Postoperative changes in regional pulmonary blood flow
نویسندگان
چکیده
منابع مشابه
Regional Pulmonary Blood Flow
unteers were studied, nine sitting and seven supine. During hypoxia there was a slight but significant increase in relative perfusion of the upper portions of the lungs in both the sitting and supine subjects. During recovery from hypoxia, blood flow distribution differed significantly from the control. The erect subjects showed increased relative perfusion of the lung bases and the supine subj...
متن کاملRegional pulmonary blood flow in patients with circulatory shunts.
Carbon dioxide labelled with oxygen-15 can be used to compare the blood flow in different regions of the lung. Results obtained with this technique in normal subjects at rest with the chest upright show that there is a much higher perfusion per unit of alveolar volume in the lower zone than in the upper zone. On moderate exercise the flow increases in both zones but the lower zone blood flow re...
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BACKGROUND Previous studies have suggested that pulmonary embolism (PE) and pulmonary artery occlusion result in a shift in alveolar ventilation away from unperfused regions. This study aimed to directly assess changes in regional specific ventilation (sV(A)) due to autologous blood clot PE using positron emission tomography. METHODS Pulmonary embolism was created in six anesthetized, paralyz...
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چکیده ندارد.
15 صفحه اولCT-based assessment of regional pulmonary microvascular blood flow parameters.
To determine regional pulmonary microvascular mean transit times (MTTs), we used electrocardiogram-gated X-ray computed tomographic imaging to follow bolus radiopaque contrast material through the lungs in anesthetized animals (7 dogs and 1 pig, prone and supine). By deconvolution/reconvolution of regional time-attenuation curves obtained from parenchyma and large lobar arteries, we estimated t...
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ژورنال
عنوان ژورنال: The Journal of Thoracic and Cardiovascular Surgery
سال: 1967
ISSN: 0022-5223
DOI: 10.1016/s0022-5223(19)43241-8