What does electroretinography measure?
a. A fluorescein dye is injected intravenously (IV) into a vein in the arm, and the retina is observed as the dye circulates.
b. Electrodes are placed on the scalp, each eye is stimulated, and retinal activity is assessed.
c. A small plunger is used to apply pressure on the sclera while the retinal vessels are evaluated.
d. A contact lens electrode is placed on the eye and exposed to flashes of light to evaluate the retinal response.
D
A contact lens electrode is placed on the eye, and retinal activity is assessed as lights are flashed into the eye. The other three options describe fluorescein angiography, visual-evoked response, and tonometry.
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The nurse doing patient education with a 55-year-old male recently diagnosed with primary hypertension
who has no signs or symptoms of the disease is aware that an estimated 50% of patients discontinue their antihypertensive medications within one year of beginning them. Keeping this in mind, the nurse recommends which of the following to this patient: A) Self-monitoring of blood pressure B) Monthly visits to the physician to monitor blood pressure C) Adherence to the treatment plan regardless of symptoms D) Monitoring of symptoms of complications of hypertension and taking medications if symptoms are present
In which instance would it be inappropriate for the nurse to use capillary blood specimen collection?
1. Testing a serum glucose level 2. Measuring a client's hematocrit 3. Obtaining blood specimens on an infant 4. Measuring an arterial blood gas
The nurse is administering iron-dextran (Imferon) to a child diagnosed with iron-deficiency anemia. How should the nurse give this medication?
A) Intravenous B) Rectal C) Intramuscular D) Subcutaneous
Visual disturbances are a result of a pituitary adenoma because of the:
a. Liberation of anterior pituitary hormones into the optic chiasm b. Pituitary hormones clouding the lens of the eyes c. Pressure of the tumor on the optic chiasm d. Pressure of the tumor on the optic and oculomotor cranial nerves