While monitoring a patient during a spontaneous breathing trial via T-tube, you note the following: an increase in heart rate from 85 to 103/min; an increase in respiratory rate from 19 to 26/min; an increase in PetO2 from 44 to 52 mm Hg; and a decrease in SpO2 from 94 to 90%. Which of the following actions would be appropriate at this time?
A. restore the patient to full ventilatory support
B. encourage the patient to relax and continue monitoring
C. request that the patient be given a mild sedative
D. measure the patient's vital capacity and MIP/NIF
Answer: B. encourage the patient to relax and continue monitoring
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You are asked to test the osmotic fragility of a patient's red blood cells (RBCs). After calculating the percent lysis, you plot the results. The patient's lysis curve is significantly shifted to the left of the normal curve
What does this indicate? A) The patient's RBCs have a high osmotic fragility, consistent with the presence of spherocytes. B) The patient's RBCs have a high osmotic fragility, consistent with the presence of target cells. C) The patient's RBCs have a low osmotic fragility, consistent with the presence of spherocytes. D) The patient's RBCs have a low osmotic fragility, consistent with the presence of target cells.
Ideal positioning of the foot for the plantodorsal axial projection is:
dorsiflexed and the plantar surface is parallel to the image receptor dorsiflexed and the plantar surface is perpendicular to the image receptor plantarflexed and the plantar surface is parallel to the image receptor plantarflexed and the plantar surface is perpendicular to the image receptor
A worker has been exposed to beta rays given off by a radioactive material. Which one of the following should you do FIRST?
A) Assess his level of consciousness and ABCs. B) Determine the exact material he was exposed to. C) Decontaminate the patient. D) Quickly assess for any radiation burns.
What would be the result if that patient's part was not aligned parallel to the image receptor, but the beam was perpendicular to the image receptor?
foreshortening loss of detail magnification elongation