The nurse is caring for a client with pneumonia. As part of prescribed therapy, the client must use a bedside incentive spirometer to promote maximal deep breathing. The nurse checks to make sure the client is using the spirometer properly. During each waking hour, the client should perform a minimum of how many sustained, voluntary inflation maneuvers?

What error was probably made if red cells are seen when attempting to manually count white blood cell (WBCs) on a hemocytometer?

a. The Unopette was not mixed before charging the hemocytometer. b. Diluent was squeezed out and lost when filling the Unopette. c. The wrong dilution was made. d. The Unopette was not allowed to sit for 10 minutes for complete red blood cell (RBC) lysis.

The most popular type of contraceptives in the United States are:

A. the oral contraceptive B. intrauterine devices (IUDs) C. condoms D. coitus interruptus