Which of the following substances or conditions depresses nerve cell activity?
A. Caffeine
B. Acidosis
C. Alkalosis
D. Theophylline
B
Acidosis depresses the threshold of the nerve membrane so that less stimulus is needed to gener-ate and transmit an impulse.
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A patient with critical illness on complete bed rest has been without oral intake for several days. The patient's general instability has prevented routine turning and repositioning for the past 24 hours
The patient's weight has increased by 10 pounds since admission and the nurse notices evidence of skin breakdown starting. What is the most likely cause of this breakdown? A) Protein–calorie malnutrition B) Hazards of immobility C) Peripheral edema formation D) Effects of medications
You are assessing a 6-year-old little girl in the emergency department (ED) who was brought in by her mother. She was stung by a bee and is allergic to bee venom. The child is now having trouble breathing
She is vasodilated, hypotensive, and has broken out in hives. What do you suspect is wrong with this child? A) She is having an allergic reaction and going into cardiogenic shock. B) She is having an allergic reaction and going into anaphylactic shock. C) She is having an allergic reaction and going into neurogenic shock. D) She is having an allergic reaction and going into obstructive shock.
The nurse is providing instructions to the mother of a 3-year-old child with hemophilia regarding care of the child. Which of the following statements, if made by the mother, indicates a need for further education?
1. "I need to cancel all the dental appointments that I made for my child." 2. "If my child gets a cut, I should hold pressure on it until the bleeding stops." 3. "I should check the house and remove any household items that can easily fall over." 4. "I should move furniture with sharp corners out of the way and pad the corners of the furniture."
A patient is in severe shock and is receiving vasopressin. A student asks the health care professional to explain the rationale for this treatment. What response by the professional is most accurate?
a. “Antidiuretic hormone conserves fluid when urine output is less than 20 mL/hr.” b. “Antidiuretic hormone causes serum osmolality to be increased.” c. “Antidiuretic hormone leads to better insulin utilization.” d. “Antidiuretic hormone causes vasoconstriction to help increase blood pressure.”