The left ventricle has the thickest walls because it:
A. pumps blood to the lungs to be reoxygenated.
B. uses less oxygen than other chambers of the heart.
C. pumps blood into the aorta and systemic circulation.
D. receives blood directly from the systemic circulation.
Answer: C. pumps blood into the aorta and systemic circulation.
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When treating an injured geriatric patient, it is very important to:
A) always use high-concentration oxygen. B) work to achieve an oxygen saturation of at least 94%. C) place the patient in a sitting position to promote adequate breathing. D) avoid use of a nonrebreather and high-concentration oxygen unless apneic.
To suction an endotracheal tube the measurement of the soft catheter is from the tip of the endotracheal tube to the level of the carina, which lies at approximately the sternal notch. In the adult patient, typically a ________ Fr. suction catheter is used
A) 4 B) 8 C) 14 D) 20