An increased red cell distribution width (RDW) usually indicates what abnormality?
a. Increase of average erythrocyte volume
b. Increase of average weight of hemoglobin
c. Decrease in ratio of hemoglobin mass to volume
d. Variation in erythrocyte size
Correct Answer: D
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Which is the structural abnormality in Arnold-Chiari malformation?
a. Defective closure of the caudal neural tube b. Defective closure of the rostral neuropore c. Excessive accumulation of CSF within the ventricles d. Elongation of the cerebellum and medulla
An alert and oriented 29-year-old male diver surfaced and called 911 for severe right ear pain. When asked, he specifically denies nausea, dizziness, or pain other than in his ear. Assessment reveals no threats to the airway, breathing, or circulation. The ear shows no obvious injury or discharge. His vital signs are: pulse 96, respirations 16, blood pressure 146/76, and SpO2 at 97%. Which one of
the following is the best and proper care for this patient? A) Transport to a recompression chamber B) Immobilization with a cervical collar and backboard C) Oxygen and transport to the emergency department D) Gauze in the ear canal to decrease outside pressure
Cryptography can protect the ____ of information by ensuring that only authorized parties can view it.
A. integrity B. confidentiality C. availability D. authenticity
The pulse oximeter will often read falsely high SpO2 in patients with a low level of methemoglobinemia.
Answer the following statement true (T) or false (F)