Observe the current status of prolonged mechanical ventilation (PMV) patients using high-flow nasal cannula oxygen therapy (experimental group) or traditional oxygen therapy (control group) after extubation, and compare the differences in ventilator weaning rates between the two groups. Record the ROX index (SpO2/FiO2/RR) at 2, 6, 12, and 24 hours after extubation in PMV patients and explore whether statistical methods can predict the weaning outcome within seven days. Use statistical methods to analyze whether comorbidities in the PMV population affect ventilator weaning rates.
Study Type
OBSERVATIONAL
Enrollment
110
Kaohsiung Chang Gung Memorial Hospital
Kaohsiung City, Taiwan
ROX index
The oxygen concentration used before and after oxygen therapy adjustment is recorded as percent, accompanied by clinical and physiological parameter the patient's oxygen saturation (SpO₂) and respiratory rate (breaths per minute). Additionally, multiple measurements of the ROX index are performed, combining saturation (SpO₂), FiO₂, and respiratory rate to calculate and report the ROX index (SpO₂ / FiO₂ / RR).
Time frame: From enrollment to preliminary data compilation, lasting a total of 4 months.
P/F ratio
Collect the arterial oxygen partial pressure (PaO₂, mmHg) from each patient's clinical arterial blood dialysis, and compare it with the oxygen concentration (%) being used at the time. The two values are then combined to calculate the P/F ratio (PaO₂, mmHg / FiO₂, decimal).
Time frame: From enrollment to preliminary data compilation, lasting a total of 4 months.
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