Airway Clearance Impairment

Adults who are unconscious or severely ill and need a breathing tube connected to a ventilator are at high risk of developing a lung infection (pneumonia) within the first few days in the intensive care unit. This early pneumonia affects up to 30 to 50 % of certain high-risk patients, prolongs the time on the ventilator and in hospital, and increases the use of antibiotics. Two strategies are commonly used today to try to prevent this infection: a short, three-day course of an intravenous antibiotic, and removal of secretions from the airway with a sterile suction catheter. Both have limitations - antibiotics can favour the growth of resistant bacteria, and catheter suctioning is uncomfortable and may injure the airway. PIRÁMIDES is a small (60-patient) pilot study that compares the current practice with two non-invasive, mechanical alternatives for keeping the airway clear: a continuous low-pressure suction system built into a special breathing tube, and a device that produces a gentle, programmed "artificial cough" through the ventilator. Adult patients who are intubated for severe trauma, severe brain injury, stroke, resuscitated cardiac arrest or other causes of decreased consciousness are randomly assigned, in equal numbers, to one of the three approaches and followed for 14 days, with a final visit at day 90. The main goal is to find out which of the three strategies best prevents early pneumonia, and which provides the best overall result for patients when survival, severity of infection, need for additional antibiotics and side effects are considered together. To make these comparisons as fair as possible in an open-label study, an independent committee of doctors not involved in patient care reviews each suspected pneumonia case without knowing which strategy the patient received. The results will help design a larger trial to confirm which approach is safest and most effective for preventing early pneumonia in critically ill patients on a ventilator.

The use of mechanical insufflation-exsufflation (MI-E) in children with neuromuscular diseases (NMD) is recommended by international guidelines and societies and well documented. Many authors have shown that MI-E is safe and effective for airway clearance and has a significant benefit in reducing the duration of the airway clearance session in children with respiratory infections and atelectasis or in the postoperative period. However, its use in paediatrics is still poorly supervised and learning the technique is too often therapist- and/or patient-dependent. The use of a protocol or means of help to guide the initiation and learning of MI-E would allow better use, better adaptation of the settings and potentially better compliance with the treatment. The aim of this study is to test whether the use of a coaching module (playful visual stimulation) in addition to guidance by a physiotherapist improves the learning and effectiveness of the technique compared to guidance alone.This randomized controlled study will first include healthy children, aged 6 to 12 years, with no history or recent respiratory infection affecting lung function or other chronic diseases. In a second phase, the investigators will test the use of the learning process in children with neuromuscular diseases. The investigators hope that the results of this study will provide a better framework for the learning and effectiveness of MI-E. Furthermore, if the results are positive, this will allow better support for the use of MI-E in chronic treatments and help to ensure that this costly treatment for hospitals and public health is used efficiently.

This pilot study aims to compare the ability of a higher oscillatory index device versus a lower oscillatory index device on airway secretion clearance and other clinically significant outcomes.

Every year, approximately 10-15 patients are admitted to the general intensive care unit at our institution who have been intubated for airway protection for various reasons, the main ones being soft tissue infection of the head/neck, anaphylaxis with airway edema, oral and maxillofacial/ENT surgery with airway threat, and head/neck injury with airway threat. Some patients are successfully extubated after the acute condition that caused the need for ventilation in the first place has passed, and some require tracheostomy for reasons related to the primary disease (unresolved edema, continued infectious process, need for additional invasive interventions, etc.) or for reasons related to difficulty in respiratory weaning (poor awakening, muscle weakness, development of respiratory infection, etc.). We would like to examine whether it is possible to characterize certain parameters in the above patient population that are associated with a higher likelihood of requiring tracheostomy during hospitalization (such as age Adult). In these cases, we may consider performing the tracheostomy earlier.

Everywhere in the world, life expectancy is increasing. Currently, most individuals can expect to live up to 60 years and beyond. In all countries, the number and proportion of older adult in the population are rising. By 2030, one in six people in the world will be 60 years old or older. France is also seeing its population age, with the number of older people increasing from 14% in 2014 to 21% in 2022. In 2018, elderly people accounted for 30% of short-stay hospitalizations. One of the most common causes of hospitalization for older adult is respiratory system pathologies, second only to cardiovascular system pathologies. Admission for a respiratory pathology is often associated with bronchial congestion. Infectious or viral pneumonia is often the terminal illness for the older adult. In the United States, 1 million old patients are hospitalized for this pathology, and 30% of them will die within the year. Old people are more susceptible to pneumonia due to several factors, including impaired gag reflex, reduced muco-ciliary function, weakened immunity, impaired fever response, and various degrees of cardiopulmonary dysfunction. Additionally, central nervous system disorders and/or impaired gag reflex increase the risk of aspiration pneumonia in old patients. The majority of these patients develop a productive cough, but unfortunately, their ability to cough effectively is often reduced. Aging leads to various changes in the respiratory system. The thoracic cage and spine deform due to calcification and osteoporosis, resulting in stiffness. The thoracic wall stiffens, making mobilization more difficult and increasing the muscular work required for expansion during inspiration. The diaphragm is in a less favorable position to contract effectively. Expiration becomes less efficient, leading to an increase in residual volume (RV) and promoting what is called "senile emphysema," where air spaces dilate and dead spaces increase. This leads to an increase in functional residual capacity and RV, reducing vital capacity. Additionally, respiratory muscles lose strength due to muscle atrophy and decreased fast-twitch fibers. These mechanisms can compromise ventilation, mucus clearance, and cough effectiveness, all essential for preventing bronchial congestion. The effectiveness of Mechanical Insufflation-Exsufflation (MI-E) in airway clearance has been demonstrated in children and adults with neuromuscular pathologies. Since the respiratory function of old people may be similar to that of patients with neuromuscular pathologies due to age-related loss of respiratory capacity and cough strength, it would be interesting to specifically study the use of MI-E in this population. Our previous study (ClinicalTrials.gov Identifier: NCT05090696) showed that old people tolerated MI-E well (low discomfort and no changes in vital signs). After the first session of bronchial clearance with MI-E, dyspnea decreased significantly (median Borg scale before session = 2.8 versus after = 1.8, p = 0.004). Additionally, cough strength increased across all sessions (mean pre = 130 vs. post = 145, p = 0.005). Following this initial study, the investigators wondered if the use of MI-E would be more effective than a session of manual physiotherapy.

The aim of the current study is to compare the effects of ventilator hyperinflation and vibrocompression on lung compliance in mechanically ventilated patients.