« previous next »

Author Question: A patient with a normal PaO2 and cardiac output is exhibiting signs and symptoms of tissue hy-poxia. ... (Read 93 times)

captainjonesify

  • Hero Member
  • *****
  • Posts: 543
on: Jul 16, 2018
A patient with a normal PaO2 and cardiac output is exhibiting signs and symptoms of tissue hy-poxia. What is the most likely cause?
 
  a. Hemoglobin deficiency
  b. Low ambient PO2
  c. Right-to-left shunt
  d. Hypoventilation

Question 2

The expected PaO2 for an 80-year-old man who is otherwise in good health and breathing room air is approximately what level?
 
  a. 50 mm Hg
  b. 75 mm Hg
  c. 80 mm Hg
  d. 90 mm Hg


kxciann

  • Sr. Member
  • ****
  • Posts: 356
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: A
If the blood hemoglobin is loweven when the PaO2 is normalhypoxia can occur because of low O2 content in the arterial blood.

Answer to Question 2

ANS: B
One may estimate the expected PaO2 in older adults by using the following formula:
Expected PaO2 = 100.1  (0.323  age in years)


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

The medical assistant escorts the patient into the examination room. The medical assistant escorts the patient into the examination room.
Assisting the patient to transfer from the bed or examining table to a wheelchair. Assisting the patient to transfer from the bed or examining table to a wheelchair.
Phases of the normal walking gait. Phases of the normal walking gait.
General Features of Connective Tissue General Features of Connective Tissue
ATP Production in Cardiac Muscle ATP Production in Cardiac Muscle
Video: Cardiac conductile cells

For a complete list of videos, visit our video library