What mode of pressure-controlled ventilation is designed to prevent alveoli with short-time con-stants from collapsing, thereby improving oxygenation?
a. Pressure-controlled inverse ratio ventila-tion
b. Pressure-controlled intermittent mandato-ry ventilation
c. Volume-assured pressure-supported venti-lation
d. Bilevel positive airway pressure
ANS: A
Because alveoli affected by ALI/ARDS have short-time constants, more time is allotted for in-spiration and less time is allotted for expiration.
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You arrive alone at a scene at which a 16-year-old skier has collided with a tree. He is unresponsive and has blood flowing from his ears and nose. He was not wearing a helmet. Which of the following lists reflects the most appropriate care of this patient?
a. Primary assessment, airway management, immobilization, transport as soon as possible b. Primary assessment, oxygen administration, rapid transport to the aid room, immobilization in the aid room c. Immobilization, transfer to a sled, completion of the assessment in the aid room d. Primary assessment, immobilization, bandaging of the ears to control bleeding, airway management
The chest leads are also called ________ leads
A) precordial B) bipolar C) augmented D) standard