Respiratory Failure

The REALVENT trial is designed to evaluate whether a real-time, algorithm-driven ventilation feedback strategy can improve lung-protective ventilation (LPV) achievement rates in critically ill patients receiving invasive mechanical ventilation. This multicentre randomised controlled trial will compare real-time respiratory waveform monitoring with automated feedback against standard ICU care. The primary endpoint is the LPV achievement rate over the first 72 hours.

The goal of this interventional study is to compare standard mechanical ventilation to a lung-stress oriented ventilation strategy in patients with Acute Respiratory Distress Syndrome (ARDS). Participants will be ventilated according to one of two different strategies. The main question the study hopes to answer is whether the personalized ventilation strategy helps improve survival.

A growing number of patients are surviving a stay in the intensive care unit (ICU) but may experience long-lasting psychological problems, but research evaluating such treatment for ICU patients is scant. The goal of this pilot randomized controlled trial is to evaluate the feasibility, acceptability, and potential benefit of an evidence-based psychological intervention for anxiety and associated outcomes for ICU patients. The main question\[s\] it aims to answer are: * Is this intervention feasible and acceptable in ARF patients? * Is this intervention in the ICU and hospital associated with reduced anxiety symptoms? Participants will participate in a cognitive behavioral therapy informed self-management intervention aimed to reduce anxiety symptoms. Researchers will compare the intervention group to patients who receive usual care to see if the intervention reduces symptoms at the the conclusion of the intervention and at 3 months follow-up.

High-flow nasal cannula is a type of non-invasive respiratory support that helps patients breathe more comfortably. Because the flow is high, it can deliver more oxygen to the lungs and make breathing easier by reducing the effort needed to breathe. However, the best strategy to determine the best oxygen flow rate remains uncertain. Reducing flow rates prematurely can increase work of breathing and prolong ICU stay, while unnecessary prolongation can increase costs. Currently, evidence to guide titration is limited. Heart rate variability is the natural variation in the time between each heartbeat. Heart rate variability reflects the level of autonomic nervous system activity in response to stress. The autonomic nervous system is the part of the nervous system that automatically controls how heart rate speeds up and slows down. When heart rate variability is higher, it indicates that the system is able to adjust to changes in the body, including stress. However, when heart rate variability is low, it indicates that the system is constrained and in a state of stress. The VARIATION study is designed to characterize how heart rate variability goal of this observational study is to learn whether heart rate variability can serve as a marker of the appropriateness of high flow nasal cannula flow support during flow titration in patients with respiratory failure. The main question it aims to answer is: Does heart rate variability change before other conventional respiratory signs when there are changes in respiratory function due to inadequate flow rate? Participants already on high flow nasal cannula as part of their regular medical care will: 1. Undergo a stepwise decrease in high flow nasal cannula flow rate. 2. Be recorded continuously with electrocardiogram and electrical impedance tomography.

The study will compare ICU sub-units, those with additional support of a clinician awareness system, ICU Beacon, and those receiving the standard of care. The win-ratio composite outcome will be assessed by comparing patients by study group and stratified by APACHE score at admission.

To determine the quality of life of patients living with chronic respiratory failure and the impact interventions have on it.

This study uses a non-invasive (external) ultrasound test called Transcranial Doppler (TCD) to measure how blood flows through the major arteries of the brain of children receiving care in the Pediatric Intensive Care Unit (PICU). TCD is already used for clinical reasons in many children, but it is not part of routine monitoring for every critically ill child. By using TCD, the investigators hope to better understand how brain blood flow changes during illness. They will also track children's functional status from before their illness to the time of PICU discharge to explore how brain blood flow patterns relate to neurological outcomes.125 participants will be enrolled and will be on study while in the PICU, estimated to be 3-14 days.

This prospective, open-label randomized controlled pilot trial will enroll participants at the Yale New Haven Hospital. Patients with systolic heart failure, defined as an ejection fraction ≤40%, who require invasive mechanical ventilation (IMV) and are admitted to either the cardiac intensive care unit (CICU) or medical ICU (MICU) will be included. Subjects meeting eligibility criteria will be randomized 1:1 to one of the two treatment groups: * Intervention: Extubation to high-flow nasal cannula (HFNC) * Control: Extubation to non-invasive ventilation (NIV)

The goal of this observational study is to learn about the benefit of monitoring sleep quality using EEG in patients hospitalized in critical care unit for acute respiratory failure. The main question it aims to answer is: • Does EEG monitoring improve sleep quality assessment in critically ill patients with acute respiratory failure compared to nurse sleep quality assessment? Participants hospitalized in critical care unit for acute respiratory failure will have their sleep quality assessed by both EEG monitoring and nurse evaluation during their stay in critical care unit.

Improving Telephone Triage in Emergency Calls with AI The Coordinating Centre for Urgencies and Emergencies in Andalusia (CCUE) handles thousands of calls every day. Each call needs to be assessed based on the information given over the phone to determine how serious the case is. The reasons for calling range from minor health issues to life-threatening emergencies like cardiac arrest (CPA). This project focuses on improving telephone triage for four key emergency situations that often indicate severe or life-threatening conditions: Unconsciousness / Cardiac arrest Difficulty breathing Chest pain (non-traumatic, possible heart-related issues) Stroke symptoms Our goal is to make telephone triage more accurate and efficient by using advanced Artificial Intelligence (AI) techniques, including Machine Learning (ML) and Natural Language Processing (NLP). These tools will help CCUE operators make better and faster decisions, ensuring that patients receive the right care as quickly as possible. How it will be done: The investigators will analyze anonymized historical call data from the emergency coordination system (CCR) and digital clinical records (HCDM). This includes: Structured data: Predefined fields, such as answers to standard triage questions. Unstructured data: Free-text notes and other information recorded during the call. A hybrid AI approach will be used, combining: Traditional AI methods (supervised learning and deep learning) to classify cases. Generative AI techniques (advanced language models) to extract useful insights from free-text data. Building the Best Prediction Model To find the most effective AI model, we will test different machine learning techniques, including: Decision Trees Random Forests Support Vector Machines (SVM) XGBoost Ensemble methods Neural Networks We will also analyze which questions and variables are the most important in predicting the severity of a case. Based on this, we will suggest improvements to the current triage questions to enhance accuracy. Measuring Success We will evaluate the AI model using key performance metrics, including: Accuracy (overall correctness) Sensitivity (ability to detect real emergencies) Specificity (ability to avoid false alarms) False Positive \& False Negative Rates (how often the system makes mistakes) Likelihood Ratios (how well the system distinguishes between urgent and non-urgent cases) F1-Score \& ROC Curve (overall performance indicators) Why This Matters This project will assess how effective the current telephone triage system is and develop a new AI-powered model to improve it. The goal is to help emergency operators quickly identify the most serious cases, reducing response times and improving patient outcomes. In the future, the investigators aim to integrate this improved AI model into the CCUE system to enhance emergency response across Andalusia.

A multimodal educational intervention to target an oxygen saturation target range (SpO2 90-96%) will reduce ventilator length of stay and reduce occult hypoxemia by increased awareness and adherence to a designated oxygen saturation target range.

Liberation from mechanical ventilation involves three steps: weaning, readiness assessment, and extubation. Readiness is determined using clinical criteria such as improvement of the underlying condition, hemodynamic stability, and adequate respiratory effort. Successful extubation is defined as not requiring invasive support within 48 hours. Due to the complexity of ICU patients, various clinical parameters and multi-component scores have been developed to predict extubation success. This study aims to develop and evaluate a multi-component score, the Readiness for EXtubation score (REXs), to predict extubation readiness in ICU patients under invasive mechanical ventilation.

Patients with prolonged mechanical ventilation (PMV) frequently experience impaired ventilation distribution, respiratory muscle dysfunction, secretion retention, and delayed liberation from mechanical ventilation. Electrical impedance tomography (EIT) provides real-time bedside visualization of regional ventilation and enables individualized respiratory physiotherapy strategies. This multicenter randomized controlled trial aims to evaluate whether EIT-guided respiratory physiotherapy improves ventilator-free days at day 28 compared with conventional respiratory physiotherapy in adult patients with PMV. Respiratory physiotherapy consists of airway clearance, chest physiotherapy techniques, breathing pattern optimization, and therapeutic positioning. In the EIT-guided group, real-time EIT imaging is used to individualize physiotherapy strategies based on predefined ventilation distribution indicators, while the control group receives standardized physiotherapy according to institutional protocols without EIT guidance. Secondary outcomes include successful liberation from mechanical ventilation, diaphragm ultrasound parameters, EIT-derived ventilation distribution indices (exploratory mechanistic outcomes), ICU Mobility Scale, healthcare resource utilization, and safety outcomes.

The goal of this clinical trial is to evaluate the effectiveness of photobiomodulation therapy combined with static magnetic field (PBMT-sMF) in adult patients who require mechanical ventilation. The main questions it aims to answer are: (i) Does PBMT-sMF lower the length of stay in the intensive care unit (ICU) for mechanically ventilated patients? (ii) Does PBMT-sMF increase the diaphragm thickness in mechanically ventilated patients in the ICU? Researches will compare active PBMT-sMF plus standard of care to a placebo PBMT-sMF plus standard of care to see if active PBMT-sMF works to prevent or retard disuse atrophy of the diaphragm during mechanical ventilation.

The goal of this single-arm intervention trial is to learn whether using a supraglottic airway (SA) as the primary interface for positive pressure ventilation (PPV) is feasible during delivery room resuscitation of premature infants. This study will be conducted in premature infants born between 29 0/7 and 33 6/7 weeks' gestation who require PPV at birth. The main question it aims to answer is: Is it feasible to use a supraglottic airway as the primary interface to provide effective PPV during delivery room resuscitation in 29 0/7 to 33 6/7 weeks' gestation premature infants? Participants will (1)Be screened prenatally and have informed consent obtained from the birth parent prior to delivery; (2)Be rescreened for eligibility on the day of delivery before receiving the study intervention; (3)Receive PPV using a supraglottic airway as the primary ventilation interface if resuscitation is required at birth; and (4)Have clinical and procedural data collected during delivery room resuscitation and for up to 24 hours after birth.

Sedation is frequently required in critically ill patients admitted to the intensive care unit (ICU), including those receiving non-invasive respiratory support such as high-flow nasal cannula (HFNC), non-invasive ventilation (NIV), or conventional oxygen therapy. Anxiety, agitation, dyspnea, and poor tolerance of respiratory support may compromise treatment adherence and increase the risk of respiratory deterioration and endotracheal intubation. Appropriate sedation may improve patient comfort, facilitate respiratory support, and reduce complications. However, sedation in non-mechanically ventilated ICU patients remains challenging because excessive sedation may lead to respiratory depression or hemodynamic instability. Propofol is commonly used for ICU sedation because of its rapid onset and controllable depth of sedation. Nevertheless, propofol is associated with several adverse effects, including respiratory depression, hypotension, and injection pain, which may limit its use in patients without invasive mechanical ventilation. Ciprofol is a novel short-acting intravenous sedative that acts as a gamma-aminobutyric acid type A (GABA-A) receptor agonist and is structurally related to propofol. Previous studies have demonstrated that ciprofol has rapid onset, predictable sedation, less injection pain, and a potentially lower incidence of respiratory depression and hemodynamic instability compared with propofol. Clinical studies have shown favorable safety and efficacy profiles of ciprofol in procedural sedation, anesthesia induction, and sedation in mechanically ventilated ICU patients. However, evidence regarding its use in ICU patients receiving non-mechanical ventilation is still limited. This study aims to compare the effectiveness and safety of ciprofol versus propofol for sedation in adult ICU patients who are not receiving invasive mechanical ventilation. The study will be conducted as a multicenter retrospective cohort study involving approximately 30 tertiary hospitals in China. Adult ICU patients treated between January 1, 2022 and July 30, 2024 who received intravenous sedation with either ciprofol or propofol while receiving non-invasive respiratory support (including NIV, HFNC, or conventional oxygen therapy) will be included. The primary outcomes are sedation success rate and the incidence of respiratory depression. Sedation success is defined as maintaining the Richmond Agitation-Sedation Scale (RASS) within the target range of -2 to +1 for at least two consecutive hours without discontinuation of the sedation regimen or switching to another sedative. Respiratory depression will be defined based on predefined criteria including severe hypoxemia, markedly reduced respiratory rate, abnormal end-tidal carbon dioxide levels, or apnea. Secondary outcomes include endotracheal intubation rate during the sedation period, ICU length of stay, ICU mortality, and the requirement for vasoactive agents. Propensity score matching and multivariable statistical models will be used to adjust for baseline differences and potential confounders between treatment groups. This real-world study aims to provide evidence regarding the clinical effectiveness and respiratory safety of ciprofol compared with propofol for sedation in ICU patients without invasive mechanical ventilation. The findings may help optimize sedation strategies in critically ill patients receiving non-invasive respiratory support and provide evidence to support future prospective clinical trials.

Patients with morbid obesity who require a breathing machine (mechanical ventilator) in the Intensive Care Unit (ICU) frequently experience partial lung collapse. This happens because the extra weight of the chest and abdomen presses on the lungs, reducing their capacity and making it difficult to maintain adequate oxygen levels. To address this, doctors often perform a standard lung recruitment maneuver, which involves temporarily increasing the air pressure from the ventilator to gently pop open the collapsed lung areas. However, standard bedside monitoring tools make it difficult to see exactly how well the different regions of the lungs are reopening. This prospective observational study aims to evaluate the use of Bedside Lung Ultrasound (LUS), which is a safe, radiation-free imaging tool, to monitor how well the lungs respond to these maneuvers in real-time. During the study, researchers will use a standardized 12-zone ultrasound scan to examine the lungs of mechanically ventilated adult patients (BMI ≥ 33 kg/m²) before, during, and after a step-by-step lung recruitment maneuver. By calculating a "Total Lung Ultrasound Score," the medical team can directly visualize and measure the transition from collapsed tissue to normal, aerated lung tissue. Furthermore, the ultrasound will be used during a step-down pressure phase to help identify the patient's "optimal PEEP" (Positive End-Expiratory Pressure), which is the exact customized pressure needed to keep the lungs open after the maneuver is complete, thereby improving oxygenation and minimizing the risk of lung injury.

After obtaining Institutional Ethical Committee approval of Faculty of Medicine, Minia University and written informed consent from patients or first- degree relatives, this prospective randomized non-blind comparative study will be conducted in adult intensive care unit (ICU) of Anesthesia, Intensive Care and Pain management department Minia university hospital over a period from September 2025 to April 2026. This study is designed to compare the effectiveness of two protocols of sequential use of High Flow Nasal Cannula (HFNC) and noninvasive ventilation (NIV) versus NIV alone in patients with Acute Respiratory failure (ARF) admitted to the intensive care unit (ICU). The study will include 75 patients of both sexes, classified as ASA class Ⅰ-ⅠⅠⅠ, divided into three groups with 25 patients in each group.

This protocol describes a randomized controlled feasibility vanguard study designed to investigate the implementation and effects of esophageal pressure-guided positive end-expiratory pressure (PEEP) titration in patients with high body mass index (BMI) mechanically ventilated patients at the Edmonton Zone. The study will enroll 30 patients with body mass index (BMI) \>=30 kg/m2 who require invasive mechanical ventilation, randomizing them in a 1:1 ratio to receive either esophageal pressure-guided PEEP titration or standard care management. The primary objective focuses on establishing the feasibility of conducting a larger definitive trial, while secondary objectives examine differences in applied PEEP levels, respiratory mechanics, and clinical outcomes between groups. The intervention protocol targets end-expiratory transpulmonary pressure of 0-2 cmH2O.

Preterm and term intubuted infants in the NICU will undergo two sequential suctioning procedures: a new, FDA-approved suction device called EXSALTA (ED) and the standard conventional wall (SCW). The physiological consequences, i.e. changes in heart rate (HR), oxygen saturation (SpO2), cerebral oxygenation (C-rSO2), and cerebral fractional oxygen extraction (C-FOE) between ED and SCW ETT tracheal suctioning system in both open and closed catheter system settings will be evaluated using a randomized cross over design in preterm and term infants receiving mechanical ventilation via an ETT. This study will evaluate the hypothesis that there will be significantly lower variations in HR, SpO2, C-rSO2, and C-FOE during ETT suctioning with ED compared to SCW suctioning systems under both open and close ETT suction settings.

Study Objective This prospective observational study aims to investigate the role of the Diaphragmatic Physiology Similarity Index (DPSI) derived from speckle tracking ultrasound in titrating high-flow nasal cannula (HFNC) flow settings, and to evaluate its application in patients with acute respiratory failure. Primary Research Questions To characterize the features of the DPSI in healthy individuals and in patients with acute respiratory failure. To assess the behavior of the DPSI under different HFNC flow settings in patients with acute respiratory failure. Secondary Research Questions Feasibility and inter-operator reproducibility of diaphragmatic speckle tracking. Assessment of the Diaphragmatic Contraction Synchrony Index. Evaluation of End-Diaphragmatic Residual Contraction (EDRC). Additional fundamental parameters, including diaphragmatic displacement velocity and maximum displacement.

Study Overview The goal of this clinical trial is to learn whether an improved non invasive ventilation mask with airway washout can reduce how often people need to breathe and perform as well as standard NIV masks when used with different ventilators, in people receiving NIV therapy for respiratory distress or respiratory insufficiency. The main question(s) it aims to answer are: * Does the new mask reduce breathing rate compared with a standard NIV mask? * Does the ventilator perform as expected when used with the new mask, including pressure delivery and leak? * Do clinicians and participants find the new mask fits and functions well? Three iterations of the new mask (vented, non-vented, dual limb) will be compared to standard of care to see if the mask reduces the need to breathe and performs consistently across ventilators compared with usual NIV masks. \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ What Participants Will Do Participants will wear two different NIV masks, each for one hour, during a single study session lasting approximately 2.5 hours. Participants will be asked to: * Wear a small, stick on carbon dioxide (CO₂) sensor on the skin. * Use their usual NIV mask for one hour while ventilator data are collected. * Switch to the investigational mask for one hour while ventilator data are collected. * Choose whether to return to their original mask or remain on the investigational mask after the study period. * Caregiver opinion on the mask will be collected. Participants may also choose (optional): * To have three small blood samples taken (These samples are optional, and participants can still take part in the study if they decline them.) * One when they agree to take part in the study * One when the investigational mask is fitted * One after wearing the investigational mask for one hour * To provide feedback on how the two masks felt and performed. During the study, researchers will collect data from the ventilator, including: * Breathing rate and depth * NIV pressure settings * Amount of air leak Research staff will also complete a short form assessing how well the mask fit and functioned. Participants will remain in the study until the investigational mask is removed.

Assisted mechanical ventilation is widely used to preserve diaphragmatic activity and improve lung aeration in patients with acute respiratory failure. However, during assisted ventilation, excessive inspiratory effort may develop and contribute to lung injury, diaphragmatic overload, and patient self-inflicted lung injury. Optimizing ventilator settings to modulate respiratory effort therefore represents a major physiological and clinical challenge. Positive end-expiratory pressure (PEEP) is a key determinant of lung recruitment and respiratory system mechanics and may influence inspiratory effort by modifying lung volume, compliance, and respiratory drive. Despite its widespread use, PEEP titration in clinical practice is still mainly guided by oxygenation parameters, while its direct effects on inspiratory effort during assisted mechanical ventilation remain insufficiently characterized. This physiological randomized crossover study aims to evaluate the effect of four predefined levels of positive end-expiratory pressure (0, 5, 10, and 15 cmH₂O) on the respiratory system and inspiratory effort in adult patients receiving assisted mechanical ventilation. Patients will be exposed to each PEEP level in randomized order, with stabilization and washout periods between conditions, while ventilatory support settings other than PEEP are kept constant.

subjects on mechanical ventilator who are about to be extubated to Non invasive ventilation because the physician thinks they are high risk for failure will be approached and consented for our study. Once randomized they will either be on the standard of care Non invasive arm or the intervention arm which would mean they are placed on the Biphasic cuirass ventilation.

The goal of this double blinded randomized control trial is to learn if percutaneous cryoablation of traumatic rib fractures improves outcomes. The main questions it aims to answer are: Does percutaneous cryoablation improve short and long term pain scores? Does percutaneous cryoablation improve short and long term respiratory mechanics? Does percutaneous cryoablation improve long term quality of life? Does percutaneous cryoablation decrease delirium? Researchers will compare cryoablation to standard multimodal pain therapy to see if this impacts respiratory recovery. Participants will undergo randomization, percutaneous cryoablative procedure, and participate in tests at pre-determined intervals to evaluate their pulmonary recovery.