« previous next »

Author Question: Which of the following statements is true concerning the operation of a transcutaneous carbon ... (Read 49 times)

maychende

  • Hero Member
  • *****
  • Posts: 556
on: Jul 16, 2018
Which of the following statements is true concerning the operation of a transcutaneous carbon dioxide electrode?
 
  a. PtcCO2 readings are slightly lower than the PaCO2 value.
  b. Electrodes should be calibrated when they are repositioned.
  c. Heating the transcutaneous PCO2 (PtcCO2) to 43C will adversely affect its operation.
  d. Before its use, the electrode should be calibrated to 20 and 40 CO2.

Question 2

The standard transcutaneous carbon dioxide electrode is which of the following?
 
  a. Clark c. Spectrophotometer
  b. Levy-Jennings d. Modified Stow-Severinghaus


zogaridan

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: B
Manufacturers typically suggest calibration of an electrode each time it is repositioned. PtcCO2 readings are slightly higher than the PaCO2 value because of the higher metabolic rate at the site of the electrode caused by heating the skin. The PtcCO2 electrode must be heated to 42 C to 44 C. The PtcCO2 electrodes are calibrated with a two-point calibration procedure by using 5 CO2 and 10 calibration gases.

Answer to Question 2

ANS: D
The standard transcutaneous carbon dioxide electrode is a modified Stow-Severinghaus blood gas electrode composed of pH-sensitive glass with a silversilver chloride (Ag/AgCl) electrode. The Clark electrode measures oxygen. Levy-Jennings is a chart that allows the operator of blood gas analyzers to detect trends and shifts in electrode performance. A spectrophotometer is a de-vice for measuring light that can measure intensity as a function of the wavelength of light. It is used in pulse oximeters.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

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.

A true albino squirrel. Note the pink eyes. A true albino squirrel. Note the pink eyes.
President-elect Barack Obama 150 million tiny carbon nanotubes President-elect Barack Obama 150 million tiny carbon nanotubes
PCV valve operation in the event of a backfire. PCV valve operation in the event of a backfire.
Examples of Mission Statements Examples of Mission Statements
A carbon-14 nucleus decays to a nitrogen-14 nucleus by beta-minus decay. How much energy (in ... A carbon-14 nucleus decays to a nitrogen-14 nucleus by beta-minus decay. How much energy (in ...
Estimates of carbon stored in the plants and soils of different ecosystems. Estimates of carbon stored in the plants and soils of different ecosystems.
Video: Introduction to Pre-eclampsia

For a complete list of videos, visit our video library