A nurse is teaching staff about the conduction of the heart. In which order will the nurse present the conduction cycle, starting with the first structure?
1. Bundle of His
2. Purkinje network
3. Intraatrial pathways
4. Sinoatrial (SA) node
5. Atrioventricular (AV) node
a. 5, 4, 3, 2, 1
b. 4, 3, 5, 1, 2
c. 4, 5, 3, 1, 2
d. 5, 3, 4, 2, 1
ANS: B
The conduction system originates with the SA node, the "pacemaker" of the heart. The electrical impulses are transmitted through the atria along intraatrial pathways to the AV node. It assists atrial emptying by delaying the impulse before transmitting it through the Bundle of His and the ventricular Purkinje network.
You might also like to view...
A community health nurse who is working with a program to foster early detection of prostate cancer recommends prostate-specific antigen testing and a digital rectal exam for men with average risk starting at which age?
A) 40 years B) 45 years C) 50 years D) 55 years
There are many terms used to describe moral issues faced by nurses including moral uncertainty, moral conflict, moral distress, moral outrage, and ethical dilemmas. What is moral uncertainty?
A) Occurs when an individual is unsure which moral principles or values apply and may even include uncertainty as to what the moral problem is B) Occurs when the individual knows the right thing to do but organizational constraints make it difficult to take the right course of action C) Occurs when an individual witnesses the immoral act of another but feels powerless to stop it D) Being forced to choose between two or more undesirable alternatives
When taking a history, you should:
a. ask the patient to give you any informa-tion they can recall about their health. b. start the interview with the patient's fam-ily history. c. use a chronologic and sequential frame-work. d. use a holistic and eclectic structure.
A preterm newborn is admitted to the neonatal intensive care unit. The parents arrive for their first visit after the birth. They approach the warmer but remain several feet away. The nurse's most appropriate action would be to:
a. Wait quietly at the newborn's bedside until the parents come closer. b. Go to the parents, introduce herself, and gently encourage them to come meet their infant; explain equipment first, then focus on the baby. c. Tell the parents only about the baby's physical condition and warn them not to touch the baby. d. Leave the parents at the bedside while they are visiting, so they can have some privacy.