A(n) ________ is a beat that originates from the ventricles of the heart, occurs early in the cycle, and is followed by a pause before the next cycle.

A 34-year-old woman has severe anemia. She complains of a feeling of fullness and splenomegaly. This diagnosis and clinical symptoms indicate:

a. a chronic hemolytic process b. an acute hemolytic anemia c. intravascular hemolysis d. extravascular hemolysis

An acanthioparietal facial bone projection (Waters method) with poor positioning demonstrates the petrous ridges too far inferior to the maxillary sinuses. How could the positioning setup be adjusted for an optimal projection to be obtained?

1. Depress the patient's chin. 2. Align the central ray parallel with the MML. 3. Align the MML perpendicular to the IR. 4. Adjust the central ray angulation caudally. a. 1 and 3 only b. 2 and 3 only c. 1 and 4 only d. 1, 2, 3, and 4