Which of the following features or characteristics apply to mainstream capnography?
I. The mainstream capnograph contains narrow tubing that can become occluded with mucus.
II. Mainstream capnography generally employs infrared spectrometers.
III. The mainstream capnograph does not add much weight to the breathing circuit.
IV. The mainstream capnograph is placed at the proximal end of the endotracheal tube.

Question

Quizplus · Accepted Answer

Gases from an exhaled breath can reach the sample chamber in one of two ways. Mainstream capnographs are used in ventilated patients, with placement at the proximal end of an endotracheal tube (see Figure 9-5 in the textbook). This method employs infrared spectrometers. Sidestream capnograph analyzers continuously aspirate a sample of gas through a small tube to the analyzer.

Which of the Following Features or Characteristics Apply to Mainstream