Synopsis of Experiment
The patients are males aged 60-63 years of age, 67-72 inches tall, and have a normal BMI (body mass index). Based on their symptoms their doctor suspects an acid-base balance disorder. The doctor ordered the following diagnostic tests: Respiratory rate and arterial pH, pCO2, and HCO3– (bicarbonate ion) measurements.
- Respiratory rate is determined using an accoustic sensor.
- Arterial capillary blood samples are collected in heparinized capillary tubes to prevent clotting.
- Carbon dioxide gas levels (pCO2) are measured with CO2 potentiometry and pH is measured by pH potentiometry. Arterial blood HCO3– is calculated from pH and pCO2 levels.
Predictions
Based on what you know, predict the outcome of the experiments. Complete the statements below by choosing one response for each number.
When you are done, click or tap the Submit button to save your responses to the laboratory report.
Your Predictions have been submitted to the Lab Report.
Scroll down to select Variables.
IMPORTANT: If you do not click the Submit to Lab Report button, the answers will not appear in your Laboratory Report. You will see “undefined” in the answer blanks for Predictions and Materials and Methods when you Save to PDF.
You have correctly defined all of the variables.
Click or tap the Submit to Lab Report button to continue.
Correct.
Try Again.
You have not defined all of the variables correctly. Try again.
Variables
Now determine the dependent, independent and controlled variables for the experiments in this laboratory activity by clicking or tapping on the appropriate answers.
Check your answers until you have chosen all variables correctly. There will be one choice for Dependent and Independent Variables and multiple choices for Controlled Variables. When you are done, click the Submit button to save your responses to the laboratory report.
IMPORTANT: If you do not click the Submit to Lab Report button, the answers will not appear in your Laboratory Report. You will see “undefined” in the answer blanks for Predictions and Materials and Methods when you Save to PDF.