A patient needs additional information about her heart condition. The patient states to the nurse, "What is considered the pacemaker of the heart?"
A) The AV node
B) The bundle of HIS
C) The Purkinje fibers
D) The SA node
D
Feedback:
The SA node is called the pacemaker of the heart because it initiates the electrical impulses that cause the atria and ventricles to contract. Normally, it produces between 60 and 100 impulses per minute; the average is approximately 72 impulses per minute. Therefore, options A, B, and C are incorrect.
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1. acromegaly 2. dwarfism 3. hirsutism 4. gynecomastia
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Which theories contain limited numbers of concepts and are limited in scope with some degree of generalization, but the concepts are clear and hypotheses can be derived?
A) Microtheories B) Practice theories C) Metatheories D) Middle range theories
After a client begins pancreatic enzyme replacement therapy, the nurse will assess for
1. headache. 2. dry mouth. 3. nausea and vomiting. 4. falls.