiric antibiotics was started further escalation of antibiotic was done in 46 patients. The remaining 20% of cases were changed over to a different antibiotic, in line with susceptibility report. The mortality rate was (15.1%) with a confidence interval of (CI = 15 ± 3.5). The association between the risk factors for urosepsis and their effect on mortality rate was analyzed. Diabetes mellitus and chronic kidney disease were identified as important independent risk factors and had direct influence on the mortality rate with significant p value of 0.0281 and 0.0015 respectively. A significant correlation was identified between the empirical antibiotic given and in-vitro antibiotic susceptibility pattern.

Clinicolaboratory Profile and Outcome of Patients with Urosepsis at a Tertiary Care Centre in Southern India

Introduction: Urosepsis is a serious, life-threatening consequence of a complicated Urinary Tract Infection (UTI). It is caused by bacterial infection of the urinary tract or prostate that spreads into the bloodstream. Since urosepsis is associated with a very high mortality rate (20-40%), an early diagnosis and identification of the causative bacteria is important so as to facilitate a prompt treatment with appropriate antibiotics. Nearly 50% cases of urosepsis are caused by the Gram Negative Bacterial (GNB) pathogen, Escherichia coli(E. coli). Aim: To determine the bacteriological profile, antimicrobial susceptibility pattern, phenotypic resistance of the organisms associated with urosepsis and to correlate the levels of proinflammatory markers with the clinical outcome of the patient associated with urosepsis. Materials and Methods: This was a prospective observational study including all patients with simultaneously positive urine and blood cultures, with identical bacterial isolate(s). The details of clinical presentation, antibiotic therapy and other relevant information such as C-Reactive Protein (CRP) and Procalcitonin (PCT) values were recorded and analysed using Microsoft office excel 2013. Results:E. coli was the commonest isolate (43/53, 81.1%). Of the total 43 E. coli isolates, 4/43 (9.3%) were Extended Spectrum Beta Lactamase (ESBL) producers and 23/43 (53.49%) were Carbapenemase producers. Significant rise of the proinflammatory markers (PCT&gt;10 ng/mL) and (CRP&gt;100 mg/l) were associated with high mortality (49%). Out of the 53 patients, 43.4% (23/53) patients had more than one risk factor associated with severe sepsis and poor prognosis. conclusion: Early recognition of symptoms followed by accurate diagnosis and early goal directed therapy is essential to decrease morbidity and mortality from urosepsis.

Urosepsis and fever after laser lithotripsy procedures in a single Australian institution

Objective: To identify predictive and modifiable risk factors associated with fever and urosepsis in the post-operative period of ureteropyeloscopy and laser lithotripsy procedures for urolithiasis. Materials and methods: Records from 284 consecutive adult patients undergoing laser lithotripsy at John Hunter Hospital, Australia (2013–2017) were retrospectively reviewed. A wide variety of demographics, results, anaesthetic and operative data were compared between those who developed infectious complications (defined as fever ⩾38 or sepsis from a urinary source) and those who did not. Results: In total, 372 cases of Holmium:YAG laser lithotripsy were included. Despite excellent antibiotic prophylaxis rates, 10.2% ( n=38) of patients developed infectious complications (81.6% within 24 hrs). Urosepsis cases were twice as likely to have a positive pre-operative urine culture ( p=0.0148) and nearly four times as likely to have mixed growth ( p=0.0001). The proportion of smokers was twice as high in the infectious complication group (42.1%, p=0.0017), as was incomplete stone clearance (31.6% compared to 12.3%, p=0.0013), and female patients were twice as likely to develop an infectious complication as men (16.7% of all female cases, 7.1% of all male cases). Conclusion: Infectious complications post laser lithotripsy remain common in the Australian setting. Positive pre-operative urine culture, current smoking status, incomplete stone clearance and female gender were identified as significant risk factors. We propose high-risk patients should be monitored in the post-operative period with a low threshold for extending antibiotic therapy and every opportunity taken for smoking cessation counselling. Level of evidence: 3a (according to Oxford centre for evidence-based medicine)

Usefulness of next-generation DNA sequencing for the diagnosis of urinary tract infection.

Acute urinary tract infection (UTI) is a highly common clinical condition. Although bacterial culture is the gold standard diagnostic test, false negative results may be possible, leading to the pathogen being unidentified. In recent years, bacterial DNA sequencing analysis has garnered much attention, but clinical studies are rare in Japan. In this study, we assessed the usefulness of next-generation DNA sequencing (NGS) analysis for acute UTI patients. We thus performed an observational, retrospective case series study. Urine and blood samples were collected from ten acute UTI patients, of whom four had also been diagnosed with urosepsis. Seven variable regions of bacterial 16S rRNA genes were amplified by PCR and then sequenced by IonPGM. The identified bacterial species were compared with those identified using the culture tests and the clinical parameters were analyzed. As a result, the NGS method effectively identified predominant culture-positive bacteria in urine samples. The urine NGS also detected several culture-negative species, which have been reported to be potentially pathogenic. Out of four urosepsis cases, three were pathogen-positive in blood NGS results, while two were pathogen-negative in blood culture. In one sepsis case, although blood culture was negative for Escherichia coli, this species was detected by blood NGS. For non-sepsis cases, however, blood NGS, as well as blood culture, was less effective in detecting bacterial signals. In conclusion, NGS is potentially useful for identifying pathogenic bacteria in urine from acute UTI patients but is less applicable in patients who do not meet clinical criteria for sepsis.

185 Impact of Eliminating a Urinalysis With Reflex to Urine Culture on Urine Testing Patterns in the Emergency Department

As antibiotic resistance has increased as a public health threat, attention has focused on interventions aimed at reducing unnecessary antibiotic prescribing. This includes the overtreatment of asymptomatic bacteriuria (ASB), due to unnecessary urine testing with subsequent diagnosis of urinary tract infection (UTI) despite absence of clinical symptoms. With ASB common in some populations, such as older adults, stewardship programs should seek to reduce unnecessary urine testing on asymptomatic patients. A reflex urinalysis (UA) (defined as WBC> 5/hpf = urine culture) order is commonly used in the emergency department (ED) setting due to perceived operational efficiency benefits; however, this can result in unnecessary diagnosis and treatment of UTI. The objective of the study was to evaluate the impact of removing reflex UA from the computerized physician order entry system (CPOE) on overall urine testing patterns in an academic ED. We conducted a retrospective study of all patients who received any urine test in the ED within the six month pre- and post-intervention periods. A one-month washout period was used surrounding reflex UA removal. The intervention consisted of a notification to providers via e-mail who frequently used reflex UA (academic detailing) and removal of reflex UA from personal and ED preference lists and order sets (systems approach). A positive culture was defined as growth of one or more pathogenic organisms at 104 CFU/ml or greater. Patient demographic and urine testing data were extracted from the electronic health record and analyzed using STATA SE15. Primary outcomes were the rates of total cultures and contaminated cultures per 1000 ED visits. Patient safety was assessed by analysis of any missed urine cultures in pyelonephritis or urosepsis cases. Urine culture cost was estimated from the Medicare Clinical Laboratory Fee Schedule. The study included 17,061 patients with 20,029 urine tests (mean age, 45.7 years; 85.0% white; 60.8% female). The six-month average urine culture order rate fell from 63.2 per 1000 ED visits to 35.3 per 1000 post-intervention, a 41% overall reduction (P<0.001). The rate of contaminated cultures was 16.0 per 1000 ED visits before the intervention compared to only 6.9 after (P<0.001) (see Figure). Of those diagnosed with pyelonephritis or sepsis, 72.8% received a urine culture before intervention in contrast to 56.9% after intervention (P<0.001). Cost savings from reduction in urine cultures was estimated to be $10,830. Removal of reflex UA from the CPOE led to significant reductions in the rates of total cultures performed as well as contaminated cultures. However, there was also a significant decrease in urine cultures obtained for conditions where a culture is typically recommended. Ordering systems greatly impact urine testing practices and could have future implications in reducing overtreatment of ASB. Any intervention or change to eliminate reflex UA orders should be accompanied with robust provider education emphasizing the need to separately order urine cultures when indicated.

First report of infection with Pseudomonas citronellolis: a case of urosepsis.

This is the first case report of infection with the environmental bacterium Pseudomonas citronellolis, presented here as a urinary tract and bloodstream infection that occurred shortly after a transrectal ultrasound-guided prostate biopsy.

Stercoral Perforation of the Rectum:

Stercoral perforation of the rectum is a rare disease. It is a potentially fatal complication of untreated chronic constipation. Presenting symptoms and signs are variable according to the site of the perforation. A 60-year-old male patient presented to the emergency room with dizziness and decreased level of consciousness. He was admitted for management under care of medical team as a case of urosepsis. Two days after admission he developed picture of Fournier gangrene. The underlying cause was found to be rectal perforation. Stercoral perforation is an emergency that can be missed if not highly suspected. We present a case of stercoral rectal perforation with picture of urosepsis and Fournier gangrene as presenting symptoms. Stercoral perforation is a potentially fatal disease with unspecific presentations that need to be highly suspected in patients with chronic constipation and severe sepsis.