CT-Assessment of Dependent Lung Densities in Man during General Anaesthesia

Acta Radiologica - Tập 36 Số 4-6 - Trang 626-632 - 1995
H. Lundquist1, Göran Hedenstierna2, Anna K. Strandberg3, L. Tokics3, B Brismar4
1Department of Radiology, Huddinge University Hospital, Huddinge
24 Department of Clinical Physiology, University Hospital, Uppsala, Sweden
32 Department of Anaesthesiology, Huddinge University Hospital, Huddinge
43 Department of Surgery, Huddinge University Hospital, Huddinge

Tóm tắt

Purpose: We aimed to describe the frequency of atelectasis occurring during anaesthesia, to describe the size and pattern of the atelectasis, and to standardise the method of identifying the atelectasis and calculate its area. Material and Methods: Patients (n=109) scheduled for elective abdominal surgery were examined with CT of the thorax during anaesthesia. Results: In 95 patients (87%) dependent pulmonary densities were seen, interpreted as atelectasis. Two different types of atelectasis were found — Homogeneous (78%) and non-homogeneous (9%). Attenuation values in histograms of the lung and atelectasis were studied using 2 methods of calculating the atelectatic area. Conclusion: On the basis of the present findings, we defined atelectasis as pulmonary dependent densities with attenuation values of —100 to +100 HU.

Từ khóa


Tài liệu tham khảo

10.1016/S0140-6736(86)90837-8

10.1097/00000542-198504000-00009

10.1007/BF01464308

10.1097/00000542-198002000-00004

10.1093/bja/66.4.423

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Marthaler A., 1978, Clinical biochemistry. Principles and methods, 570

10.1111/j.1399-6576.1986.tb02408.x

Tokics L., 1988, CT and lung function measurements. J. Appl. Physiol., 64, 599

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Thông tin xuất bản

Acta Radiologica

Tập 36 Số 4-6

626-632

Thông tin tác giả