The critical care nurse is caring for a patient who has been experiencing bradycardia after cardiovascular surgery. The nurse knows that the heart rate is determined by myocardial cells with the fastest inherent firing rate
Under normal circumstances where are these cells located?
A) SA node
B) AV node
C) Bundle of His
D) Purkinje cells
Ans: A
Feedback:
The heart rate is determined by the myocardial cells with the fastest inherent firing rate. Under normal circumstances, the SA node has the highest inherent rate (60 to 100 impulses per minute).
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A pediatric nurse performs a physical examination on a neonate and notes a spinal lesion with the meninges protruding through the defect that contains spinal cord elements. The nurse documents which condition as being present?
A. Hydrocephalus B. Meningitis C. Meningocele D. Myelomeningocele E. Spina bifida occulta
The nurse and a graduate nurse are reviewing an order for penicillin G (Benzylpenicillin). The nurse is discussing the pharmacokinetics of penicillin G with the graduate nurse
Which statement by the graduate nurse best demonstrates understanding of the pharmacokinetics of penicillin G? a. "Penicillin G is absorbed well when administered enterally and parenterally." b. "Excretion by the kidneys is subject to the first-pass effect and the cytochrome p-450 system." c. "Inflammation increases the distribution of penicillin G into the joints and cere-brospinal fluid." d. "Penicillins generally are bacteriostatic but seldom have bactericidal effects."
Linda is a 29-year-old who had excruciating pain which started under her lower ribs on the right side. The pain eventually moved to her lateral abdomen and then into her right lower quadrant. Which is most likely, given this presentation?
A) Appendicitis B) Dysmenorrhea C) Ureteral stone D) Ovarian cyst
Which nursing interventions are most helpful for the 6-week-old who continues to vomit stomach contents after feeding? Select all that apply.
What will be an ideal response?