Thickness and pressure of the pleural liquid in some mammals☆
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Cited by (32)
Anatomy of the Lungs
2015, Murray and Nadel's Textbook of Respiratory Medicine: Volume 1,2, Sixth EditionMixed lubrication after rewetting of blotted pleural mesothelium
2013, Respiratory Physiology and NeurobiologyCitation Excerpt :This point deserves a comment. The thickness of the pleural space has been measured in various species by reflex light microscope on quick frozen chest (Agostoni et al., 1968, 1969). The space appeared as a dark band between lung and chest wall because it does not reflect the light of the microscope; its width was similar in the superior and dependent regions, and increased markedly at bottom when a small volume of isotonic saline was injected into the space before freezing.
Influence of the softness of the parietal pleura on respiratory sliding mechanisms
2011, Respiratory Physiology and NeurobiologyCitation Excerpt :We believe this is the first measurement of the surface topography of the parietal pleura using physical contact, i.e. force detection. Previously, the morphology of the unfixed pleura has been acquired mostly using 3-D fluorescent microscopy in liquid or by microscopy of the cut surface of frozen lung and chest wall (Agostoni et al., 1969; Lin et al., 2008). In the fluorescent microscopic studies, the contrasting dye may accumulate in materials or structural components that extend above the surface, such as the glycocalyx layer or microvilli, making the surface appear rougher than it would be mechanically.
Pleural liquid and its exchanges
2007, Respiratory Physiology and NeurobiologyCitation Excerpt :These measurements showed that Pliq at functional residual capacity (FRC) is more subatmospheric than the pressure exerted by lung recoil (pleural surface pressure, Ppl) at iso-height, and that this difference increases with the increase in lung volume (for literature see Agostoni, 1986; Agostoni and D’Angelo, 1991). It has been argued that the more subatmospheric value of Pliq is due to the deformation caused by the cannula (Lai-Fook and Rodarte, 1991); this obviously occurs, but its effect in the costal region should be negligible because similar values of Pliq have been found without introduction of any device into the pleural space (intercostal capsule method, Agostoni et al., 1969a,b), with a micropipette (Miserocchi et al., 1988) or with the capsule used to measure Ppl (see below; Agostoni et al., 1989a, 1989b). At FRC a vertical gradient of Pliq of ∼1 cm H2O cm−1 has been found with cannulas in dogs, cats, rabbits, and rams (for literature see Agostoni and D’Angelo, 1991).
Pleural liquid during hemorrhagic hypotension
2007, Respiratory Physiology and NeurobiologyCitation Excerpt :Protein concentration in pleural liquid at the end of 30 min experiment with hemorrhage was not significantly greater than that of control experiments (Table 3), and that of liquid collected just after anesthesia (Miserocchi and Agostoni, 1971; Sahn et al., 1979) Moreover, the percentage of albumin and globulin was also similar with and without hemorrhage (Table 3), and similar to that of liquid collected just after anesthesia (Miserocchi and Agostoni, 1971). End-expiratory pleural liquid pressure in the upper region of the superior hemithorax at the beginning of the experiment with hemorrhage was −5.0 ± 0.5 cmH2O (N = 5), in line with previous data in rabbits (Agostoni et al., 1969). This value did not change significantly during the experiment.
Pleural Manometry
2006, Clinics in Chest Medicine
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This research has been sponsored in part by the USAF School of Aerospace Medicine through the European Office of Aerospace Research (OAR) United States Air Force under contract F 61052 67 C 0053 and in part by the Italian National Research Council.