The nurse educator is teaching a group of nursing students to assess heart sounds. Which response by a student indicates appropriate understanding of how S2 heart sounds are produced?
1. "It results from the closure of the mitral valve."
2. "It is a result from the closure of the semilunar valves."
3. "It results from the closure of the tricuspid valve."
4. "It is caused by atrial contraction and ejection of blood into the ventricles in late diastole."
Correct Answer: 2
The S2 sounds results from the closure of the semilunar valves. The semilunar valves include the aortic and pulmonic valves. A splitting of the S2 occurs toward the end of inspiration in some individuals. This results from a slight difference between the times the aortic and pulmonic valves close. The S1 heart sound results from closure of the atrioventricular (AV) valves. The S4 sound may be heard in children, well-conditioned athletes, and healthy elderly individuals without cardiac disease. It is caused by atrial contraction and ejection of blood into the ventricles in late diastole.
You might also like to view...
What medication is a first-line therapy in treating bronchospasm?
a. Racemic epinephrine c. Albuterol b. Methylprednisolone d. Morphine
Which condition is a contraindication for an amniotomy?
a. Dilation less than 3 cm b. Breech presentation c. –2 station d. Right occiput posterior position
Nursing jobs need to be developed that increase nurses' professional ____
a. Autonomy b. Behavior c. Culture d. Salaries
A client is ordered to receive gold therapy. The client asks how long it will take for him to feel the effects of this medication. The nurse teaches the client that gold medications:
a. achieve the desired effect in 1 to 2 months. b. achieve the desired effect in 3 to 4 months. c. alleviate symptoms immediately. d. are effective within 7 days of therapy.