Open Access Editorial Article ID: GJA-2-116

    Structural Differences in Respiratory System and Airway of Parturients

    Ayten Saracoglu*

    Oxygen consumption increases with increased alveolar ventilation and respiratory alkalosis occurs. Thus, PaCO2 becomes 28-32 mmHg in pregnant women, and this amount is compensated with renal bicarbonate absorption. Preoxygenation can be made slower by inhalation of 100% oxygen for 2-5 minutes.  Denitrogenation of the lungs occurs after three minutes [1]. Another method can be applied quickly with 4-8 deep breaths of 100% oxygen [2]. However, for pregnant women who will have a cesarean section under  general anesthesia, an oxygen fraction of 1 has been shown to increase fetal oxygenation more compared with the 0.3 or 0.5 FiO2 [3]. As this may lead to free oxygen radicals and apsorbtion atalectesia, 80 %  oxygen is recommended.


    Published on: Oct 15, 2015 Pages: 52-52

    Full Text PDF Full Text HTML DOI: 10.17352/2455-3476.000016
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