Observational studies provide valuable insights by monitoring health outcomes and behaviors without introducing interventions or treatments. These studies often explore long-term observations, patient experiences, or quality-of-life assessments to id...
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Found 96 Actively Recruiting clinical trials
Actively Recruiting
This observational study focuses on children under 18 years of age with tracheostomies who are followed at the Long-Term Intensive Care Unit (LIVA) at Karolinska University Hospital in Sweden. It aims to determine how often tracheostomy-related airway complications are asymptomatic or linked to symptoms detected through surveillance airway endoscopy. Additionally, the study evaluates how accurately caregivers and pediatricians can identify symptoms related to serious airway complications. Children scheduled for regular surveillance airway endoscopy under anesthesia as part of their follow-up at LIVA will be included. Upon admission, caregivers complete a questionnaire about possible symptoms of airway complications. The child then undergoes a physical exam and medical history review by a pediatrician following a set protocol. An ENT surgeon, unaware of the questionnaire and pediatrician exam results, performs the airway endoscopy to identify complications. During the study, researchers will compare caregiver and pediatrician reports with findings from airway endoscopy to assess symptom reliability. The main measurements include the proportion of patients with serious tracheostomy airway complications who show no symptoms before endoscopy. The study spans two years, with ongoing surveillance and the collection of data on symptoms and complications. Ethical approval has been obtained to conduct this research.
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Healthy Volunteer
Researchers are conducting a Phase I clinical trial to evaluate the safety, tolerability, and pharmacokinetic profile of AK0610 in healthy Chinese adults aged 18 to 50. The study is randomized, double-blind, and placebo-controlled, focusing on single-dose administration with dose escalation and expansion phases. The trial involves healthy volunteers to understand how the body processes AK0610 and to monitor any side effects. The trial has two parts: a dose-escalation phase with five cohorts receiving increasing doses of AK0610 or placebo either intramuscularly or intravenously, and an expansion phase with two additional cohorts based on pharmacokinetic data. Doses range from 100 mg to 3000 mg, administered once on Day 1. Participants receive either AK0610 or placebo in a 3:1 ratio in all cohorts. Participants undergo a screening period from Day -29 to Day -1, followed by the dosing on Day 1 and an inpatient observation period until Day 8. Afterward, there is a blinded follow-up period lasting until Day 181, with those receiving AK0610 entering an open-label period from Day 182 to Day 361. Researchers will monitor adverse events, measure serum drug concentrations, and assess immunogenicity and RSV-neutralizing activity throughout the study.
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Prostate cancer is the most common cancer among men in Denmark, often developing slowly without symptoms. This trial evaluates a complex intervention designed to improve how general practitioners (GPs) use prostate specific antigen (PSA) tests in line with national guidelines. The goal is to reduce overdiagnosis and overtreatment caused by unnecessary PSA testing, by promoting evidence-based practice among GPs in quality clusters. The intervention involves a cluster package including a pre-recorded podcast for GPs, a two-hour cluster meeting with educational material and group discussions, and two sets of hand-outs to support GPs in their clinics. Quality clusters are randomized to either receive this intervention over six months or act as a control group, which will be offered the intervention afterward. Participants, who are quality clusters of GPs, will be involved in cluster meetings and use the provided materials. Researchers will measure changes in PSA testing frequency among men during the six-month intervention period, as well as variations between GPs. The study includes assessments of PSA test use before and after the intervention to evaluate its impact on clinical practice.
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Researchers are evaluating the efficacy and safety of biological agents in patients with allergic bronchopulmonary aspergillosis (ABPA), a condition that often affects people with severe bronchial asthma. The study follows guidelines from ISHAM for ABPA diagnosis and treatment, aiming to understand how biologics can impact this condition. This is a prospective, multicenter observational cohort study sponsored by Qianfoshan Hospital. Participants receive standard medical treatment consisting of oral prednisone with a tapering dose over several weeks, with or without oral voriconazole. Some patients also receive biological agents combined with this standard therapy for at least four months, following GINA2025 guidelines. The biologics are given alongside existing asthma treatments, such as inhaled corticosteroids and long-acting beta-agonists. The study compares groups receiving biologics plus standard treatment versus standard treatment alone. During the study, researchers monitor participants for one to two years, assessing the number of exacerbations, hospitalizations, time to first exacerbation, remission rates, glucocorticoid use, asthma control, and various immune markers such as serum IgE and eosinophil counts. Safety and overall mortality are also tracked. This extensive follow-up includes measuring treatment responses at eight weeks and ongoing assessments to evaluate long-term effects and disease control.
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Healthy Volunteer
Researchers are investigating the long-term effects of a multidomain program that includes physical activity, choir singing, learning, and horticulture on preventing cognitive decline in older adults who show signs of frailty. The study aims to see if engaging in these varied activities, especially music, can slow down cognitive and perceptual decline, encourage positive brain changes during aging, and reduce loneliness by promoting social interaction. Participants will be community-dwelling elderly individuals aged 65 and older. Participants will be randomly assigned to one of three groups: one that takes part in the multidomain intervention including choir and other activities, an active control group that engages in several activities excluding music, and a passive control group that does little or sporadic activity. The program lasts for nine months, during which participants regularly attend their assigned activities. Researchers will collect saliva samples and perform various assessments before and after the program, as well as six months later. Throughout the study, participants will be tested three times to measure brain-derived neurotrophic factor (BDNF) levels, cognitive abilities, hearing function, frailty status, and psychosocial well-being. They will also keep weekly diaries to track the time spent on activities. The study includes detailed evaluations such as neuropsychological tests, audiometric exams, and brain response measurements to understand how these interventions impact brain health and overall function over time. The total study duration for each participant covers the nine-month intervention plus a six-month follow-up.
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Healthy Volunteer
Researchers are evaluating the safety, tolerability, pharmacokinetics, and pharmacodynamics of a single dose of BW-50218 in healthy Chinese adults. This Phase 1 study aims to understand how this drug behaves in the body and its effects, involving participants aged 18 to 60 years who are generally healthy. Participants will receive one of several single doses of BW-50218 injection or a saline placebo. The study uses a randomized, double-blind design to compare different doses of BW-50218 against placebo. Each participant will receive only one dose, and the effects will be monitored over time. During the study, researchers will conduct various assessments including blood tests for hematology and chemistry, urinalysis, vital signs, ECGs, and physical exams from baseline to Day 360 after dosing. They will track adverse events and measure drug levels in plasma and urine up to Day 8. Participants will be closely monitored throughout the study duration, which lasts about one year, to evaluate the drug’s safety and how the body processes it.
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Acute Respiratory Distress Syndrome (ARDS) is a sudden and severe lung injury that leads to acute respiratory failure, affecting around 3 million people worldwide each year and accounting for about 10% of intensive care unit admissions. Because there are no specific drug treatments available, mechanical ventilation is the main method used to support patients. This study aims to identify and analyze factors that predict outcomes for patients with ARDS to help improve their prognosis and reduce poor outcomes. This is an observational study where patients with ARDS or at high risk for ARDS are monitored without any investigational treatment intervention. The study observes various clinical measures daily, including chest CT scans, complete blood counts, arterial blood gases, and records fluid balance and mechanical ventilation data continuously after intubation. The study collects detailed health data to better understand ARDS progression and outcomes. Participants will be closely monitored through daily scans, blood tests, and respiratory assessments after enrollment. The main outcomes being measured are mortality rates at 28 and 60 days after diagnosis of ARDS. Monitoring includes continuous mechanical ventilation data and fluid balance whenever changes occur. The study involves informed consent and follows patients during their critical illness to gather real-world information on respiratory failure outcomes.
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Healthy Volunteer
Researchers are evaluating AN01, a selective small-molecule dual inhibitor of phosphodiesterase 3 and 4 (PDE3/4), as a potential new therapy for chronic obstructive pulmonary disease (COPD). This study focuses on assessing the safety, tolerability, and how the body processes multiple doses of AN01 in healthy adult participants. The trial is designed as a phase 1 study and sponsored by AirNexis Therapeutics, Inc. The study includes three multiple ascending dose (MAD) groups where participants are randomly assigned to receive either placebo or increasing doses of AN01 in a double-blinded manner. An additional dose group may be added by the sponsor if needed. Treatments are given as inhalation powder, with the dosing period lasting up to 14 days. Participants will undergo various health assessments including physical exams, vital signs, laboratory tests, lung function tests (spirometry), respiratory assessments, and heart monitoring via 12-lead electrocardiogram (ECG) from day 1 through day 14. The study also collects blood samples to analyze how AN01 is absorbed, distributed, metabolized, and eliminated. Researchers will monitor for any side effects or abnormal results during and shortly after dosing to evaluate safety and tolerability.
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Healthy Volunteer
Researchers are evaluating an artificial intelligence (AI) model designed to help doctors predict patient diagnoses and outcomes, such as survival and length of hospital stay. This prospective study uses real-time, multimodal health data from hospital electronic health records, including labs, vital signs, medical history, and imaging. The goal is to improve the accuracy and speed of diagnosis and treatment in real-world hospital settings, enhancing patient care. The study involves patients admitted to various hospital departments, including ICU, general wards, emergency, and outpatient services. The AI system integrates multiple types of patient data to support clinical decision-making while patients continue to receive standard examinations and care. This observational study follows patients to compare the AI model's performance with standard practice over time. Participants will be tracked using electronic health records and hospital data to assess outcomes such as diagnostic accuracy, hospital resource use, and adverse event rates over one year. Researchers will measure improvements in hospital efficiency, patient outcomes, and population health impact. The study aims to provide real-world evidence of how AI may assist medical decision-making across hospital settings.
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Healthy Volunteer
Researchers are exploring how generative artificial intelligence (genAI) can improve the clarity and understanding of informed consent materials used in clinical research. The study focuses on testing whether large language models like ChatGPT and NotebookLM, alongside AI tools such as ElevenLabs, can simplify these documents to help participants better comprehend study procedures and risks. This pilot aims to promote truly informed consent, potentially increasing study enrollment, participant willingness, and data accuracy. The study involves different groups reviewing or listening to versions of informed consent forms (ICFs). Participants may review the original or AI-simplified ICF text or listen to podcasts based on either version. There are specific groups including adult participants, clinical investigators who conduct trials, and individuals involved in Institutional Review Board (IRB) activities. Each group experiences different formats of the consent material to assess understandability. During the study, participants' understanding will be evaluated immediately after reviewing or listening to the materials using the Quality of Informed Consent (QUIC) measure. Researchers will also track the time taken to read and understand the consent forms and assess participant comprehension of the study. The study is sponsored by the University of California, Los Angeles and involves adults aged 60 and over as patients, as well as clinical staff and IRB members, with assessments conducted on the first day of participation.
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