This topic contains a solution. Click here to go to the answer

Author Question: A group of nurses are discussing the benefits of the blood-brain barrier, which statement made by ... (Read 24 times)

moongchi

  • Hero Member
  • *****
  • Posts: 516
A group of nurses are discussing the benefits of the blood-brain barrier, which statement made by one of the nurses regarding the blood-brain barrier demonstrates a need for further teaching?
 
  a. It can protect the brain from injury by potentially toxic substances.
  b. It can be a significant obstacle to entry of therapeutic agents.
  c. It is not fully developed at birth.
  d. Infants are not as sensitive to central nervous system drugs as older children and adults.

Question 2

A nurse assesses a patient with severe venous incompetence. When the patient stands, blood pressure decreases. Which compensatory change should the nurse expect?
 
  a. Tachycardia
  b. Increase in cardiac output
  c. Bradycardia
  d. Pulmonary edema



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ms_sulzle

  • Sr. Member
  • ****
  • Posts: 320
Answer to Question 1

D
Infants are much more sensitive to central nervous system drugs than older children and adults, as the blood-brain barrier is not fully developed at birth.
From a therapeutic perspective, the blood-brain barrier is a mixed blessing. On the positive side, it protects the brain from injury by potentially toxic substances. However, it also makes it difficult to treat diseases affecting the brain.
The blood-brain barrier is not fully developed at birth; no further teaching is required.

Answer to Question 2

A
Postural hypotension is caused by the pooling of blood in the veins, which reduces venous return, resulting in venous dilation and tachycardia as compensatory mechanisms.
An increase in cardiac output would not occur.
The heart rate would actually increase, not decrease.
Pulmonary edema would not occur.





 

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

For a complete list of videos, visit our video library