Dead Space in ARDS: Die Hard
نویسندگان
چکیده
منابع مشابه
Microcirculatory alterations are associated with pulmonary dead-space fraction in moderate and severe ards
Introduction Shunt-induced hypoxemia is considered the primary pathophysiological abnormality and main diagnostic criteria of acute respiratory distress syndrome (ARDS). However, increases in dead-space ventilation (VD/VT) can also contribute to gas exchange alterations in ARDS. Systemic microcirculatory alterations described during inflammatory conditions are characterized by perfusion heterog...
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BACKGROUND Elevated dead space fraction (the ratio of dead space to tidal volume [V(D)/V(T)]) is a feature of ARDS. PEEP can partially reverse atelectasis, prevent alveoli recollapse, and improve lung compliance and gas exchange in patients with ARDS. However, whether V(D)/V(T) variables have a close relationship with PEEP and collapse alveolar recruitment remains under recognized. Meanwhile, f...
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متن کاملCorrection for mechanical dead space in the calculation of physiological dead space.
When physiological dead space (Vd(p)) is calculated for a patient who has alveolar dead space, e.g., after pulmonary vascular occlusion, less than the full volume of attached mechanical dead space (Vd(m)) appears in the measured dead space (Vd(n)). Under these conditions the traditional subtraction of Vd(m) from Vd(n) leads to underestimation of Vd(p) and can give a falsely small ratio of Vd(p)...
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ژورنال
عنوان ژورنال: Respiratory Care
سال: 2017
ISSN: 0020-1324,1943-3654
DOI: 10.4187/respcare.05842