Αποτελέσματα Αναζήτησης
1 Δεκ 2022 · Under physiological conditions, the transpulmonary pressure (the difference between alveolar and intrapleural pressures) is always positive; while intrapleural pressure is always negative. When the glottis is open and no air flows through the lungs, alveolar pressure equals atmospheric pressure.
First, the negative pleural pressure (oesophageal pressure (P oes)) increases, leading to an earlier closure of the small airways with consequent reduction of functional residual capacity (FRC) and expiratory reserve volume (ERV) [1, 3, 4, 7].
24 Φεβ 2022 · Pleural effusion is defined as an accumulation of fluid within the pleural space , and is estimated to occur in 1 of 15,000 pregnancies. 70 It can arise because of a number of different conditions such as infection or CHD, all with the potential to culminate in abnormalities in lung growth. A large pleural effusion can act as a space-occupying ...
Airway closure occurs when pleural pressure exceeds airway pressure (ie, transpulmonary pressure is negative). Airway closure during tidal breathing occurs when the closing volume is greater than end-expiratory lung volume or closing capacity is greater than FRC.
5 Οκτ 2023 · The increased blood volume and reduced colloid osmotic pressure that occur in pregnancy and the impaired lymphatic drainage due to Valsalva maneuvers during pregnancy cause pleural effusion....
Pulmonary Disorders in Pregnancy. Pregnancy is associated with some profound changes in the cardiovascular, respiratory, immune, and hematologic systems that impact the clinical presentation of respiratory disorders, their implications in pregnancy, and the decisions to treat.
Blood pressure differential between arms of >20 mm (performance may be better in pregnant women who generally don't have substantial underlying vascular disease). EKG may show occlusive myocardial infarction (if dissection involves a coronary artery).
