NHẬN XÉT ĐẶC ĐIỂM CÁC CHỈ SỐ CỦA PHƯƠNG PHÁP ĐO KHÍ MÁU KHÔNG XÂM LẤN Ở BỆNH NHÂN VIÊM PHỔI MẮC PHẢI CỘNG ĐỒNG TẠI TRUNG TÂM CẤP CỨU A9

Abstract

Objective: To describe noninvasive blood gas parameters in patients with community-acquired pneumonia at the A9 Emergency Center and compare them with invasive arterial blood gas measurements. Study Population: All patients over 18 years old diagnosed with community-acquired pneumonia at the A9 Emergency Center according to the 2019 ATS/IDSA criteria. Methods: A prospective descriptive controlled study conducted from February 2025 to August 2025 at the A9 Emergency Center. Noninvasive parameters (gPaO₂, gPaO₂/FiO₂, PETCO₂, and O₂ Deficit) were measured using the MediPines AGM100 device. Invasive parameters (PaO₂, PaO₂/FiO₂, PaCO₂, and A-aDO₂) were obtained from arterial blood gas analysis. Results: A total of 57 patients were included. Correlations were observed between the parameter pairs gPaO₂–PaO₂, gPaO₂/FiO₂–PaO₂/FiO₂, and O₂ Deficit–A-aDO₂, with R² values of 0.409, 0.412, and 0.512, respectively. A statistically significant difference was found between PETCO₂ and PaCO₂ (p < 0.001). The duration of noninvasive blood gas measurement was longer in non-intubated patients compared with intubated patients, but the difference was not statistically significant (p = 0.75). Conclusion: Noninvasive blood gas parameters demonstrated moderate correlations with arterial blood gas measurements and show potential utility in assessing patients with community-acquired pneumonia in the emergency department.