Author Question: A 54-year-old man with a long-standing diagnosis of essential hypertension is meeting with his ... (Read 67 times)

TFauchery

  • Hero Member
  • *****
  • Posts: 500
A 54-year-old man with a long-standing diagnosis of essential hypertension is meeting with his physician.
 
  The patient's physician would anticipate that which of the following phenomena is most likely occurring?
  A)
  The patient's juxtaglomerular cells are releasing aldosterone as a result of sympathetic stimulation.
  B)
  Epinephrine from his adrenal gland is initiating the renin-angiotensin-aldosterone system.
  C)
  Vasopressin is exerting an effect on his chemoreceptors and baroreceptors resulting in vasoconstriction.
  D)
  The conversion of angiotensin I to angiotensin II in his lungs causes increases in blood pressure and sodium reabsorption.

Question 2

Which of the following phenomena would be most likely to accompany increased myocardial oxygen demand (MVO2)?
 
  A)
  Inadequate ventricular end-diastolic pressure
  B)
  Use of calcium channel blocker medications
  C)
  Increased aortic pressure
  D)
  Ventricular atrophy



todom5090

  • Sr. Member
  • ****
  • Posts: 328
Answer to Question 1

Ans:
D

Feedback:

Angiotensin conversion in the lungs is a component of the renin-angiotensin-aldosterone system that ultimately increases blood pressure and sodium reabsorption. Juxtaglomerular cells release renin, and epinephrine (vasopressin) is responsible for neither initiating the renin-angiotensin-aldosterone system nor directly influencing chemoreceptors and baroreceptors.

Answer to Question 2

Ans:
C

Feedback:

An increase in aortic pressure results in a rise in afterload, wall tension, and, ultimately, MVO2. Increased, not inadequate, ventricular end-diastolic pressure would cause an increase in MVO2, and medications such as calcium channel blockers would decrease MVO2. Hypertrophy of ventricles would occur in response to prolonged wall stress and consequent oxygen demand.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Thyroid conditions may make getting pregnant impossible.

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

For a complete list of videos, visit our video library