During a total mastectomy, what must the surgical technologist have readily available?

The attending physician of a patient who is experiencing pain asks that you evaluate the intensity of her pain. The most objective way to do so would be to:

A. Ask the patient "How much pain are you having" B. Observe the patient for facial expressions indicative of pain C. Measure the patient's pulse and respiratory rate D. Have the patient rate her pain on a numeric rating scale

Which of these statements is false?

A) The paralleling technique does not meet all five shadow-casting principles in all regions of the oral cavity on all patients. B) With the paralleling technique, it is not possible to direct the central rays of the x-ray beam to both the tooth and the image receptor simultaneously. C) The paralleling technique is the technique of choice for obtaining periapical radiographs. D) With the paralleling technique, the object and image receptor are positioned parallel to each other.