BMC research notes
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To assess computed tomography pulmonary angiography (CTPA) positive yield rate for pulmonary embolism (PE) in a Canadian academic tertiary center. ⋯ This one-center retrospective cross-sectional study includes from 5565 (model 1) to 5296 (model 2) patients that were evaluated for suspected PE in 2015, among which 1331 (23.9% (model 1) to 25.1% (model 2)) underwent CTPA. Mean age of CTPA patients was 60.2 ± 16.6 years, of which 575 were males (43.2%). Two hundred eleven CTPA examinations were positive for PE, giving a CTPA positive yield rate of 15.9% (95% CI (13.93-17.87)). One hundred and thirteen (8.1%) CTPA were considered indeterminate, and eleven were considered nondiagnostic (0.8%). Among the 211 CTPA positive for PE, 67 (32%) were proximal emboli, 98 (47%) were segmental emboli and 44 (21%%) were subsegmental emboli. In conclusion, in this retrospective study done in a Canadian academic tertiary center, we report a positive rate of 15.9% for PE detection with CTPA, which is above the generally accepted lower threshold of 10% for the yield of CTPA.
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Cesarean section (CS) is one of the most common surgical procedures in the world. In developed and developing countries, CS has grown significantly over the past decades. The Iranian Ministry of Health and Medical Education has developed a health transformation plan (HTP) in order to reduce CS rate and promote vaginal delivery. This study was conducted with the aim of reviewing the results of published studies on the impact of the HTP on CS in Iran. ⋯ We searched Embase, PubMed/MEDLINE, ISI/Web of Sciences, Scopus, as well as Iranian databases (MagIran, SID and Barakatkns), from May 2014 to October 2018. To assess the quality of studies, the checklist "A Cochrane Risk of Bias Assessment Tool: for Non-Randomized Studies of Interventions" was utilized. Twelve studies were selected. Seven studies reported statistically significant results, showing a positive impact of the implementation of the HTP on CS reduction. Despite the decreased CS rate in Iran after about 4 years of the implementation of this policy, the goal of a yearly reduction by 10% has not been achieved yet. Increasing access to maternity services and community-based education through mass media could help changing the attitudes of Iranian mothers towards CS.
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Following publication of the original article [1], the authors reported that one of the authors' names was spelled incorrectly. In this Correction the incorrect and correct author name are shown. The original publication of this article has been corrected.
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The present study aimed to determine the prevalence of virulence factors and antimicrobial resistance profile of Pseudomonas aeruginosa strains isolated from Iranian burn patients. ⋯ This cross-sectional study performed on 100 P. aeruginosa isolates which were recovered from burn wound specimens in 2014-2015. All presumptive isolates were identified by standard microbiologic tests. Antimicrobial susceptibility test was carried out by disk diffusion method. The presence of virulence genes was determined by PCR method. Antibiotic susceptibility results revealed that the isolates were mostly susceptible to amikacin (61%), ceftazidime (60%), and imipenem (55%). Moreover, 59% of the isolates were multi-drug resistance (MDR). The most prevalent MDR pattern was aminoglycosides-penicillins-fluoroquinolones-carbapenems (15%). The presence of exoT, exoY, exoS and exoU genes was detected in 100%, 100%, 59%, and 41% of the tested isolates, respectively. Results points out the pattern of MDR and genetic diversity of type III secretion system among P. aeruginosa strains isolated from the burn population. Overall, the association of MDR and the presence of the specific virulence genes can be a predictive marker for the persistence of these isolates in the hospitals and subsequently a worse clinical condition for the affected patients.