Jordan works in a hematology lab and processed a blood report showing 22,000 white blood cells/mm3 of blood for a patient. He suspects this patient has a bacterial infection leading to ________
A) sickle cell anemia (SCA)
B) polycythemia
C) anemia
D) leukocytosis
E) leukopenia
D
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Hyperventilation of the brain-injured patient:
A) shunts oxygen away from the brain and may result in decreased cerebral perfusion pressure. B) has clearly demonstrated decreased mortality and morbidity in patients with a severe head injury. C) causes cerebral vasodilation with increased intracranial pressure and should be avoided. D) is only appropriate if the patient is unresponsive and has bilaterally dilated and sluggishly reactive pupils.
Systolic blood pressure represents ________
A) the expansion and recoil of the artery walls B) the highest blood pressure generated in arteries during ventricular systole when the artery is maximally stretched C) the resistance to blood flow in the arteries D) the electrical activity in the heart
Which of the following is the most abundant positively charged ions in extracellular fluids?
A. H+ B. Ca2+ C. Na+ D. K+
The term ductus venosus refers to ________
A) damage to the valves in the veins, leading to varicose veins B) a condition of the aged in which the arteries lose elasticity C) a fetal shunt that bypasses the lungs D) a special fetal vessel that allows umbilical blood to bypass the liver