1986
DOI: 10.1111/j.1399-6576.1986.tb02408.x
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Abstract: In previous studied with computed tomography (CT) prior to and during general anaesthesia, we found that densities developed in dependent parts of the lungs immediately after induction of anaesthesia in all examined patients. It was suggested that the densities were atelectases created by compression of lung tissue but an alternative explanation could be accumulation of extravascular fluid in the lung tissue and/or in the pleural space. In the present study the nature of the densities was analysed in further d… Show more

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Cited by 34 publications
(19 citation statements)
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“…Once anaesthesia is induced the inward movement of the chest wall and the cephalad movement of the diaphragm will alter the relationship between pressure at the mouth and the balloon catheter in its set position. If atelectasis starts to occur this will produce additional local pressure transmission problems [35].…”
Section: Discussionmentioning
confidence: 99%
“…Once anaesthesia is induced the inward movement of the chest wall and the cephalad movement of the diaphragm will alter the relationship between pressure at the mouth and the balloon catheter in its set position. If atelectasis starts to occur this will produce additional local pressure transmission problems [35].…”
Section: Discussionmentioning
confidence: 99%
“…Hence the observed reduced total respiratory compliance in these patients must represent abnormally low lung compliance. Such increased lung stiffness is well-recognized (Nunn, 1987) and may reflect altered pulmonary surfactant (Woo, Berlin & Hedley-Whyte, 1969) or dependent atelectasis which has been shown (using computed tomography) to occur early during ventilation in humans (Strandberg, Hedenstierna, Tokics, Lundquist & Brismar, 1986). This would result in an increased pressure gradient between the alveoli and the pleural space rather than increased pleural pressure relative to atmospheric pressure (as would occur with reduced chest wall compliance).…”
Section: Current Workmentioning
confidence: 99%
“…The densities occur in the lung tissue proper. 26 The densities do not appear after ketamine induction, which does not reduce FRC, but do appear after muscle paralysis, z7 They occur in the most dependent portion of the lungs and move to the lowermost lung zones following changes in posture. 25 These observations support the proposal that the densities represent "compression" atelectasis, particularly since the magnitude correlates best with indices of obesity.…”
Section: Atelectasismentioning
confidence: 99%