How long should a medical biller wait to send an insurance tracer?

Nitroglycerin relieves chest pain by

a. decreasing heart rate. b. increasing force of heart contractions. c. dilating coronary arteries. d. constricting coronary arteries.

While a patient is awake during a procedure under local anesthesia, it is better to use hand signals as a way to ask for instruments

Indicate whether the statement is true or false.