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Open research questions in Respiratory Support and Mechanisms

256 unresolved questions extracted from the limitations and future-work sections of 833 Respiratory Support and Mechanisms papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Further studies are warranted to validate and standardize the use of LUSS cutoff, - Research on THRIVE in non-intubated endoscopic anesthesia is limited

    Effect of transnasal humidified rapid insufflation ventilator exchange on early postoperative atelectasis in patients undergoing prolonged non-intubated anesthesia: a randomized clinical trial · 2026 · DOI

  • Limited evidence on the use of THRIVE in non-intubated endoscopic anesthesia. Prior studies have focused on patients undergoing tracheal intubation under general anesthesia. The need for effective perioperative interventions to prevent atelectasis in patients undergoing prolonged non-intubated anesthesia.

    Effect of transnasal humidified rapid insufflation ventilator exchange on early postoperative atelectasis in patients undergoing prolonged non-intubated anesthesia: a randomized clinical trial · 2026 · DOI

  • The paper identifies a gap in understanding mortality trends and demographic disparities of aspiration-associated respiratory failure. There is a need for improved dysphagia prevention and targeted public health interventions.

    Mortality trends of aspiration-associated respiratory failure in the united states : a multiple cause of death analysis · 2026 · DOI

  • Postoperative respiratory dysfunction is a significant problem after cardiac surgery. The available evidence on vibroacoustic pulmonary therapy is limited and heterogeneous. Treatment allocation was non-randomized and was primarily determined by centre-level availability of the VibroLUNG device.

    Vibroacoustic lung therapy and early postoperative oxygenation after cardiac surgery: a multicentre prospective study · 2026 · DOI

  • Clinical evidence on vibroacoustic pulmonary therapy in adult cardiac surgery patients remains limited. The available evidence is heterogeneous with respect to patient populations, intervention protocols, and measured outcomes.

    Vibroacoustic lung therapy and early postoperative oxygenation after cardiac surgery: a multicentre prospective study · 2026 · DOI

  • Further studies are needed to explore the sources of heterogeneity, - Studies should investigate the long-term effects of early mobilization on patients with ARDS, - Research should focus on the optimal timing and intensity of early mobilization

    Efficacy and safety of early mobilization in patients with ARDS: a systematic review and meta-analysis · 2026 · DOI

  • The efficacy and safety of early mobilization in ARDS patients is not well established. There is a lack of systematic reviews and meta-analyses on the effect of early mobilization in ARDS patients. The impact of early mobilization on the incidence of ICU-acquired weakness and the duration of mechanical ventilation is not well understood.

    Efficacy and safety of early mobilization in patients with ARDS: a systematic review and meta-analysis · 2026 · DOI

  • However, the biological basis of this heightened vulnerability remains insufficiently synthesized.

    Mechanisms related to increased susceptibility of the elderly lung to ventilator-induced lung injury: A scoping review · 2026 · DOI

  • Conclusions Considerable variability exists in MV education across both training systems, with persistent gaps in understanding of fundamental ventilatory concepts.

    Variability in invasive mechanical ventilation education across two European paediatric intensive care training systems · 2026 · DOI

  • The progression of acute respiratory distress syndrome (ARDS) from its onset due to disease or trauma to either recovery or death is poorly understood.

    Mechanical ventilation energy analysis: Recruitment focuses injurious power in the ventilated lung · 2025 · DOI

  • However, how TLR4 facilitates interactions between innate immune cells and lung parenchymal cells in sepsis remains to be fully understood.

    Roles of TLR4 in macrophage immunity and macrophage-pulmonary vascular/lymphatic endothelial cell interactions in sepsis · 2025 · DOI

  • However, the mechanisms underlying this age-specific advantage remain incompletely understood.

    Multi-omics analysis reveals distinct spatial compartmentalization of lung repair niches in pediatric ARDS · 2025 · DOI

  • However, the potential therapeutic effects of valsartan on lipopolysaccharide (LPS)-induced ALI remain unclear.

    Valsartan attenuates LPS-induced ALI by modulating NF-κB and MAPK pathways · 2024 · DOI

  • Introduction The outcomes of children undergoing mechanical ventilation (MV) in a Pediatric Intensive Care Unit (PICU) remain poorly characterized and increasing knowledge in this area may lead to strategies that improve care.

    Outcomes of patients supported by mechanical ventilation and their families two months after discharge from pediatric intensive care unit · 2024 · DOI

  • CONCLUSIONS: Daily monitoring of diaphragmatic function with bedside ultrasonography after initiation of MV is necessary in critically ill patients in PICU and the influences and risk factors of severe VIDD need to be further studied.

    Association of diaphragmatic dysfunction with duration of mechanical ventilation in patients in the pediatric intensive care unit: a prospective cohort study · 2024 · DOI

  • Introduction Systematic evaluation of long-term outcomes in survivors of H1N1 is still lacking.

    Long-term outcomes of survivors with influenza A H1N1 virus-induced severe pneumonia and ARDS: a single-center prospective cohort study · 2024 · DOI

  • Limited data (5 trials [n = 502]) revealed that patients who underwent automatic tube compensation/continuous positive airway pressure compared with PS SBTs had a significantly higher successful extubation rate (RR, 1.

    Spontaneous Breathing Trial Techniques for Extubating Adults and Children Who Are Critically Ill · 2024 · DOI

  • The ability of ventilatory ratio to reflect changes in alveolar ventilation when respiratory mechanics are modified remains unknown. The study aims to address this gap by evaluating the relationship between ventilatory ratio and alveolar ventilation in patients with ARDS.

    Physiological dissociation between ventilatory ratio and ventilatory efficiency in patients with ARDS · 2026 · DOI

  • The influence of innovative inspiratory pressure relief accessories on continuous positive airway pressure profiles has been evaluated in laboratory bench settings, but clinical validation of these devices across diverse patient anatomies and sleep stages during actual treatment is needed.

    Safety principles of lowering inspiratory pressure · 2026 · DOI

  • Treatment-emergent central sleep apnea resolution with lower inspiratory pressure has been documented, but the mechanistic pathways linking reduced IPAP to central apnea resolution—particularly regarding chemoreceptor sensitivity and ventilatory stability—require investigation using controlled laboratory protocols.

    Safety principles of lowering inspiratory pressure · 2026 · DOI

  • The current evidence on the effects of PEEP on ICP is conflicting. There is a need for further studies to investigate the effects of PEEP on ICP and PRx in ARDS patients. The mechanisms underlying the effects of PEEP on ICP are not fully understood.

    Positive end-expiratory pressure increases intracranial pressure but does not affect PRx, regardless of body position, in a porcine ARDS model · 2026 · DOI

  • Cerebral metabolism, inflammatory mediators, and neuronal electrical activity (EEG) were not measured; therefore, microcirculatory or metabolic disturbances cannot be excluded despite stable ICP, PRx, and brain tissue oxygenation.

    Positive end-expiratory pressure increases intracranial pressure but does not affect PRx, regardless of body position, in a porcine ARDS model · 2026 · DOI

  • There is a need for new approaches to support gas exchange while minimizing ventilator-induced lung injury (VILI) in patients with ARDS. Conventional mechanical ventilation has limitations, and alternative ventilation strategies are needed.

    Continuous-flow ventilation with VENTIJET in moderate ARDS: a pilot safety and feasibility study · 2026 · DOI

  • The study measured transpulmonary pressures and end-tidal CO₂ as surrogate markers of gas trapping and alveolar dynamics, but did not directly quantify alveolar deflation patterns or recruitment-derecruitment cycles; studies incorporating real-time pressure-volume curve analysis or dynamic compliance monitoring throughout the respiratory cycle during VENTIJET ventilation are needed.

    Continuous-flow ventilation with VENTIJET in moderate ARDS: a pilot safety and feasibility study · 2026 · DOI

  • Future research should focus on optimizing low-dose iNO strategies (timing, duration, withdrawal protocols) and exploring combinations with other lung-protective or anti-inflammatory therapies.

    Nitric oxide exacerbates systemic inflammation in adults with severe acute respiratory · 2026 · DOI

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256 open questions have been extracted from the limitations and future-work passages of 833 Respiratory Support and Mechanisms papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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