Latent melioidosis activation presenting with urinary tract infection and bacteremia.

We report a rare case of latent melioidosis activation in a patient with a distant travel history to an endemic region. Melioidosis is an infection caused by Burkholderia pseudomallei which is highly endemic in Southeast Asia and northern Australia. The patient exhibited common clinical risk factors, presenting with urinary tract infection and bacteremia. The treatment course was complicated by the adverse effect of trimethoprim/sulfamethoxazole. This case underscores the importance of early detection and appropriate treatment of melioidosis, particularly given its expanding global distribution.

Retraction: Epiploic Appendagitis Clinically Masquerading as an Acute Diverticulitis.

[This retracts the article DOI: 10.7759/cureus.20188.].

External Validation of Obese/Critically Ill Vancomycin Population Pharmacokinetic Models in Critically Ill Patients Who Are Obese.

Obesity combined with critical illness might increase the risk of acquiring infections and hence mortality. In this patient population the pharmacokinetics of antimicrobials vary significantly, making antimicrobial dosing challenging. The objective of this study was to assess the predictive performance of published population pharmacokinetic models of vancomycin in patients who are critically ill or obese for a cohort of critically ill patients who are obese. This was a multi-center retrospective study conducted at 2 hospitals. Adult patients with a body mass index of ≥30 kg/m2 were included. PubMed was searched for published population pharmacokinetic studies in patients who were critically ill or obese. External validation was performed using Monolix software. A total of 4 models were identified in patients who were obese and 5 models were identified in patients who were critically ill. In total, 138 patients who were critically ill and obese were included, and the most accurate models for these patients were the Goti and Roberts models. In our analysis, models in patients who were critically ill outperformed models in patients who were obese. When looking at the most accurate models, both the Goti and the Roberts models had patient characteristics similar to ours in terms of age and creatinine clearance. This indicates that when selecting the proper model to apply in practice, it is important to account for all relevant variables, besides obesity.

SARS-CoV-2 spike gene Sanger sequencing methodology to identify variants of concern.

The global demand for rapid identification of circulating SARS-CoV-2 variants of concern has led to a shortage of commercial kits. Therefore, this study aimed to develop and validate a rapid, cost-efficient genome sequencing protocol to identify circulating SARS-CoV-2 (variants of concern). Sets of primers flanking the SARS-CoV-2 spike gene were designed, verified and then validated using 282 nasopharyngeal positive samples for SARS-CoV-2. Protocol specificity was confirmed by comparing these results with SARS-CoV-2 whole-genome sequencing of the same samples. Out of 282 samples, 123 contained the alpha variant, 78 beta and 13 delta, which were indicted using in-house primers and next-generation sequencing; the numbers of variants found were 100% identical to the reference genome. This protocol is easily adaptable for detection of emerging variants during the pandemic.

Retropharyngeal Emphysema Following Local Palate Trauma.

Retropharyngeal emphysema (RPE) is a condition that occurs when air is trapped in the retropharyngeal space. It is a rare condition that is either spontaneous or secondary to various etiologies. A case of a three-year-old patient with retropharyngeal emphysema secondary to local palate trauma was presented to King Fahd Hospital of the University. The patient was further investigated by flexible nasopharyngoscopy; however, it showed no additional complications. The patient was admitted to the hospital and managed conservatively with analgesia and antibiotics. Lateral neck X-ray showed complete resolution of retropharyngeal emphysema a few days after admission. The patient was discharged on oral antibiotics and a follow-up after one week was arranged. Upon follow-up, the patient's condition improved with no further complications.

Portable RT-PCR System: a Rapid and Scalable Diagnostic Tool for COVID-19 Testing.

Combating the ongoing coronavirus disease 2019 (COVID-19) pandemic demands accurate, rapid, and point-of-care testing with fast results to triage cases for isolation and treatment. The current testing relies on reverse transcriptase PCR (RT-PCR), which is routinely performed in well-equipped laboratories by trained professionals at specific locations. However, during busy periods, high numbers of samples queued for testing can delay the test results, impacting efforts to reduce the infection risk. Besides, the absence of well-established laboratories at remote sites and low-resourced environments can contribute to a silent spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). These reasons compel the need to accommodate point-of-care testing for COVID-19 that meets the ASSURED criteria (affordable, sensitive, specific, user-friendly, rapid and robust, equipment-free, and deliverable). This study assessed the agreement and accuracy of the portable Biomeme SARS-CoV-2 system against the gold standard tests. Nasopharyngeal and nasal swabs were used. Of the 192 samples tested using the Biomeme SARS-CoV-2 system, the results from 189 samples (98.4%) were in agreement with the reference standard-of-care RT-PCR testing for SARS-CoV-2. The portable system generated simultaneous results for nine samples in 80 min with high positive and negative percent agreements of 99.0% and 97.8%, respectively. We performed separate testing in a sealed glove box, offering complete biosafety containment. Thus, the Biomeme SARS-CoV-2 system can help decentralize COVID-19 testing and offer rapid test results for patients in remote and low-resourced settings.

Epiploic Appendagitis Clinically Masquerading as an Acute Diverticulitis.

Acute diverticulitis is a prevalent surgical condition that typically presents with lower abdominal pain and tenderness. However, the clinical and laboratory findings of diverticulitis are non-specific and other conditions may give similar manifestations. We present the case of a middle-aged woman with a left lower quadrant abdominal pain and fever of three days duration. On examination, she had tachycardia and localized tenderness in the left iliac fossa with rebound tenderness. There were no signs of peritonitis, including the rigid abdomen and decreased bowel sounds. The laboratory findings were suggestive of an inflammatory or infectious process. A computed tomography scan of the abdomen demonstrated a fat-density lesion anterior to the descending colon representing epiploic appendagitis. The patient was managed conservatively with non-steroidal anti-inflammatory drugs (lornoxicam 8 mg). The patient experienced gradual improvement and was discharged after four days of hospitalization. No surgical intervention was needed. The case highlighted the importance of considering epiploic appendagitis in the differential diagnosis of acute diverticulitis. An accurate diagnosis will prevent the patient from having unnecessary surgeries as conservative management is often sufficient in patients with epiploic appendagitis.

Multidrug-resistant Organisms in Hospitals: What Is on Patient Hands and in Their Rooms?

BACKGROUND: The impact of healthcare personnel hand contamination in multidrug-resistant organism (MDRO) transmission is important and well studied; however, the role of patient hand contamination needs to be characterized further. METHODS: Patients from 2 hospitals in southeast Michigan were recruited within 24 hours of arrival to their room and followed prospectively using microbial surveillance of nares, dominant hand, and 6 high-touch environmental surfaces. Sampling was performed on admission, days 3 and 7, and weekly until discharge. Paired samples of methicillin-resistant Staphylococcus aureus (MRSA) isolated from the patients' hand and room surfaces were evaluated for relatedness using pulsed-field gel electrophoresis and staphylococcal cassette chromosome mec, and Panton-Valentine leukocidin typing. RESULTS: A total of 399 patients (mean age, 60.8 years; 49% male) were enrolled and followed for 710 visits. Fourteen percent (n = 56/399) of patients were colonized with an MDRO at baseline; 10% (40/399) had an MDRO on their hands. Twenty-nine percent of rooms harbored an MDRO. Six percent (14/225 patients with at least 2 visits) newly acquired an MDRO on their hands during their stay. New MDRO acquisition in patients occurred at a rate of 24.6/1000 patient-days, and in rooms at a rate of 58.6/1000 patient-days. Typing demonstrated a high correlation between MRSA on patient hands and room surfaces. CONCLUSIONS: Our data suggest that patient hand contamination with MDROs is common and correlates with contamination on high-touch room surfaces. Patient hand hygiene protocols should be considered to reduce transmission of pathogens and healthcare-associated infections.

Leveraging Quality Improvement Science to Reduce C. difficile Infections in a Community Hospital.

BACKGROUND: The most common infection acquired in US hospitals is Clostridium difficile, which can lead to protracted diarrhea, severe abdominal cramping, and infectious colitis and an attributable mortality of 6.5%. The mortality associated with C. difficile is of major clinical importance. The best strategy to prevent such infections is an open question. METHODS: A multiyear quality improvement initiative was performed in our community hospital to determine where hospitals should focus their resources to achieve sustainable reductions in hospital-acquired C. difficile infection (CDI). Quality improvement methodology was used to evaluate the impact of sequential interventions in environmental cleaning, infection prevention, and antibiotic stewardship over time. RESULTS: After four years, hospital-acquired CDI declined 55.5%, from 12.2 to 5.4 cases/10,000 patient-days (Poisson rate test, p = 0.002). High-risk antibiotic use declined 88.1%, from 63.7 to 7.6 days on treatment/1,000 patient-days (Student's t-test, p < 0.001). The highest-impact intervention was stewardship on diagnostics and high-risk antibiotics using home-grown decision support tools. CONCLUSION: Translating scientific evidence into clinical practice using quality improvement methods led to sustained reductions in C. difficile transmission and identified high-risk antibiotics and diagnostics as key leverage points.

Altered mental status and fever.

West Nile virus (WNV) is still the most common cause of neuroinvasive arboviral disease in the USA with a case death of 10-30%. We are reporting a case of a 61-year-old woman with a history of Crohn's disease, fibromyalgia treated with chronic steroid therapy that presented with a day history of fever, confusion and lethargy. She had a lumbar puncture which was notable for lymphocytosis and was positive for WNV. She initially was treated with broad-spectrum antibiotics, which were subsequently discontinued when the diagnosis of WNV neuroinvasive disease (WNND) was made. A high index of suspicion is needed to diagnose WNND, and this should be suspected in elderly immunocompromised patient presenting with altered mental status and lumbar puncture suggestive of aseptic meningitis. Recent study has showed that there is genetic variation in the interferon response pathway which is associated with both risk for symptomatic WNV infection and disease progression.

Hyperuricemic renal failure in nonhematologic solid tumors: a case report and review of the literature.

Tumor lysis syndrome (TLS) is an oncologic emergency that is caused by massive tumor cell lysis. It is commonly associated with hematological cancers like leukemia and lymphoma and uncommonly with solid nonhematologic tumors as well. However, spontaneous tumor lysis syndrome (STLS) without any cytotoxic chemotherapy rarely occurs in solid tumors. We describe a case of STLS in a metastatic adenocarcinoma of unknown primary and review the literature of STLS in solid non-hematologic tumors to identify various risk factors for pathogenesis of this entity.

GFR at initiation of dialysis and mortality in CKD: a meta-analysis.

BACKGROUND: The proportion of patients with advanced chronic kidney disease (CKD) initiating dialysis therapy at a higher glomerular filtration rate (GFR) has increased during the past decade. Recent data suggest that higher GFR may be associated with increased mortality. STUDY DESIGN: A meta-analysis of cohort studies and trials. SETTING & POPULATION: Patients with advanced CKD. SELECTION CRITERIA FOR STUDIES: We performed a systematic literature search in MEDLINE, Cochrane Central Register of Controlled Trials, ClinicalTrials.gov, American Society of Nephrology abstracts, and bibliographies of retrieved articles to identify studies reporting on GFR at dialysis therapy initiation and mortality. PREDICTOR: Estimated or calculated GFR at dialysis therapy initiation. OUTCOME: Pooled adjusted hazard ratio (HR) of continuous GFR for all-cause mortality. RESULTS: 16 cohort studies and 1 randomized controlled trial were identified (n = 1,081,116). By meta-analysis restricted to 15 cohorts (n = 1,079,917), higher GFR at dialysis therapy initiation was associated with a higher pooled adjusted HR for all-cause mortality (1.04; 95% CI, 1.03-1.05; P < 0.001). However, there was significant heterogeneity (I(2) = 97%; P < 0.001). The association persisted among the 9 cohorts that adjusted analytically for nutritional covariates (HR, 1.03; 95% CI, 1.02-1.04; P < 0.001; residual I(2) = 97%). The highest mortality risk was observed in hemodialysis cohorts (HR, 1.05; 95% CI, 1.02-1.08; P < 0.001), whereas there was no association between GFR and mortality in peritoneal dialysis cohorts (HR, 1.04; 95% CI, 0.99-1.08, P = 0.1; residual I(2) = 98%). Finally, higher GFR was associated with a lower mortality risk in cohorts that calculated GFR (HR, 0.80; 95% CI, 0.71-0.91; P = 0.003), contrasting with a higher mortality risk in cohorts that estimated GFR (HR, 1.04; 95% CI, 1.03-1.05; P < 0.001; residual I(2) = 97%). LIMITATIONS: Paucity of randomized controlled trials, different methods for determining GFR, and substantial heterogeneity. CONCLUSIONS: Higher estimated rather than calculated GFR at dialysis therapy initiation is associated with a higher mortality risk in patients with advanced CKD, independent of nutritional status. Although there was substantial heterogeneity of effect size estimates across studies, this observation requires further study.