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Showing 1-20 of 1,042 trials
NCT05117125
The purpose of this study is to evaluate different peptide biomarkers, variations in the microbiome and patterns in the bacterial transcriptome as prognostic or diagnostic biomarkers of VAP.
NCT07664449
Babies in neonatal intensive care units (NICUs) sometimes need help breathing using a breathing tube (endotracheal tube, or ETT) connected to a breathing machine (ventilator). Over time, bacteria and other substances can build up on the inside of these tubes. This build-up may contribute to infections, inflammation, or breathing problems, but we do not fully understand how often this occurs or what is present within the tubes used in UK NICUs. This surveillance study will collect breathing tubes that have been removed from babies who have been ventilated for more than 12 hours as part of their normal clinical care. No additional procedures or interventions will be performed on babies, and the tubes would otherwise be discarded. Researchers will examine the used tubes and any respiratory secretions (mucus) associated with them. Laboratory testing will identify any bacteria or other microorganisms present and analyse the chemical composition that has accumulated within the tubes and respiratory secretions. By studying these samples, we hope to better understand how breathing tubes become colonised over time and how this may relate to infection and lung health in newborn babies. This study aims to identify the microorganisms that colonises ETT and map them in a contemporary UK neonatal cohort. The information gained from this study may help improve infection surveillance, guide future research, and support the development of strategies to reduce complications associated with mechanical ventilation in vulnerable newborn infants.
NCT06834971
Previous studies have identified Acinetobacter baumannii (AB), Pseudomonas aeruginosa (PA), and Klebsiella pneumoniae (KP) as the predominant pathogens responsible for ventilator-associated pneumonia (VAP). The challenge of drug resistance, especially against carbapenem is intensifying, with variations noted across different regions. Multidrug-resistant organisms associated VAP (MDR-VAP) are increasing in frequency and are associated with significant morbidity, mortality, therefore imposes a heavy burden on the healthcare system. Colistin methanesulfonate sodium (CMS) has shown effectiveness against gram-negative bacteria, including carbapenem-resistant organisms (CRO) such as carbapenem-resistant Acinetobacter baumannii (CRAB), carbapenem-resistant Pseudomonas aeruginosa (CRPA), and carbapenem-resistant Klebsiella pneumoniae (CRKP). This trial aims to evaluate the efficacy of a 3-day course of inhaled CMS in lowering the incidence of VAP among patients undergoing invasive mechanical ventilation for at least two days and at high risk of MDR-VAP.
NCT05167318
Premature very low birth weight (VLBW) infants are susceptible to complications related to infrequent and non-standardized oral care. Although the benefits of frequent standardized oral care are known to reduce oral dybiosis (increased level of potentially pathogenic bacteria) and its associated complications in critically ill adults leading to established evidence-based guidelines, no such information exists for VLBW infants. The proposed study will prospectively follow 40 VLBW infants for 4 weeks following birth. Infants will be randomized into 1 of 2 groups. Standardized oral care will be performed every 3-4 hours (Group 1) and every 12 hours (Group 2). Aim 1 will evaluate the feasibility of frequent standardized oral care, Aim 2 will compare the oral microbiome between groups, and Aim 3 will compare respiratory outcomes including the incidence of ventilator associated pneumonia, bronchopulmonary dysplasia and need for respiratory support between infants receiving standardized oral care every 3-4 hours and every 12 hours. Issues related to recruitment, retention, randomization, acceptance by nursing staff, and treatment fidelity will be examined. Saliva samples will be obtained weekly and analyzed using 16S sequencing, respiratory cultures will be obtained weekly on ventilated infants, and respiratory outcomes will be collected from the medical records.
NCT07070284
The ESCAPE 10 study is a multinational, retrospective, observational cohort study that aims to investigate the epidemiology and outcome determinants of severe community-acquired pneumonia (sCAP) in elderly patients (≥65 years). Conducted across multiple European countries, the study will include at least 500 patients admitted to acute care hospitals with radiologically confirmed sCAP, with enrollment distributed evenly between epidemic (winter) and non-epidemic (summer) seasons. The primary objective is to assess 28-day mortality. Secondary objectives include evaluating in-hospital mortality, pneumonia-related complications, Intensive Care Unit (ICU) stay, ventilation needs, and identifying clinical risk factors associated with poor outcomes. Additionally, the study aims to propose a set of quality indicators for sCAP management and assess gender-related differences and clinical subphenotypes in the post-COVID-19 era. Data will be retrospectively collected from medical records, with no interventions applied. Findings from this study are expected to guide improvements in clinical care, patient safety, and outcome prediction models in elderly populations with sCAP.
NCT07567911
This is a prospective, multicenter observational cohort study involving approximately 2,700 patients, designed to delineate the natural history of pneumonia by tracking the complete clinical course and dynamic multi-omics evolution from the acute phase to recovery; the study aims to quantify severe conversion rates and mortality by comparing baseline characteristics, pathogen distribution, and immune response trajectories between severe and non-severe groups, ultimately revealing the underlying molecular mechanisms of disease progression and optimizing clinical risk stratification strategies.
NCT06966310
Community acquired pneumonia, in particular when requiring oxygen therapy because of acute hypoxemic respiratory failure and meeting acute respiratory distress syndrome (ARDS) criteria frequently leads to tracheal intubation and poor outcome. Among invasively mechanically ventilated patients with ARDS and presenting a PaO2/FiO2 ratio (arterial partial pressure of oxygen to inspired fraction of oxygen) of less than 150 mmHg, the prone position significantly reduces mortality and represents standard care (Guérin 2013). Among non-intubated COVID-19 patients, a subtype of viral community acquired pneumonia, a recent study showed that awake prone positioning reduces the composite outcome of intubation or death among patients requiring nasal high flow therapy. Furthermore, it favored weaning of nasal high flow therapy. Prone position in patients with non-COVID ARDS treated with high nasal flow was evaluated in 20 patients with predominantly viral pneumonia (Ding 2020) and was associated with improved oxygenation. Coordinating investigator hypothesize that prone positioning of patients suffering non-COVID community acquired pneumonia and undergoing nasal high flow therapy can significantly improve outcome by reducing the need for intubation and associated therapies such as sedation and muscle relaxation.
NCT07563075
Due to children's lower oxygen reserves and higher oxygen consumption, sedation can easily lead to respiratory adverse events such as hypoxemia. It has been reported that the incidence of hypoxemia during pediatric bronchoscopy is high, highlighting that hypoxemia in pediatric painless bronchoscopy is an urgent problem requiring a solution. High-flow nasal cannula (HFNC) oxygen therapy delivers heated and humidified breathing gas with a precisely controllable oxygen concentration, at flow rates exceeding the patient's peak inspiratory flow, directly via unsealed nasal prongs. It is a simple, comfortable, effective, and non-invasive respiratory support method that has been widely adopted in clinical practice. However, the effectiveness of HFNC in pediatric sedation remains unclear. Therefore, this multicenter randomized controlled trial aims to evaluate whether HFNC can effectively reduce the occurrence of hypoxemia during sedated bronchoscopy in pediatric patients.
NCT04663958
The term postoperative pulmonary complication is the development of any complications affecting the respiratory system after anesthetic and surgery procedures. The ARISCAT risk assessment score is a seven-variable regression model that divides patients into low, moderate, and high-risk groups. In this study, the investigators aimed to investigate the effectiveness of the ARISCAT risk scoring index in predicting postoperative pulmonary complication development in patients scheduled for major abdominal cancer surgery.
NCT00001352
The protocol will be carried out in accordance with International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use (ICH) Good Clinical Practice (GCP) and the following United States Code of Federal Regulations (CFR) applicable to clinical studies: 45 CFR Part 46, 21 CFR Part 50, 21 CFR Part 56, 21 CFR Part 312, and/or 21 CFR Part 812. NIH-funded investigators and study site staff who are responsible for the conduct, management, or oversight of NIH-funded studies have completed Human Subjects Protection and ICH GCP Training. The protocol, informed consent form(s), recruitment materials, and all participant materials will be submitted to the Institutional Review Board (IRB) for review and approval. Approval of both the protocol and the consent form must be obtained before any participant is enrolled. Any amendment to the protocol will require review and approval by the IRB before the changes are implemented to the study. In addition, all changes to the consent form will be approved by the IRB; an IRB determination will be made regarding whether a new consent needs to be obtained from participants who provided consent, using a previously approved consent form.
NCT07552779
Healthy adults will be enrolled into this open-label, Phase 1 research study. Participants will spend about 9 nights and 10 days in the clinical research unit (CRU) and the total time in the study will be about 11 weeks. The goal of this clinical trial is to compare how much of the study drug ibuzatrelvir is in participants' blood after taking one of the two different types of tablets containing the same amount of ibuzatrelvir without food. The study will also measure how much ibuzatrelvir is in participants' blood after taking one type of the tablets dispersed in water and when one type of the tablets is taken with food. This study drug is taken by mouth.
NCT07545096
A major challenge in children's infections is that it is difficult to work out which bug is making them unwell. Tests can find the bugs that are present though there can be more than one. Some bugs may just be bystanders and not actually making the child sick. Children still receive antibiotics because it is not always clear that they don't need them. This project explores whether measuring how the body is reacting to the bugs gives precise information about which bug is actually making them sick. It will investigate children in intensive care who are suspected of having a chest infection. This study uses a novel technology called "metagenomics" to detect any bacteria or viruses in the lung. Alongside this, investigators will measure how the lungs respond to the bugs through further tests of cells and proteins collected from the lung fluid. This fluid will be tested to see if the response is due to bacteria or viruses. Collecting lung fluid samples requires that children are sedated and intubated, having a breathing tube in place. This means that only children intubated in intensive care are eligible. Extra samples of lung fluid and blood will be collected when being taken for routine clinical care. If these tests work, they have the potential to give rapid and accurate information about what type of infection is taking place in the lung. This means the correct antibiotics can be given to children who need them and avoid the harms of giving them to children who do not. This can reduce cost, improve patient outcomes and help limit the development of antibiotic resistance.
NCT06782282
The purpose of this study is to learn about how well the Prevnar 20 vaccine (PCV20) stops invasive pneumococcal disease (a group of severe infections caused by a bacteria called Streptococcus pneumoniae), pneumococcal pneumonia (a bacterial lung disease caused by the germ Streptococcus pneumoniae), all-cause pneumonia (pneumonia caused by any germ including bacteria, a virus, or a fungus), and lower respiratory tract infection (infection of the lower airways in the lung) in people 65 years and older. This study will use a database of people who have Medicare insurance with names and other identifying information removed. This study will include people who: * are 65 years and older, * live in one of the 50 United States or Washington DC, and * are enrolled in Medicare Fee-for-Service Parts A and B for at least 1 year. The study uses data that is already being collected and no treatment or vaccine will be given in the study. People that fit the description above will be followed in the Medicare database for about two years. Their information will be reviewed to see if they had vaccines for pneumonia or had certain health events, such as pneumonia or lower respiratory tract infection. The experiences of people that received Prevnar 20 will be compared to the experiences of people that did not receive the vaccine. This will help to show how well Prevnar 20 works at stopping invasive pneumococcal disease, pneumococcal pneumonia, all-cause pneumonia, and lower respiratory tract infection.
NCT07388680
Radiation-induced lung injury (RILI) is one of the most common thoracic-radiotherapy complications, with an incidence as high as 31.4 %. Multiple studies have shown that RILI can adversely affect patient prognosis by disrupting treatment schedules. Moreover, the widespread clinical use of immune-checkpoint inhibitors (ICIs) has further increased pulmonary toxicity when radiotherapy (RT) is combined with ICIs. Checkpoint-inhibitor-related pneumonitis (CIP)-i.e., immune-mediated lung injury-may necessitate permanent discontinuation of ICIs, diminish survival benefit, and, in severe cases, directly threaten life. The diagnosis of both RILI and CIP is based on an integrated assessment of subjective symptoms and imaging findings.RILI typically occurs 1-3 months after completion of radiotherapy, whereas CIP may emerge at any point during treatment. The two entities share similar clinical presentations: fever, dry cough, chest tightness, dyspnoea, and pleuritic chest pain. Computed tomography (CT) is the most sensitive imaging modality. Pulmonary-function testing is another routinely used clinical metric; vital capacity, total lung capacity, forced expiratory volume in 1 s (FEV₁), and diffusing capacity of the lung for carbon monoxide (DLCO) may all decline, with DLCO being the most sensitive parameter. In advanced cases, arterial oxygen and carbon-dioxide tensions may also deteriorate.Currently, RILI is managed empirically with systemic corticosteroids and supportive care; however, this approach yields limited improvement in diffusing capacity or ventilatory function, and its ability to prevent radiation-induced pulmonary fibrosis (RPF) remains undefined. Corticosteroids also remain the mainstay of CIP therapy. Pirfenidone, a potent cytokine inhibitor, attenuates fibroblast activity by reducing production of transforming growth factor-β1 (TGF-β1), platelet-derived growth factor (PDGF), and fibroblast growth factor (FGF), thereby suppressing fibroblast proliferation and extracellular-matrix collagen synthesis. Pre-clinical efficacy studies have demonstrated robust anti-inflammatory, anti-oxidant, and anti-fibrotic effects in the lung.Because RILI and pneumonitis arising from combined radio-immunotherapy are often indistinguishable in clinical practice, and because both share pathogenetic features with idiopathic pulmonary fibrosis (IPF), the investigators initiated this phase II/III trial to address the unmet medical need for effective therapy. Building on prior pre-clinical and clinical data, the study aims to establish the optimal dose of pirfenidone capsules for RILI with or without concomitant CIP and to confirm efficacy and safety.Phase II (dose-finding): The study consists of a screening period (Day -28 to Day -1), a 168-day treatment-observation period (Day 1-Day 168), a safety follow-up (28 ± 7 days after the last dose), and subsequent disease-progression and survival follow-up. Ninety subjects with RILI, with or without CIP, who meet all eligibility criteria will be randomly assigned 1:1:1 to low-dose pirfenidone (400 mg TID), high-dose pirfenidone (600 mg TID), or matching placebo.Phase III (confirmatory): The dose of pirfenidone capsules for phase III will be determined jointly by the sponsor and investigators based on accumulated efficacy and safety data. The trial structure mirrors phase II: screening (Day -28 to Day -1), 168-day treatment-observation (Day 1-Day 168), safety follow-up (28 ± 7 days after the last dose), and disease-progression and survival follow-up. Eligible subjects with RILI ± CIP will be randomized 1:1 to receive either pirfenidone capsules (400 mg or 600 mg TID, taken with meals) or identical placebo. After completion of the 28-day post-treatment follow-up, all phase III participants will enter an extension phase for long-term survival assessment every 3 months (± 7 days).This trial will investigate the progression-free survival (PFS) and overall survival (OS) associated with pirfenidone capsules in patients with Grade 2 and 3 radiation-induced lung injury (RILI), with or without chemotherapy-induced pneumonitis (CIP).
NCT07541690
1. Sample: urine, pus and sputum samples. 2. Culture: the samples will be inoculated on the MacConkey agar and subcultured on eosine methylene blue agar. 3. Identification of isolates will be done by: * Colony morphology. * Gram staining. * Biochemical reactions: including Indole, Methyl red, Voges-Proskauer, and Citrate utilization (IMViC) tests. 4. Antimicrobial susceptibility testing of the isolates will be performed using the Kirby-Bauer method (disc diffusion method) using Muller Hinton agar according to the Clinical and Laboratory Standards Institute (CLSI 2025) guidelines for selected groups of antibiotics. 5. Phenotypic detection of biofilm formation by the microtitre plate method. 6. Phenotypic detection of efflux pump activity by ethidium bromide-agar cartwheel method. 7. Detection of biofilm genes (fimH-1, mrkA, and mrkD) by conventional PCR. 8. Detection of efflux pump genes (acrAB, tolC, and mdtk) by conventional PCR.
NCT04466683
Low doses of radiation in the form of chest x-rays has been in the past to treat people with pneumonia. This treatment was thought to reduce inflammation and was found to be effective without side effects. However, it was an expensive treatment and was eventually replaced with less expensive treatment options like penicillin. The COVID-19 virus has emerged recently, causing high rates of pneumonia in people. The authors believe that giving a small dose of radiation to the lungs may reduce inflammation and neutralize the pneumonia caused by COVID-19. For this study, the x-ray given is called radiation therapy. Radiation therapy uses high-energy X-ray beams from a large machine to target the lungs and reduce inflammation. Usually, it is given at much higher doses to treat cancers. The purpose of this study is to find out if adding a single treatment of low-dose x-rays to the lungs might reduce the amount of inflammation in the lungs from COVID-19 infection, which could reduce the need for a ventilator or breathing tube.
NCT07428759
This study will evaluate the safety and immune response of a new formulation of pneumococcal vaccine, PnMAPS30plus, in healthy adults aged 50 to 64 years. Participants will receive a single dose of either the investigational vaccine or an approved pneumococcal vaccine (PCV20) and will be monitored for approximately six months. The study aims to determine if PnMAPS30plus is safe and well-tolerated and whether it helps the body produce antibodies that protect against pneumococcal disease.
NCT05041140
This study is designed to measure the correlation of hyperpolarized 129-Xe magnetic resonance imaging (129-XeMRI) in allogeneic hematopoietic cell transplant (allo-HCT) recipients at MD Anderson Cancer Center (MDACC) who develop bronchiolitis obliterans syndrome (BOS) or BOS stage 0p (pulmonary impairment not meeting the definition for BOS, defined below) and controls with chronic graft-versus-host disease (cGVHD). The primary objective of the study is to correlate 129-Xenon measures of ventilation, gas exchange, and pulmonary circulation with spirometric and quantitative CT measurements. A secondary objective is to determine whether measurement of 129-Xe MRI characteristics in patients with BOS stage 0p can predict BOS progression 6 months after enrollment.
NCT01137487
Early enteral feeding is a key component of the management of critically ill patients receiving mechanical ventilation. However, enteral feeding has been associated with serious complications such as aspiration followed by ventilator-associated pneumonia (VAP). Many critically ill patients experience poor tolerance of early enteral nutrition because of impaired gastric motility, which leads to a sequence of delayed gastric emptying, increased gastric volume, gastroesophageal reflux, vomiting, aspiration, and VAP. Routine monitoring of residual gastric volume (RGV) to minimize the risk of aspiration is standard practice. RGV is assumed to reflect gastric content, with high RGVs indicating impaired gastric emptying that requires discontinuation of enteral feeding in order to prevent aspiration.However, RGV measurement is neither standardized nor validated. The cut-off value that may indicate an increased risk of aspiration and therefore a need for discontinuing enteral feeding has not been determined, and cut-offs used in studies have ranged from 150 to 500 ml. No data are available to support a correlation between RGV and the rates of adverse events. In experimental studies, RGV failed to correlate with vomiting, aspiration, or VAP. The investigators hypothesize that RGV monitoring fails to decrease the risk of VAP and leed to inappropriate interruptions in enteral feeding with a risk of underfeeding. To assess the effects of not measuring RGV on VAP and enteral feeding delivery, the investigators designed a prospective randomized controlled study.
NCT06921993
Pneumonia is a major cause of illness and death in children, with an annual incidence of about 3.3 per 1,000 in those under five years old, many requiring hospitalization. The diagnosis is challenging due to the absence of a universally accepted gold standard, leading to variability in emergency settings. Current guidelines recommend diagnosis based on history and physical examination, which do not reliably differentiate pneumonia from other respiratory infections or identify whether it is bacterial or viral in nature. This uncertainty can lead to the unnecessary use of antibiotics. Commonly used chest X-rays have limitations such as low sensitivity, moderate interobserver reliability, and the inability to distinguish bacterial from viral pneumonia. In contrast, lung ultrasound has shown high sensitivity and specificity for diagnosing pneumonia in children. However, lung ultrasound also cannot reliably distinguish between bacterial and viral causes and might lead to increased antibiotic prescriptions by detecting minor lung consolidations not seen on chest X-rays. Despite these issues, lung ultrasound is widely used in pediatric pulmonary assessment. The primary objective of the study is to determine if using lung ultrasound for diagnosing pneumonia in children can reduce antibiotic prescriptions compared to the standard care approach-which mainly relies on clinical diagnosis (often supplemented by chest X-ray and blood tests in selected cases). The secondary objective is to assess how frequently lung ultrasound impacts management decisions during a single clinical visit, beyond the information provided by history and physical examination. The third objective is to compare the diagnostic accuracy of lung ultrasound-supported diagnosis with existing diagnostic methods. The study hypothesizes that lung ultrasound results can act as a decision modifier, similar to other clinical tools and examination findings. However, a lack of consensus on specific lung ultrasound parameters and their clinical correlations contributes to variability in managing suspected pneumonia, potentially leading to antibiotic overuse. Eligible participants are children aged three to ten years who are in good general condition and clinically stable, presenting with signs and symptoms of lower respiratory tract infection indicative of pneumonia. Exclusion criteria include children outside the specified age range, those recently hospitalized, those who have undergone prior chest imaging, those already on antibiotic therapy, those with severe clinical instability, and those with underlying conditions predisposing them to severe or recurrent pneumonia. These criteria help ensure that the study population represents general pediatric community-acquired pneumonia cases, avoiding biases from high-risk patients. The ultimate goal of this study is to provide evidence on whether lung ultrasound can serve as a reliable tool to guide antibiotic prescriptions, thereby reducing unnecessary antibiotic use in the management of pediatric pneumonia.