What are two reasons for taking pulse measurements?

When assessing an elderly patient with upper back pain, which of these assessment findings would make you very suspicious of a thoracic aortic dissection?

A) Lower back pain described as a constant ache B) Dizziness when going from a supine to standing position suddenly C) Different blood pressure readings in each arm D) History of hypertension and lower back injury

Which allergy test measures levels of antibodies after the blood serum is exposed to suspected allergens?

A. Radioallergosorbent test B. Needle test C. Intradermal test D. Scratch test E. Patch test