About this trial
Stroke-associated pneumonia is a common and clinically important complication after acute ischemic stroke, especially in non-intubated patients with impaired consciousness and reduced cough or swallowing reflexes. Conventional oral or nasal suction may be insufficient for removing deep oropharyngeal secretions. This prospective randomized controlled trial will evaluate whether a patented oropharyngeal flushing suction tube combined with direct laryngoscopy reduces the 28-day incidence of stroke-associated pneumonia compared with laryngoscope-guided standard suction and conventional oral/nasal suction.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Confirmed acute ischemic stroke by cranial CT or MRI.
Age 18 years or older.
Glasgow Coma Scale score of 6 to 12.
No artificial airway and no requirement for invasive mechanical ventilation at enrollment.
Disqualifiers
Existing artificial airway or invasive mechanical ventilation at ICU admission or screening.
Pre-existing pulmonary infection at enrollment, or definite extra-pulmonary organ or tissue infection during the study period.
Hemorrhagic blood disorder, clinically significant coagulopathy, or bleeding risk precluding laryngoscopy.
Oral or maxillofacial deformity impeding laryngoscope insertion.
Trial design
Parallel
Treatments tested in this trial
Oropharyngeal Flushing Suction Tube
DeviceA patented single-use dual-lumen suction tube designed for simultaneous irrigation and suction of oropharyngeal and deep pharyngeal secretions under direct laryngoscopic visualization. The device includes separate irrigation and suction lumens and allows sterile saline irrigation with simultaneous suction when secretions are tenacious.
Laryngoscope-Guided Oropharyngeal Suction
Procedure/SurgeryDirect laryngoscopy is used to visualize the oropharyngeal and glottic area and guide targeted suctioning of oropharyngeal and deep pharyngeal secretions.
Standard Suction Catheter
DeviceA conventional single-lumen suction catheter used for oropharyngeal or airway secretion suctioning according to routine clinical practice.
Conventional Oral or Nasal Suction
Procedure/SurgeryBlind oral and/or nasal suctioning performed with a standard suction catheter according to routine clinical practice, without direct laryngoscopic visualization and without use of the oropharyngeal flushing suction tube.
Treatment groups
Trial outcomes
Primary outcomes
Incidence of Stroke-Associated Pneumonia Within 28 Days
Proportion of participants who meet diagnostic criteria for stroke-associated pneumonia within 28 days after enrollment, adjudicated by blinded outcome assessors using clinical findings, laboratory data, and serial chest imaging.
Secondary outcomes
28-Day All-Cause Mortality
Proportion of participants who die from any cause within 28 days after enrollment.
Artificial Airway Establishment or Invasive Mechanical Ventilation
Proportion of participants requiring endotracheal intubation, tracheostomy, and/or invasive mechanical ventilation due to respiratory failure or airway protection within 28 days after enrollment.
White Blood Cell Count Over Time
Serial white blood cell count values and changes from baseline.
High-Sensitivity C-Reactive Protein Over Time
Serial high-sensitivity C-reactive protein values and changes from baseline.
Sponsors and contacts
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