To measure PCO2, blood gas analyzers use what electrode?
a. Severinghaus
b. Clark
c. Sahn
d. White
ANS: A
To measure PCO2, blood gas analyzers use the Severinghaus electrode, which is essentially a pH electrode exposed to an electrolyte solution that is in equilibrium with the sample through a car-bon dioxide–permeable membrane.
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Your patient is an 80-year-old male complaining of lower back pain that radiates through to the abdomen. He describes the pain as "ripping" in nature. He is pale, diaphoretic, and anxious, and has a blood pressure of 210/100 mmHg, a pulse of 112 beats per minute, and a respiratory rate of 20 breaths per minute. Which of the following conditions is MOST likely?
A) Gallbladder disease B) Bowel obstruction C) Abdominal aortic aneurysm D) Diverticulitis
Water distribution models can be categorized as either __________ or __________
Fill in the blank(s) with correct word