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Understanding Anesthetic Equipment & Procedures: A Practical Approach
by Dwarkadas K Baheti, Vandana V LaheriAn appropriate size face mask is important for a tight seal on the patient’s face allowing good mask ventilation. An ill-fitting mask will demand more pressure on patient’s face leading to cramps in the hands of the user after some time. An inadequate seal will cause air dilution during spontaneous respiration and inadequate gas exchange during controlled ventilation. This may lead to awareness in spontaneously breathing patients due to air dilution, hypoxia or hypercarbia due to inadequate ventilation in those on controlled ventilation and more consumption of gases as well as increased pollution of operation room environment in spontaneous or controlled breathing.
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