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Hamel C, Avard B, Brahm G, Fung D, Martens B, Michaud A, Miller L, Sala E, Wallis CJD, Fung C. Canadian Association of Radiologists Genitourinary Imaging Referral Guideline. Can Assoc Radiol J 2024:8465371241261317. [PMID: 39054585 DOI: 10.1177/08465371241261317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024] Open
Abstract
The Canadian Association of Radiologists (CAR) Genitourinary Expert Panel is made up of physicians from the disciplines of radiology, emergency medicine, family medicine, nephrology, and urology, a patient advisor, and an epidemiologist/guideline methodologist. After developing a list of 22 clinical/diagnostic scenarios, a rapid scoping review was undertaken to identify systematically produced referral guidelines that provide recommendations for one or more of these clinical/diagnostic scenarios. Recommendations from 30 guidelines and contextualization criteria in the Grading of Recommendations, Assessment, Development, and Evaluations (GRADE) for guidelines framework were used to develop 65 recommendation statements across the 22 scenarios (2 scenarios point to the CAR Obstetrics and Gynecology Diagnostic Imaging Referral Guideline). This guideline presents the methods of development and the referral recommendations for haematuria, hypertension, renal disease (or failure), renal colic, renal calculi in the absence of acute colic, renal lesion, urinary tract obstruction, urinary tract infection, scrotal mass, or pain, including testicular torsion, adrenal mass, incontinence, urgency, and frequency, chronic pelvic pain, elevated PSA, infertility, and pelvic floor.
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Affiliation(s)
- Candyce Hamel
- Canadian Association of Radiologists, Ottawa, ON, Canada
| | - Barb Avard
- North York General Hospital, Toronto, ON, Canada
| | - Gary Brahm
- Department of Medical Imaging, Western University, London Health Sciences Centre, London, ON, Canada
| | - Daisy Fung
- Kaye Edmonton Clinic Family Medicine Clinic, Edmonton, AB, Canada
| | | | | | - Lisa Miller
- Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Eric Sala
- Memorial University of Newfoundland, St. John's, NL, Canada
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Corse TD, Rahmani LD, Hasley HL, Kim K, Harrison R, Fromer DL. New avenue of diagnostic stewardship: procedural stewardship for recurrent urinary tract infections in female patients. ANTIMICROBIAL STEWARDSHIP & HEALTHCARE EPIDEMIOLOGY : ASHE 2023; 3:e231. [PMID: 38156218 PMCID: PMC10753495 DOI: 10.1017/ash.2023.507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 11/05/2023] [Accepted: 11/07/2023] [Indexed: 12/30/2023]
Abstract
Introduction Societal guidelines offer a weak recommendation to perform cystoscopy for female patients with recurrent urinary tract infections (rUTI) of advanced age and/or with high-risk features. These guidelines lack the support of robust data and are instead based on expert opinion. In this retrospective cohort study, we aim to determine the utility of cystoscopy in patients with and without high-risk features for rUTI. Materials and methods We identified 476 women who underwent cystoscopy for the evaluation of rUTI at a single tertiary academic medical center from May 1, 2015 and March 15, 2021. Patients were excluded if they had a competing indication for cystoscopy. Risk factors, demographic information, cystoscopic findings, and patient outcomes were analyzed. Results 192 (41.1%) were classified as having complicated UTI. We identified six patients (1.3%) with findings that prompted management to significantly impact patient outcomes. All six patients had high-risk features. 14 patients (3.0%) were found to have mucosal abnormalities prompting biopsy, three of which required general anesthesia. All 14 biopsies were ultimately benign. Conclusions Our findings demonstrate a low diagnostic yield and increased risk exposure for women undergoing cystoscopy for the evaluation of complicated rUTI. Additionally, our observations support prior studies indicating that cystoscopy has limited utility in the evaluation of rUTI without high-risk features.
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Affiliation(s)
- Tanner D. Corse
- Department of Urology, Hackensack Meridian School of Medicine, Nutley, NJ, USA
- Department of Urology, Hackensack University Medical Center, Hackensack, NJ, USA
| | - Linda Dayan Rahmani
- Department of Urology, Hackensack Meridian School of Medicine, Nutley, NJ, USA
| | - Hunter L. Hasley
- Department of Urology, Hackensack Meridian School of Medicine, Nutley, NJ, USA
| | - Katherine Kim
- Department of Urology, Hackensack Meridian School of Medicine, Nutley, NJ, USA
| | - Robert Harrison
- Department of Urology, Hackensack University Medical Center, Hackensack, NJ, USA
| | - Debra L. Fromer
- Department of Urology, Hackensack Meridian School of Medicine, Nutley, NJ, USA
- Department of Urology, Hackensack University Medical Center, Hackensack, NJ, USA
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Zhang G, Dai Z, Yao Y, Yu X, Gao Y, Liang XM, Chen M. Analysis of factors with low positive predictive value in the diagnosis of urinary tract infection by flow cytometry. World J Urol 2023; 41:3611-3618. [PMID: 37898576 DOI: 10.1007/s00345-023-04676-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 10/03/2023] [Indexed: 10/30/2023] Open
Abstract
PURPOSE Culture-negative urine specimens can be rapidly screened by urine flow cytometry (UFC), while low positive predictive value (PPV) limits the clinical application. We explored the factors associated with a low PPV. METHODS A total of 5095 urine specimens were analyzed with UFC and culture. Diagnostic performance of leukocytes, bacteria, and BACT-info flags was evaluated by sensitivity, specificity, PPV, and negative predictive value (NPV). The association of contaminated culture and squamous epithelial cell count and BACT-info flag was performed by logistic regression analysis. RESULTS The NPVs of parallel combination of bacteria and leucocytes were 98.9% in males and 97.9% in females, and PPVs of serial combination were 86.6% and 77.8% in men and women, respectively. The PPV of Gram-negative flag was higher than that of Gram-positive flag. The proportions of contamination in the urine culture results of false positive specimens were 86.9% in males and 98.5% in females at the cutoff points of the serial combination, and these parameters were 53.2% in males and 85.6% in females for the Gram-positive flag. There was a statistically significant association between contaminated cultures and squamous epithelial cells count in females, but not in males. Associations between contaminated cultures and Gram-positive flags or Gram-pos/-neg flags were statistically significant, but there was no association between contaminated cultures and Gram-negative flags. CONCLUSIONS A serial combination of leukocytes and bacteria may maximize PPV in the diagnosis of bacterial urinary tract infection by urine flow cytometry, and contamination is the main reason for a low PPV.
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Affiliation(s)
- Guoqiang Zhang
- Center of Clinical Laboratory, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361004, China
- Institute of Infectious Disease, School of Medicine, Xiamen University, Xiamen, 361004, China
| | - Zhang Dai
- Center of Clinical Laboratory, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361004, China
- Institute of Infectious Disease, School of Medicine, Xiamen University, Xiamen, 361004, China
| | - Yihui Yao
- Center of Clinical Laboratory, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361004, China
| | - Xiaolu Yu
- Center of Clinical Laboratory, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361004, China
| | - Ying Gao
- Center of Clinical Laboratory, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361004, China
| | - Xian-Ming Liang
- Center of Clinical Laboratory, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361004, China.
- Institute of Infectious Disease, School of Medicine, Xiamen University, Xiamen, 361004, China.
| | - Meijun Chen
- Center of Clinical Laboratory, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361004, China.
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Chieng CCY, Kong Q, Liou NSY, Khasriya R, Horsley H. The clinical implications of bacterial pathogenesis and mucosal immunity in chronic urinary tract infection. Mucosal Immunol 2023; 16:61-71. [PMID: 36642381 DOI: 10.1016/j.mucimm.2022.12.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 12/21/2022] [Indexed: 01/15/2023]
Abstract
Urinary tract infections (UTIs) exert a significant health and economic cost globally. Approximately one in four people with a previous history of UTI continue to develop recurrent or chronic infections. Research on UTI has primarily concentrated on pathogen behavior, with the focus gradually shifting to encompass the host immune response. However, these are centered on mouse models of Escherichia coli infection, which may not fully recapitulate the infective etiology and immune responses seen in humans. The emerging field of the urobiome also inadvertently confounds the discrimination of true UTI-causing pathogens from commensals. This review aims to present a novel perspective on chronic UTI by linking microbiology with immunology, which is commonly divergent in this field of research. It also describes the challenges in understanding chronic UTI pathogenesis and the human bladder immune response, largely conjectured from murine studies. Lastly, it outlines the shortcomings of current diagnostic methods in identifying individuals with chronic UTI and consequently treating them, potentially aggravating their disease due to mismanagement of prior episodes. This discourse highlights the need to consider these knowledge gaps and encourages more relevant studies of UTIs in humans.
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Affiliation(s)
| | - Qingyang Kong
- Department of Microbial Diseases, Eastman Dental Institute, University College London, London, United Kingdom
| | - Natasha S Y Liou
- Department of Renal Medicine, University College London, London, United Kingdom; EGA Institute for Women's Health, University College London, London, United Kingdom
| | - Rajvinder Khasriya
- Department of Microbial Diseases, Eastman Dental Institute, University College London, London, United Kingdom
| | - Harry Horsley
- Department of Renal Medicine, University College London, London, United Kingdom.
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Smith AD, Nikolaidis P, Khatri G, Chong ST, De Leon AD, Ganeshan D, Gore JL, Gupta RT, Kwun R, Lyshchik A, Nicola R, Purysko AS, Savage SJ, Taffel MT, Yoo DC, Delaney EW, Lockhart ME. ACR Appropriateness Criteria® Acute Pyelonephritis: 2022 Update. J Am Coll Radiol 2022; 19:S224-S239. [PMID: 36436954 DOI: 10.1016/j.jacr.2022.09.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 09/01/2022] [Indexed: 11/27/2022]
Abstract
Acute pyelonephritis (APN) is a severe urinary tract infection (UTI) that has the potential to cause sepsis, shock, and death. In the majority of patients, uncomplicated APN is diagnosed clinically and is responsive to treatment with appropriate antibiotics. In patients who are high risk or when treatment is delayed, microabscesses may coalesce to form an acute renal abscess. High-risk patients include those with a prior history of pyelonephritis, lack of response to therapy for lower UTI or for APN, diabetes, anatomic or congenital abnormalities of the urinary system, infections by treatment-resistant organisms, nosocomial infection, urolithiasis, renal obstruction, prior renal surgery, advanced age, pregnancy, renal transplant recipients, and immunosuppressed or immunocompromised patients. Pregnant patients and patients with renal transplants on immunosuppression are at an elevated risk of severe complications. Imaging studies are often requested to aid with the diagnosis, identify precipitating factors, and differentiate lower UTI from renal parenchymal involvement, particularly in high-risk individuals. Imaging is usually not appropriate for the first-time presentation of suspected APN in an uncomplicated patient. The primary imaging modalities used in high-risk patients with suspected APN are CT, MRI, and ultrasound, although CT was usually not appropriate for initial imaging in a pregnant patient with no other complications. The ACR Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision process support the systematic analysis of the medical literature from peer-reviewed journals. Established methodology principles such as Grading of Recommendations Assessment, Development, and Evaluation or GRADE are adapted to evaluate the evidence. The RAND/UCLA Appropriateness Method User Manual provides the methodology to determine the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances in which peer-reviewed literature is lacking or equivocal, experts may be the primary evidentiary source available to formulate a recommendation.
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Affiliation(s)
- Andrew D Smith
- University of Alabama at Birmingham, Birmingham, Alabama.
| | - Paul Nikolaidis
- Vice-Chair, Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Gaurav Khatri
- UT Southwestern Medical Center, Dallas, Texas; Chief, Division of Body MRI; Interim Chief, Division of Abdominal Imaging; Program Director, Body MRI Fellowship
| | - Suzanne T Chong
- Indiana University, Indianapolis, Indiana; Committee on Emergency Radiology-General, Small, Emergency and/or Rural Practice
| | | | | | - John L Gore
- University of Washington, Seattle, Washington; American Urological Association
| | - Rajan T Gupta
- Duke University Medical Center, Durham, North Carolina
| | - Richard Kwun
- Swedish Medical Center, Issaquah, Washington; American College of Emergency Physicians
| | - Andrej Lyshchik
- Thomas Jefferson University Hospital, Philadelphia, Pennsylvania
| | - Refky Nicola
- Roswell Park Cancer Institute, Jacobs School of Medicine and Biomedical Science, Buffalo, New York
| | - Andrei S Purysko
- Cleveland Clinic, Cleveland, Ohio; ACR Learning Network, Prostate MR Image Quality Improvement Collaborative, Physician Leader
| | - Stephen J Savage
- Medical University of South Carolina, Charleston, South Carolina; American Urological Association; Professor and Vice Chairman of Urology
| | - Myles T Taffel
- New York University Langone Medical Center, New York, New York; Associate Section of Body Imaging
| | - Don C Yoo
- Rhode Island Hospital/The Warren Alpert Medical School of Brown University, Providence, Rhode Island; Commission on Nuclear Medicine and Molecular Imaging
| | - Erin W Delaney
- University of Alabama at Birmingham Medical Center, Birmingham, Alabama; Primary care physician
| | - Mark E Lockhart
- University of Alabama at Birmingham, Birmingham, Alabama; Chair UAB Department Appointments, Promotions, and Tenure Committee
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Kwok M, McGeorge S, Mayer‐Coverdale J, Graves B, Paterson DL, Harris PN, Esler R, Dowling C, Britton S, Roberts MJ. Guideline of guidelines: management of recurrent urinary tract infections in women. BJU Int 2022; 130 Suppl 3:11-22. [PMID: 35579121 PMCID: PMC9790742 DOI: 10.1111/bju.15756] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVE To compare recurrent urinary tract infection (rUTI) guidelines from major urological and non-urological organisations internationally and identify areas of consensus and discrepancy. METHODS PubMed, Google Scholar and the official webpages of major urological, gynaecological, infectious diseases and general practice organisations were searched for rUTI guidelines in March 2022. Nine guidelines were included for review: European Association of Urology, National Institute for Health and Care Excellence (NICE), Society of Obstetricians and Gynaecologists of Canada, American Academy of Family Physicians, Mexican College of Gynaecology and Obstetrics Specialists, Swiss Society of Gynaecology and Obstetrics, Spanish Society of Infectious Diseases and Clinical Microbiology, German Association of Scientific Medical Societies, and the combined American Urological Association/Canadian Urological Association/Society of Urodynamics, Female Pelvic Medicine and Urogenital Reconstruction. RESULTS The definition and evaluation of rUTIs, and antibiotic prophylaxis strategies, were mostly consistent across guidelines, and emphasised the importance of obtaining urine cultures and limiting cystoscopy and upper tract imaging in women without risk factors. Variable recommendations were noted for symptomatic treatment, self-initiated antibiotics, and antibiotic-sparing preventative strategies such as cranberry, vaginal oestrogen, immunoactive prophylaxis with OM-89, intravesical glycosaminoglycan instillation, and phytotherapeutics. Recent randomised evidence supports the use of methenamine hippurate. Either continuous or post-coital prophylactic antibiotics were supported by all guidelines. None of the guidelines were tailored to the management recurrent complicated UTI. CONCLUSION Multiple rUTI guidelines were identified and mostly limited their recommendations to otherwise healthy non-pregnant women with uncomplicated cystitis. Variation was noted, particularly in antibiotic-sparing preventative strategies. Some conflicting recommendations are due to more recent guidelines including updated evidence. Future guidelines should consider recommendations to assist management of complex patient groups, such as recurrent complicated UTI.
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Affiliation(s)
- Michael Kwok
- Department of UrologyRoyal Brisbane and Women's HospitalBrisbaneQldAustralia,Faculty of MedicineUniversity of QueenslandBrisbaneQldAustralia,Department of UrologyRedcliffe HospitalRedcliffeQldAustralia
| | - Stephen McGeorge
- Department of UrologyRoyal Brisbane and Women's HospitalBrisbaneQldAustralia,Faculty of MedicineUniversity of QueenslandBrisbaneQldAustralia
| | | | | | - David L. Paterson
- Department of Infectious DiseasesRoyal Brisbane and Women’s HospitalBrisbaneQldAustralia,Faculty of MedicineUniversity of Queensland Centre for Clinical ResearchBrisbaneQldAustralia
| | - Patrick N.A. Harris
- Faculty of MedicineUniversity of Queensland Centre for Clinical ResearchBrisbaneQldAustralia,Central LaboratoryPathology QueenslandBrisbaneQldAustralia
| | - Rachel Esler
- Department of UrologyRoyal Brisbane and Women's HospitalBrisbaneQldAustralia,Faculty of MedicineUniversity of QueenslandBrisbaneQldAustralia
| | | | - Sumudu Britton
- Department of Infectious DiseasesRoyal Brisbane and Women’s HospitalBrisbaneQldAustralia,Infection and Inflammation ProgramQIMR Berghofer Medical Research InstituteHerstonQldAustralia
| | - Matthew J. Roberts
- Department of UrologyRoyal Brisbane and Women's HospitalBrisbaneQldAustralia,Department of UrologyRedcliffe HospitalRedcliffeQldAustralia,Faculty of MedicineUniversity of Queensland Centre for Clinical ResearchBrisbaneQldAustralia
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Systematic analysis of the test design and performance of AI/ML-based medical devices approved for triage/detection/diagnosis in the USA and Japan. Sci Rep 2022; 12:16874. [PMID: 36207474 PMCID: PMC9542463 DOI: 10.1038/s41598-022-21426-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 09/27/2022] [Indexed: 11/08/2022] Open
Abstract
The development of computer-aided detection (CAD) using artificial intelligence (AI) and machine learning (ML) is rapidly evolving. Submission of AI/ML-based CAD devices for regulatory approval requires information about clinical trial design and performance criteria, but the requirements vary between countries. This study compares the requirements for AI/ML-based CAD devices approved by the US Food and Drug Administration (FDA) and the Pharmaceuticals and Medical Devices Agency (PMDA) in Japan. A list of 45 FDA-approved and 12 PMDA-approved AI/ML-based CAD devices was compiled. In the USA, devices classified as computer-aided simple triage were approved based on standalone software testing, whereas devices classified as computer-aided detection/diagnosis were approved based on reader study testing. In Japan, however, there was no clear distinction between evaluation methods according to the category. In the USA, a prospective randomized controlled trial was conducted for AI/ML-based CAD devices used for the detection of colorectal polyps, whereas in Japan, such devices were approved based on standalone software testing. This study indicated that the different viewpoints of AI/ML-based CAD in the two countries influenced the selection of different evaluation methods. This study’s findings may be useful for defining a unified global development and approval standard for AI/ML-based CAD.
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CT-urography: a nationwide survey by the Italian Board of Urogenital Radiology. Radiol Med 2022; 127:577-588. [PMID: 35381905 DOI: 10.1007/s11547-022-01488-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 03/23/2022] [Indexed: 10/18/2022]
Abstract
Computed tomography-urography is currently the imaging modality of choice for the assessment of the whole urinary tract, giving the possibility to detect and characterize benign and malignant conditions. In particular, computed tomography-urography takes advantage from an improved visualization of the urinary collecting system due to acquisition of delayed scan obtained after excretion of intravenous contrast medium from the kidneys. Nevertheless, the remaining scans are of great help for identification, characterization, and staging of urological tumors. Considering the high number of diseases, urinary segment potentially involved and patients' features, scanning protocols of computed tomography-urography largely vary from one clinical case to another as well as selection and previous preparation of the patient. According to the supramentioned considerations, radiation exposure is also of particular concern. Italian radiologists were asked to express their opinions about computed tomography-urography performance and about its role in their daily practice through an online survey. This paper collects and summarizes the results.
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