A-a Gradient

normal range: 5-10 mmHg

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normal range: 5-10 mmHg

mm Hg
mm Hg
mm Hg

References

  1. Kazuma Nagata. Trajectory of the arterial-alveolar oxygen gradient in COPD for a decade.. PloS one, 2025
  2. Ana Maslac. Diagnostic Value of the Alveolar–Arterial Oxygen Gradient in Pulmonary Embolism: A Cross-Sectional Study. Healthcare, 2024
  3. Baoxi Zhao. Alveolar-arterial oxygen gradient: An early marker to predict the severity of community-acquired pneumonia in children. Medicine, 2024
  4. M. Matthay. A New Global Definition of Acute Respiratory Distress Syndrome. American Journal of Respiratory and Critical Care Medicine, 2023
  5. Canbin Xie. The Association Between Alveolar–Arterial Oxygen Tension Difference and the Severity of COVID-19 in Patients. Infectious Diseases and Therapy, 2023
  6. Ying Wang. Alveolar–arterial oxygen gradient nonlinearly impacts the 28‐day mortality of patients with sepsis: Secondary data mining based on the MIMIC‐IV database. The Clinical Respiratory Journal, 2023
  7. G. Pipitone. Alveolar–Arterial Gradient Is an Early Marker to Predict Severe Pneumonia in COVID-19 Patients. Infectious Disease Reports, 2022
  8. Stavros V Konstantinides. 2019 ESC Guidelines for the diagnosis and management of acute pulmonary embolism developed in collaboration with the European Respiratory Society (ERS).. European heart journal, 2020
  9. Karen K Stout. 2018 AHA/ACC Guideline for the Management of Adults With Congenital Heart Disease: A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines.. Circulation, 2019
  10. C. Riley. Diagnosis and Outpatient Management of Chronic Obstructive Pulmonary Disease: A Review. JAMA, 2019
  11. K. Forde. Pulse Oximetry Is Insensitive for Detection of Hepatopulmonary Syndrome in Patients Evaluated for Liver Transplantation. Hepatology, 2018
  12. P. Radermacher. Fifty Years of Research in ARDS. Gas Exchange in Acute Respiratory Distress Syndrome.. American journal of respiratory and critical care medicine, 2017
  13. Amany F. Elbehairy. Pulmonary Gas Exchange Abnormalities in Mild Chronic Obstructive Pulmonary Disease. Implications for Dyspnea and Exercise Intolerance.. American journal of respiratory and critical care medicine, 2015
  14. J. Petersson. Gas exchange and ventilation–perfusion relationships in the lung. European Respiratory Journal, 2014
  15. P. Wagner. The physiological basis of pulmonary gas exchange: implications for clinical interpretation of arterial blood gases. European Respiratory Journal, 2014
  16. P. Stein. Alveolar-arterial oxygen gradient in the assessment of acute pulmonary embolism.. Chest, 1995
  17. E. A. Harris. The normal alveolar-arterial oxygen-tension gradient in man.. Clinical science and molecular medicine, 1974