Hormones are the chemical transmitters that provide regulation for all of the following EXCEPT _________

If a QRS complex is determined to be wide, the electrical stimulus most likely originated:

a. in the atria. b. at or above the SA node. c. at or above the AV node. d. below the AV node.

Suctioning a patient should be limited to:

A) 45 seconds. B) 30 seconds. C) 60 seconds. D) 10 seconds.