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Case Presentation: A 68 year old man. Hospitalized with decreased consciousness. Experienced severe shortness of breath 3 days before entering the hospital. The patient also had wounds on his right and left legs since 1 month ago. But then became more widespread. The patient has kidney failure and routinely undergoes hemodialysis. The patient had diabetes since 6 years ago. Laboratory: Hemoglobin 7.5 Leukocytes 17.8 Netrophils 91.70 Lymphocytes 4.20 Albumin 2.2 Creatinine 2.5 Ureum 61 Artery 2.30, urine bacteria+++. Pus culture results: Enterobacter cloacae with the antibiotic meropenem. Sputum culture results Klebsiella pneumoniae ss. Pneumoniae with amikacin. After 1 week pus culture results: Pseudomonas aeruginosa with amikacin. Blood culture results: Staphylococcus epidermidis suggested vancomycin. The patient underwent debriment in the operating room. However, the condition did not improve. Discussion: This patient experienced sepsis with MDRO. Apart from geriatric age, the patient also has diabetes with complications of kidney failure. This worsens the patient’s immune system. So the patient’s diabetic ulcers and decubitus ulcers worsened with the results of cultures with various antibiotic-resistant multiorganisms. And also the respiratory infections increase the risk of mortality. Conclusion : MDRO is a risk factor for inappropriate antibiotic therapy, which is undoubtedly associated with increased mortality.
Community-acquired bacterial pneumonia (CABP) contributes significantly to mortality and healthcare costs worldwide. The use of guideline-concordant antibiotic therapy for CABP is associated with improved outcomes.
Methods:
This was a retrospective cohort study of inpatients with CABP due to MRSA or P. aeruginosa in the All of Us database. The proportion of patients on guideline-concordant antibiotics or guideline-discordant antibiotics was compared within groups based upon patient age, sex, self-reported race, ethnicity, marital status, alcohol use, and tobacco use. Guideline concordance was determined using the 2019 IDSA/ATS CABP guidelines. Associations were further analyzed using multivariate logistic regression.
Results:
A total of 336 patients with CABP due to MRSA (152) or P. aeruginosa (184) were included. Guideline-concordant antibiotic therapy was prescribed to 70% of CABP-MRSA patients and for 57% of CABP-P. aeruginosa patients. Independently predictive factors of guideline-concordant antibiotic prescribing for CABP-P. aeruginosa patients were Non-Hispanic Black (NHB) vs. Non-Hispanic White (NHW) race (odds ratio = 0.30, 95% confidence interval = 0.12 – 0.75).
Conclusion:
In the All of Us database, the majority of CABP-MRSA and CABP-P. aeruginosa patients were prescribed guideline-concordant antibiotic therapy. Race was independently predictive of guideline-concordant antibiotic therapy for patients with CABP-P. aeruginosa, but not CABP-MRSA. NHB patients were less likely to receive guideline-concordant antibiotic therapy than NHW patients when treated for CABP-P. aeruginosa.
Interventions based on testing and communication training have been developed to reduce antibiotic prescribing in primary healthcare (PHC) for the treatment of acute lower respiratory infections (ALRTIs). However, research based on the experiences of PHC clinicians participating in ALTRIs interventions to reduce antibiotic prescribing in Barcelona is scanty.
Aim:
This study aimed to explore the perceptions and experiences of clinicians (physicians and nurses) on an intervention to reduce antibiotic prescription in PHC in Barcelona (Spain). This intervention was a randomised controlled study (cRCT) based on three arms: 1) use of a C-reactive protein (CRP) rapid test; 2) enhanced communication skills; and 3) combination of CRP rapid test and enhanced communication skills. In addition, the study aimed to explore the impact of COVID-19 on the detection of ALRTIs.
Methods:
This qualitative study used a socio-constructivist perspective. Sampling was purposive. Participants were selected based on age, sex, profession, intervention trial arm in which they participated, and the socioeconomic area of the PHC where they worked. They were recruited through the healthcare centres participating in the study. Nine participants (7 women and 2 men) participated in two focus groups, lasting 65–66 min, in September–October 2022. Framework analysis was used to analyse the data.
Findings:
Three themes were identified: ‘(The intervention) gave us reassurance’: intervention experiences among health professionals. This theme includes accounts of clinicians’ satisfaction with the intervention, particularly with CRP testing to support clinical diagnoses; ‘We don’t have time in primary healthcare’: structural and community resources in healthcare services. This theme encompasses clinicians’ experiences on healthcare pressures and PHC organisational structures barriers to PHC interventions; and ‘I only did three CRP’: impact of COVID-19 pandemic on the intervention. The last theme focuses on the impact of the COVID-19 pandemic on the intervention’s implementation.
Conclusions:
CPR testing and promoting communication skills can be useful tools to support clinical decisions for ALRTIs. Structural barriers (e.g., healthcare pressures) and social inequities amongst service users were acknowledged as the main barriers for the implementation of ALRTIs interventions.
Use of clinical grading systems may be used to help determine the disposition (including to the observation unit [OU]) of the emergency department patient with community acquired pneumonia. Generally parenteral antibiotic treatment should be initiated in the emergency department and continued in the OU with transition to the outpatient regime at the time of discharge.
Many patients with skin and soft tissue infections (SSTIs) are ideal candidates for management in an observation unit (OU). More severe SSTIs including necrotizing fasciitis or extensive cellulitis with septicemia require inpatient management. OU care can be a cost-effective option for patients who may only require a day or two of intravenous antibiotics to assure sufficient response while monitoring for clinical progression to more serious conditions. It may be a useful venue to establish a definitive diagnosis in patients who may have been initially misdiagnosed (pseudocellulitis).
The use of antibiotics in fish and shrimp aquaculture all over the world was found to be only partially successful in preventing infectious diseases. However, their overuse has resulted in the contamination of closed aquatic ecosystems, reduced antibiotic resistance in organisms that fight infectious diseases, and compromised the effectiveness of various antibiotic medications in controlling diseases. Excessive use of antibiotics damages aquaculture species and impacts human health, also rendering the most potent antibiotics increasingly ineffective, with limited alternatives. Therefore, intensive research efforts have been made to replace antibiotics with other protocols and methods like vaccines, phage therapy, quorum quenching technology, probiotics, prebiotics, chicken egg yolk antibody (IgY), and plant therapy,” etc. Though all these methods have great potential, many of them are still in the experimental stage, except for fish vaccines. All these alternative technologies need to be carefully standardized and evaluated before implementation. In recent times, after realizing the importance of the gut microbiome community in maintaining the health of animals, efforts have been made to use the microbiome strains for the prevention of pathogenic bacterial and viral infections. Now it has been experimentally proven that animals should possess a healthy microbiome community in their gut tract to strengthen the immune system and prevent the entry of harmful pathogens. Investigations are now being carried out on the derivation of various bioactive compounds from the gut microbiome strains and their structural profile and functionality using the molecular tools of metagenomics and bioinformatics. Such newly discovered compounds from microbiomes can be used as potential alternatives to replace antibiotic drugs in the aquaculture industry. These alternatives are likely to emerge as breakthroughs in animal health management and farming, with effects on cost efficiency, species health, productivity, and yield enhancement. Therefore, introducing new micro-innovative technologies into an overall health management plan will be highly beneficial.
Intraamniotic infection (IAI) is a serious infection that complicates up to 13% of term labor. Definitive diagnosis of IAI requires the presence of both microbial infection and inflammatory markers such as neutrophils and cytokines in the amniotic cavity. Current microbiologic and diagnostic tests for inflammation take hours to days to return and, therefore, clinicians must rely on clinical signs to determine the need for treatment. Suspected IAI or “clinical chorioamnionitis” is defined as unexplained maternal fever (>38°C or 100.4°F) with one or more of the following symptoms or signs: 1) uterine tenderness and irritability; 2) leukocytosis; 3) fetal tachycardia; 4) maternal tachycardia; or 5) malodorous vaginal discharge. It is associated with significant morbidity for both the mother and neonate. Maternal complications include protracted labor, uterine atony, postpartum hemorrhage, wound infection, sepsis, and intensive care admission. Neonatal morbidity includes an increased risk for neonatal intensive care admission, pneumonia, meningitis, sepsis, and death. Prompt identification and treatment of intraamniotic infection with broad-spectrum antibiotics may decrease the morbidity associated with this infection. It is not an indication for immediate cesarean delivery, and standard obstetric guidelines should be followed to determine delivery route.
Surveillance of antimicrobial consumption (AMC) is essential to anticipate and inform policies and public health decisions to prevent and/or contain antimicrobial resistance (AMR). This manuscript shares the experience on AMC data collection in Latin American & Caribbean (LAC). The WHO GLASS-AMC methodology for AMC surveillance was used for data registration during the period 2019–2022. Focal points belonging to each country were contacted and trained for AMC source of information detection, managing registration tools, and data analysis. Thirteen countries were enrolled with significant heterogeneity in the AMC results (range 2.55–36.26 DID-AMC). This experience reflects the heterogeneity of realities in LAC countries; how each one of the nations selected the best sources to collect AMC data, which were the main problems in applying the WHO-AMC collection tool, and the approach that each country gave to the analysis of its data. Finally, some examples are provided on the use of AMC information in making the best decision-making related to AMR control policies at the national level.
Introduces the physical action of antibiotics and antiseptics including penetration through biofilms, persister cells, surface activity, physical sterilization and antibiofilm molecules.
The prenatal and early-life periods pose a crucial neurodevelopmental window whereby disruptions to the intestinal microbiota and the developing brain may have adverse impacts. As antibiotics affect the human intestinal microbiome, it follows that early-life antibiotic exposure may be associated with later-life psychiatric or neurocognitive outcomes.
Aims
To explore the association between early-life (in utero and early childhood (age 0–2 years)) antibiotic exposure and the subsequent risk of psychiatric and neurocognitive outcomes.
Method
A search was conducted using Medline, PsychINFO and Excerpta Medica databases on 20 November 2023. Risk of bias was assessed using the Newcastle-Ottawa scale, and certainty was assessed using the grading of recommendations, assessment, development and evaluation (GRADE) certainty assessment.
Results
Thirty studies were included (n = 7 047 853 participants). Associations were observed between in utero antibiotic exposure and later development of autism spectrum disorder (ASD) (odds ratio 1.09, 95% CI: 1.02–1.16) and attention-deficit hyperactivity disorder (ADHD) (odds ratio 1.19, 95% CI: 1.11–1.27) and early-childhood exposure and later development of ASD (odds ratio 1.19, 95% CI: 1.01–1.40), ADHD (odds ratio 1.33, 95% CI: 1.20–1.48) and major depressive disorder (MDD) (odds ratio 1.29, 95% CI: 1.04–1.60). However, studies that used sibling control groups showed no significant association between early-life exposure and ASD or ADHD. No studies in MDD used sibling controls. Using the GRADE certainty assessment, all meta-analyses but one were rated very low certainty, largely owing to methodological and statistical heterogeneity.
Conclusions
While there was weak evidence for associations between antibiotic use in early-life and later neurodevelopmental outcomes, these were attenuated in sibling-controlled subgroup analyses. Thus, associations may be explained by genetic and familial confounding, and studies failing to utilise sibling-control groups must be interpreted with caution. PROSPERO ID: CRD42022304128
Antimicrobial resistance (AMR) has become a worldwide growing concern over the past decades. Thus, encouraging manufacturers to develop new antibiotics is needed. We hypothesised that transparency on the regulatory appraisals of antibiotics would provide an incentive to pharmaceutical development. We thus aimed at reporting the French health technology assessment (HTA) opinions and reimbursement decision on antibiotics to those German (G-BA) and English (NICE) HTA bodies.
A qualitative analysis of the Transparency Committee of the French National Authority for Health (TC-HAS) opinions regarding antibiotics assessment between 2016 and 2020 was performed. Decisions of reimbursement by TC-HAS were compared to those from G-BA and NICE when available. TC-HAS recognized a clinical benefit (CB) for 15/15 evaluated indications, a clinical added value for 9/15, and a public health interest for 8/15. Among the valued antibiotics by HAS, 5 were recommended for restricted use as a “reserve” to protect against the risk of resistance emergence. A comparison of HTA opinions was possible across HTA for only 8 antibiotics. The G-BA granted a reserve status for 4 drugs and NICE a reserve with restricted use for 5 antibiotics. Three of these antibiotics were positioned similarly by the English, German, and French HTA bodies. This qualitative analysis of HTA opinions between different European HTA bodies shows a consistent reimbursement decision of antibiotics against MDR bacteria and tuberculosis besides the differences in the applied assessment methods. This work also shows how HTA bodies could recognize a clinical added value in a context of the emergence of antibiotic resistance.
The gut microbiome is widely recognized for its significant contribution to maintaining human health across all life stages, from infancy to adulthood and beyond. This perspective article focuses on the impacts of well-supported microbiome research on global caesarean delivery rates, breastfeeding practices, and antimicrobial use. The article also explores the impact of dietary choices, particularly those involving ultra-processed foods, on the gut microbiota and their potential contribution to conditions like obesity, metabolic syndrome, and inflammatory diseases. This perspective aims to emphasize the need for updated guidelines and policy interventions to address the increasing global trends of caesarean deliveries, reduced breastfeeding, overuse of antibiotics, and consumption of highly processed foods to counter their adverse effects on gut health.
This chapter discusses the extent to which standard economic efficiency analysis can be applied to the economics of reducing ill health caused by environmental factors. This type of analysis is relevant when production functions can be applied to public health environmental situations such as those involving the public supply of safe water and sanitation. On the other hand, different analytical approaches are required to assess more holistically the social economic efficiency of public policies to control most environmentally related diseases. Concrete theoretical evidence about the analytical significance of the presence of externalities is backed up with examples. These cases include cadmium poisoning, drinking water contaminations, issues involved in the control of COVID-19, and the willingness of individuals to vaccinate against infectious diseases. In addition, particular attention is paid to problems involved in determining the social economic efficiency of the amount and use of methods of controlling environmentally related diseases when their effectiveness declines with use.
Inappropriate antibiotic use is a key driver of antibiotic resistance and one that can be mitigated through stewardship. A better understanding of current prescribing practices is needed to develop successful stewardship efforts. This study aims to identify factors that are associated with human cases of enteric illness receiving an antibiotic prescription. Cases of laboratory-confirmed enteric illness reported to the FoodNet Canada surveillance system between 2015 and 2019 were the subjects of this study. Laboratory data were combined with self-reported data collected from an enhanced case questionnaire that included demographic data, illness duration and symptoms, and antibiotic prescribing. The data were used to build univariable logistic regression models and a multivariable logistic regression model to explore what factors were associated with a case receiving an antibiotic prescription. The final multivariable model identified several factors as being significantly associated with cases being prescribed an antibiotic. Some of the identified associations indicate that current antibiotic prescribing practices include a substantial level of inappropriate use. This study provides evidence that antibiotic stewardship initiatives targeting infectious diarrhoea are needed to optimize antibiotic use and combat the rise of antibiotic resistance.
Blastocystis sp. is a prevalent protistan parasite found globally in the gastrointestinal tract of humans and various animals. This review aims to elucidate the advancements in research on axenic isolation techniques for Blastocystis sp. and their diverse applications. Axenic isolation, involving the culture and isolation of Blastocystis sp. free from any other organisms, necessitates the application of specific media and a series of axenic treatment methods. These methods encompass antibiotic treatment, monoclonal culture, differential centrifugation, density gradient separation, micromanipulation and the combined use of culture media. Critical factors influencing axenic isolation effectiveness include medium composition, culture temperature, medium characteristics, antibiotic type and dosage and the subtype (ST) of Blastocystis sp. Applications of axenic isolation encompass exploring pathogenicity, karyotype and ST analysis, immunoassay, characterization of surface chemical structure and lipid composition and understanding drug treatment effects. This review serves as a valuable reference for clinicians and scientists in selecting appropriate axenic isolation methods.
Meningitis is inflammation of the meningeal membranes of the brain and spinal cord. Encephalitis is inflammation of the brain parenchyma with or without inflammation of the meninges. Cerebral perfusion is a function of arterial pressure and intracranial pressure (i.e., cerebral perfusion pressure = mean arterial pressure – intracranial pressure). Hypoperfusion results from cerebral edema and increased intracranial pressure (ICP). Meningitis is a life-threatening condition with up to 30% mortality and high risk of long-term neurological complications.
The differential diagnosis for meningitis and encephalitis includes subarachnoid hemorrhage, cerebral venous thrombosis, metabolic/toxic encephalopathy and other infections not involving the central nervous system (CNS).
Severe crush injury can result in sequelae such as significant bony fractures, rhabdomyolysis, extremity compartment syndrome or crush syndrome. Crush syndrome comprises the systemic manifestations that arise as a result of a crush injury followed by reperfusion. From the rupture of muscle cells, substances such as myoglobin, potassium, phosphorus and creatinine phosphokinase are released into the bloodstream. The patient can subsequently develop hyperkalemia, hypocalcemia, hypovolemia, shock, compartment syndrome, lactic acidosis or renal failure from traumatic rhabdomyolysis (seen in up to 40% of patients with crush injury).
Community-acquired pneumonia (CAP) is a pneumonia that is not acquired in a hospital but, as the name suggests, is acquired elsewhere. Usual pathogens include Streptococcus pneumoniae, Haemophilus influenzae, Mycoplasma pneumoniae, Staphylococcus aureus, Chlamydophila pneumoniae, Legionella pneumophila and Moraxella catarrhalis.
Healthcare-associated pneumonia (HCAP) is no longer recognized as a clinical entity by the 2019 ATS/IDSA Guidelines on the Management of Community-Acquired Pneumonia. HCAP designation did not uniformly predict drug-resistant organisms, so management is driven on an individual basis.
Infective endocarditis (IE) is a microbial infection of the endothelial layer of the heart, the valves or both. The mitral valve is most commonly affected, except in patients with intravenous drug use (IVDU), where the tricuspid valve is more commonly affected. Risk factors include age, chronic hemodialysis, poor dentition, valvulopathy, immunocompromised status, diabetes, IVDU, prosthetic valve and implanted cardiac devices. More than 50% of cases of IE occur in patients older than 60 years.
The majority of cases are due to Gram-positive cocci such as Staphylococcus and Streptococcus species. In patients with negative blood cultures and no recent antibiotic use, the organisms are often the HACEK group (Haemophilus, Actinobacillus, Cardiobacterium, Eikenella, Kingella). Approximately 50% of patients require surgical management.
For the clinical applications of this chapter, necrotizing soft tissue infections (NSTIs) will refer to infection of deep subcutaneous tissues and adjacent fascia.
Mortality is estimated to be around 20–50% in observational literature with variation by infection site and specific organism.
Paucity of early physical examination findings can lead to a delay in diagnosis, as classic superficial findings do not manifest until later in the disease course.
Infection leads to toxin production, cytokine activation and microthrombosis, which all contribute to ischemia, impaired antibiotic delivery and rapid progression.
Early surgical intervention decreases morbidity and mortality.
NSTIs can be classified based on microbial etiology, with polymicrobial etiology being the most common. Type I necrotizing fasciitis is polymicrobial in origin. Type II is monomicrobial, often caused by group A Streptococcus (typically, S. pyogenes). Staphylococcal NSTIs are increasing in prevalence due to community-associated methicillin-resistant S. aureus.
Exotoxin release by clostridia, staphylococci and streptococci can enhance cytokine release and promote an inflammatory cascade, which can lead to death if untreated.
NSTIs are more common in patients with comorbidities including diabetes mellitus, chronic alcoholism, chronic renal failure, HIV, liver failure (which is classically associated with Vibrio vulnificus) and other immunosuppressed states.