Aslıhan GÜRÜN KAYA, Elvan Burak VERDİ, Sema Nur SÜSLÜ, Miraç ÖZ, Serhat EROL, Fatma ÇİFTÇİ, Aydın ÇİLEDAĞ, Akın KAYA

Can diaphragm excursion predict prognosis in patients with severe pneumonia?

Can diaphragm excursion predict prognosis in patients with severe pneumonia? Introduction: Although thorax ultrasound has been used to diagnose pneumonia in recent years, the role of ultrasonic diaphragm evaluation in the prognosis of pneumonia is unknown. This study aimed to assess the impact of diaphragmatic excursion (Dex) measured by ultrasound on the prognosis of severe pneumonia in critical care patients. Materials and Methods: We prospectively recruited patients with severe pneumonia who were admitted to the intensive care unit (ICU) between January 2019 and July 2021. Patients’ Dex values, vital signs, clinical features, laboratory parameters, APACHE-II scores on the first admission day of ICU, mortality and respiratory support status at follow-up were recorded. Results: There were 39 patients enrolled in the study. Mean Dex of the study patients was 30.66 ± 12.17 mm. Mean Dex was significantly lower in deceased patients than survivors (18.37 ± 8.12 vs 34.90 ± 10.36 p< 0.001). Dex was lower in patients who required invasive mechanical ventilation than those not (24.90 ± 10.93 vs 34.26 ± 11.70, p= 0.017). The cut-off value of Dex was found 19.0 mm for significantly predicted (p≤ 0.001) survival with the sensitivity of 96.6% and specificity of 70%. Among the study group, diaphragm excursion was negatively correlated with APACHE-II score (r= -0.688, p≤ 0.001) and respiratory rate (r= -0.531, p= 0.001). Conclusion: Dex measured on the day of ICU admission can be used to evaluate the prognosis of patients with severe pneumonia.

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