Sunday, June 28, 2009

Answer to the questions

1. Give other names for ADH.
Vasopressin; Arginine Vasopressin; AVP

2- 3. Two principal sites of action of AVP.
Kidney and Bloodvessels

4. A common disease related to ADH.
Diabetes Insipidus (DI)

5. Major sign of Diabetes Insipidus.
Excessive Urination

6- 7. Give the 2functions of AVP.
Regulates extracellular fluid volume and It is a vasoconstriction

8. Normal values for ADH test.
0 to 4.7 pg/mL

9. Give one condition if the result obtained is abnormally high.
Post- surgery fluid imbalance

10. Give one condition if the result obtained is abnormally low.
Diabetes Insipidus (central or nephrogenic)

Case Analysis:

11- 20. A 24-year old woman Liz, is a flight attendant for almost 5 years. One day when she was on leave she noticed that every hour she had to go to the bathroom and she felt uneasy about it. That was why she went to see a doctor but they didn't find any abnormality on physical examination.

What probable condition is Liz suffering from?

Liz is suffering from excessive urination or also known as polyuria which is a major sign of having Diabetes Insipidus.

This DI may arise from either of this two situations,

Hypothalamic DI this is deficiency in the secretion of ADH in the posterior pituitary and Nephrogenic DI this is when the kidney is unable to respond to ADH.

ADH is the hormone that decreases urine production and in this case there is the absence of ADH, that was why Liz is suffering from excessive urination.

What test would you recommend to diagnose her?

ADH test, because this test is performed if a disorder that affects ADH level is suspected.


  1. Great set of questions. You have a future in teaching too.


  2. This comment has been removed by the author.

  3. explain more about your case. pay attention to Dr. Z's comment..=) hahaha

  4. nice post..keep it up...i agree to raychel and eryll..=)

  5. hahaha. joy! maybe some addition to the answers in the case would give more detailed information. haha

  6. i agree with their comments. consider pursuing a career in teaching. :) with your skills, you'll definetely be a great teacher.


  7. hi joy,
    maybe you could add more information regarding on your case analysis portion..

    still its a good post

  8. nice post. you can add about how the disease
    can be treated for additional info but overall good job. keep it up

  9. Your blog suits your personality, and you have the skills in writing joy.=)