Profile and microbiological isolates of asymptomatic bacteriuria among pregnant women in Abakaliki, Nigeria

Urinary Tract Infections Spectrum During Pregnancy: Etiopathogenesis and Outcome

Background :The occurence of urinary tract infections (UTIs) in the course of a normal pregnancy should always be early diagnosed and treated, even asymptomatic as it could evolve to threatening pathological conditions, like sepsis with acute kidney injury, or preeclampsia. The aim of study was to establish a cartographic projection of the risk factors and etiopathogenesis of urinary tract infections diagnosed during pregnancy, with the purpose to control their severity and evaluate the therapeutic strategies used to reduce maternal and fetal risks.

Material and methods: The study included 175 patients, pregnant women, diagnosed with UTIs hospitalized in the Nephrology Clinic and Obstetrics-Gynecology Clinic of the Emergency Clinical County Hospital of Constanta, in an interval of time of 4 years, between 2017-2021.

Results: Out of the 247 patients recruited in our study, the distribution according to the trimester of pregnancy, there were : 72 pregnant women in the first trimester (41.14%), 35 in the second trimester (20.0%) and 68 in the third trimester (38.86%). The frequency of pregnant women who had other favorising conditions and detectable risk factors was 70.29%. The clinical manifestations of UTIs in our study group were distributed as follows : 36 (20.57%) asymptomatic bacteriuria, 56 (32.0%) acute cystitis, 44 (25.14%) recurrent lower urinary tract infections, and 39 (22.29%) acute pyelonephritis. There is an association (p ---lt--- 0.001) between the type of clinical form of UTIs and a certain trimester of pregnancy, for example the highest frequency of acute pyelonephritis (AP) was noticed in the third trimester of pregnancy (71.8%, 28/39). Out of 39 pregnant women with AP, 71.8% (28) had associated ureterohydronephrosis (UHN). E. Coli was present in 41.71% of pregnant women., followed by Klebsiella pneumoniae, Enterococcus faecalis and, less frequently, Staphylococcus aureus and Proteus mirabilis. The most frequently used antibiotics in pregnancy were: 2nd and 3rd generations of cephalosporins (42.29%), followed by ampicillin (34.29%); less used were amoxicillin with clavulanic acid (10.29%), quinolones (6.29%) and nitrofurantoin (6.86%). Most of the pregnant women (94.28%, 165/175) had remission of fever within 24-48 h of using appropriate antibiotic therapy. The recurrence rate was 22.28 %, (39/175).

Conclusion All clinical forms of UTIs could be present during pregnancy, but the most common are lower urinary tract infections and the most involved germ is E. Coli. UHN is a factor that influences the occurence of UTIs, being the most common favorising condition.

Urinary Bacterial Profile and Antibiotic Susceptibility in Pregnant Adolescents and Pregnant Low Obstetric Risk Adult Women

Introduction

Significant bacteriuria is associated with clinical and obstetric complications. The existing studies on the profile of urinary pathogens in pregnant women have widely divergent results and they hardly include data on pregnant adolescents.

Methods

This observational retrospective study was conducted in a tertiary hospital in the city of São Paulo with 388 pregnant adolescents and 2547 pregnant low-risk obstetric care adults who began prenatal care between January 2010 and January 2016. They were compared in terms of urine sediment, urine culture, and antibiogram results.

Results

The prevalence of bacteriuria was 17.01% (66/388) among adolescents and 10.13% (258/2547) among adults. Adolescence was a risk factor for bacteriuria in pregnancy (OR=1.82, CI95%=1.35–2.44, p=0.08). The most frequently isolated pathogen in urine culture was Escherichia coli, both in adolescents (49%) and in adults (42.18%). In positive urine cultures, urinary leukocytes were present in greater numbers in adolescents than in adults (p<0.001). Resistance to quinolones in general was more frequent among adults (OR=5.86, CI95%=0.78–44.20, p<0.001), but the tendency was not statistically significant.

Conclusion

Escherichia coli and the less frequent Streptococcus agalactiae were the etiologic agents most often found in the urine cultures both of adolescents and adults. Higher rates of bacteriuria and of abnormal urine sediments prevailed among adolescents.

Asymptomatic Bacteriuria among Pregnant Women in Addis Ababa, Ethiopia: Prevalence, Causal Agents, and Their Antimicrobial Susceptibility

Asymptomatic bacteriuria (ASBU) is an important health problem among pregnant women, particularly in low-income countries. This study aimed to estimate the prevalence of ASBU and potential risk factors among pregnant women attending antenatal care centers in Addis Ababa. It also aimed to identify causal bacterial pathogens and to assess their antimicrobial susceptibility. A health facility-based cross-sectional study was conducted from March to June 2019. Urine samples from a total of 281 pregnant women with no symptoms of urinary tract infection were tested for ASBU. Women whose urine samples carried greater than or equal to 10⁵ colony-forming units (CFU) of bacteria per milliliter of urine when grown on plate count agar were considered positive for ASBU. Bacterial pathogens were isolated from urine samples of women with ASBU using standard microbiological techniques. Antimicrobial susceptibility of isolates was investigated using the Kirby–Bauer disk diffusion method on Muller–Hinton agar plates. Of 281 pregnant women examined, 44 (15.7%) were positive for ASBU. Logistic regression analysis of the putative risk factors tested in the current study showed that none of them were significantly associated with the occurrence of ASBU (p > 0.05). The most frequently isolated bacterial species were Escherichia coli 17 (30.2%), Proteus 13 (23.2%), and Enterococcus 11 (19.6%). All of the E. coli, Citrobacter, and Klebsiella isolates and 84.6% of Proteus were resistant to ampicillin. All bacterial isolates were resistant to at least one of the antimicrobials tested. Resistance to three or more antimicrobials was detected in 15 (88.2%) of E. coli, 13 (100%) of Proteus, and 8 (72.7%) of Enterococcus isolates. Resistance to as many as 7 antimicrobials among E. coli, 8 antimicrobials among Proteus, and 7 antimicrobials among Enterococcus isolates was recorded. Detection of ASBU in a substantial number of pregnant women in this study warrants the need for a detailed study on possible risks of developing symptomatic urinary tract infection (UTI) and associated complications. Multidrug resistance to several antimicrobials was observed in the majority of bacterial isolates. Regular assessment of antimicrobial susceptibility of uropathogens to commonly prescribed antimicrobials and implementation of prudent use of antimicrobials are recommended.

Bacterial Profile and asymptomatic bacteriuria among pregnant women in Africa: A systematic review and meta analysis

BACKGROUND

Different physiologic changes that occur during pregnancy, such as Hydroureter, dilatation of the renal pelvis, glycosuria and aminoaciduria, and low urine production predispose pregnant women for ascending urinary tract infection. Globally, 2% to 15% of the pregnant women have urinary tract infection without specific symptoms. Therefore, this study aimed to estimate the prevalence of asymptomatic bacteriuria (ABU) in pregnant women in Africa.

METHODS

Systematic search of published studies done on PubMed, EMBASE, Web of Science, SCOPUS, PsychInfo, CINAHL, and google scholar for gray literature. All published observational studies until October 30, 2020 were included. This meta-analysis follows the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Quality of studies was assessed by modified Newcastle-Ottawa Scale (NOS). Meta-analysis was carried out using a random-effects method with the double arcsine transformation approach using the STATA™ Version 14 software. Trim and fill analysis was done to correct presence of significant publication bias. The study protocol is prospectively registered on PROSPERO, registration number CRD42020212601.

FINDINGS

From 3393 obtained studies, 48 studies from 12 African countries involving 15, 664 pregnant women included in this Meta-analysis. The overall pooled prevalence of asymptomatic bacteriuria among pregnant women in Africa after correction for publication bias by trim and fill analysis was found to be 11.1% (95% CI: 7.8, 14.4). The most common bacterial isolates involved in the etiology of ABU was Escherichia coli with pooled prevalence 33.4% (95% CI: 27.3 - 39.4).

INTERPRETATION

Asymptomatic bacteriuria is substantial among pregnant women in Africa. Therefore, all pregnant women should be tested for the presence of asymptomatic bacteriuria. A screening program must be based not only on the incidence but also on a cost-efficacy evaluation and a microbiological evaluation.

FUNDING

There was no funding source for this study.

The etiology and prevalence of urinary tract infection and asymptomatic bacteriuria in pregnant women in Iran: a systematic review and Meta-analysis

BACKGROUND

Urinary tract infection (UTI) is a common clinical problem in pregnant women. Bacteriuria in pregnancy without antibiotic treatment could result in complications. This study aims to investigate the etiology and prevalence of UTI and asymptomatic bacteriuria (ASB) in pregnant women in Iran.

METHOD

This meta-analysis follows the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. To avoid bias, all steps of the study were carried out independently by two researchers. We conducted a comprehensive search on all the related literature in national databases, including IranDoc, SID, Barakat Knowledge Network System, RICST, Magiran, Iranian National Library and international databases, including Scopus, Embase, Science Direct, PubMed/ Medline, Cochrane Library, Web of Sciences, EBSCO, as well as Google Scholar search engine until June 2018. After considering the inclusion/exclusion criteria and qualitative evaluation, studies were analyzed based on random effects model using Comprehensive Meta-Analysis Software Version 2.

RESULTS

In 31 studies with a sample size of 20,309, the prevalence of ASB in pregnant Iranian women was estimated to be 8.7% (95%CI: 7.2-10.4). The lowest and highest prevalence of ASB were observed in the third trimester (6.1% [95%CI: 2.1-16.4]) and first trimester (11.7% [95%CI: 7.9-16.9]), respectively. Subgroup analysis of the prevalence of ASB based on geographical region (P = 0.002) and province (P <  0.001) was significant but for the quality of studies (P = 0.51) was not significant. In 17 studies including 48,731 pregnant women, the prevalence of UTI was estimated to be 9.8% (95%CI: 7.6-12.5). The test for subgroup differences of prevalence of UTI for province (P <  0.001) was significant but for geographical region (P = 061) and quality of studies (P = 0.11) was not significant. Meta-regression model for the prevalence of UTI and ASB in pregnant women in Iran based on year of the studies was significant (P <  0.001). The most common microorganism involved in the etiology of UTI (61.6% [95%CI: 51.6-70.7]) and ASB (63.22% [95%CI: 51.2-73.8]) was E. coli.

CONCLUSION

UTI and ASB are prevalent in pregnant women in Iran. Therefore, UTI screening is essential in pregnant women. The most common microorganism involved in the etiology of UTI and ASB in pregnant women in Iran is E.coli.

Clinical presentation, risk factors and pathogens involved in bacteriuria of pregnant women attending antenatal clinic of 3 hospitals in a developing country: a cross sectional analytic study

Background

Pregnancy increases the risk of recurrent bacteriuria and acute pyelonephritis which is associated with significant maternal and fetal risks. The prevalence of bacteriuria varies worldwide. Clinical diagnosis is challenging since it is usually mistaken for normal physiological changes during pregnancy. This study aims to determine the prevalence, clinical presentation, risk factors and microorganism responsible for bacteriuria in pregnant women of Douala city, Cameroun.

Methods

A cross-sectional study was conducted in 3 hospitals of Douala from January to April 2015. We consecutively recruited all consented pregnant women aged 18 years and above attending antenatal clinics. Socio-demographic characteristics, medical and obstetrical past history, clinical signs and obstetric characteristics of the index pregnancy were collected. Thereafter, urine were collected aseptically and subjected to routine macroscopy, microscopy examination and culture. The culture was obtained by inoculation of 10 μl of urine on the appropriate medium. Identification of pathogens was done automatically using the VITEK2™ (BioMérieux- France). Data were processed using the Statistical Package for the Social Sciences (SPSS) 18. Statistics were descriptive and analytic; Odds ratios were calculated. Associations between variables and bacteriuria were conducted using the Chi squared test and the fisher exact probability. Associations with p-values < 0.05 were considered statistically significant.

Results

Overall, 354 pregnant women were enrolled with mean of age 28.18 ± 4.4. The prevalence of significant bacteriuria was 9.9% (35 out of 354). The prevalence of bacteriuria in women who were asymptomatic was 5.7%. Cystitis and pyelo-nephritis were observed in 3.6 and 0.6% respectively. The most commonly isolated organism was Escherichia coli (E. coli): 48.6%. History of Urinary Tract Infection (UTI) (p = 0.035, OR = 2.183, CI = 1.055–4.518) was significantly associated with bacteriuria. High level of education was protective.

Conclusions

Bacteriuria was frequent in pregnant women and significantly increased with the past history of UTI and low level of education. Asymptomatic bacteriuria was more common. E coli was the most frequent uropathogen. Education and proper treatment of UTI should be provided to reduce the burden of this pathology in order to prevent its severe complications.

Asymptomatic bacteriuria and antimicrobial susceptibility pattern of the isolates among pregnant women attending Dessie referral hospital, Northeast Ethiopia: A hospital-based cross-sectional study

OBJECTIVE

The aim of the current study was to find out the prevalence of asymptomatic bacteriuria, antimicrobial susceptibility pattern of the isolates and related risk factors among pregnant women.

MATERIAL AND METHODS

A hospital-based cross-sectional study was carried out from February 2017 to May 2017 among asymptomatic pregnant mothers attending Dessie Referral Hospital, Northeast Ethiopia. About 10-15 mL of freshly voided midstream urine samples were collected from each study participants, and analyzed at Dessie regional research microbiology laboratory with conventional antibiotic susceptibility, and biochemical tests. Isolates were tested against commonly used antimicrobials using Kirby Bauer disc diffusion method. Data were analyzed by SPSS version 20 software and in all cases, p-values below 0.05 was considered as statistically significant.

RESULTS

Overall, 358 pregnant women were included in the study with a mean age of 26.5±4.6 years (range, 19-43 yrs). The overall prevalence of asymptomatic bacteriuria was 56% (15.6%). Isolated microorganisms were mainly Escherichia coli and Staphylococcus aureus (for each, n=18; 31%). Escherichia coli and Staphylococcus aureus were resistant to ampicillin (66.7%), and penicillin (94.44%). The prevalence of multidrug- resistant isolates was 72.4%. History of catheterization [AOR=2.28, 95% CI=(1.03-5.06)] and anemia [AOR=4.98, 95% CI=(2.395-10.34) were statistically significant regarding the prevalence of asymptomatic bacteriuria.

CONCLUSION

The overall prevalence of asymptomatic bacteriuria among pregnant women in the study area was high. The presence of asymptomatic bacteriuria and their antibiotic susceptibility test results should be taken into consideration during the management of pregnant women who are visiting antenatal care clinic.

Prevalence, aetiology and antibiotic sensitivity profile of asymptomatic bacteriuria isolates from pregnant women in selected antenatal clinic from Nairobi, Kenya

INTRODUCTION

Asymptomatic bacteriuria (ASB) is the presence of bacteria in urine without apparent symptoms of urinary tract infections. The importance of asymptomatic bacteriuria lies in the insight it provides into symptomatic infections. To determine prevalence, bacterial isolates and Antibiotic Sensitivity Profile of asymptomatic bacterial urinary tract infection in pregnant women in selected clinics in Nairobi.

METHODS

This was a cross-sectional study involving women attending antenatal clinic at selected clinics of Nairobi County. The women who met the inclusion criteria were included in the study. The midstream urine samples of these women were subjected to microscopy, culture and sensitivity.

RESULTS

A total of 1020 of women on their first antenatal clinic visit participated in the study; 219 of them had ASB, giving a prevalence of 21.5 % at 95% confidence level. Escherichia coli were the common organism isolated at 38.8%. The majority of the organisms were sensitive to imipenem and gentamycin.

CONCLUSION

There is a high prevalence of ASB among pregnant women included in the study from the Nairobi county clinics. Therefore, routine ASB screening of pregnant women is recommended among the women attending antennal clinics in Nairobi county clinics.