Dead-space or dead-end: Can prolonged mechanical ventilation be predicted in all children after unifocalization?
نویسندگان
چکیده
منابع مشابه
Anatomic dead space cannot be predicted by body weight.
BACKGROUND Anatomic dead space (also called airway or tracheal dead space) is the part of the tidal volume that does not participate in gas exchange. Some contemporary ventilation protocols, such as the Acute Respiratory Distress Syndrome Network protocol, call for smaller tidal volumes than were traditionally delivered. With smaller tidal volumes, the percentage of each delivered breath that i...
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BACKGROUND Chronic obstructive pulmonary disease (COPD) is a condition in which there is limited airflow during expiration (exhaling, or breathing out) that is not fully reversible and usually worsens over time. The disease is estimated to kill more than 100,000 Americans each year, and costs related to care of patients with COPD are significant. Physiologically, COPD represents a disruption in...
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An elevated physiological dead space, calculated from measurements of arterial CO2 and mixed expired CO2, has proven to be a useful clinical marker of prognosis both for patients with acute respiratory distress syndrome and for patients with severe heart failure. Although a frequently cited explanation for an elevated dead space measurement has been the development of alveolar regions receiving...
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Philosophers from antiquity onwards have asked whether we are harmed by death itself [1,2]. My question is different. I want to know whether we can be harmed by further events that happen after we are dead. While connected, the two questions are clearly distinct. Someone might think that death is normally a very bad thing for the deceased, yet hold that, once you are gone, you are beyond the re...
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: The Journal of Thoracic and Cardiovascular Surgery
سال: 2018
ISSN: 0022-5223
DOI: 10.1016/j.jtcvs.2018.05.033