Alveolar dead space comprises alveoli which are ventilated, but not supplied by the pulmonary arterial circulation, or alveoli which are atelectatic. The anatomical dead space is the total volume of the conducting airways from the nose or mouth to the terminal bronchioles, and in ventilated infants includes the apparatus dead space (endotracheal tube and flow sensor). The physiological dead space is the anatomical dead space plus alveolar dead space. 4, 5Īn important influence on the appropriate size of the delivered volume during mechanical ventilation is the size of the dead space, the volume of inhaled gas that does not take part in gas exchange. 3 Inappropriately small tidal volumes can be associated with a prolonged duration of mechanical ventilation, a pro-inflammatory state and an increased work of breathing.
2 Delivery of inappropriately large tidal volumes can lead to alveolar over-distension and development of chronic respiratory morbidity. 1 Use of volume-targeted ventilation is a lung protective strategy as it potentially avoids too high or too low delivered volumes. Top Rated TV Programs: 2012 - 2013 Program Rating NCIS 21.6 Sunday Night Football 21.0 The Big Bang Theory 19.0 NCIS: Los Angeles 17.5 Person of Interest 16.2 American Idol (Wednesday) 15.1 Dancing With the Stars (Monday) 15.0 American Idol (Thursday) 14.8 The Voice (Monday) 14.4 The Walking Dead 14.3 Dancing With the Stars (Tuesday) 14.0 Two and a Half Men 13.9 The Voice (Tuesday) 13.5 Blue Bloods 13.3 Elementary 13.3 Top Rated TV Programs: 2015 - 2016 Program Rating NFL Sunday Night Football 22.0 The Big Bang Theory 20.6 NCIS 20.5 The Walking Dead 18.9 NFL Thursday Night Football 17.7 Empire 16.2 NCIS: New Orleans 16.1 Blue Bloods 14.6 Dancing With the Stars 13.7 The X-Files 13.6 The Voice (Monday) 13.5 Scorpion 13.3 The Voice (Tuesday) 13.2 Little Big Shots 13.0 NFL Monday Night Football 12.9 \begin c.Newborn infants often require respiratory support with invasive mechanical ventilation, unfortunately such infants can develop chronic respiratory morbidity.
The numbers of viewers include those who watched the program on any platform, including time-shifting up to seven days after the original telecast.
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