What is the role of the atrioventricular node in a person with normal heart rate (60 to 100 bpm) and why?
A) Acts as primary pacemaker, to establish the heart rate
B) Accelerates conduction of atrial action potentials so that all ventricular cells contract almost simultaneously
C) Delays conduction of atrial action potentials so that all ventricular cells contract almost simultaneously
D) Pumps sodium out of the myocardial cell and potassium into it to cause cell membrane depolarization
C
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The nurse observes a tarry stool from a 16-year-old burn victim who has been in the ICU for 2 weeks. Which complication does the nurse document and report?
a. Diverticulitis b. Stress diarrhea c. Curling's ulcer d. Perforated bowel
Which nail change found on examination would be most alarming?
a. Dark bands seen on all fingernails of a dark-skinned person b. Yellow discoloration of the great toe of an older adult c. Single dark band in a white adult d. Pits in both index fingernails of an adult
Which action by the unlicensed assistive personnel (UAP) who are assisting with the care of patients with male reproductive problems indicates that the nurse should provide more teaching?
a. The UAP apply a cold pack to the scrotum for a patient with mumps orchitis. b. The UAP help a patient who has had a prostatectomy to put on antiembolism hose. c. The UAP leave the foreskin pulled back after cleaning the glans of a patient who has a retention catheter. d. The UAP encourage a high oral fluid intake for patient who had transurethral resection of the prostate yesterday.
The caregiver of a child with a history of ear infections calls the nurse and reports that her son has just told her his urine "looks funny." He also complains of a headache and his mother reports his eyes are puffy
Although he had a fever 2 days ago, his temperature now is down to 100° Fahrenheit. The nurse encourages the mother to have the child seen by the care provider because the nurse suspects the child may have: A) a urinary tract infection B) lipoid nephrosis (idiopathic nephrotic syndrome) C) acute glomerulonephritis D) rheumatic fever