Use of Nasal Pressure to Assess Inspiratory Effort Under Different Oxygen Treatments
Recruiting now · Not applicable
Conditions studied: Critical Care, Inspiratory Effort
In brief
The aim of this study was to investigate the effects of different oxygen therapy modalities (including nasal cannula oxygen, mask oxygen and high-flow nasal cannula oxygen) on the correlation between Nasal Pressure and Esophageal Pressure by means of a prospective physiological study, to assess the dynamic changes of nasal pressure and esophageal pressure and their underlying mechanisms under different conditions of oxygen therapy, to analyse the effects of oxygen therapy parameters on the relationship between the two, and to explore the feasibility of nasal pressure as a non-invasive monitoring indicator, in order to replaceor supplement esophageal manometry in clinical practice, especially in patients with respiratory distress and instability.Meanwhile, this study will also evaluate the effects of different oxygen therapy modalities on patients' respiratory mechanics and comfort, provide a scientific basis for the clinical selection of individualised oxygen therapy regimens, and ultimately provide new physiological evidence for the management of oxygen therapy in patients with acute respiratory failure in the intensive care unit (ICU) and outside the ICU, promote the development of non-invasive monitoring technology, and improve the clinical prognosis and therapeutic experience of patients.
Key facts
- Study ID
- NCT06970990
- Run by
- Jian-Xin Zhou
- People needed
- 26
- Starts
- 2025-05-20
- Expected to finish
- 2025-12-30
- Last updated by the study team
- 2025-05-22
Who can join
Age: 18 and older. Sex: any. Healthy volunteers: not accepted.
You may qualify if…
- No mechanical ventilation required,Able to tolerate oxygen therapy via nasal cannula, standard face mask, or nasal high-flow oxygen therapy;
- Respiratory stability:Capable of spontaneous breathing with effective cough for secretion clearance.Oxygen saturation (SpO₂) > 90% or PaO₂/FiO₂ ≥ 150 mmHg when receiving nasal cannula oxygen at 3 L/min;
- Hemodynamic stability:Heart rate (HR) ≤ 120 bpm;Systolic blood pressure (SBP) 90-150 mmHg;No vasoactive medications OR norepinephrine dosage < 0.1-0.2 μg/kg·min (or equivalent doses of other vasoactive agents);
- Metabolic stability;
- Compliance with medical instructions.Able to follow prescribed tasks.Esophageal pressure monitoring catheter already in place;
- Patient or legal guardian agrees to participate and has signed the informed consent form.
You may not qualify if…
- Age < 18 years;
- Pregnancy;
- Hemodynamic instability:Mean arterial pressure (MAP) < 60 mmHg.Heart rate (HR) > 120 bpm or < 60 bpm;
- Respiratory instability:Respiratory rate (RR) > 35 bpm.Oxygen saturation (SpO₂) < 90%;
- Neuromuscular diseases or phrenic nerve injury;
- Recent trauma or surgery involving the trachea, esophagus, neck, or chest.Contraindications to esophageal catheter placement or inability to monitor esophageal pressure;
- Nasal obstruction or anatomical abnormalities:Complete nasal obstruction.Severe anatomical abnormalities (e.g., severe septal deviation, nasal polyps, or tumors) preventing catheter placement or compromising ventilation;
- High-risk craniofacial conditions:Severe facial trauma or skull base fracture with risk of catheter misplacement into the intracranial space.Active epistaxis or incomplete healing after nasal surgery;
- Bleeding risk:Severe coagulopathy.Esophageal/gastric varices or other conditions predisposing to hemorrhage.
Where it is running
- Beijing Shijitan Hospital — Beijing, Beijing Municipality, China (enrolling)
Full record on ClinicalTrials.gov
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