Use of the Pao(2)/Fio(2) Ratio in Pulmonary Embolism: Evaluation of its Correlation with Pulmonary Arterial Computed Tomography Obstruction Index.

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Tortum F., Tekin E., Gur A., Kerget B., Kasali K.

Academic radiology, cilt.30, sa.5, ss.893-899, 2023 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 30 Sayı: 5
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1016/j.acra.2022.06.004
  • Dergi Adı: Academic radiology
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, CINAHL, EMBASE, MEDLINE
  • Sayfa Sayıları: ss.893-899
  • Anahtar Kelimeler: PaO₂ /FiO₂ Acute pulmonary embolism, PaO₂ /FiO₂ ratio, Partial oxygen pressure, Pulmonary arterial computed tomography obstruction index ratio
  • Atatürk Üniversitesi Adresli: Evet

Özet

Rationale and Objectives: The pulmonary arterial computed tomography obstruction index ratio (PACTOIR) is a parameter that provides an idea of the clinical severity of acute pulmonary embolism (APE). This study aimed to examine the correlation between the PaO₂ /FiO₂ ratio and PACTOIR in patients who presented to the emergency department and received a preliminary diagnosis of APE. Materials and Methods: This study was conducted prospectively in the emergency department. The patients’ sociodemographic characteristics, vital signs, PACTOIR, and PaO₂ /FiO₂ ratio were obtained. The correlation between PACTOIR and PaO₂ /FiO₂ ratio was then statistically evaluated. Results: The study included 50 patients, of whom 31 (62%) were women, and 19(38%) were men. The female patients had a PaO₂ /FiO₂ ratio of 209 § 67 and PACTOIR of 36.3 § 15.5. The male patients had a PaO₂ /FiO₂ ratio of 169 § 43 and PACTOIR of 39.7 § 19. The PaO₂ /FiO₂ ratio of the patients with APE was negatively correlated with the PACTOIR value at a statistically significant level (r = - 0.308, p = 0.031). The regression equation was as follows: PACTOIR = (-0.0869) x (PaO₂ / FiO₂) + (54.489). Conclusion: By calculating the PaO₂ /FiO₂ ratio in patients with APE, the degree of pulmonary artery obstruction and clinical severity can be predicted. Therefore, the ratio PaO₂ /FiO₂ can be used instead of PACTOIR.