Abstract
Regional ventilation perfusion ratios have been computed in 44 patients with acute pulmonary embolism with a gamma-camera using Krypton 81m, a short-life radionuclide delivered by inhalation and infusion. This noninvasive technique is performed during tidal breathing and can be easily repeated. High V/Q's are detected in the embolic regions and low V/Q's in the nonembolic regions with a shift of the perfusion distribution towards these low values. This pattern disappears with recovery. This technique can be used in clinical practice for diagnostic purposes.
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Meignan, M., Harf, A. & Cinotti, L. Regional distribution of ventilation-perfusion ratios in acute pulmonary embolism. Intensive Care Med 10, 103–106 (1984). https://doi.org/10.1007/BF00297567
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DOI: https://doi.org/10.1007/BF00297567